A Method for Performance Improvement of RF Power Amplifier by Using Defected Ground Structure

Author

Chen, Zhuowei ; You, Bin

Author_Institution

Inst. of CAD, Hangzhou Dianzi Univ., Hangzhou, China

fYear

2009

fDate

24-26 Sept. 2009

Firstpage

1

Lastpage

4

Abstract

Conventional methods for improving output power and efficiency for RF power amplifiers would results the complex circuit and difficulty design. This problems will be solved when the defected ground structure (DGS) used in power amplifiers. The 50 Omega microstrip line with DGS used in output matching network can suppress the second and third harmonic components. In this paper the effects of DGS on the output power and efficiency of a class AB power amplifier would be simulated and realized at 2.4 GHz. The measured performance show that the DGS improve efficiency of power amplifier by 2-3%.

Keywords

UHF amplifiers; harmonics suppression; microstrip lines; power amplifiers; RF power amplifier; class AB power amplifier; defected ground structure; efficiency 2 percent to 3 percent; frequency 2.4 GHz; harmonics suppression; microstrip line; output matching network; resistance 50 ohm; second harmonic components; third harmonic components; Etching; Impedance matching; Microstrip; Power amplifiers; Power generation; Power system harmonics; Radio frequency; Radiofrequency amplifiers; Resonance; Shape;

fLanguage

English

Publisher

ieee

Conference_Titel

Wireless Communications, Networking and Mobile Computing, 2009. WiCom '09. 5th International Conference on

Conference_Location

Beijing

Print_ISBN

978-1-4244-3692-7

Electronic_ISBN

978-1-4244-3693-4

Type

conf

DOI

10.1109/WICOM.2009.5303221

Filename

5303221