Title :
A New Transformation of Bandpass Filter to Bandstop Filter Using Multilayer-Technique and U-Defected Ground Structure (DGS)
Author :
Boutejdar, A. ; Batmanov, Anatoliy ; Machac, Jan ; Burte, Edmund ; Omar, Abass
Author_Institution :
Dept. of Microwave & Commun. Eng., Univ. of Magdeburg, Magdeburg
Abstract :
A novel compact microstrip bandpass/Bandstop filters realized by combining new Multilayer Method with electrically coupled microstrip U-shaped DGS resonators, is proposed. The proposed filters have low insertion loss and are compact in size due to the slow-wave effect. They also have sharp transition regions due to the presence of two- transmission zeros on both sides of their passband. The measured center frequency, bandwidth and insertion loss are 3.4 GHz, 40%, and 0.5 dB respectively. The simulated and measured results show good agreement and validate the proposed approach.
Keywords :
band-pass filters; band-stop filters; microstrip filters; microstrip resonators; multilayers; U-defected ground structure; insertion loss; microstrip U-shaped resonators; microstrip bandpass filter; microstrip bandstop filter; multilayer method; slow-wave effect; Band pass filters; Couplings; Filtering theory; Frequency measurement; Insertion loss; Microstrip filters; Microstrip resonators; Nonhomogeneous media; Passband; Resonator filters; BPF; BSF; DGS; Microstrip slots; Suspended layer;
Conference_Titel :
Microwave Techniques, 2008. COMITE 2008. 14th Conference on
Conference_Location :
Prague
Print_ISBN :
978-1-4244-2137-4
Electronic_ISBN :
978-1-4244-2138-1
DOI :
10.1109/COMITE.2008.4569919
