High-Fidelity and High-Efficiency Digital Class-D Audio Power Amplifier

High Efficiency Class-F Power Amplifier Design

Due to the high increase in and demand for a wide assortment of applications that require low-cost, high-efficiency, and compact systems, RF power amplifiers are considered the most critical design blocks and power consuming components in wireless communication, TV transmission, radar, and RF heating. Therefore, much research has been carried out in order to improve the performance of power amp...

Design of High Efficiency Broadband Adjusted Class AB Power Amplifier

A 13W Current Mode Class D High Efficiency 1 GHz Power Amplifier

13 watt Current Mode Class-D (CMCD) with 60% efficiency is presented. This amplifier is the highest power switch mode microwave power amplifier reported to date. The CMCD architecture is an improvement over the Voltage Mode Class-D in that the parasitic reactance in the active device can be absorbed into the tank circuit resulting in a zero voltage switching condition.

High Power Switching Audio Power Amplifier with symmetrical topology and digital control

A new symmetrical topology switching power amplifier is introduced for professional audio use. The amplifier is composed by a pair of semi soft switched half-bridges with independent feedback control. Whole overall layout looks very similar than an already bridge configured stereo amplifier with few exceptions. Although the complexity of the proposed topology is at least twice of the convention...

Pulse Width Modulation for Class D Audio Power Amplifier with 85% of Efficiency

In this paper a high efficiency PWM CMOS audio power amplifier is proposed. The original idea is based on the difference close-loop feedback technique and the difference pre-amp. Thus, we conceive a rail to rail comparator with a constant gm. This rail-to-rail PWM comparator with hysteresis architecture has been embedded in the audio power amplifier. The simulation results based on the TSMC 0.1...