Title :
A Compact Dualband LNA Using Self-matched Capacitor
Author :
Yoo, Sang-Sun ; Yoo, Hyung-Joun
Author_Institution :
Inf. & Commun. Univ., Daejeon
Abstract :
A designed LNA can support the dualband; 2.3~2.5 GHz and 5.1~5.9 GHz. Switched inductor and switched capacitor is adopted for frequency selection. In switched inductor and capacitor matching network, the optimizing techniques to minimize the insertion loss are explained and self-matched capacitor is proposed for easy flexible impedance and noise matching in the various frequency bands. As using switched inductor and capacitor matching network, a designed LNA can support IEEE 802.11a/b/g in 2.4 GHz and 5.2 GHz. The performances of LNA are comparable with those of LNA for single standard due to self-matched capacitor and optimized switched inductor matching network. The dualband LNA is designed with small the size (0.5 mm2) by reducing the number of inductors.
Keywords :
UHF amplifiers; low noise amplifiers; microwave amplifiers; switched capacitor networks; wireless LAN; IEEE 802.11a/b/g; capacitor matching network; compact dualband LNA; frequency 2.3 GHz to 2.5 GHz; frequency 5.1 GHz to 5.9 GHz; insertion loss; noise matching; optimizing techniques; self-matched capacitor; switched capacitor; switched inductor; Active inductors; Communication switching; Dual band; Energy consumption; Frequency; Switched capacitor networks; Switches; Transceivers; Tunable circuits and devices; Wideband; Reconfigurable; auto-match; dual-band; flexible matching; multistandard; self; switched inductor;
Conference_Titel :
Radio-Frequency Integration Technology, 2007. RFIT 007. IEEE International Workshop on
Conference_Location :
Rasa Sentosa Resort
Print_ISBN :
978-1-4244-1307-2
Electronic_ISBN :
978-1-4244-1308-9
DOI :
10.1109/RFIT.2007.4443956