Title :
Bandstop filters of suspended stripline design using the quasi-lumped element approach
Author :
Ho, Min-Hua ; Hsu, Wei-Hong
Author_Institution :
Grad. Inst. of Commun. Eng., Nat. Changhua Univ. of Educ., Changhua, Taiwan
Abstract :
In this paper, bandstop filters of suspended stripline are proposed. The filters are a ladder circuit structure which has the shunt-circuit modules in the series branches and the series-circuit ones in the ladder´s shunt arms. Each of these individual modules provides a transmission zero whose frequency can be independently tuned. Two bandstop filters are built from utilizing three and five of these zero-generating circuit modules, respectively. The rejection bandwidth is dominated by the distribution of the zeros. The quasi-lumped elements circuit model is developed to analyze the circuit performance and the experiments are conducted to verify the filters´ design.
Keywords :
band-stop filters; integrated circuit design; integrated circuit modelling; ladder filters; poles and zeros; strip line filters; bandstop filter; circuit performance; filter design; ladder circuit structure; quasilumped elements circuit model; rejection bandwidth; series branch; series-circuit; shunt-circuit module; suspended stripline design; transmission zero; zero-generating circuit module; Band pass filters; Filtering theory; Frequency measurement; Integrated circuit modeling; Microwave filters; Resonator filters; Transmission line measurements;
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