Pod-Mounted Antenna Self-Interference Cancellation for Airborne STAR Systems

Résumé fourni par la source

This paper presents a method for self-interference cancellation in the propagation domain, for use in airborne simul-taneous transmit and receive (STAR) systems. A configuration of three dipole antennas operating at 1.8 GHz is simulated in free space, on an aluminum mounting pod, and aboard an F-18 military jet. Two antennas are used to transmit, while the remaining antenna is used to receive. By transmitting signals of equal amplitude with opposite phase, the signals cancel at the receive antenna while the signal of interest is still received. Moreover, we show the isolation improvement compared with a single transmit, single receive antenna setup. We respectively demonstrate -55,-52, and -37 dB coupling in free space, on the pod, and aboard the F-18, all improvements over the single transmit configuration.

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