A differential six‐port demodulator for the 7–8 GHz band is reported for the first time. It is composed of a differential six‐port correlator on the two sides of the substrate and zero‐bias antiparallel Schottky diodes acting as power detectors. It is theoretically analyzed and also simulated. A prototype has been fabricated and data transmission at 0.8 Gbit/s (but not the maximum) with the 16 quadrature amplitude modulation (QAM) is experimentally demonstrated.
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Owais et al. (2011) studied this question.
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