Title :
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
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;
Conference_Titel :
Circuits and Systems, 1993., ISCAS '93, 1993 IEEE International Symposium on
Conference_Location :
Chicago, IL
Print_ISBN :
0-7803-1281-3
DOI :
10.1109/ISCAS.1993.393953
