Highly efficient CMOS RF linear power amplifier for WLAN = 고효율 WLAN 용 CMOS RF 선형 전력 증폭기

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A highly efficient CMOS linear power amplifier (PA) for IEEE WLAN 802.11 b/g/n/ac application is presented. To achieve high linear output power and high efficiency, a large signal MGTR linearization method is proposed with a modified envelope injection common source gate bias circuit. A novel inter-stage matching transformer which functions as a power splitter is designed to implement this method. Moreover, to enhance linearity in CMOS power amplifier, adaptive power cell(APC) linearization method is proposed. Also, we proposed integrated bias circuits with reduced sensitivity to voltages. With proposed linearization schemes, we improved PA performances in terms of EVM, $IMD_3$, AM to PM, AM to AM and ACLR. Furthermore, a fully integrated WLAN/WPAN multi-mode front-end module(FEM) scheme is proposed. The FEM contains dual mode CMOS PA for WLAN and Blue-tooth/Wi-Fi direct and shared low noise amplifier(LNA). The proposed FEM includes integrated switches for mode change. The proposed scheme can reduce the chip size of FEM significantly with minimizing its performance degradation.
Advisors
Hong, Song-Cheolresearcher홍성철
Description
한국과학기술원 : 전기및전자공학과,
Publisher
한국과학기술원
Issue Date
2014
Identifier
586473/325007  / 020105185
Language
eng
Description

학위논문(박사) - 한국과학기술원 : 전기및전자공학과, 2014.2, [ ii, 100 p. ]

Keywords

Linear Power Amplifier; 고집적화; 무선광대역통신; 선형화 기술; 선형전력증폭기; Fully on a chip; Linearization technique; WLAN; CMOS

URI
http://hdl.handle.net/10203/196576
Link
http://library.kaist.ac.kr/search/detail/view.do?bibCtrlNo=586473&flag=dissertation
Appears in Collection
EE-Theses_Ph.D.(박사논문)
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