Full-duplex single-panel antenna system for satellite and telecommunicaiton systems

A method for increasing isolation in full-duplex antenna systems, the method comprising:

• providing a full-duplex antenna system, the full-duplex antenna system comprising:
• a transmit (Tx) signal path comprising:
• a Tx distribution network;
• a beamforming Tx Radio-Frequency Integrated Circuit (RFIC), the beamforming Tx RFIC having outputs to one or more Tx ports of a Tx antenna, the beamforming Tx RFIC including a first amplitude control circuit and a first phase control circuit;
• and
• a first group of one or more filtering structures;
• wherein the Tx antenna being capable of operating at a Tx frequency band to transmit an outgoing signal to a communication system;
• and
• a receive (Rx) signal path comprising:
• an Rx distribution network;
• a beamforming Rx Radio-Frequency Integrated Circuit (RFIC), the beamforming Rx RFIC having outputs to one or more Rx ports of an Rx antenna, the beamforming Rx RFIC including a second amplitude control circuit and a second phase control circuit;
• a second group of one or more filtering structures;
• wherein the Rx antenna being capable of operating at a Rx frequency band to receive an incoming signal from the communication system;
• and
• one or more passive isolation structures interconnected between the Tx signal path and the Rx signal path;
• wherein the first and second groups of filtering structures together with the passive isolation structures form an isolation between the Tx signal path and the Rx signal path, the isolation being greater than or equal to a threshold amount to allow the full-duplex antenna system to operate in the full-duplex mode;
• wherein the threshold amount being equal to a power level that is transmitted out of the full-duplex antenna system to a communications system at a highest determined frequency of the Rx frequency band minus a power level of a noise floor of the low-noise amplifier at a highest determined frequency of the Rx frequency band;
• and
• operating the full-duplex antenna system in a full-duplex mode, comprising:
• providing filtering isolation on the Tx signal path using the first group of one or more filtering structures;
• providing filtering isolation on the Rx signal path using the second group of one or more filtering structures;
• and
• providing isolation between the Tx signal path and the Rx signal path using the one or more passive isolation structures.