Title :
Design of Compact Low-pass Filter with With Wide Rejection Band Using Cascaded Arrowhead-DGS and Multilayer-Technique
Author :
Boutejdar, Ahmed ; Omar, Abbas ; Batmanov, Anatoliy ; Burte, Edmund
Author_Institution :
Dept. of Microwave & Commun. Eng., Univ. of Magdeburg, Magdeburg
Abstract :
In this paper a compact low-pass filter (LPF) composed on arrowhead-DGS slots has been proposed and implemented. Triangle-shaped slot is investigated and adapted to tighten the coupling of arrowheads in order to minimize the size of a structure and improve a LPF performance. The measured insertion loss is less than 0.8 dB throughout the pass band from DC up to 3 GHz. Only three cells of the proposed structure are required for a wide stop-band with more than - 20 dB stop-band rejection from 4.0 GHz up to 14.0 GHz. The equivalent circuit model has been studied to investigate the filter structure and compared with a full-wave EM simulation. Measured results show that the new design provides good performance by suppressing ripples and enlarges the stop-band.
Keywords :
low-pass filters; microstrip filters; transmission lines; cascaded arrowhead-DGS; compact low-pass filter; insertion loss; multilayer technique; Band pass filters; Capacitance; Circuit simulation; Cutoff frequency; Equivalent circuits; Inductance; Low pass filters; Microstrip; Microwave filters; Resonant frequency; Arrowhead DGS; Cascaded Method; DGS; Low-Pass Filter (LPF); Microstrip Filter;
Conference_Titel :
Microwave Conference, 2009 German
Conference_Location :
Munich
Print_ISBN :
978-3-9812668-0-1
Electronic_ISBN :
978-3-8007-3150-3
DOI :
10.1109/GEMIC.2009.4815903
