Title :
A 77GHz CMOS medium power amplifier with transmission line transformers for multi-mode automotive radar system
Author :
Juntaek Oh ; Bonhyun Ku ; Songcheol Hong
Author_Institution :
Dept. of Electr. Eng., KAIST, Daejeon, South Korea
Abstract :
A 77 GHz CMOS medium power amplifier (PA) with high efficient matching networks based on transformer is presented. The unit transistor size of a power cell is selected by analyzing its maximum available gain. The broadside-coupled Transmission-Line Transformers (TLTs) are implemented as matching networks for low insertion loss and wide band matching characteristics. The PA is fabricated using a 65-nm RF CMOS process. The saturated output power and the peak power-added efficiency at 76.5GHz is 12.8 dBm and 8%, respectively. The DC power consumption is 236 mW with a supply voltage of 2.0V.
Keywords :
CMOS analogue integrated circuits; coupled transmission lines; field effect MIMIC; low-power electronics; millimetre wave power amplifiers; road vehicle radar; CMOS medium power amplifier; DC power consumption; RF CMOS process; broadside-coupled transmission-line transformers; frequency 77 GHz; matching networks; multimode automotive radar system; power 236 mW; power cell; size 65 nm; transmission line transformers; unit transistor size; voltage 2.0 V; wide band matching characteristics; Automotive engineering; CMOS integrated circuits; Circuit faults; Power amplifiers; Power generation; Radar; Transistors; 77GHz; CMOS; W-band; automotive radar; power amplifier; transformer;
Conference_Titel :
Microwave Conference Proceedings (APMC), 2013 Asia-Pacific
Conference_Location :
Seoul
DOI :
10.1109/APMC.2013.6694925
