Title:
電気フィルタ構造
Document Type and Number:
Japanese Patent JP7076540
Kind Code:
B2
Abstract:
An electrical filter structure for forwarding an electrical signal from a first port to a second port in a frequency selective manner, wherein the filter is an edge-coupled filter, the filter comprising: a plurality of coupled line sections coupled in a series, comprising at least a first coupled line section and a last coupled line section; wherein the first port is connected with the first of the coupled line sections using a first transmission line; wherein the second port is connected with the last of the coupled line sections using a second transmission line; wherein the electrical filter comprises an open stub; wherein a length of the open stub is chosen such that an electrical length of the open stub is equal, within a tolerance of +/−20 percent, to a fourth of a wavelength of a signal having a frequency of twice a passband center frequency of the filter.
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Inventors:
Vianti, Giovanni
Application Number:
JP2020521430A
Publication Date:
May 27, 2022
Filing Date:
August 06, 2019
Export Citation:
Assignee:
Advantest Corporation
International Classes:
H01P1/212; H01P7/00
Domestic Patent References:
| JP2006186828A | ||||
| JP2007251264A | ||||
| JP2016063321A | ||||
| JP2005175803A | ||||
| JP2005117433A | ||||
| JP58141005A |
Foreign References:
| US5589440 | ||||
| US5442330 |
Other References:
和田 光司,タップ結合共振器の適用によるλ/2結合線路形BPFの特性改善,電子情報通信学会2002年総合大会講演論文集 エレクトロニクス1 PROCEEDINGS OF THE 2002 IEICE GENERAL CONFERENCE,日本,社団法人 電子情報通信学会,2002年,p.91
Attorney, Agent or Firm:
Longhua International Patent Service Corporation