Abstract
A novel compact dual-mode circular-patch bandpass filter (BPF) with improved stopband performance is presented. A pair of square etched areas acting as a perturbation element on the circular-patch resonator is used in the proposed structure, so that the two split modes are coupled and the filter structure can be reduced. An open stub is attached at the input/output port in order to improve the stopband performance of the proposed BPF. The proposed BPF is demonstrated with a central frequency f0 = 2.17 GHz, insertion loss of −2 dB, a 3-dB bandwidth of 8%, and a rejection of −35 dB at the 2nd harmonic. The measured results of experimental filter show good agreement with the theoretical simulated results. © 2005 Wiley Periodicals, Inc. Microwave Opt Technol Lett 47: 203–206, 2005; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.21123
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
