Improved technique for reflection performances in broadband variable gain low noise amplifiers

Kawashima, Munenari ; Nakagawa, Tadao ; Yamaguchi, Yo ; Araki, Katsuhiko (2005) Improved technique for reflection performances in broadband variable gain low noise amplifiers. In: Gallium Arsenide applications symposium. GAAS 2005, 3-7 ottobre 2005, Parigi.
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Abstract

We propose an improved technique for reflection performances in broadband variable gain low noise amplifiers that does not require preamplifiers and buffer amplifiers. This technique controls the feedback circuit and main amplifier simultaneously to obtain constant input and output impedance values. When the amplifier’s gain changed, the reflection performance remained good. Amplifiers ranging from 750 MHz to 6 GHz fabricated using this technique showed an |S22| of less than -10 dB, a |S11| of less than -8 dB, and a variable gain range of more than 33 dB @ 2 GHz. Compared with conventional techniques, the |S22| showed a 6 dB improvement, the |S11|showed a 3 dB improvement, and the variable gain range showed an 8 dB improvement.

Abstract
Tipologia del documento
Documento relativo ad un convegno o altro evento (Atto)
Autori
AutoreAffiliazioneORCID
Kawashima, Munenari
Nakagawa, Tadao
Yamaguchi, Yo
Araki, Katsuhiko
Settori scientifico-disciplinari
DOI
Data di deposito
15 Feb 2006
Ultima modifica
17 Feb 2016 14:20
URI

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