Title :
Stepped hairpin shape defected ground structure (SH-DGS) study
Author :
Dahlan, S.H. ; Aizam, S. ; Elfarizanis, Elfarizanis ; Shipun, A.H.
Author_Institution :
Fac. of Electr. & Electron. Eng., Univ. Tun Hussien Onn Malaysia, Batu Pahat
Abstract :
A new shape of defected ground structure (DGS) is introduced. The advantage over conventional dumb-bell shape DGS is, the physical dimensions and frequency response can be directly determined using its equivalent LC circuit. The equations can be extracted from Stepped Impedance Hairpin Resonator (SIHR) low pass filter study. They are similar in term of electrical characteristic. Conventional dumb-bell DGS use iterative trial and error method for the same purpose. It is time consuming and tend to lead to inaccurate design. This new DGS simplify and speed up design process significantly. Measurement and simulation data shows good relationship except at high frequency whereby the measured circuit suffers greater transmission loss. Higher dielectric constant material is suggested to reduce this effect.
Keywords :
cavity resonator filters; dielectric materials; equivalent circuits; frequency response; iterative methods; low-pass filters; permittivity; equivalent LC circuit; frequency response; higher dielectric constant material; iterative trial and error method; stepped hairpin shape defected ground structure; stepped impedance hairpin resonator low pass filter; transmission loss; Circuits; Dielectric loss measurement; Dielectric measurements; Equations; Frequency measurement; Frequency response; Impedance; Loss measurement; Low pass filters; Shape; Defected Ground Structure; Stepped Impedance Hairpin Resonator;
Conference_Titel :
Applied Electromagnetics, 2007. APACE 2007. Asia-Pacific Conference on
Conference_Location :
Melaka
Print_ISBN :
978-1-4244-1434-5
Electronic_ISBN :
978-1-4244-1435-2
DOI :
10.1109/APACE.2007.4603916
