Title :
A CMOS linear-in-dB high-linearity variable-gain amplifier for UWB receivers
Author :
Fu, Chan Tat ; Luong, Howard
Author_Institution :
Hong Kong Univ. of Sci. & Technol., Kowloon
Abstract :
This paper presents a CMOS linear-in-dB variable gain amplifier (VGA) that provides a variable gain range over 90 dB with 3 dB bandwidth greater than 400 MHz at 54 dB gain. The maximum output 1 dB compression point is 9 dBm. Maximum gain error is +/-2 dB. It consumes total 22 mW with 1.8 V supply, including control circuit. This VGA is fabricated in TSMC 0.18 um CMOS process and demonstrate the performance of the proposed dB-linear VGA.
Keywords :
CMOS integrated circuits; amplifiers; radio receivers; ultra wideband communication; CMOS integrated circuit; TSMC; UWB receivers; control circuit; gain 54 dB; linear-in-dB variable-gain amplifier; power 22 mW; size 0.18 mum; voltage 1.8 V; CMOS technology; Capacitance; Circuits; Degradation; Differential amplifiers; Dynamic range; Frequency response; Gain control; Linearity; Voltage; UWB; VGA; linear in dB characteristics;
Conference_Titel :
Solid-State Circuits Conference, 2007. ASSCC '07. IEEE Asian
Conference_Location :
Jeju
Print_ISBN :
978-1-4244-1359-1
Electronic_ISBN :
978-1-4244-1360-7
DOI :
10.1109/ASSCC.2007.4425742
