Title :
A stepped impedance comb-line filter fabricated by using ceramic lamination technique
Author :
Ishizaki, T. ; Uwano, T.
Author_Institution :
Mater. & Devices Lab., Matsushita Electr. Ind. Co. Ltd., Kadoma, Japan
Abstract :
A filter named as a stepped impedance comb-line filter is proposed. The parallel stripline sections of stepped impedance resonators are coupled electromagnetically to form an attenuation pole. The design procedure for a two-pole planar filter is derived from an analysis using the even and odd-mode impedances. The experimental filters were constructed by ceramic lamination technique and they exhibited performances suitable for portable telephones.<>
Keywords :
ceramics; cordless telephone systems; laminations; microwave filters; mobile radio systems; passive filters; radiotelephony; strip line components; attenuation pole; ceramic lamination technique; even-mode impedances; odd-mode impedances; parallel stripline sections; portable telephones; stepped impedance comb-line filter; stepped impedance resonators; two-pole planar filter; Attenuation; Ceramics; Electromagnetic coupling; Impedance; Lamination; Resonator filters; Stripline; Telephony;
Conference_Titel :
Microwave Symposium Digest, 1994., IEEE MTT-S International
Conference_Location :
San Diego, CA, USA
Print_ISBN :
0-7803-1778-5
DOI :
10.1109/MWSYM.1994.335498
