High Efficiency Class-BD Power Amplifier Stabilized for Power Supply Voltage Fluctuations

High-Efficiency Power Amplifier Using Dynamic Power-Supply Voltage for CDMA Applications

Efficiency and linearity of the microwave power amplifier are critical elements for mobile communication systems. This paper discusses improvements in system efficiency that are obtainable when a dc–dc converter is used to convert available battery voltage to an optimal supply voltage for the output RF amplifier. A boost dc–dc converter with an operating frequency of 10 MHz is demonstrated usin...

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...

A Class E Power Amplifier with Low Voltage Stress

A new output structure for class E power amplifier (PA) is proposed in this paper. A series LC resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. This resonator causes low impedance at the second harmonic. The output circuit is designed to shape the switch voltage of the class E amplifier and lower the voltage stress of the transistor. T...

a class e power amplifier with low voltage stress

a new output structure for class e power amplifier (pa) is proposed in this paper. a series lc resonator circuit, tuned near the second harmonic of the operating frequency is added to the output circuit. this resonator causes low impedance at the second harmonic. the output circuit is designed to shape the switch voltage of the class e amplifier and lower the voltage stress of the transistor. t...

Design of High Efficiency Broadband Adjusted Class AB Power Amplifier