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Design of Passive Components in Quadruple Sub-harmonic Image Rejection Mixer

Author(s): Bin Kong | Xi Luo | Yuanchuan Guo | Wei Zhao | Ruimin Xu

Journal: Research Journal of Applied Sciences, Engineering and Technology
ISSN 2040-7459

Volume: 6;
Issue: 21;
Start page: 4081;
Date: 2013;
Original page

Keywords: Double-balun | insertion loss | lange coupler | magnitude imbalance degree | phase imbalance degree

The design of passive components in quadruple Sub-harmonic image rejection mixer is presented in this study. The passive components include double-balun and Lange coupler. With the help of ADS, a Balun with magnitude imbalance degree less than 0.2 dB and phase imbalance degree less than 1° is achieved in the range of 7.9 9.5 GHz. The insertion loss is about 7.3 dB at the center frequency of 8.7 GHz. A Lange coupler with magnitude imbalance degree in the range less than 0.3 dB and phase imbalance degree less than 1° is realized over the 30~40 GHz measurement band. The insertion loss is about 3.25 dB at the center frequency of 35 GHz. Satisfactory results have been reached in the simulation of double-balun and Lange coupler, which makes a significant foundation to the realization of the monolithic quadruple Sub-harmonic image rejection mixer.
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