A wideband variable gain differential CMOS LNA for multi-standard wireless LAN

Author

Hao, Zhang ; Zhiqun, Li ; Zhigong, Wang

Author_Institution

Inst. of RF- & OE- ICs, Southeast Univ., Nanjing

Volume

3

fYear

2008

fDate

21-24 April 2008

Firstpage

1334

Lastpage

1337

Abstract

This paper describes a wideband variable gain LNA for multi-standard wireless LAN operating in the frequency bands of 4.9-5.825 GHz, including three standards: IEEE 802.11a, ETSI HiperLAN2 and MMAC HiSWANa. By using a simple feedback loop at the second stage of LNA we realized the continuous gain control. A variable gain range of 18.7 dB (0.7 dB to 19.4 dB) is achieved. The noise figure is 1.1 dB at the maximum gain and the input 1-dB compression point is -3.5 dBm at the minimum gain, while the DC power consumption is 12.6 mW under a 1.8 V supply voltage.

Keywords

CMOS integrated circuits; MMIC amplifiers; differential amplifiers; field effect MMIC; low noise amplifiers; wideband amplifiers; wireless LAN; DC power consumption; IEEE 802.11a; compression point; frequency 4.9 GHz to 5.825 GHz; multistandard wireless LAN; variable gain range; wideband variable gain differential CMOS LNA; Circuit synthesis; Energy consumption; Feedback loop; Frequency; Gain control; Noise figure; Switches; Topology; Wideband; Wireless LAN; 802.11a; HiSWAN; HiperLAN2; LNA; multi-standard; variable gain; wideband;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave and Millimeter Wave Technology, 2008. ICMMT 2008. International Conference on

Conference_Location

Nanjing

Print_ISBN

978-1-4244-1879-4

Electronic_ISBN

978-1-4244-1880-0

Type

conf

DOI

10.1109/ICMMT.2008.4540685

Filename

4540685