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Design of a CMOS LNA with an integrated on‐chip filter for DVB‐S applications
Author(s) -
Yang ChinLung
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24355
Subject(s) - cmos , electronic engineering , cascode , electrical engineering , digital video broadcasting , noise figure , engineering , stopband , low noise amplifier , amplifier , microwave , topology (electrical circuits) , band pass filter , telecommunications
A low noise amplifier (LNA) and a lumped‐element Chebychev‐type bandpass filter (BPF) co‐design, intended for using in digital video broadcasting satellite (DVB‐S), which were fabricated in the TSMC 0.18 μm CMOS technology is presented. The two‐stage LNA is constructed based on the source‐degenerated cascode topology for its superior noise performance and reverse isolation. Moreover, a miniaturized BPF with one transmission zero is connected to the output of the LNA that helps to improve the rejection level in the lower stopband. Experiment results demonstrated a good out‐band suppressed below 60 dB at 7.2 GHz, a maximum power gain of 12 dB, a minimum NF of 4.78 dB, and an IIP3 of −1 dBm while drawing 9.4 mA from a 1.8 V supply. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 1580–1584, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24355