Title :
Tunable coplanar filter for F-band wireless receivers
Author :
Takahashi, Hiroyuki ; Kosugi, Toshihiko ; Hirata, Akihiko ; Murata, Koichi ; Nagatsuma, Tadao
Author_Institution :
NTT Corp., Atsugi
Abstract :
A tunable-filter for a 120-GHz-band receiver MMIC, which is used for a 10-Gbit/s wireless link, was designed and fabricated. The filter can change both the center frequency and bandwidth simultaneously. The filter is a Bessel-type filter and composed of three dual coplanar open stubs and variable-reactance circuits. The filter was monotonically fabricated with InP HEMTs on a single-chip, which occupies only 400 mum times 500 mum. We measured the tuning range of the filter. The center frequency can be adjusted from 118 to 122 GHz with the bandwidth of 15 GHz, and the 3-dB bandwidth can be adjusted from 11 to 16.5 GHz at the center frequency of 120 GHz.
Keywords :
MMIC; circuit tuning; high electron mobility transistors; microwave filters; millimetre wave filters; radio links; radio receivers; Bessel-type filter; F-band wireless receivers; HEMT; dual coplanar open stubs; frequency 11 GHz to 16.5 GHz; frequency 118 GHz to 122 GHz; receiver MMIC; tunable coplanar filter; variable-reactance circuits; wireless link; Bandwidth; Circuit optimization; Filters; Frequency; HEMTs; Indium phosphide; MMICs; MODFETs; Tunable circuits and devices; Tuning; 10 Gbit/s; F band; InP HEMT; MMIC; Tunable-filter; millimeter-wave;
Conference_Titel :
Microwave Conference, 2006. APMC 2006. Asia-Pacific
Conference_Location :
Yokohama
Print_ISBN :
978-4-902339-08-6
Electronic_ISBN :
978-4-902339-11-6
DOI :
10.1109/APMC.2006.4429369
