Power Amplifiers
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 amplifiers is proposed. The modulator has fewer numbers of external R and C elements and simpler architecture in comparison ...
9
Analysis of distortion in pulse modulation converters for switching radio frequency power amplifiers
... efficient, power efficient, broadband and ...linear power amplifiers; however the efficiency is very ...mode power amplifiers (SMPAs), such as class E amplifiers, are known to be ...
22
An Accurate Complexity-Reduced Simplified Volterra Series for RF Power Amplifiers
... Abstract—An accurate complexity-reduced simplified Volterra (ACR-SV) series is introduced for RF power amplifiers (PAs). Based on the conventional simplified Volterra (SV) series, it takes memoryless ...
10
On the Minimization of Power Consumption in Base Stations using on/off Power Amplifiers
... total power consumption of a BS and enlightens the way to minimize ...the power consumed at every different component of the ...BS’s power amplifiers, we show how to decide whether it is ...
6
Enhancing Power Efficiency of Doherty Power Amplifiers Using Windowing Based Crest Factor Reduction Technique
... Average Power Ratio ...for Power Amplifiers (PAs) designers, who have either to conceive new PA configurations or to resurrect and optimize old PA architectures to set up novel ways to maximize the ...
12
Adaptive Quasi PID Control Method for Switching Power Amplifiers
... switching power amplifiers ...linear power amplifiers (LPAs) and so can fulfill the requirements of some high-accuracy applications, such as protective relay ...
27
A Modified Generalized Memory Polynomial Model for RF Power Amplifiers
... Abstract—A modified generalized memory polynomial model (MGMP) is proposed for RF power amplifiers (PAs). The MGMP model is derived by applying complexity-reduced technique to the generalized memory ...
6
The design of a new power combining technique for the RF power amplifiers
... The increasing market for wireless communication systems has compelled more and more research to focus on radio-frequency integrated circuits (RFIC) design. Power amplifiers (PA) are one of the most ...
239
Electromagnetic Modeling for the Optimized Design of Spatial Power Amplifiers with Hard Horn Feeds
... The power combining takes place in free space or inside a low-loss overmoded waveguide without the need for power splitters or di- viders as in corporate power combiners and hence the losses in the ...
181
Continuous Classes of Power Amplifiers
... RF Power Amplifier (PA) is ...low power digital ...high power PA in mainstream CMOS. There are many classes of power amplifiers, a PA class with theoretically a very high efficiency is ...
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Adaptive digital polynomial predistortion linearisation for RF power amplifiers
... the power amplifier (PA) is often the largest contributor to spectral inefficiency through the increase in out-of-band signal ...of power amplifiers used in radio applications has been understood for ...
144
Digital Control in Tube Power Amplifiers
... for power amplifiers (audio speaker drivers, radio transmitters, and ...a power amplifier is to provide a fixed level of gain to a processed signal and deliver power into a load such as a ...
62
A Flexible Dual-Inflection Point RF Predistortion Linearizer for Microwave Power Amplifiers
... Abstract—This paper presents a very flexible and generic design of a diode-based RF predistortion linearizer that can correct for the dual- inflection point type compression characteristics found in the gain profile of ...
18
Adaptive digital predistortion linearisation for RF power amplifiers
... [2]. Power amplifiers (PAs) can be linearised somewhat by operating in the lin- ear ...output power levels and efficiency, they are often driven nearer the saturation ...ing power efficiency) ...
5
Reliability Study of GaN-on-SiC HEMT RF Power Amplifiers
... RF power amplifiers including packaged HEMT devices assembled on PCB boards and exposed to power cycling (PC) and thermal cycling (TC) and to evaluate prospective thermal management methods including ...
9
GaN or GaAs, TWT or Klystron - Testing High Power Amplifiers for RADAR Signals using Peak Power Meters
... state power amplifiers (SSPA) started making modest inroads as an alternative technology for certain RADAR ...output power, ruggedness and ...output power capability. High power GaAs ...
8
Linearization of RF Power Amplifiers
... The rest of the thesis represents a summary of the work I performed in the area of cartesian feedback. In chapter 3, I detail the methods used to carefully characterize two RF power amplifiers. These ...
195
Spectral Analysis of Polynomial Nonlinearity with Applications to RF Power Amplifiers
... Power amplifiers (PAs) are important components of com- munications systems and are inherently nonlinear. For Ex- ample, the so-called class AB PAs, which are moderately non- linear, are typically employed ...
10
Load pull methodology to characterise class-E outphasing power amplifiers
... output power is ...non-linear amplifiers at saturation, irrespective of the output ...class-E amplifiers, can be used to amplify the constant envelope signals without distorting the signal ...class-E ...
18
RF Power Amplifiers. The definition of the efficiency can be represented in an equation form as:
... high-powered amplifiers should normally consist of the T type, rather than the PI ...powered amplifiers sometimes result in unrealistic component values when matching for the higher operating frequencies ...
20