Adaptive Envelope Shaping for Low and Medium Power Amplifiers with Dynamic Supply
نویسندگان
چکیده
منابع مشابه
A Hysteretic Two-phase Supply Modulator for Envelope Tracking RF Power Amplifiers
In this paper a two-phase supply modulator suitable for envelope tracking power amplifier is presented. The designed supply modulator has the linear assisted switching architecture. Two-phase architecture is used in order to reduce the output switching ripples. The proposed architecture uses hysteretic control instead of pulse width modulation (PWM) which significantly reduces the circuit compl...
متن کاملPower Envelope Tracking for Mobile Power Amplifiers
This story has been happening as the demand for high-speed data increases and battery capacity has not matched advances with communications technology. It’s not the battery at fault but the technology needed to power the amplifier on the phone. For years, normal DC-DC converters managed the battery power flowing in the phone to different chips. This included the power amplifier (PA) for driving...
متن کاملIncremental Behavioral Modeling of Envelope-dependent Nonlinear Distortion in Dynamic Supply Power Amplifiers
This paper presents behavioral modeling of an envelope tracking (ET) power amplifier (PA) excited by an slewrate limited envelope. In order to relax the slew-rate requirements of current efficient envelope amplifiers (EA), we can drive the ET PA with a slower version of the signal’s envelope. However, the resulting amplified signal suffers from nonlinear distortion due to the time-variant gain ...
متن کاملdesign of an analog ram (aram)chip with 10-bit resolution and low-power for signal processing in 0/5m cmos process
برای پردازش سیگنال آنالوگ در شبکه های عصبی ، معمولا نیاز به یک واحد حافظه آنالوگ احساس میشود که بدون احتیاج به a/d وd/a بتواند بطور قابل انعطاف و مطمئن اطلاعات آنالوگ را در خود ذخیره کند. این واحد حافظه باید دارای دقت کافی ، سرعت بالا ، توان تلفاتی کم و سایز کوچک باشد و همچنین اطلاعات را برای زمان کافی در خود نگهدارد. برای پیاده سازی سیستمی که همه این قابلیتها را در خود داشته باشد، کوشش...
15 صفحه اولAn Efficient Supply Modulator for Linear Wideband Rf Power Amplifiers
An Efficient Supply Modulator for Linear Wideband RF Power Amplifiers. (August 2011) Richard Turkson, B.Sc., Kwame Nkrumah University of Science and Technology Chair of Advisory Committee: Dr. Jose Silva-Martinez Radio Frequency (RF) Power Amplifiers are responsible for a considerable amount of the power consumption in the entire transmitter-receiver (transceiver) of modern communication system...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: IEEE Microwave and Wireless Components Letters
سال: 2016
ISSN: 1531-1309,1558-1764
DOI: 10.1109/lmwc.2016.2574825