Title :
A W-Band Power Amplifier Utilizing a Miniaturized Marchand Balun Combiner
Author :
Haikun Jia ; Baoyong Chi ; Lixue Kuang ; Zhihua Wang
Author_Institution :
Inst. of Microelectron., Tsinghua Univ., Beijing, China
Abstract :
A miniaturized Marchand balun combiner is proposed for a W-band power amplifier (PA). The proposed combiner reduces the electrical length of the transmission lines (transmission line) from about 80 ° to 30 °, when compared with a conventional Marchand balun combiner. Implemented in a 1-V 65-nm CMOS process, the presented PA achieves a measured saturated output power of 11.9 dBm and a peak power-added efficiency of 9.0% at 87 GHz. The total chip area (with pads) is 0.77×0.48 mm2, where the size of the balun combiner is only 0.36×0.13 mm2.
Keywords :
CMOS analogue integrated circuits; baluns; millimetre wave integrated circuits; millimetre wave power amplifiers; power combiners; transmission lines; CMOS process; PA; W-band power amplifier; efficiency 9.0 percent; electrical length reduction; frequency 87 GHz; miniaturized Marchand balun combiner; size 65 nm; transmission lines; voltage 1 V; Couplings; Impedance; Impedance matching; Power generation; Power transmission lines; Propagation losses; Transistors; Marchand balun; W-band; power amplifier (PA); power combiner;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2014.2387286
