Title :
Digitally controlled wideband CMOS variable gain amplifier
Author :
Park, Bonghyuk ; Lee, Seungsik ; Kim, Jaeyoung ; Choi, Sangsung
Author_Institution :
Electron. & Telecommun. Res. Inst., Taejeon, South Korea
Abstract :
A variable gain amplifier is designed for wideband system. The VGA is implemented in a 0.18 μm CMOS process. The gain of the VGA is controlled digitally in dB using proposed a R ladder with switch and decoder. It operates at an IF frequency of 250 MHz and dynamic range is 27 dB.
Keywords :
CMOS digital integrated circuits; automatic gain control; decoding; digital control; intermediate-frequency amplifiers; wideband amplifiers; 0.18 micron; 250 MHz; IF frequency; R ladder; VGA; complementary metal-oxide-semiconductor; digitally controlled amplifier; switch-decoder; wideband CMOS variable gain amplifier; Broadband amplifiers; Decoding; Digital control; Dynamic range; Gain; Home automation; MOS devices; Radio frequency; Resistors; Switches;
Conference_Titel :
Advanced Communication Technology, 2005, ICACT 2005. The 7th International Conference on
DOI :
10.1109/ICACT.2005.246097
