Broadband operation of saturated amplifier with high efficiency

Author

Bumman Kim ; Junghwan Son ; Seunghoon Jee ; Seokhyeon Kim ; Sangsu Jin

Author_Institution

Dept. of Electr. Eng., Pohang Univ. of Sci. & Technol., Pohang, South Korea

fYear

2014

fDate

6-6 June 2014

Firstpage

1

Lastpage

4

Abstract

A saturated operation of a power amplifier with the proper harmonic tuning can be highly efficient. The harmonics, mainly the second harmonic, are generated internally by the saturation operation. Matching tolerance for the harmonic tuning is very large and can be operated across a broadband with a high efficiency. Based on the saturated amplifier, we have realized a broadband amplifier using GaN device. Across the 1.75-2.17 GHz band, the output power, drain efficiency, and gain are between 51.0-52.3 dBm, 71.0-84.4%, and 8.22-11.6 dB, respectively.

Keywords

III-V semiconductors; UHF power amplifiers; circuit tuning; gallium compounds; harmonic generation; impedance matching; wide band gap semiconductors; wideband amplifiers; GaN; broadband operation; broadband power amplifier; drain efficiency; frequency 1.75 GHz to 2.17 GHz; gain 51.0 dB to 52.3 dB; harmonic tuning; impedance matching circuit tolerance; saturated amplifier; saturation operation; second harmonic generation; Bandwidth; Broadband amplifiers; Harmonic analysis; Impedance; Impedance matching; Power amplifiers; Broadband; Efficiency; GaN; Harmonic Tuning; Power Amplifier; Saturated Amplifier;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless and Microwave Technology Conference (WAMICON), 2014 IEEE 15th Annual

Conference_Location

Tampa, FL

Type

conf

DOI

10.1109/WAMICON.2014.6857770

Filename

6857770