Transmit-receive module for phased-array antennas

A transmit-receive module for connection to radiating element positions of a phased-array antenna system having a transmit and receive manifold system, said module comprising:

• means for dividing a signal path between an associated radiating element and a transmit and receive manifold system into transmit and receive signal paths;
• a first phase shifter located in the transmit signal path, said phase shifter utilizing a PIN diode to shift the phase and having a first bit resolution;
• a second phase shifter located in the receive signal path, said phase shifter utilizing a small signal field effect transistor to shift the phase and having a second bit resolution, said second bit resolution being greater than said first bit resolution;
• power amplifier means located in the transmit signal path;
• low noise amplifier means located in the receive signal path;
• means for connecting said first and second phase shifters to the manifold system of the phase-array antenna;
• a conducting septum physically located between said first and second phase shifters to prevent oscillation between said first and second phase shifters;
• and
• said first phase shifter operating independently of and electrically isolated from said second phase shifter.

A transmit-receive module for connection to radiating element positions of an active phased-array antenna system having a transmit and receive manifold system, said module comprising:

• means for dividing a signal path between an associated radiating element and a transmit and receive manifold system into transmit and receive signal paths;
• first vector modulator means in said transmit path for shifting the phase and changing the amplitude of signals passed through said transmit path from said transmit and receive manifold system to said dividing means;
• second vector modulator means in said receive path for shifting the phase and changing the amplitude of signals passed through said receive path from said dividing means to said transmit and receive manifold system, said second vector modulator means operating independently of and electrically isolated from said first vector modulator means;
• and
• means for connecting said first and second vector modulator means to said transmit and receive manifold system.

A transmit-receive module for connection to radiating element positions of a phased-array antenna system having a transmit and receive manifold system, said module comprising:

• means for dividing a signal path between an associated radiating element and a transmit and receive manifold system into transmit and receive signal paths;
• first vector modulator means in said transmit path for shifting the phase and changing the amplitude of signals passed through said transmit path from said transmit and receive manifold system to said dividing means;
• second vector modulator means in said receive path for shifting the phase and changing the amplitude of signals passed through said receive path from said dividing means to said transmit and receive manifold system, said first and second vector modulator means being controlled independently of each other in response to temperature signals, said first and second vector modulator means operating independently of and electrically isolated from each other;
• power amplifier means positioned in said transmit signal path;
• low noise amplifier means positioned in said receive signal path;
• means for connecting said first and second vector modulator means to said phased-array antenna manifold system;
• and
• a conducting septum physically positioned between said first and second vector modulator means to prevent oscillation between said first and second vector modulator means.