@inproceedings{6714866918c04632a931e8041c3c2931,
title = "A multi-mode 60-GHz power amplifier with a novel power combination technique",
abstract = "This paper discusses two issues including a new power-combined technique and efficiency enhancement technique in mm-wave power amplifier design. A new concept of {"}folded-transformer{"} is proposed to reduce effectively the active area of power combiner and splitter. Furthermore, the efficiency enhancement technique at power-back operations is presented to extend the battery service time of the mobile device. The 60-GHz PA adopts an ultra-compact 4-way folded-transformer based architecture and provides power level-dependent multi-operating modes. To the best of the author's knowledge, this is the first mm-wave power amplifier with efficiency enhancement technique at power back-off operations. The PA is implemented in TSMC 90nm low-power CMOS process. While 1.2 V supply, the measurement results show that the peak power is 18.5 dBm at 60GHz and the drain efficiency of the power stage achieves of 24.1%. At 6dB/10dB power back-off operation, the drain efficiencies of power stage can be enhanced from 5.9% / 2.4% to 11.9% / 8%, respectively.",
keywords = "60-GHz, efficiency enhancement, folded transformer, mobile, power amplifiers",
author = "Yeh, {Jin Fu} and Tsai, {Jeng Han} and Huang, {Tian Wei}",
year = "2012",
doi = "10.1109/RFIC.2012.6242232",
language = "English",
isbn = "9781467304146",
series = "Digest of Papers - IEEE Radio Frequency Integrated Circuits Symposium",
pages = "61--64",
booktitle = "2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012 - Digest of Papers",
note = "2012 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2012 ; Conference date: 17-06-2012 Through 19-06-2012",
}