Title :
Characteristics and design formulas of a microstrip stub-loaded multi-mode ring resonator
Author :
Ma, Zhewang ; Ohira, Masataka ; Hotaka, Takuya ; Chen, Chun-Ping ; Anada, Tetsuo ; Kobayashi, Yoshio
Author_Institution :
Grad. Sch. of Sci. & Eng., Saitama Univ., Saitama, Japan
Abstract :
In this paper, the characteristics of a microstrip tab-coupled stub-loaded ring resonator are investigated, and design formulas for determining the 3dB bandwidth, passband reflection zeros, and transmission zeros of the resonator are derived based on the even- and odd-mode analysis of the equivalent circuit of the resonator. Design examples are provided which reveal that with appropriate choices of the ring resonator parameters, up to four modes can be observed in the passband of the resonator. This property can be exploited in the design of circuits using this type of resonators, with the expectation of significant improvements in the circuit performances.
Keywords :
equivalent circuits; microstrip circuits; microstrip resonators; network synthesis; equivalent circuit; even-mode analysis; microstrip stub-loaded multimode ring resonator design; microstrip tab-coupled stub-loaded ring resonator; odd-mode analysis; passband reflection zero; passband transmission zero; Filtering theory; Impedance; Microstrip resonators; Optical ring resonators; Passband; Reflection; 3dB bandwidth; Microstrip line; multi-mode resonator; ring resonator; tab-coupling; transmission zero;
Conference_Titel :
Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4577-0625-7
Electronic_ISBN :
978-7-308-08555-7
