Very interesting article in the latest IEEE Antennas & Propagation Magazine
Pseudo broadband omni that allows TX and RX on the same freq.
The orientation of the elements provides something like 50 dB reduction of
mutual coupling between the TX and RX signal.
Then there is an analog cancellation stage that give another about 30 dB of
cancellation.
Then there is a digital section that automagically does another 30+ dB of
cancellation.
The TX signal ends up being down like 110-120 dB when it hits the receiver.
If this can be perfected we double our channel throughput...
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