题目/Title：A W-Band Power Amplifier Utilizing a Miniaturized Marchand Balun Combiner

作者/Author：贾海昆,池保勇,况立雪,王志华
                        Haikun Jia,Baoyong Chi,Lixue Kuang,Zhihua Wang

期刊/Journal：IEEE Transactions on Microwave Theory and Techniques

年份/Issue Date：2015Feb.

卷（期）及页码/Volume（No.）&pages：Vol.63, No.2, pp. 719 - 725

摘要/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 degrees, 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 (PAE) of 9.0% at 87 GHz. The total chip area (with pads) is 0.77x0.48 mm2, where the size of the balun combiner is only 0.36x0.13 mm2.