Adaptive array antenna transceiver apparatus
First Claim
1. An adaptive array antenna transceiver apparatus comprising a plurality of antenna elements, transmitters and receivers in the same number as the antenna elements of said array antenna, a common-use device connecting said transmitters and receivers to each of said antenna elements, and a radiation pattern control processor that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each respective antenna element into said plurality of receivers, and at the same time the reception frequency of said receivers is different from the transmitting frequency of said transmitters, which provides:
- a local signal generator that outputs a signal having a frequency that corresponds to the difference between the reception frequency of said receivers and the transmitting frequency of said transmitters;
a dividing device that separates and extracts a part of the signals from the output of said plurality of transmitters;
a first switch that selects the signal output from any one of said plurality of transmitters;
a frequency converter that converts the frequency of the signal selected by said first switch by using the signal output by said local signal generator;
a second switch that inputs signals output by said frequency converter and selectively outputs them to any one of the plurality of paths corresponding to said plurality of receivers;
a third switch that selectively inputs a reception signal from a said antenna elements or a signal from said second switch into each of said receivers; and
a calibration control circuit that controls the connection state of said first switch, second switch, and third switch, inputs the amplitude and phase values obtained at said receivers, and finds the calibration value of each of the branches of said array antenna.
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Accused Products
Abstract
An adaptive array antenna transceiver apparatus provides: a local signal generator 24 that outputs a signal having a frequency that corresponds to the difference between the reception frequency and the transmitting frequency; a coupler 15 that separates and extracts a part of the signals from the output of the transmitters 13; a switch 21 that selects the signal output from any one of the transmitters 13; a frequency converter 22 that converts the frequency of the signal selected by the switch 21; and a switch 23 that inputs signals output by the frequency converter 22 and selectively outputs them to any one of the plurality of paths. The transceiver further provides a switch 16 that selectively inputs a reception signal from a said antenna elements or a signal from said second switch into each of said receivers; and a calibration control processor 25 that controls the connection state of said switches 16, 21, 23, inputs the amplitude and phase values obtained at the receivers 14, and finds the calibration value of each of the branches of the array antenna.
56 Citations
30 Claims
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1. An adaptive array antenna transceiver apparatus comprising a plurality of antenna elements, transmitters and receivers in the same number as the antenna elements of said array antenna, a common-use device connecting said transmitters and receivers to each of said antenna elements, and a radiation pattern control processor that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each respective antenna element into said plurality of receivers, and at the same time the reception frequency of said receivers is different from the transmitting frequency of said transmitters, which provides:
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a local signal generator that outputs a signal having a frequency that corresponds to the difference between the reception frequency of said receivers and the transmitting frequency of said transmitters;
a dividing device that separates and extracts a part of the signals from the output of said plurality of transmitters;
a first switch that selects the signal output from any one of said plurality of transmitters;
a frequency converter that converts the frequency of the signal selected by said first switch by using the signal output by said local signal generator;
a second switch that inputs signals output by said frequency converter and selectively outputs them to any one of the plurality of paths corresponding to said plurality of receivers;
a third switch that selectively inputs a reception signal from a said antenna elements or a signal from said second switch into each of said receivers; and
a calibration control circuit that controls the connection state of said first switch, second switch, and third switch, inputs the amplitude and phase values obtained at said receivers, and finds the calibration value of each of the branches of said array antenna. - View Dependent Claims (2, 3, 4)
A combiner that combines the reception signals from said antenna elements and the signals form said second switch, and outputs this signal to said receiver, is provided instead of said third switch;
a calibration reception signal separation circuit that separates/outputs the received signal from said antenna element and the signal from said second switch for the output signal of said receiver is further provided; and
wherein; said calibration circuit controls the connection state of said first switch and second switch, inputs the signal of the second switch separated by said calibration/reception signal separation circuit, and finds the calibration value of each of the branches of said array antenna.
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5. An adaptive array antenna transceiver apparatus comprising a plurality of antenna elements, transmitters and receivers in the same number as the antenna elements of said array antenna, common-use devices connecting said transmitters and receivers to each of said antenna elements, and a radiation pattern control calculating circuit that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to the signals input from each of the antenna elements to said plurality of receivers, and at the same time the reception frequency of the receivers is different from the transmitting frequency of the signal applied to the antenna elements from the transmitter, which provides:
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a local signal generator that outputs a signal having a frequency that corresponds to the difference between said reception frequency and said transmitting frequency;
a first frequency converter that converts the frequency of the signal having the same frequency as said reception frequency output from each of said plurality of transmitters using a signal output by said local signal generator;
a first dividing device that separates and extracts a part of the signals from the output of said plurality of transmitters after conversion by said first frequency converter;
a second dividing device that separates and extracts a part of a signal from the output of one of said transmitters before conversion by said first frequency converter, a first switch that selects one signal input by any one of said plurality of transmitters into said first dividing device;
a second frequency converter that converts the frequency of the signal selected by said first switch by using the signal output by said local signal generator;
a second switch that inputs signals output by said second dividing device and selectively outputs them to any one of the plurality of paths corresponding to said plurality of receivers;
a third switch that selectively inputs into each of said receivers a reception signal from said antenna elements, a signal from said second switch, and a signal from said second frequency converter; and
a calibration control circuit that controls the connection state of said first switch, said second switch, and said third switch, inputs the amplitude and phase values obtained at said receivers, and finds the calibration value of each of the branches of said array antenna. - View Dependent Claims (6, 7, 8)
a combiner that combines the received signal from said antenna elements and the signal from said second switch, or the received signal from said antenna elements and the signal from the said second frequency converter, and outputs this signal to said receiver is provided instead of said third switch;
a calibration/reception signal separation circuit separates/outputs the reception signal from said antenna elements and the signal from said second switch, or separates/outputs the reception signal from said antenna elements and the signal from said second frequency converter for the output signal of said receiver is further provided; and
whereinsaid calibration control circuit controls the connection state of said first switch and second switch, inputs the signal from the second switch separated by said calibration/reception signal separating circuit or the signal from the second frequency converter separated by said calibration/reception signal separating circuit, and finds the calibration value of said of the branches of said array antenna.
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9. An adaptive array antenna transceiver apparatus comprising a plurality of antenna elements, transmitters and receivers in the same number as the antenna elements of said array antenna, a common-use device connecting said transmitters and receivers to each of said antenna elements, and a radiation pattern control processor that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each respective antenna element into said plurality of receivers, and at the same time the reception frequency of said receivers is different from the transmitting frequency of said transmitters, which provides:
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a local signal generator that outputs a signal having a frequency that corresponds to the difference between the reception frequency of said receivers and the transmitting frequency of said transmitters;
a dividing device that separates and extracts a part of the signals from the output of said plurality of transmitters;
a plurality of first switches that inputs and selects any one of the output signal of said respective dividing devices form the two branches adjacent to each other for the arrangement of branches assigned in advanced of said array antenna;
a frequency converter that converts the frequency of the signal selected by said first switch by using the signal output by said local signal generator;
a second switch that inputs signals output by said frequency converter and selectively outputs them to any one of the plurality of paths corresponding to said two branches adjacent to each other for the respective plurality of branches of said array antenna;
a third switch that selects and inputs into one of said receivers a reception signal from said antenna elements or the relevant branch and a signal from said second switch included in the adjacent branch for the respective plurality of branches of said array antenna; and
a calibration control circuit that controls the connection state of said first switch, second switch, and third switch, inputs the amplitude and phase values obtained at said receivers, and finds the calibration value of each of the branches of said array antenna. - View Dependent Claims (10, 11, 12)
a combiner that combines the received signal from said antenna elements and the signal from said second switch, or the received signal from said antenna elements and the signal from the said second switch included in the adjacent branch, and outputs this signal to said receiver is provided instead of said third switch;
a calibration/reception signal separation circuit separates/outputs the reception signal from said antenna elements and the signal from said second switch included in the adjacent branch, or separates/outputs the reception signal from said antenna elements and the signal from said second switch included in the adjacent branch for the output signal of said receiver is further provided; and
whereinsaid calibration control circuit controls the connection state of said first switch and second switch, inputs the signal from the second switch included in the relevant branch separated by said calibration/reception signal separating circuit or the signal from the second switch included in the adjacent branch separated by said calibration/reception signal separating circuit, and finds the calibration value of each of the branches of said array antenna.
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13. An adaptive array antenna transceiver apparatus comprising N antenna elements, N is an integral number and shows three or more;
- N transmitters and receivers;
a common-use device that connects said transmitters and receivers to each of the antenna elements; and
a radiation pattern control processor that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each of the respective antenna elements into said plurality of receivers, and at the same time, the reception frequency of said array antenna to be used in communication and the transmitting frequency are different, which provides;N transmitters for which the frequency of the transmitted signal is identical to the reception frequency of said array antenna;
a first frequency converter that converts the frequency of signals transmitted by each of said N transmitters to the transmitted frequency of said array antenna;
N dividing devices that extract a signal from the output of each of said N transmitters before conversion by said first frequency converter;
N receivers for which the frequency of the reception signal is identical to the reception frequency of said array antenna;
a second frequency converter that converts a signal having a frequency identical to the transmitted frequency of said array antenna to a frequency identical to the reception frequency of said array antenna;
N first common-use devices provided between the output of said first frequency converter, the input of the receiver, and each of said antenna elements;
N second common-use devices provided between the output of said dividing device, the input of said second frequency converter, and each of said antenna elements;
at least one additional antenna that can be connected to any one of said N transmitters or N receivers;
a first switch provided on each antenna element that connects either one of said antenna elements or the additional antenna to either one of said first common-use device or said second common-use device;
a second switch provided on each receiver and connected to the input of said receivers and selectively inputs into said receivers either one of the reception signals from said first common-use device or the reception signals output by said second frequency converter;
a third switch that connects said additional antenna to any one of the first switches; and
a calibration control circuit that controls the first switch, second switch, and third switch, and at the same time, finds the calibration value of the amplitude and phase between branches of the array antenna based on the amplitude and phase values obtained from each of said receivers. - View Dependent Claims (14, 15, 16, 17, 18)
controls the first switch, second switch, and third switch, and selects from among said N transmitters the first transmitter or the second transmitter respectively included in branches of two antenna elements that have equal distances from said additional antenna, and at the same time, selects from among said N receivers one calibration receiver included in a branch differing from that of said first transmitter and second transmitter, connects the third switch to one calibration receiver included in a branch differing from that of said first transmitter and second transmitter;
transmits the signal that is the signal output by said first transmitter and frequency converted by said first frequency converter from the antenna element of the branch included in the first transmitter;
inputs the output that is the signal from said first transmitter received by said additional antenna and frequency converted by said second frequency converter into the said calibration receiver, and detects a first measured value obtained at said calibration receiver;
transmits the signal that is the signal output from the second transmitter and frequency converted by said first frequency converter from the antenna element included in the second transmitter;
inputs the output that is the signal from said second transmitter and received by said additional antenna and frequency converted by said second frequency converter into said calibration receiver and detects the second measured value obtained at said calibration receiver;
calculates the ratio of said second measured value and said first measured value to serve as the first calibration value;
finds the first calibration value for the respective plurality of branches based on the first measured value and the second measured value measured by respectively switching in sequence the selection of the first transmitter an the second transmitter; and
calibrates the first calibration value of the relevant branch using the first calibration value obtained at the other branches for branches other than the reference branch assigned in advance, and calculates the first calibration value as a relative value with respect to the reference branch.
- N transmitters and receivers;
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15. An adaptive array antenna transceiver apparatus according to claim 13, wherein the calibration control circuit;
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controls said first switch, second switch, and third switch, and selects from among said N transmitters the first transmitter or the second transmitter respectively included in branches of two antenna elements that have equal distances from said additional antenna, and at the same time, selects from among N transmitters one calibration transmitter included in a branch different from that of said first receiver and second receiver;
transmits the signal output by said calibration transmitter from said additional antenna via said dividing device, the second common-use device, the first switch, and the third switch;
inputs the signal from said calibration transmitter received by the antenna element of the branches included in said first receiver into said first receiver and detects the first measured value obtained at said first receiver;
inputs the signal from said calibration transmitter received by the antenna element of the branch included in said second receiver into said second receiver and detects a second measured value obtained at said second receiver;
calculates the ratio of said second measurement value and first measurement value as a first calibration value;
finds the first calibration values of the respective plurality of branches based on the first measured value and the second measured value respectively measured by switching in sequence the selection of said first receiver and second receiver; and
calibrates the fist calibration value of the relevant branch using the first calibration value obtained at the other branches, and calculates the first calibration value as a relative value with respect to the reference branch.
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16. An adaptive array antenna transceiver apparatus according to claim 13, wherein said N antenna elements are disposed at an equal distance on one straight line, and at the same time, said additional antenna is disposed at a position at the middle of two antenna elements.
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17. An adaptive array antenna transceiver apparatus according to claim 13, wherein N antenna elements are disposed at equal distances on a circle, and at the same time, said additional antenna at the center position of said circle.
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18. An adaptive array antenna transceiver apparatus according to claim 13, wherein:
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a combiner that combines the received signal from said first common-use device and the received signal output by said second frequency converter, and outputs this signal to said receiver is provided instead of said second switch;
a calibration/reception signal separation circuit separates/outputs the reception signal from said first common-use device and the received signal output by said second frequency converter is further provided; and
whereinsaid calibration control circuit controls the connection state of said first switch, inputs the received signal output by said second frequency converter separated by said calibration/reception signal separating circuit, and finds the calibration value of each of the branches of said array antenna.
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19. An adaptive array antenna transceiver apparatus comprising N antenna elements, N is an integral number and shows two or more;
- N transmitters and receivers;
a common-use device that connects said respective transmitters and receivers to each of the antenna elements; and
a radiation pattern control processor that controls the radiation pattern of the array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each of the respective antenna elements into said plurality of receivers, and at the same time, the reception frequency of array antenna to be used in communication and the transmitting frequency are different, which provides;N transmitters for which the frequency of the transmitted signal is identical to the reception frequency of said array antenna;
a first frequency converter that converts the frequency of signals transmitted by each of said N transmitters to the transmission frequency of said array antenna;
N first dividing devices that extract a signal from the output of each of said N transmitters before conversion by said first frequency converter;
N second dividing devices that extract a signal output from said first frequency converter after conversion at each of the branches of the array antenna;
N receivers for which the frequency of the reception signal is identical to the reception frequency of said array antenna;
a second frequency converter that converts a signal having a frequency identical to the transmitted frequency of said array antenna to a frequency identical to the reception frequency of said array antenna;
N first common-use devices provided between the output of said first frequency converter, the input of said receiver, and each of said antenna elements;
N second common-use device provided between the output of the dividing device, the input of the second frequency converter, and each of said antenna elements;
at least one additional antenna that can be connected to any one of said N transmitters or the N receivers;
a first switch provided on each of the antenna elements that connects either one of said antenna elements or additional antenna to either one of said first common-use device or second common-use device;
a second switch that connects the output of the first dividing device included in the reference branch assigned in advance to the input of the receiver in any one branch;
a third switch that connects any one of the outputs of said N second dividing devices included in each of the branches to the input of the second frequency converter included in said reference branch;
a fourth switch that connects either the output of said third switch or the second common-use device included in said reference branch to the input of the second frequency converter included in said reference branch;
a fifth switch that, in each of the branches, selects any one of the reception signals from the said common-use device, the signal output by said second frequency converter, or the signal from the transmitter output by said second switch, and applies it to the input of said receiver;
a sixth switch that connects said additional antenna to any one of the first switches; and
a calibration control circuit that controls said first switch, second switch, third switch, fourth switch, fifth switch, and sixth switch, and at the same time, finds the amplitude and phase calibration values between branches based on the amplitude and phase values obtained from each of said receivers. - View Dependent Claims (20)
a combiner that combines the received signal from said first common-use device and the signal from said second frequency converter, or the received signal from said first common-use device and the signal from the transmitter output by said second switch, and outputs this signal to said receiver is provided instead of said fifth switch;
a calibration/reception signal separation circuit separates/outputs the reception signal from said first common-use device and the signal output by said second frequency converter, or separates/outputs the reception signal from said first common-use device and the signal from transmitter output by said second switch is further provided; and
wherein;
said calibration control circuit controls the connection state of said first switch, second switch, and third switch, inputs the signal from the second frequency converter separated by said calibration/reception signal separating circuit or the signal from the transmitter output by said second switch separated by said calibration/reception signal separating circuit, and finds the calibration value of each of the branches of said array antenna.
- N transmitters and receivers;
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21. An adaptive array antenna transceiver apparatus comprising N antenna elements, N is an integral number and shows two or more;
- N transmitters and receivers, a first common-use device that respectively connects said transmitter and receiver to each of the antenna elements, and a radiation pattern control processor that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each respective antenna element to said plurality of receivers, and at the same time, the reception frequency and the transmitted frequency of said array antenna used in communication are different, and the frequency of the signal output by each of said transmitters is f1 and the reception frequency of each of said receivers is f2, which provides;
at least one additional antenna disposed at a position such that the distances between at least two antenna elements of said array antenna are equal;
a second common-use device connected to said additional antenna;
at least one first frequency converter that converts the signal having a frequency of f1 output from one transmitter to the frequency f2 and outputs it into said second common-use device, and at the same time, converts the signal having a frequency of f1 input from said second common-use device to a frequency f2 and outputs it;
at least one dividing device that inputs into said frequency converter the signal extracted from at least one output of said N transmitters;
at least one first switch that connects the input of at least one of said N receivers to any one of said first common-use devices and said frequency transformers; and
a calibration control circuit that controls said first switch, and finds the amplitude and phase calibration values between branches of the array antenna based on the amplitude and phase values obtained from each of said receivers. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
a second switch that connects said dividing devices to the respective output of said N transmitters, connects said first switch to the respective inputs of said N receivers, and selectively connects any one of the dividing devices connected to said N transmitters to the input of said frequency converter; and
a third switch that selectively connects the output of said frequency converter to any one of the first switches connected to said N receivers are provided.
- N transmitters and receivers, a first common-use device that respectively connects said transmitter and receiver to each of the antenna elements, and a radiation pattern control processor that controls the radiation pattern of said array antenna by synthesizing the output of the plurality of receivers by weighting the amplitude and phase with respect to a signal input from each respective antenna element to said plurality of receivers, and at the same time, the reception frequency and the transmitted frequency of said array antenna used in communication are different, and the frequency of the signal output by each of said transmitters is f1 and the reception frequency of each of said receivers is f2, which provides;
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23. An adaptive array antenna transceiver apparatus according to claim 21, wherein the calibration control circuit:
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controls the first switch and connects the output of said frequency converter to the input of the one receiver assigned to the selected calibration receiver from among said N receivers;
selects in sequence one of said N transmitters to be a calibration transmitter and outputs the signal from the selected calibration transmitter;
inputs the signal output from said calibration transmitter and transmitted via said first common-use device and said antenna element connected thereto to said calibration receiver via said additional antenna, the second common-use device, the frequency converter, and the first switch;
and finds the amplitude and phase calibration values between branches of the array antenna based on the measured values detected at said calibration receiver for the signal output from the calibration transmitter of the respective branch.
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24. An adaptive array antenna apparatus according to claim 21, wherein said calibration control circuit:
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controls said first switch and connects the input of the receiver connected thereto to said first common-use device;
assigns one of said N transmitters to be a calibration transmitter and outputs the signal from said calibration transmitter;
selects in sequence one of said N receivers to be the calibration receiver, inputs a signal output from said calibration transmitter and transmitted from said additional antenna after passing through said dividing device, a frequency converter, and a second common-use device, into said calibration receiver via the antenna elements of the branches and first common-use device included in said calibration receiver; and
finds the amplitude and phase calibration values between branches of the array antenna based on the measured values detected at the calibration receivers of the respective branches.
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25. An adaptive array antenna transceiver apparatus according to claim 22, wherein the calibration control circuit:
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controls said first switch and connects the output of said frequency converter to the input of the one receiver among said N receivers assigned to be the calibration receiver;
selects in sequence as a calibration transmitter one of said N transmitters and output the signal from the selected calibration transmitter;
splits the signal output from said calibration transmitter by said dividing device and inputs the result into the frequency converter via said second switch and applies the signal output by said frequency converter to the input of the calibration receiver via said third switch and first switch; and
finds the amplitude and phase calibration values between the branches of the array antenna based on the measured values detected by said calibration receiver for the signal output from the calibration transmitter for the respective branches.
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26. An adaptive array antenna transceiver apparatus according to claim 22, wherein the calibration control circuit:
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assigns one of said N transmitters to be the calibration transmitter and outputs a signal from said calibration transmitter;
selects in sequence one of said N receivers to be the calibration receiver;
splits signals output from the calibration transmitter by said dividing device, applies them to the input of the frequency converter via said second switch, and applies the signal output from said frequency converter to the input of the calibration receiver via said third switch and said first switch; and
finds the amplitude and phase calibration values between branches of the array antenna based on the measured values detected at the calibration receivers of the respective branches.
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27. An adaptive array antenna transceiver apparatus according to claim 21, further provides a first frequency converter in which the signal having the frequency f1 output from one transmitter is converted to a signal having the frequency f2, and a second frequency converter in which a signal having a frequency f1 input from said second common-use device is converted to a signal having a frequency f2.
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28. An adaptive array antenna transceiver apparatus according to claim 21, wherein the N antenna elements are disposed on one straight line, and in addition, said additional antenna is disposed at a position at the middle of two antenna elements.
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29. An adaptive array antenna transceiver apparatus according to claim 21, wherein said N antenna elements are disposed at equal intervals on one circle, and at the same time, said additional antenna is disposed at the center position of said circle.
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30. An adaptive array antenna transceiver apparatus according to claim 21, wherein:
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a combiner that combines a signal from said first common-use device and a signal from said frequency converter, and outputs this signal to said receiver, is provided instead of said first switch;
a calibration/reception signal separator circuit that separates/outputs a signal from said first common-use device and signals from said frequency converter for the output of said receiver is further provided; and
said calibration control circuit that inputs a signal from said frequency converter separated by each of said calibration/reception signal separator circuits, and finds the calibration value of each of the branches of said array antenna.
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Specification