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This paper presents a 100-GHz vector-sum differential phase shifter in 28-nm CMOS FDSOI. Gilbert-cell type active switches are used to generate 0° and 180° out of phase signals and a 90° hybrid for obtaining I-Q signals. The hybrid is a compact capacitive loaded slow-wave differential branch-line coupler which is 75% smaller than a conventional 90° hybrid. The design has an area of 0.565 mm2 including...
To improve the performance of G-band equipment for humidity sounding of the atmosphere, a high-gain and low-noise amplifier is needed. Here we describe and report the performance of several low-noise amplifier microchips intended for 183-GHz water vapor profiling application. The chips are manufactured in metamorphic high electron mobility transistor technology having a gate length of 50 nanometers...
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