Title :
DMS harmonic termination load network for high efficiency power amplifier applications
Author :
Chaudhary, Girdhari ; Jeong, Yongchae ; Lim, Jongsik ; Kim, Chul Dong ; Kim, Dongsu ; Kim, Jun-Chul ; Park, Jong-Chul
Author_Institution :
Dept. of Inf. & Commun. Eng., Chonbuk Nat. Univ., Jeonju, South Korea
Abstract :
In this paper, a harmonic termination load network using a defected microstrip structure (DMS) for a high efficiency power amplifier is proposed and compared with a dumb-bell shaped defected ground structure (DGS) harmonic termination load network. The proposed structure is designed for a wideband code division multiple access (WCMDA) down-link applications operating at frequency of 2.11~2.17 GHz. From the experiment, the attenuation of the DMS for the harmonic frequency (4.22~6.51 GHz) is more than 27 dB. Comparing the defected area, the DMS occupies a quarter of the DGS defected area. The DMS has caused less electromagnetic interference (EMI) noise than the DGS due to no defected area in a ground plane. The ground problem of DGS can be overcome by using DMS.
Keywords :
code division multiple access; electromagnetic interference; power amplifiers; DGS harmonic termination load network; DMS harmonic termination load network; EMI noise; WCMDA down-link application; defected microstrip structure; dumb-bell shaped defected ground structure; electromagnetic interference; harmonic frequency; high efficiency power amplifier; wideband code division multiple access; Attenuation; Delay; Harmonic analysis; Microstrip; Microwave filters; Power amplifiers; Power harmonic filters; Defected microstrip structure (DMS); defected ground structure (DGS); power amplifier;
Conference_Titel :
Microwave Conference (EuMC), 2010 European
Conference_Location :
Paris
Print_ISBN :
978-1-4244-7232-1
