Title :
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
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;
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
DOI :
10.1109/WICOM.2009.5303221
