Same-aperture any-frequency simultaneous transmit and receive communication system
First Claim
1. A same-aperture any-frequency simultaneously transmit and receive (STAR) system, the system comprising:
- a) a signal connector having a first port, a second port electrically coupled to a transmit signal path, and a third port electrically coupled to a receive signal path, the signal connector passing a transmit signal in the transmit signal path to the first port and passing from the first port a receive signal to the receive signal path, wherein the transmit signal and the receive signal occupy a same signal frequency at a same time; and
b) a signal differencing device having a first input electrically coupled to the transmit signal path and a second input electrically coupled to the third port of the signal connector, the signal differencing device subtracting a portion of the transmit signal in the receive signal path, thereby providing a more accurate copy of the receive signal.
1 Assignment
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Accused Products
Abstract
A same-aperture any-frequency simultaneously transmit and receive (STAR) system includes a signal connector having a first port electrically coupled to an antenna, a second port electrically coupled to a transmit signal path, and a third port electrically coupled to receive signal path. The signal connector passes a transmit signal in the transmit signal path to the antenna and a receive signal in the receive signal path. A signal isolator is positioned in the transmit signal path to remove a residual portion of the receive signal from transmit signal path. An output of the signal isolator provides a portion of the transmit signal with the residual portion of the receive signal removed. A signal differencing device having a first input electrically coupled to the output of the signal isolator and a second input electrically coupled to the third port of the signal connector subtracts a portion of the transmit signal in the receive signal path thereby providing a more accurate receive signal.
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Citations
31 Claims
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1. A same-aperture any-frequency simultaneously transmit and receive (STAR) system, the system comprising:
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a) a signal connector having a first port, a second port electrically coupled to a transmit signal path, and a third port electrically coupled to a receive signal path, the signal connector passing a transmit signal in the transmit signal path to the first port and passing from the first port a receive signal to the receive signal path, wherein the transmit signal and the receive signal occupy a same signal frequency at a same time; and b) a signal differencing device having a first input electrically coupled to the transmit signal path and a second input electrically coupled to the third port of the signal connector, the signal differencing device subtracting a portion of the transmit signal in the receive signal path, thereby providing a more accurate copy of the receive signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method of same-aperture any-frequency simultaneously transmitting and receiving, the method comprising:
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a) connecting a receive signal from a port with a transmit signal from a transmit signal path so that the receive signal is passed to a receive signal path and the transmit signal is passed from the transmit signal path to the port, wherein the transmit signal and the receive signal occupy a same signal frequency at a same time; and b) subtracting a portion of the transmit signal in the transmit signal path from the receive signal in the receive signal path, thereby removing a residual portion of the transmitted signal from the receive signal path making a more accurate representation of the receive signal. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27)
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28. A same-aperture any-frequency simultaneously transmit and receive (STAR) system, the system comprising:
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a) means for connecting a receive signal with a transmit signal so that the receive signal is passed to a receive signal path and the transmit signal is passed from the transmit signal path to a port, wherein the transmit signal and the receive signal occupy a same signal frequency at a same time; and b) means for subtracting a portion of the transmit signal from the receive signal in the receive signal path, thereby removing a residual portion of the transmit signal from the receive signal path making a more accurate representation of the receive signal. - View Dependent Claims (30, 31)
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29. The system of system 28 wherein the means for subtracting a portion of the transmit signal from the receive signal in the receive signal path comprises subtracting the portion of the transmit signal from the receive signal in the receive signal path with an analog signal differencing device.
Specification