National Taiwan University Dept Elect EngnLu, Liang-HungLiang-HungLuHsieh, Hsieh-HungHsieh-HungHsiehWang, Yu-ShunYu-ShunWang2006-11-142018-07-062006-11-142018-07-062005-10http://ntur.lib.ntu.edu.tw//handle/246246/200611150121756This letter presents a fully integrated 2.4/5.2-GHz dual-band low-noise amplifier (LNA) for WLAN applications. By switching the input transconductance and the output capacitance, the narrow-band gain and impedance matching are achieved at the 2.4-GHz and the 5.2-GHz frequency bands. Using a standard 0.18- m CMOS process, a compact dual-band LNA with a chip size comparable to a single-band one is realized in the proposed topology for a minimum hardware cost. The fabricated circuit exhibits gains of 10.1 dB and 10.9 dB, and noise figures of 2.9 dB and 3.7 dB at the two frequency bands, respectively.application/pdf340846 bytesapplication/pdfzh-TWCascode amplifierCMOS RF, dual-bandimpedance matchinglow-noise amplifier (LNA)multimodesource degenerationjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/200611150121756/1/2551.pdf