Title :
Design of a 20-to-40 GHz bandpass MMIC amplifier
Author :
Jia-Liang Chen ; Sheng-Fuh Chang ; Cherng-Cherng Liu ; Hsi-Wei Kuo
Author_Institution :
Dept. of Electr. Eng., Nat. Chung Cheng Univ., Taiwan
Abstract :
A millimeterwave bandpass MMIC amplifier, which integrates both features of gain amplifier and bandpass filter, is presented. A synthesis method for such amplifier is developed from the image-parameter filter theory. By employing the proposed bandpass amplifier in a receiver, the bulky of chip filter may not be required. An experimental chip fabricated by 0.1 /spl mu/m PHEMT shows 14.2dB gain from 20 to 40 GHz and 60-dB attenuation below 7 GHz and above 60 GHz. This confirms the proposed method and shows the feasibility of the function integration of gain amplifier with bandpass filter in the millimeterwave range.
Keywords :
HEMT integrated circuits; MMIC amplifiers; field effect MMIC; millimetre wave amplifiers; 0.1 micron; 14.2 dB; 20 to 40 GHz; PHEMT process; bandpass filter; gain amplifier; image parameter filter theory; millimeter-wave bandpass MMIC amplifier; synthesis method; Attenuation; Band pass filters; Broadband amplifiers; Circuit synthesis; Filtering theory; Low-noise amplifiers; MMICs; PHEMTs; Radio frequency; Radiofrequency amplifiers;
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.2003.1212602
