Proceedings. Second Annual Conference on Communication Networks and Services Research
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Abstract

In this paper, a subharmonic injection-locked oscillating antenna, operating simultaneously as a frequency doubler, and as a QPSK modulator, is presented. A dual-gate MESFET is used with one of its gates integrated with a PIN-diode switch controlled patch antenna and the other gate connected to a low-noise subharmonic stabling signal. The experimental and simulation results demonstrate the possibility of the simultaneous realization of frequency multiplication by subharmonic injection locking and phase modulation through DC bias and PIN diode switch.
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