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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...
Although direct conversion transmitters and receivers share the same structure certain differences in their behavior can be found. These differences result in diverse performance limitations. This paper derives a linear model of direct conversion transmitters and receivers. Based on this model methods to extract the frequency dependent characteristics are introduced and compensators are suggested...
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