CPC H04B 7/0426 (2013.01) [H04B 1/1607 (2013.01); H04B 1/40 (2013.01)] | 2 Claims |
1. A system for wireless simultaneous transmit and receive (STAR), the system comprising:
at least one multi-input multi-output (MIMO) radiofrequency (RF) front-end,
each MIMO RF front-end comprising:
an RF-shielded anechoic chamber;
a symmetrical pair of arrays comprising a first array configured for communication and a second array symmetrical to the first array and disposed within the RF-shielded chamber; and
a pair of multi-beam beamforming networks in operable communication with the symmetrical pair of arrays,
the second array being configured as a reference for subtracting self-interference between transmitters and receivers of the system,
the pair of multi-beam beamforming networks comprising a first passive microwave multi-beam beamforming network and a second passive microwave multi-beam beamforming network identical to the first passive microwave multi-beam beamforming network,
each of the first passive microwave multi-beam beamforming network and the second passive microwave multi-beam beamforming network being a Butler-Matrix based true-time delay microwave network, a Rotman lens based microwave network, or a Luneberg lens based microwave network,
each of the first passive microwave multi-beam beamforming network and the second passive microwave multi-beam beamforming network comprising connected to each beam port thereof: a) a circulator and a differential connection; or b) a 180 hybrid coupler.
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