DESIGN OPTIMIZATION AND TESTING OF A GAAS SWITCHED-CAPACITOR FILTER

被引:9
|
作者
HAIGH, DG
TOUMAZOU, C
HARROLD, SJ
STEPTOE, K
SEWELL, JI
BAYRUNS, R
机构
[1] UNIV LONDON IMPERIAL COLL SCI & TECHNOL,DEPT ELECT ENGN,LONDON SW7 2BT,ENGLAND
[2] UNIV MANCHESTER,INST SCI & TECHNOL,DEPT ELECT ENGN & ELECTR,MANCHESTER M60 1QD,LANCS,ENGLAND
[3] CADENCE DESIGN SYST UK LTD,MAIDENHEAD,BERKS,ENGLAND
[4] UNIV GLASGOW,DEPT ELECTR & ELECT ENGN,GLASGOW G12 8QQ,SCOTLAND
[5] ANADIGICS CORP,RF & DIGITAL PROD DEV,WARREN,NJ
来源
关键词
D O I
10.1109/31.85625
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
This paper is concerned with the design of high frequency switched-capacitor filters implemented using GaAs MESFET technology. The design techniques developed are illustrated by means of a 2nd-order switched-capacitor bandpass filter designed to operate at a switching frequency of 500 MHz. The design incorporates a recently proposed operational amplifier architecture with a simulated gain of 60 dB and a recently proposed switch driver circuit. Amplifiers are characterized in terms of settling time performance and a general procedure is presented for optimization of the switched-capacitor circuit to maximize switching frequency. Measurements on a fabricated chip confirm the design of the filter and its components.
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页码:825 / 837
页数:13
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