Title :
Design of Microstrip Dual-Mode Filters Based on Source-Load Coupling
Author :
Zhang, Xiao-Chuan ; Yu, Zhi-Yuan ; Xu, Jun
Author_Institution :
Inst. of Appl. Phys., Univ. of Electron. Sci. & Technol. of China, Chengdu
Abstract :
In this letter, a novel circular open-loop resonator is presented. The field patterns of this type of dual-mode resonator are investigated using full-wave electromagnetic simulations. The applications of the dual-mode resonator as bandpass filters are proposed. A coupling and routing scheme is presented to model the operations of these filters. Advantages of using this type of filter are not only its low insertion loss, but also its controllable transmission zeros. Both simulated and measured results are presented.
Keywords :
band-pass filters; microstrip filters; resonator filters; bandpass filters; circular open-loop resonator; controllable transmission zeros; coupling scheme; dual-mode resonator; field patterns; full-wave electromagnetic simulations; low insertion loss; microstrip dual-mode filters design; routing scheme; source-load coupling; Band pass filters; Couplings; Electromagnetic fields; Electromagnetic measurements; Filtering theory; Insertion loss; Microstrip filters; Propagation losses; Resonator filters; Routing; Bandpass filters; dual-mode resonator; transmission zero;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2008.2003461
