Electrical engineering

Physics

Geology

Power-added efficiency

Transistor

Power dividers and directional couplers

CMOS

Resonator

Harmonic

Oceanography

Engineering

High-electron-mobility transistor

Voltage

Harmonics

Amplifier

Power (physics)

Acoustics

Materials science

RF power amplifier

Substrate (aquarium)

Quantum mechanics

Optoelectronics

Hybrid coupler

International Journal of RF and Microwave Computer-Aided Engineering

A novel balanced power amplifier (BPA) using compact coupler with rhombus resonators is presented. In this design, a new method is presented to analyze the proposed rhombus-shaped resonator based on the LC equivalent circuit. A new class F power amplifier is designed to improve performances of the BPA. The results show that the performance of the proposed BPA is improved by using the proposed harmonic suppressed coupler at the design structure. The designed BPA operates at 1.25 GHz and delivers 29 dB output power with a gain of 17.9 dB and drain efficiency (DE) of 65.2%. The presented BPA is realized using ATF-34143 transistors in GaAs pHEMT technology and fabricated on the RT/Duroid 5880 substrate with a thickness of 31 mil.

<scp>High‐efficiency</scp> balanced power amplifier using miniaturized harmonics suppressed coupler

High‐efficiency balanced power amplifier using miniaturized harmonics suppressed coupler