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A Wideband LNA and High-Q Bandpass Filter for Subsampling Direct Conversion Receivers  

Park, Jeong-Min (Department of Electronics Eng., Ewha Womans University)
Yun, Ji-Sook (Department of Electronics Eng., Ewha Womans University)
Seo, Mi-Kyung (Department of Electronics Eng., Ewha Womans University)
Han, Jung-Won (Department of Electronics Eng., Ewha Womans University)
Choi, Boo-Young (Department of Electronics Eng., Ewha Womans University)
Park, Sung-Min (Department of Electronics Eng., Ewha Womans University)
Publication Information
Journal of the Institute of Electronics Engineers of Korea SD / v.45, no.11, 2008 , pp. 89-94 More about this Journal
Abstract
In this paper, a cascade of a wideband amplifier and a high-Q bandpass filter (BPF) has been realized in a 0.18mm CMOS technology for the applications of subsampling direct-conversion receivers. The wideband amplifier is designed to obtain the -3dB bandwidth of 5.4GHz, and the high-Q BPF is designed to select a 2.4GHz RF signal for the Bluetooth specifications. The measured results demonstrate 18.8dB power gain at 2.34GHz with 31MHz bandwidth, corresponding to the quality factor of 75. Also, it shows the noise figure (NF) of 8.6dB, and the broadband input matching (S11) of less than -12dB within the bandwidth. The whole chip dissipates 64.8mW from a single 1.8V supply and occupies the area of $1.0{\times}1.0mm2$.
Keywords
Bandpass filter; Q-factor; wideband amplifier; subsampling; direct-conversion;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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