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The paper presents a compact D-band monolithic sub-harmonic mixer (SHM) with 3μm planar hyperabrupt schottky-varactor diodes offered by 70nm GaAs mHEMT technology. According to empirical equivalent-circuit models, a wide-band large signal equivalent circuit model of the diode is proposed. Based on the extracted model, the mixer is implemented and optimized with a shunt-mounted anti-parallel diode...
A compact broadband monolithic microwave integrated circuit (MMIC) sub-harmonic mixer using an OMMIC 70nm GaAs mHEMT technology is demonstrated for 60GHz down-converter applications. The present mixer employs an anti-parallel diode pair (APDP) to fulfill a sub-harmonic mixing mechanism. Quasi-lumped components are employed to broaden the operational bandwidth and minimize the chip size to 1.5×0.77mm...
The paper presents the design of a 48–78GHz sub-harmonic pumped image rejection mixer (SHIRM) based on a 3μm GaAs technology. The SHIRM contains two identical 2nd APDP-Based SHP mixers, a modified quadrature-phase RF Lange coupler and an in-phase LO Wilkinson power divider. The quasi-lumped topology is utilized with the compact size of 1.7×1.6 mm2. The conversion gain of −14±1dB and the minimum image...
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