Method and apparatus capable of determining and utilizing radio wave directional information
First Claim
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1. An apparatus comprising:
- a plurality of RF antennas, said plurality of RF antennas having a calibrated radiation pattern; and
a calculation circuit using a directional finding program which receives RF signal information from said plurality of RF antennas and RF antenna calibrated radiation pattern information and calculates the direction from which said RF signals emanate relative to said apparatus, wherein said direction finding program is Max(abs(S_i)/max(abs(D_i(theta))), where D_i is the antenna radiation pattern at a given angle theta and S is the input signal information with i representing the number of antennas.
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Abstract
Briefly, in accordance with one embodiment of the invention, an apparatus comprises a plurality of RF antennas, the plurality of RF antennas have a calibrated radiation pattern. The apparatus may further comprise a directional finding program that receives RF signal information from said plurality of RF antennas and RF antenna calibrated radiation pattern information and then calculates the direction from which said RF signals emanate relative to said apparatus.
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Citations
29 Claims
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1. An apparatus comprising:
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a plurality of RF antennas, said plurality of RF antennas having a calibrated radiation pattern; and a calculation circuit using a directional finding program which receives RF signal information from said plurality of RF antennas and RF antenna calibrated radiation pattern information and calculates the direction from which said RF signals emanate relative to said apparatus, wherein said direction finding program is Max(abs(S_i)/max(abs(D_i(theta))), where D_i is the antenna radiation pattern at a given angle theta and S is the input signal information with i representing the number of antennas. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A method capable of determining radio wave directional information relative to an apparatus, comprising:
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calibrating a radiation pattern for a plurality of RF antennas associated with said apparatus, said antennas capable of receiving RF signals; and using a calculation circuit to calculate directional information of said RF signals, said calculation performed by a program that uses said RF signal information from said plurality of RF antennas and said RF antenna calibrated radiation pattern information, wherein said direction finding program is Max(abs(S_i)/max(abs(D_i(theta))), where D_i is the antenna radiation pattern at a given angle theta and S is the input signal information and i representing the number of antennas. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A system comprising:
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a wireless device within said system including a computation circuit with a directional finding program; at least two RF antennas associated with said wireless device and capable of receiving RF signals; and said computation circuit with a directional finding program determines an angle of arrival of said RF signals relative to said wireless device, and wherein said direction finding program is Max(abs(S_i)/max(abs(D_i(theta))), where D_i is the antenna radiation pattern at a given angle theta and S is the input signal information with i representing the number of antennas. - View Dependent Claims (23, 24, 25, 26, 27, 28, 29)
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Specification