Title :
Lossy filter with uniform Q-factors by optimization method
Author :
Qiu, Liang-Feng ; Wu, Lin-Sheng ; Yin, Wen-Yan ; Mao, Jun-Fa
Author_Institution :
Key Laboratory of Ministry of Education of Design and Electromagnetic Compatibility of High-Speed Electronic Systems, Shanghai Jiao Tong University, 200240, China
Abstract :
A negative resistive coupling coefficient between two resonators can be realized by a resistor in series with a phase inverter. Therefore, the calculation of g-factors of a lossy coupling matrix should be modified. In order to synthesize lossy filters with uniform g-factors, an optimization method is proposed for generalized specifications, where the hyperbolic rotation angles are regarded as the optimization argument. Our method has been verified by numerical examples with various frequency responses.
Keywords :
Couplings; Decision support systems; High-speed optical techniques; Laboratories; Manganese; Optical filters; Loss redistribution; lossy filter; optimization; uniform g-factor;
Conference_Titel :
Microwave Conference (APMC), 2014 Asia-Pacific
