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J Electromagn Eng Sci > Volume 7(4); 2007 > Article
Journal of the Korean Institute of Electromagnetic and Science 2007;7(4):154-160.
DOI: https://doi.org/10.5515/JKIEES.2007.7.4.154   
Reconfigurable Multi-Band Mixer for SDR System
Jeong-Pyo Kim, Jae-Hoon Choi
Department of Electrical and Computer Engineering, Hanyang University
Abstract
A reconfigurable multi-band mixer for the SDR system is proposed. The proposed reconfigurable mixer is operated between $850;MHz{sim}2;GHz$, which includes all commercial mobile communication service. Because the varactor diodes are used to select a specific frequency and to adjust the impedance characteristic of the selected frequency band, the proposed reconfigurable mixer can be achieved to similar performance across all of the tuning range. In addition, the designed reconfigurable mixer is applicable for the SDR system since it has a single signal path for the multi-band signals and wide band tuning range.
Key words: Reconfigurable, SDR, Multi-Band, Cascode FET, Mixer

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