Dual-mode microstrip filters with adjustable transmission zeros
Küçük Resim Yok
Tarih
2008
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
INST ENGINEERING TECHNOLOGY-IET
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A new type of dual-mode microstrip square-loop resonator that produces asymmetrical frequency responses is proposed. The coupling between degenerate modes of the proposed dual-mode resonator is discussed depending on the perturbation size. The effect of non-orthogonal input/output feed lines located along a straight line on the frequency response is investigated using full-wave electromagnetic simulations. Two second-order bandpass filters using this type of dual-mode microstrip resonator are designed, fabricated and measured to demonstrate the dual-mode microstrip filters exhibiting transmission zero (TZ) shifting property. The one of the second-order filters produces a filter characteristic with two TZs in the upper stopband, whereas the other one has two TZs in the lower and upper stopbands. The shifting property of one of the TZs from one side of the passband to the other side is realised by only changing the perturbation size. The fourth-order filters of this type are also investigated. Both simulated and measured results are presented.
Açıklama
Asia Pacific Microwave Conference -- DEC 11-14, 2007 -- Bangkok, THAILAND
Anahtar Kelimeler
Kaynak
IET MICROWAVES ANTENNAS & PROPAGATION
WoS Q Değeri
Q3
Scopus Q Değeri
Q2
Cilt
2
Sayı
8
