A novel scheme for reception using an active microstrip antenna

An unique aspect of the injection-locked active microstrip antenna incorpor ating a Gunn diode, i.e., the variation of the device current within the lo ck band, is exploited for the demodulation of an FM microwave signal. A sim ple experimental arrangement has been presented to demonstrate the demodula tion performance of the receiver even in a multichannel environment. Using two such separate antennas as transmitter and receiver, a two-way short-ran ge communication system has been demonstrated that may be suited for certai n commercial and military applications.