Title :
A 60 GHz-band coplanar MMIC active filter
Author :
Ito, M. ; Maruhashi, K. ; Kishimoto, S. ; Ohata, K.
Author_Institution :
NEC Corp., Shiga, Japan
Abstract :
This paper presents the design and performance of a 60 GHz-band coplanar active filter. To compensate the loss of a passive filter, a resonator composed of a quarter-wavelength line is terminated by a negative resistance circuit. A cross-coupling is introduced to make attenuation poles at both sides of the pass-band. A fabricated filter with two resonators shows an insertion loss of 3.0 dB with a rejection of greater than 20 dB at 3 GHz-separation from a center frequency of 65.0 GHz. The size of the filter is 2.5 mm /spl times/ 1.1 mm.
Keywords :
active filters; coplanar waveguide components; field effect MIMIC; field effect analogue integrated circuits; integrated circuit design; millimetre wave filters; negative resistance circuits; poles and zeros; resonator filters; 1.1 mm; 2.5 mm; 2.6 GHz; 3-dB bandwidth; 3.0 dB; 60 GHz-band coplanar MMIC active filter; 65.0 GHz; AlGaAs-InGaAs; AlGaAs/InGaAs heterojunction FET; attenuation poles; center frequency; cross-coupling; design; filter size; insertion loss; negative resistance circuit; passive filter loss compensation; performance; quarter-wavelength line resonator; rejection; Active filters; Attenuation; Circuits; Equations; Frequency; Insertion loss; MMICs; Microwave filters; Passive filters; Resonator filters;
Conference_Titel :
Microwave Symposium Digest, 2003 IEEE MTT-S International
Conference_Location :
Philadelphia, PA, USA
Print_ISBN :
0-7803-7695-1
DOI :
10.1109/MWSYM.2003.1210478
