Title: Laminated printing circuit board containing filter
Application Number: 200510134499 Application Date: 2005.12.15
Publication Number: 1984529 Publication Date: 2007.06.20
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: H05K1/16;H05K1/02;H01F17/00;H03H7/01;H03H7/06
Applicant(s) Name: Industrial Technology Co., Ltd. Address:
Inventor(s) Name: Chen Changsheng;Zhuo Weiming;Lai Yingjun;Xu Qinsha
Attorney & Agent: lianghui xujin guo
Abstract:
    The invention uses multi layer PCB made of composite material composed of high dielectric material and low dielectric material. In said multi layer PCB there are multi serial/or parallel capacitors to form a filter; wherein, at least one of serial capacitors is set as the interdigitated capacitor of the third metal layer on the low dielectric layer; the both ends of said interdigitated capacitor respectively have multi coupling teeth. The electrodes of the interdigitated capacitor all are located in same panel, and the sizes of the metal electrodes of the interdigitated capacitor can be pre-adjusted in order to control the central frequency and transmission loss of the filter.
Time: 8
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