Towards high frequency switched-current filters in CMOS and GaAs technology

Author

Battersby, N.C. ; Toumazou, C.

Author_Institution

Dept. of Electr. & Electron. Eng., Imperial Coll., London, UK

fYear

1993

fDate

3-6 May 1993

Firstpage

1239

Abstract

The switched-current technique is a relatively new analog sampled-data signal processing technique which aims at replacing switched capacitors by offering superior digital process compatibility and the potential for higher operating frequencies. The high frequency potential of switched-currents is explored by showing an integrated fifth-order bilinear elliptic filter, operating at a maximum clock frequency of 5.75 MHz, and the first implementation of switched currents in GaAs MESFET technology, with a simulated clock frequency of 1 GHz

Keywords

CMOS analogue integrated circuits; MESFET integrated circuits; UHF filters; VHF filters; analogue processing circuits; elliptic filters; field effect analogue integrated circuits; gallium arsenide; radiofrequency filters; switched current circuits; switched filters; 1 GHz; 5.75 MHz; CMOS; GaAs; HF SI filters; MESFET technology; RF filters; analog sampled-data signal processing; digital process compatibility; fifth-order bilinear elliptic filter; high frequency; switched-current filters; CMOS process; CMOS technology; Capacitors; Clocks; Digital signal processing; Filters; Frequency; Gallium arsenide; Switching circuits; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on

Conference_Location

Chicago, IL

Print_ISBN

0-7803-1281-3

Type

conf

DOI

10.1109/ISCAS.1993.393953

Filename

393953