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Conference Paper
Highly Linear Envelope Tracking Power Amplifier with Simple Correction Circuit
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- Authors
- Kyunghoon Moon, Jooseung Kim, Sangsu Jin, Byungjoon Park, Yunsung Cho, Min Park, Bumman Kim
- Issue Date
- 2015-05
- Citation
- Radio Frequency Integrated Circuits (RFIC) Symposium 2015, pp.127-130
- Publisher
- IEEE
- Language
- English
- Type
- Conference Paper
- Abstract
- In this paper, we propose an envelope tracking (ET) power amplifier (PA) with a simple correction circuit (SCC) for linear operation. The supply dependent AM-AM and AM-PM distortion of an ET PA is linearized by the SCC which is fabricated on chip. The PA and supply modulator are fabricated using I/O device of CMOS 40nm process. For the 9.35-dB peak-to-average-power ratio, 256-QAM IEEE 802.11ah signal, the ET PA delivers a power-added efficiency of 24%, an average output power of 19.4 dBm and an error vector magnitude of -30 dB.
- KSP Keywords
- 256-QAM, AM-AM, AM-PM, ET PA, Envelope Tracking Power Amplifier, Highly linear, I/O devices, IEEE 802.11ah, Output power, Peak to average Power ratio(PAPR), Power added efficiency(PAE)