A Low-noise Uwb Cmos Mixer Using Current Bleeding and Resonant Inductor Techniques
نویسندگان
چکیده
This article presents a direct down-conversion mixer for ultra-wideband systems on 0.18 m RF CMOS process. The proposed mixer uses a current bleeding technique and an internal resonant inductor to improve the conversion gain and noise figure of the conventional Gilbert-cell mixer. Effects of each technique are compared on mixer’s noise performance. Measured results show the conversion gain of 7.5– 10.1 dB and the double side-band noise figure of 8.8 –12.5 dB at Band 1 (3.168–3.696 GHz) and the gain of 1.4 to 1.6 dB and the double side-band noise figure of 12.2–17.6 dB at Band 13 (9.768– 10.296 GHz). The circuit operates at the supply voltage of 1.8 V and dissipates 13.24 mW. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 1595–1597, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22559
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