Title :
Design of a 1.8 V high frequency CMOS variable gain amplifier with a novel dB-linear gain structure
Author :
Hu, Wei ; Song, Seunghyun ; Choi, Bongryul ; Kim, Jae-Whui
Author_Institution :
Syst. LSI, Samsung Electron., Gyeonggi, South Korea
Abstract :
In this paper, a novel dB-linear gain structure is introduced. Based on this structure, a high frequency and high dynamic range variable gain amplifier (VGA) is presented. The VGA circuit is designed for a satellite receiver application, operating from 950 MHz to 2.15 GHz. Simulation results were achieved using 0.18 μm CMOS technology, and shown a good dB-linear control characteristic with dynamic gain range of 85 dB.
Keywords :
CMOS integrated circuits; UHF amplifiers; UHF integrated circuits; artificial satellites; circuit simulation; integrated circuit design; radio receivers; space vehicle electronics; 0.18 micron; 1.8 V; 85 dB; 950 MHz to 2.15 GHz; CMOS technology; amplifier circuit design; circuit simulation; high dynamic range variable gain amplifier; high frequency CMOS variable gain amplifier; linear control; linear gain structure; satellite receiver application; CMOS technology; Circuits; Dynamic range; Equations; Frequency; Gain; Resistors; Satellites; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 2004. MWSCAS '04. The 2004 47th Midwest Symposium on
Print_ISBN :
0-7803-8346-X
DOI :
10.1109/MWSCAS.2004.1353913
