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A CMOS Complex Filter with a New Automatic Tuning Method for PHS Application  

Ko, Dong-Hyun (Department of Electronic Engineering, Konkuk University)
Park, Do-Jin (Department of Electronic Engineering, Konkuk University)
Jung, Sung-Kyu (Department of Electronic Engineering, Konkuk University)
Pu, Young-Gun (Department of Electronic Engineering, Konkuk University)
Lee, Kang-Yoon (Department of Electronic Engineering, Konkuk University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.44, no.10, 2007 , pp. 17-22 More about this Journal
Abstract
This paper presents a baseband complex bandpass filter for PHS applications with a new automatic tuning method. The full-CMOS PHS transceiver is implemented by adopting the Low-IF architecture to overcome the DCoffset problems. To meet the Adjacent Channel Selectivity (ACS) performance, the 3rd-order Chebyshev complex bandpass filter is designed as the baseband channel-select filter. The new corner frequency tuning method is proposed to compensate the process variation. This method can reduce the noise level due to MOS switches. The filter was fabricated using a 0.35{\mu}m$ CMOS process, and the power consumption is 12mW.
Keywords
PHS; complex filter; Low-IF; bandpass; corner frequency; tuning;
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