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The CMOS variable gain low noise amplifier (LNA) presented in this paper is designed for frequency band 4.2-4.8 GHz ultra-wideband (UWB) application specified in China. Wideband input matching with low noise performance co-design method is shown. A three-bit digital programmable gain control circuit is exploited to achieve variable gain. Fabricated with 0.13-μm RF CMOS process, the die size with ESD-pads...
In this paper, a fully integrated monocycle pulse based impulse radio ultra-wideband (IR-UWB) transmitter designed and fabricated with SMIC 0.13-μm RF CMOS technology is reported for UWB application specified in China. The monocycle pulse is generated and binary phase modulated by all-digital pulse generator and modulator with low power consumption. A driver amplifier is followed to filter and further...
A L-band gain controllable LNA with digital programmable gain controlling method is presented in this paper. A simple gain control circuit is exploited and added in the second stage of a cascade LNA to achieve gain tuning. Shunt-resistor feedback and noise cancelling technique are introduced in the first stage for excellent input match and low noise performance. Fabricated with 0.13-??m RF CMOS process,...
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