Switched-Capacitor RF Power Amplifiers: A Review of Efficiency and Linearity Considerations

被引：0
|
作者：
Ginzberg, Nimrod [1 ]
Cohen, Emanuel [1 ]
机构：
[1] Technion Israel Inst Technol, Fac Elect Engn, Haifa, Israel
来源：
2018 IEEE INTERNATIONAL CONFERENCE ON THE SCIENCE OF ELECTRICAL ENGINEERING IN ISRAEL (ICSEE) | 2018年
关键词：
SCPA; CMOS; polar transmitter; quadrature transmitter; I/Q combining; shared I/Q; switched-capacitor power amplifier; high-Z;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
This paper reviews the recent advancements in the realization of all-digital switched-capacitor power amplifiers (SCPA), and proposes a method for comparison between the different transmitter (Tx) architectures based on circuit level simulations and Matlab signal processing using actual Wi-Fi 802.11ac OFDM signals. The SCPA topologies and I/Q combining approaches are analysed in view of their power-added efficiency (PAE), linearity and implementation complexity. The analysis method shows that I/Q combining techniques can have comparable PAE performance to polar architectures per error vector magnitude (EVM) levels, while requiring lower phase synchronization bandwidth and implementation effort.
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页数：5
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