Same-aperture any-frequency simultaneous transmit and receive communication system

摘要

A simultaneous transmit and receive (STAR) system includes a first bidirectional signal port coupled to an antenna, a second port coupled to a transmit signal path, and a third port coupled to receive signal path. A first switch is electrically connected between the first port and the second port, where a transmit signal propagating in the transmit signal path passes through the first switch when closed and then through the first bidirectional signal port to the antenna where the transmit signal is radiated by the antenna. A second switch is connected between the first port and the third port, where a receive signal is received by the antenna and passes through the bidirectional signal port and then through the second switch when closed to the receive signal path. A controller is electrically connected to a control input of each of the first and second switches.

主权项

1. A simultaneous transmit and receive (STAR) system comprising:
a. a first bidirectional signal 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; b. a first switch electrically connected between the first bidirectional signal port and the second port electrically coupled to a transmit signal path, wherein a transmit signal propagating in the transmit signal path passes through the first switch when closed and then through the first bidirectional signal port to the antenna where the transmit signal is radiated by the antenna; c. a second switch electrically connected between the first bidirectional signal port and the third port electrically coupled to a receive signal path, wherein a receive signal is received by the antenna and passes through the bidirectional signal port and then through the second switch when closed to the receive signal path; and d. a controller that is electrically connected to a control input of each of the first and second switches, the controller synchronizing operation of the first and second switches for simultaneous transmit and receive, wherein the controller generates a first sampling waveform with a first sampling time that opens the first switch and an inverse first sampling waveform with a first inverse sampling time that closes the second switch to pass the received signal to the receive signal path, and generates a second sampling waveform with a second sampling time that simultaneously closes the first switch and an inverse second sampling waveform with a second inverse sampling time that opens the second switch for a second predetermined time to pass the transmit signal to the antenna.