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An interleaved, interelement phase-detecting/phase-shifting retrodirective antenna array for interference reduction is presented. This system uses two independent retrodirective subarrays to form a null in one direction while retrodirecting a beam in another direction, while also eliminating the path loss of previous interleaved architectures. Retrodirectivity as well as null steering is reported...
An overview of the progress made in the RDA field has been presented. The reflect-type architecture that is perhaps most useful for communication purposes is likely to be the phase-conjugating Pon array; this architecture is capable of handling nonuniform wavefronts though it suffers from a large path loss. To correct the path loss issue associated with reflect type arrays, RDAs based on phase- and...
A full-duplex self-steering array using power detection and phase shifting is presented. The system utilizes two sub-arrays to autonomously steer its beam toward an interrogating signal. A two-element null-scanning array is used for power detection where the interrogator direction is determined by the location where minimum power is detected. Retrodirectivity is reported for angles of 0°, -30°, and...
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