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A concurrent multiband InGaP-GaAs HBT LNA for 1.8/1.9-GHz GSM, 2.4/4.9/5.2/5.7-GHz WLAN, and 5–7-GHz ultra-wideband (UWB) system applications

✍ Scribed by Yo-Sheng Lin; Kun-Nan Liao

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
202 KB
Volume
48
Category
Article
ISSN
0895-2477

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✦ Synopsis

A temperature-insensitive (Ϫ25°C-175°C) monolithic concurrent multiband low-noise amplifier (LNA) for 1.8/1.9-GHz GSM, 2.4/4.9/5.2/5.7-GHz WLAN, and 5-7-GHz ultra-wideband (UWB) system applications is realized using a low-cost 2-m InGaP-GaAs HBT technology. The first stage of the LNA provides high gain and input matching simultaneously at the 1.8/1.9-GHz GSM, 2.4/4.9/5.2/5.7-GHz WLAN, and 5-7-GHz UWB bands. The output matching of the second stage was realized by using shunt-shunt feedback. It consumes only 9-mW power and achieves transducer gains (

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