发明授权
- 专利标题: Reflection-type bandpass filter
- 专利标题(中): 反射式带通滤波器
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申请号: US11867440申请日: 2007-10-04
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公开(公告)号: US07855621B2公开(公告)日: 2010-12-21
- 发明人: Ning Guan
- 申请人: Ning Guan
- 申请人地址: JP Tokyo
- 专利权人: Fujikura Ltd.
- 当前专利权人: Fujikura Ltd.
- 当前专利权人地址: JP Tokyo
- 代理机构: Sughrue Mion, PLLC
- 优先权: JP2006-274322 20061005; JP2006-321596 20061129
- 主分类号: H01P1/203
- IPC分类号: H01P1/203
摘要:
A reflection-type bandpass filter for ultra-wideband (UWB) radio data communications is provided. The reflection-type bandpass filter includes a substrate formed by laminating a conducting layer and a dielectric layer, and a microstrip line made of a conductor of a non-uniform width and provided on the dielectric layer. The width distribution of the microstrip line in the lengthwise direction is set such that the absolute value of the difference in reflectivity at the frequency f in the regions f 10.6 GHz and the reflectivity in the region 3.7 GHz≦f≦10.0 GHz is not less than 10 dB, and the variation of the group delay in the region 3.7 GHz≦f≦10.0 GHz is between −0.2 and 0.2 ns.
公开/授权文献
- US20080106355A1 REFLECTION-TYPE BANDPASS FILTER 公开/授权日:2008-05-08