Title :
Coplanar MMIC active bandpass filters using negative resistance circuits
Author :
Hopf, Bernd P. ; Wolff, Ingo ; Guglielmi, Marco
Author_Institution :
Inst. fuer Mobil- und Satellitenfunktech., Kamp-Lintfort, Germany
fDate :
12/1/1994 12:00:00 AM
Abstract :
Several active bandpass filters for 1.8 and 5.5 GHz have been developed with the coplanar line technique using negative resistance circuits. For example, a first-order active bandpass filter at 5.5 GHz and two second-order bandpass filters at 1.8 GHz are presented, where one of the 1.8 GHz filters is a fixed center frequency filter and the other a tunable one. These 1.8 GHz filters have a 3 dB bandwidth of 110 MHz. The tuning range of the center frequency is 200 MHz
Keywords :
UHF filters; UHF integrated circuits; active filters; active networks; band-pass filters; circuit tuning; field effect MMIC; microwave filters; negative resistance devices; 1.8 GHz; 110 MHz; 5.5 GHz; MMIC active bandpass filters; coplanar line technique; negative resistance circuits; tuning range; Active filters; Active inductors; Band pass filters; Circuit simulation; FETs; Feedback circuits; Frequency; MMICs; Microwave filters; Passive filters;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
