Title :
Miniaturized microwave tunable bandpass filters on high-k LTCC
Author :
Mi, Xiaoyu ; Kawano, Yoichi ; Toyoda, Osamu ; Suzuki, Toshihide ; Ueda, Satoshi ; Hirose, Tatsuya ; Joshin, Kazukiyo
Author_Institution :
Fujitsu Ltd., Akashi, Japan
Abstract :
This paper describes a MEMS tunable bandpass filter, which operates at the K band and features a low insertion loss of -2.79-3.58 dB, a small size of 2.9 mm by 1.5 mm and a wide continuous tuning range of 32%. The tunable filter is based on MEMS-varactors-loaded microstrip resonators and has been directly constructed on a high-k low-temperature-co-fired-ceramics (LTCC) wiring wafer using MEMS-on-LTCC technology. The developed tunable filter was combined with a 90-nm CMOS-based broadband power amplifier to demonstrate a frequency tunable power amplifier module. This tunable power amplifier technique is a first step toward future reconfigurable radio front-end modules up to K-band.
Keywords :
CMOS integrated circuits; MMIC power amplifiers; band-pass filters; circuit tuning; field effect MMIC; micromechanical devices; microstrip resonators; microwave filters; resonator filters; software radio; varactors; wideband amplifiers; CMOS-based broadband power amplifier; K band; MEMS tunable bandpass filter; MEMS-on-LTCC technology; MEMS-varactor-loaded microstrip resonators; frequency tunable power amplifier module technique; high-k LTCC; high-k low-temperature-co-fired-ceramic wiring wafer; loss -2.79 dB to 3.58 dB; low insertion loss; miniaturized microwave tunable bandpass filters; reconfigurable radio front-end modules; size 90 nm; Band pass filters; Micromechanical devices; Microstrip filters; Microstrip resonators; Microwave filters; Power amplifiers; Resonator filters; CMOS; High-k; LTCC; MEMS; Tunable filter; power amplifiers; radio front-end; reconfigurable radio;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2010 Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-1-4244-7590-2
Electronic_ISBN :
978-1-902339-22-2
