DocumentCode
3252082
Title
An MMIC low-distortion variable-gain amplifier using active feedback
Author
Nishikawa, Kiisa ; Tokumitsu, T.
Author_Institution
NTT Wireless Syst. Labs., Kanagawa, Japan
fYear
1995
fDate
16-20 May 1995
Firstpage
1619
Abstract
A new low-distortion variable-gain amplifier (VGA) is proposed and analyzed. The gain of the VGA is controlled using the transconductance of a common-drain FET (CDF) in the negative feedback path. The analysis and prototype results indicate that the third-order intermodulation-distortion ratio is greatly improved at a high input power levels due to the CDF´s unilateral characteristic and a reduction in the VGA´s input impedance.<>
Keywords
MMIC amplifiers; feedback amplifiers; field effect MMIC; gain control; intermodulation distortion; MMIC amplifier; active feedback; common-drain FET; intermodulation-distortion; low-distortion amplifier; negative feedback path; third-order IMD ratio; transconductance; variable-gain amplifier; Degradation; Equivalent circuits; FETs; Impedance; Laboratories; Linearity; MMICs; Negative feedback; Prototypes; Transconductance;
fLanguage
English
Publisher
ieee
Conference_Titel
Microwave Symposium Digest, 1995., IEEE MTT-S International
Conference_Location
Orlando, FL, USA
ISSN
0149-645X
Print_ISBN
0-7803-2581-8
Type
conf
DOI
10.1109/MWSYM.1995.406286
Filename
406286
Link To Document