Title :
A low voltage, low power linear pseudo differential OTA for ultra-high frequency applications
Author :
Kavala, Anil ; Kondekar, P.N. ; Sun, Yang
Author_Institution :
Sch. of Eng., Inf. & Commun. Univ., Daejeon
Abstract :
This paper presents a 1.2 V pseudo differential, symmetric CMOS operational transconductance amplifier (OTA) by using linearity improvement method for ultra-high frequency (UHF) OTA-C filters. Simulation results show a unity gain bandwidth of 1.2 GHz and a transconductance of 2.15 mS with a good linearity of 7 dBm. The power consumption of the proposed OTA is 1.1 mW. The proposed OTA is used to design a 9th order 400 MHz chebyshev I low-pass filter by using 0.13 mum technology. This filter has an attenuation of 30 dB at 600 MHz and it consumes only 13 mW.
Keywords :
CMOS integrated circuits; Chebyshev filters; differential amplifiers; operational amplifiers; bandwidth 1.2 GHz; bandwidth 400 MHz; bandwidth 600 MHz; chebyshev low-pass filter; linearity improvement method; low power linear pseudo differential OTA; power 1.1 mW; size 0.13 mum; symmetric CMOS operational transconductance amplifier; ultra-high frequency OTA-C filters; voltage 1.2 V; Attenuation; Bandwidth; Differential amplifiers; Energy consumption; Frequency; Linearity; Low pass filters; Low voltage; Operational amplifiers; Transconductance;
Conference_Titel :
Antenna Technology, 2009. iWAT 2009. IEEE International Workshop on
Conference_Location :
Santa Monica, CA
Print_ISBN :
978-1-4244-4395-6
Electronic_ISBN :
978-1-4244-4396-3
DOI :
10.1109/IWAT.2009.4906929
