학술논문
A miniaturized dual-mode ring bandpass filter with a new perturbation
Document Type
Periodical
Author
Source
IEEE Transactions on Microwave Theory and Techniques IEEE Trans. Microwave Theory Techn. Microwave Theory and Techniques, IEEE Transactions on. 53(1):343-348 Jan, 2005
Subject
Language
ISSN
0018-9480
1557-9670
1557-9670
Abstract
A miniaturized dual-mode ring bandpass filter at 1.45 GHz with a bandwidth of 6% is demonstrated. The perturbation of the dual modes is realized by a pair of local ground defects. The miniaturization is achieved by loading the peripheral of the ring with the butterfly radial stub structure. A 41% loading factor has been achieved using this method. The simulated and measured results are in good agreement.