On the Design of Class-J Microwave Power Amplifier

Design of a Class F Power Amplifier

A Class F power amplifier (PA) at 2.5GHz has been designed and fabricated. Test results show 15.7 dB gain with 75.75% power added efficiency (PAE ), at an input level of 25 dBm. The design procedure is presented, with various issues illustrated and addressed. A new method is proposed to obtain the optimum load and source impedances without iterations, which would usually be necessary.

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 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...

Analysis and Simulation of Memory Effects on Microwave Power Amplifier

Analysis and simulation the existence of electrical memory effects and thermal memory effects in different spacing two-tone input signal and modulated signal source through advanced design system (ADS) software simulation, respectively. Built thermal memory effects compensation circuit in the ADS environment to confirm the compensation circuit has a good compensation to the thermal memory effec...