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In order to enable multifunction arrays with simultaneous transmit and receive, high isolation must be provided between antenna elements. This isolation should ideally be independent of the waveforms being transmitted. In this paper, a tunable baffle design is presented which provides over 30 dB of improvement in isolation for bandwidths of 7.5 MHz between adjacent antennas. This isolation can be...
Simultaneous transmit and receive requires extremely high isolation between the transmitters and receivers. By designing an antenna array to have high isolation between elements, it is possible to enable simultaneous transmit and receive at the same frequency. In this paper, a technique to achieve over 70 dB of inter-element isolation using tunable resonators placed between antenna elements is demonstrated...
Concurrent transmit and receive with multiple antennas is demonstrated through near field cancellation. Full-duplex operation is possible through cancellation of the transmit signal at the receiver as much as 50dB. By exploiting symmetry in an array of antennas, a centrally located receiver is able to operate without saturation in the presence of high power transmit signals. The transmitters are able...
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