Wu, C.-R.C.-R.WuHsieh, H.-H.H.-H.HsiehLai, L.-S.L.-S.LaiLIANG-HUNG LU2020-06-112020-06-11200815311309https://scholars.lib.ntu.edu.tw/handle/123456789/498203https://www.scopus.com/inward/record.uri?eid=2-s2.0-52049120819&doi=10.1109%2fLMWC.2008.2002491&partnerID=40&md5=68a24badf97ba03dcb143fd721b4a475In this letter, a fully integrated receiver frontend which is composed of a low-noise amplifier and a down-conversion mixer is presented for multiband applications. Different from conventional concurrent or switched-type architectures, the proposed circuit uses varactors for the frequency tuning. In addition, broadband techniques are also employed to maximize the operating frequency range and to enhance the circuit performance. Using a standard 0.18 μm CMOS technology, a 3-5 GHz receiver frontend is implemented for demonstration. With a LO power of 3 dBm and an IF frequency of 10 MHz, the circuit exhibits a conversion gain of 22.2 ± 2.4 dB while the IIP3 and noise figure are better than -6 dBm and 17 dB, respectively, within the entire frequency range. Operated at a supply voltage of 2 V, the receiver consumes a dc power of 16 mW. © 2008 IEEE.Band selection; CMOS radio frequency (RF); Down-conversion mixer; Frequency tuning; Low-noise amplifier (LNA); Multistandard; Receiver frontend[SDGs]SDG7Audio frequency amplifiers; CMOS integrated circuits; Integrated circuit layout; Mixing; Standards; Band selection; Circuit performances; CMOS radio frequency (RF); CMOS technologies; Conversion gains; Dc power; Down-conversion mixer; Down-conversion mixers; Frequency ranging; Frequency tuning; Fully integrated; GHz frequencies; If frequency; Low-noise amplifier (LNA); Low-noise amplifiers; Multi band application; Multistandard; Operating frequencies; Receiver front ends; Receiver frontend; Supply voltages; Amplifiers (electronic)journal article10.1109/LMWC.2008.20024912-s2.0-52049120819WOS:000259371700024