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Class-D amplifier

Intrinsic distortion of a fully differential BD modulated
Class D amplifier with analog feedback

Intrinsic distortion of a fully differential BD modulated Class D amplifier with analog feedback

... 2nd-order Class-D amplifier with binary PWM signal are also provided for ...AD-modulated Class-D amplifier has a much better performance, compared to BD ...

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High efficiency and low consumption underwater sonar transmitter with improved triple pulse HP PWM signal model based on class D amplifier

High efficiency and low consumption underwater sonar transmitter with improved triple pulse HP PWM signal model based on class D amplifier

... As is shown in Fig. 1, class D amplifier is basically com- posed of three parts. The first part is a modulator con- sisted of comparator and triangular wave generator. In the positive input of ...

5

Switching ripple reduction in a class D amplifier using a MOSFET in series with the filter capacitor

Switching ripple reduction in a class D amplifier using a MOSFET in series with the filter capacitor

... Firstly, the inductor ripple and corresponding voltage ripple for the specified class D amplifier need to be determined. This will be done for both an AC and a DC input signal. For both input ...

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Analysis of a hysteresis controlled self oscillating class D amplifier

Analysis of a hysteresis controlled self oscillating class D amplifier

... of class-D amplifier, as treated in this paper, obviates the need for a carrier wave (Green & Williams, 1992; Høyerby & Andersen, 2009; Lu & Gharpurey, 2011; Piessens & Steyaert, ...

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Ripple compensation for a class D amplifier

Ripple compensation for a class D amplifier

... a class-D amplifier with negative feedback. The amplifier converts a relatively low-frequency audio signal to a high-frequency train of rectangular pulses whose widths are slowly modulated ...

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A third order class D amplifier with and without ripple compensation

A third order class D amplifier with and without ripple compensation

... of class-D amplifier (with, respectively, one or two integrators in the feedback path) [8, 9, 10, 11, 12] and we have illustrated the ripple compensation (RC) technique in the first-order case [10], ...

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Implementation of a digital Class   D amplifier controller in CλaSH

Implementation of a digital Class D amplifier controller in CλaSH

... The research begins with introducing a Class - D amplifier system and how the system performance can be improved by the means of digital control. The system was analyzed by formulating the system in ...

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Class D amplifier power stage with PWM feedback loop

Class D amplifier power stage with PWM feedback loop

... PWM Class-D amplifiers (CDAs). PSR of the audio amplifier has always been a key parameter in mobile phone ...to Class AB amplifiers, the poor PSR performance has always been the major drawback ...

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Optimized Current-Mode Class-D RF Power Amplifier for Software Defined Radio

Optimized Current-Mode Class-D RF Power Amplifier for Software Defined Radio

... VMCD amplifier has some ...conventional Class-D PA is that it requires the use of a PMOS device, which has higher on- resistance than its NMOS ...Current-Mode class-D amplifier ...

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A High Competence Class AB CMOS Power Amplifier for Wireless Applications

A High Competence Class AB CMOS Power Amplifier for Wireless Applications

... This paper presents the design of a wideband class AB cascode Power Amplifier (PA) using UMC 0.18μm CMOS process for UWB applications covering lower band of 3-5 GHz. Designed class AB PA delivers an ...

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High efficiency CMOSs class E power amplifiers in gigahertz frequencies 
		using advanced semiconductor process: A review

High efficiency CMOSs class E power amplifiers in gigahertz frequencies using advanced semiconductor process: A review

... CMOS class-E power amplifier in Gigahertz frequencies range for wireless applications has been ...CMOS class-E PA can obtain the highest PAE about 67 % ...designing class-E PA, however the ...

9

Light Fidelity (Li-Fi) prototype with Raspberry Pi

Light Fidelity (Li-Fi) prototype with Raspberry Pi

... The receiver is probably the most complex aspect of the system and the most critical to get right. With transmitted light, the received levels are very small and susceptible to noise, capacitance and amplifier ...

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Designing an Efficient Rail-to-Rail Class ab Amplifier as Buffer in Lcd

Designing an Efficient Rail-to-Rail Class ab Amplifier as Buffer in Lcd

... ...(15) Where “V is the injection induced error on the storage capacitor to reduce the center the transconductance of the main transconductance amplifier is designed to be higher than auxiliary transconductance ...

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Using LDMOS Transistor in Class F Power Amplifier For WCDMA Applications

Using LDMOS Transistor in Class F Power Amplifier For WCDMA Applications

... F amplifier for WCDMA applications is proved via simulation, by achieving an efficiency of ...employing Class F amplifiers for improving efficiency without corrupting linearity is rather new, and there has ...

5

Analysis of Broadband GaN
 Switch Mode Class-E Power Amplifier

Analysis of Broadband GaN Switch Mode Class-E Power Amplifier

... single harmonic to give the optimum termination for that operation. For class-E only a single transistor and a simple output network is required. This makes it a first choice for broadband designs. In all ...

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Design of High Voltage Integrated Class F Amplifier for Ultra Sound Transducers

Design of High Voltage Integrated Class F Amplifier for Ultra Sound Transducers

... Abstract— Pulsers are usually adopted in ultra sound applications due to their efficiency. On the other hand, amplifiers would enable apodization profiles with high resolution; beams with low harmonic content and ...

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High Efficiency Class F Power Amplifier Design for GSM System

High Efficiency Class F Power Amplifier Design for GSM System

... The Class-F PA has been designed in this work by using ADS software for GSM ...base-station. Class-F is a represent of class B ...power amplifier such as DC simulation, bias point selection, ...

5

A Class E Power Amplifier with Coupling Coils for a Wireless Power Transfer System

A Class E Power Amplifier with Coupling Coils for a Wireless Power Transfer System

... A class E amplifier is used as the general circuit topology of a power transmitter in a WPT system on the HF bands because it can obtain high output power and theoretically 100% power added efficiency (PAE) ...

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Nano Scale Low Power Chopper Amplifier using Cascode and Miller Compensation Nutrilization in 45 nm CMOS

Nano Scale Low Power Chopper Amplifier using Cascode and Miller Compensation Nutrilization in 45 nm CMOS

... chopper amplifier is illustrated in adjoining ...the amplifier, ...the amplifier is just modulated once and shifted to the odd harmonics of the chopping ...chopper Amplifier consumes large ...

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A Current Bleeding CMOS Mixer Featuring LO Amplification Based on Current Reused Topology

A Current Bleeding CMOS Mixer Featuring LO Amplification Based on Current Reused Topology

... a class-A amplifier (referred as Amp thereafter), is implemented as the bleeding sources to amplify the LO ...the class-A amplifier bleeding source is employed to replace the traditional ...

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