Title :
K-band MMIC active band-pass filters
Author :
Kang-Wei Fan ; Ching-Chih Weng ; Zou-Min Tsai ; Huei Wang ; Shyh-Kang Jeng
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
Two K-band active band-pass filters using 0.15-μm GaAs pHEMT technology, with one fixed-frequency and the other tunable, are designed, fabricated, and tested. The fixed-frequency filter has its central frequency at 22.6 GHz, with 900-MHz bandwidth (4%). The tunable filter can be tuned from 19.5 to 21.5 GHz with the same bandwidth. Both circuits have a common size of 1 mm × 1 mm. To our knowledge, the tunable filter is the highest frequency tunable active filter ever reported.
Keywords :
HEMT integrated circuits; III-V semiconductors; active filters; band-pass filters; circuit tuning; field effect MMIC; gallium arsenide; microwave filters; 0.15 micron; 19.5 to 21.5 GHz; 22.6 GHz; 900 MHz; GaAs; K-band MMIC filters; active band-pass filters; design; fabrication; fixed-frequency filter; pHEMT technology; testing; tunable filter; Active filters; Band pass filters; Bandwidth; Circuit testing; Frequency; Gallium arsenide; K-band; MMICs; PHEMTs; Tunable circuits and devices; Active band-pass filter; K-band; pHEMT;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2004.840961
