3rd Iranian International Conference on Microelectronics

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عنوان انگلیسی A High-Performance CMOS Hybrid Envelope Tracking Power Amplifier Paper for Wideband High PAPR Applications
چکیده انگلیسی مقاله A high-performance CMOS hybrid Envelope Tracking circuit is designed to improve the average efficiency and linearity of an RF power amplifier driven by high PAPR signals. A class AB PA at 0.9 GHz and a dynamic power supply for variable envelope signals are designed and simulated with 180nm CMOS technology with 3.3V supply voltage. The dynamic power supply is a hybrid parallel structure that a switching class D amplifier supplies most of the required current and a class AB linear amplifier covers high bandwidth requirements and also eliminates output ripples of the switching amplifier. The Efficiency of the envelope modulator for 20 MHz LTE signal with 6 dB PAPR at 24 dBm output power is 65%. The average efficiency of proposed ET PA compared with fixed supply class AB PA for 20 MHz LTE signal at 6dB back-off power is increased from 19% to 37%. By prevention of falling the supply voltage below 1V, the EVM of ETPA is decreased from 12% to 7%.
کلیدواژه‌های انگلیسی مقاله Power Amplifier، Envelope Tracking، Peak to Average Power Ratio (PAPR)

نویسندگان مقاله | Mehrdad Karimi

| Mehdi Ehsanian

نشانی اینترنتی http://iicm2021.modares.ac.ir/browse.php?a_code=A-10-129-1&slc_lang=fa&sid=1
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