E-band radio transceiver architecture and chip set
First Claim
1. A MMIC-based E-Band transceiver front-end comprising:
- a first MMIC device comprising,a transmission circuit for receiving a data stream input at a baseband frequency, mixing the data stream with an LO signal having an E-Band frequency, and transmitting a resultant data stream at an upconverted E-Band frequency;
a receiver circuit for receiving a data stream having an E-Band frequency, mixing the received data stream with an LO signal having an E-Band frequency, and downconverting the resultant mixed received signal to an intermediate frequency (IF); and
an LO signal circuit for dividing a received LO signal at an E-Band frequency and communicating the LO signal to said transmission and receiver circuits;
a second MMIC device comprising a multiplier circuit for receiving an LO signal at a reference frequency, and multiplying the LO signal to an E-Band frequency;
a third MMIC device comprising,a second downconversion circuit for mixing the mixed received IF signal with an LO signal, and downconverting the resultant mixed received signal to a baseband frequency, andan LO generation circuit for generating an LO signal, communicating the LO signal to said second MMIC device, coupling the LO signal, dividing the coupled LO signal, and communicating the divided LO signal to the second downconversion circuit.
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Accused Products
Abstract
A GaAs E-Band transceiver front-end chip set is provided comprising three MMIC devices. The first device includes a circuit for receiving data at baseband, mixing the data with an LO signal having an E-Band frequency, and transmitting a resultant data stream at an upconverted E-Band frequency; a circuit for receiving data having an E-Band frequency, mixing the received data with an LO signal having an E-Band frequency, and downconverting the resultant mixed received signal to an IF; and a circuit for dividing a received LO signal at an E-Band frequency and communicating the LO signal to the transmission and receiver circuits. The second device comprises a circuit for receiving an LO signal at a reference frequency, and multiplying the LO signal to an E-Band frequency. The third device comprises a circuit for mixing the mixed received IF signal with an LO signal, and downconverting the resultant mixed received signal to a baseband frequency, and a circuit for generating an LO signal, communicating the LO signal to the second device, coupling the LO signal, dividing the coupled LO signal, and communicating the divided LO signal to the second downconversion circuit. The first and second devices may be manufactured by a p-HEMT process and the third device is manufactured by a MESFET process. Additionally, an E-Band communications system is provided which utilizes the aforementioned chip set.
59 Citations
63 Claims
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1. A MMIC-based E-Band transceiver front-end comprising:
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a first MMIC device comprising, a transmission circuit for receiving a data stream input at a baseband frequency, mixing the data stream with an LO signal having an E-Band frequency, and transmitting a resultant data stream at an upconverted E-Band frequency; a receiver circuit for receiving a data stream having an E-Band frequency, mixing the received data stream with an LO signal having an E-Band frequency, and downconverting the resultant mixed received signal to an intermediate frequency (IF); and an LO signal circuit for dividing a received LO signal at an E-Band frequency and communicating the LO signal to said transmission and receiver circuits; a second MMIC device comprising a multiplier circuit for receiving an LO signal at a reference frequency, and multiplying the LO signal to an E-Band frequency; a third MMIC device comprising, a second downconversion circuit for mixing the mixed received IF signal with an LO signal, and downconverting the resultant mixed received signal to a baseband frequency, and an LO generation circuit for generating an LO signal, communicating the LO signal to said second MMIC device, coupling the LO signal, dividing the coupled LO signal, and communicating the divided LO signal to the second downconversion circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A MMIC-based E-Band transceiver front-end comprising:
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a first MMIC device comprising, a transmission circuit comprising a fundamental transmission mixer, at least one transmission amplifier downstream said transmission mixer, wherein a data steam is input into said transmission mixer, and wherein an output from said at least one amplifier is transmitted; a receiver circuit comprising a low noise amplifier, a receiver bandpass filter downstream said low noise amplifier, and a fundamental receiver mixer, wherein a received signal is communicated to an input of said low noise amplifier, and wherein an output of said receiver mixer is communicated to a third MMIC device; and an LO signal circuit comprising a power divider, a transmission LO amplifier in communication with a first output of said power divider, and a receiver LO amplifier in communication with a second output of said power divider, wherein an output of said transmission LO amplifier is communicated to an input of said transmission mixer, and an output of said receiver LO amplifier is communicated to an input of said receiver mixer; a second MMIC device comprising a multiplier circuit comprising an X2 multiplier, a first multiplier circuit bandpass filter downstream of said X2 multiplier, a multiplier circuit amplifier downstream of said first multiplier circuit bandpass filter, a X4 multiplier downstream of multiplier circuit amplifier, and a second multiplier circuit bandpass filter downstream of said X4 multiplier, wherein an output of said X4 multiplier is communicated to an input of said power divider of said first MMIC device; said third MMIC device comprising, an IF circuit comprising an IF amplifier, a low pass filter downstream of said IF amplifier, and a baseband mixer downstream of said low pass filter, wherein an output of said receiver mixer from said first MMIC device is communicated to an input of said IF amplifier, and wherein said baseband mixer provides an output data stream; and an LO generation circuit comprising a fixed tuned oscillator, a first buffering amplifier downstream of said fixed tuned oscillator, a coupler between said fixed tuned oscillator and said first buffering amplifier, a third MMIC device power divider downstream of said coupler, and a second buffering amplifier downstream of a first output of said third MMIC device power divider, wherein an output from said first buffering amplifier is communicated to an input of said X2 multiplier of said second MMIC device. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25)
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26. A MMIC-based E-Band transceiver front-end comprising:
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a first MMIC device comprising, a transmission circuit comprising a sub-harmonic transmission mixer, at least one transmission amplifier downstream said transmission mixer, wherein a data steam is input into said transmission mixer, and wherein an output from said at least one amplifier is transmitted; a receiver circuit comprising a low noise amplifier, a receiver bandpass filter downstream said low noise amplifier, and a sub-harmonic receiver mixer, wherein a received signal is communicated to an input of said low noise amplifier, and wherein an output of said receiver mixer is communicated to a third MMIC device; and an LO signal circuit comprising a power divider, a transmission LO amplifier in communication with a first output of said power divider, and a receiver LO amplifier in communication with a second output of said power divider, wherein an output of said transmission LO amplifier is communicated to an input of said transmission mixer, and an output of said receiver LO amplifier is communicated to an input of said receiver mixer; a second MMIC device comprising a multiplier circuit comprising a multiplier circuit amplifier, a X4 multiplier downstream of said multiplier circuit amplifier, and a multiplier circuit bandpass filter downstream of said X4 multiplier, wherein an output of said multiplier circuit bandpass filter is communicated to an input of said power divider of said first MMIC device; and said third MMIC device comprising, an IF circuit comprising an IF amplifier, a low pass filter downstream of said IF amplifier, and a baseband mixer downstream of said low pass filter, wherein an output of said receiver mixer from said first MMIC device is communicated to an input of said IF amplifier, and wherein said baseband mixer provides an output data stream; and an LO generation circuit comprising a fixed tuned oscillator, a first buffering amplifier downstream of said fixed tuned oscillator, a coupler between said fixed tuned oscillator and said first buffering amplifier, a third MMIC device power divider downstream of said coupler, and a second buffering amplifier downstream of a first output of said third MMIC device power divider, wherein an output from said first buffering amplifier is communicated to an input of said multiplier circuit amplifier of said second MMIC device. - View Dependent Claims (27, 28, 29, 30, 31, 32, 33, 34)
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35. A MMIC-based E-Band transceiver front-end consisting:
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a first MMIC device consisting, a transmission circuit consisting of a sub-harmonic transmission mixer, and a transmission amplifier downstream said transmission mixer, wherein a data steam is input into said transmission mixer, and wherein an output from said at least one amplifier is transmitted; a receiver circuit consisting of a low noise amplifier, a receiver bandpass filter downstream said low noise amplifier, and a sub-harmonic receiver mixer, wherein a received signal is communicated to an input of said low noise amplifier, and wherein an output of said receiver mixer is communicated to a second MMIC device; and an LO signal circuit consisting of a power divider, a transmission LO amplifier in communication with a first output of said power divider, and a receiver LO amplifier in communication with a second output of said power divider, wherein an output of said transmission LO amplifier is communicated to an input of said transmission mixer, and an output of said receiver LO amplifier is communicated to an input of said receiver mixer; and a second MMIC device consisting, a multiplier circuit consisting of a first buffering amplifier, an X4 multiplier downstream of said first buffering amplifier, and a multiplier circuit bandpass filter downstream of said X4 multiplier, wherein an output of said multiplier circuit bandpass filter is communicated to an input of said power divider of said first MMIC device; an IF circuit consisting of an IF amplifier, a low pass filter downstream of said IF amplifier, and a baseband mixer downstream of said low pass filter, wherein an output of said receiver mixer from said first MMIC device is communicated to an input of said IF amplifier, and wherein said baseband mixer provides an output data stream; and an LO generation circuit consisting of a fixed tuned oscillator having an output in communication with an input of said first buffering amplifier of said multiplier circuit, a coupler between said fixed tuned oscillator and said first buffering amplifier, a second MMIC device power divider downstream of said coupler, and a second buffering amplifier downstream of a first output of said second MMIC device power divider. - View Dependent Claims (36, 37, 38, 39, 40, 41)
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42. A MMIC device comprising:
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a transmission circuit comprising a fundamental transmission mixer, at least one transmission amplifier downstream said transmission mixer, wherein a data steam is input into said transmission mixer, and wherein an output from said at least one amplifier is transmitted; a receiver circuit comprising a low noise amplifier, a receiver bandpass filter downstream said low noise amplifier, and a fundamental receiver mixer, wherein a received signal is communicated to an input of said low noise amplifier; and an LO signal circuit comprising a power divider, a transmission LO amplifier downstream and in communication with a first output of said power divider, and a receiver LO amplifier downstream and in communication with a second output of said power divider, wherein an output of said transmission LO amplifier is communicated to an input of said transmission mixer, and an output of said receiver LO amplifier is communicated to an input of said receiver mixer.
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43. A MMIC device comprising:
a multiplier circuit comprising an X2 multiplier, a first multiplier circuit bandpass filter downstream of said X2 multiplier, a multiplier circuit amplifier downstream of said first multiplier circuit bandpass filter, a X4 multiplier downstream of multiplier circuit amplifier, and a second multiplier circuit bandpass filter downstream of said X4 multiplier.
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44. A MMIC device comprising:
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an IF circuit comprising an IF amplifier, a low pass filter downstream of said IF amplifier, and a baseband mixer downstream of said low pass filter, wherein an output of said receiver mixer from said first MMIC device is communicated to an input of said IF amplifier, and wherein said baseband mixer provides an output data stream; and an LO generation circuit comprising a fixed tuned oscillator, a first buffering amplifier downstream of said fixed tuned oscillator, a coupler between said fixed tuned oscillator and said first buffering amplifier, a third MMIC device power divider downstream of said coupler, and a second buffering amplifier downstream of a first output of said third MMIC device power divider.
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45. A MMIC device comprising:
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a transmission circuit comprising a sub-harmonic transmission mixer, at least one transmission amplifier downstream said transmission mixer, wherein a data stream is input into said transmission mixer, and wherein an output from said at least one amplifier is transmitted; a receiver circuit comprising a low noise amplifier, a receiver bandpass filter downstream said low noise amplifier, and a sub-harmonic receiver mixer, wherein a received signal is communicated to an input of said low noise amplifier; and an LO signal circuit comprising a power divider, a transmission LO amplifier downstream and in communication with a first output of said power divider, and a receiver LO amplifier downstream and in communication with a second output of said power divider, wherein an output of said transmission LO amplifier is communicated to an input of said transmission mixer, and an output of said receiver LO amplifier is communicated to an input of said receiver mixer.
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46. A MMIC device comprising:
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a multiplier circuit comprising a first buffering amplifier, an X4 multiplier downstream of said first buffering amplifier, and a multiplier circuit bandpass filter downstream of said X4 multiplier; an IF circuit comprising an IF amplifier, a low pass filter downstream of said IF amplifier, and a baseband mixer downstream of said low pass filter, wherein an output of said receiver mixer from said first MMIC device is communicated to an input of said IF amplifier, and wherein said baseband mixer provides an output data stream; and an LO generation circuit comprising a fixed tuned oscillator having an output in communication with an input of said first buffering amplifier of said multiplier circuit, a coupler between said fixed tuned oscillator and said first buffering amplifier, a second MMIC device power divider downstream of said coupler, and a second buffering amplifier downstream of a first output of said second MMIC device power divider.
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47. An E-Band communications system comprising a plurality of E-Band stations adapted to communicate with each other, each station comprising a MMIC-based E-Band transceiver front-end, a modem, baseband equipment, and a data source, said MMIC-based E-Band transceiver front-end comprising:
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a first MMIC device comprising, a transmission circuit for receiving a data stream input at a baseband frequency, mixing the data stream with an LO signal having an E-Band frequency, and transmitting a resultant data stream at an upconverted E-Band frequency; a receiver circuit for receiving a data stream having an E-Band frequency, mixing the received data stream with an LO signal having an E-Band frequency, and downconverting the resultant mixed received signal to an intermediate frequency (IF); and an LO signal circuit for dividing a received LO signal at an E-Band frequency and communicating the LO signal to said transmission and receiver circuits; a second MMIC device comprising a multiplier circuit for receiving an LO signal at a reference frequency, and multiplying the LO signal to an E-Band frequency; a third MMIC device comprising, a second downconversion circuit for mixing the mixed received IF signal with an LO signal, and downconverting the resultant mixed received signal to a baseband frequency, and an LO generation circuit for generating an LO signal, communicating the LO signal to said second MMIC device, coupling the LO signal, dividing the coupled LO signal, and communicating the divided LO signal to the second downconversion circuit. - View Dependent Claims (48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61, 62, 63)
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Specification