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Patent Searching and Data


Title:
FILTER DEVICE AND FILTER
Document Type and Number:
WIPO Patent Application WO/2018/221486
Kind Code:
A1
Abstract:
This filter device, provided with a filter and a waveguide, widens a frequency band in which the reflection loss is small. A filter device (1) is provided with: a filter (11) that includes broad walls (13, 14) and a narrow wall (16); and first and second waveguides (21, 31). The filter (11) is provided with first and second columnar conductors (pins 18, 19) that penetrate an opening (13a1 or 13a2) provided to a broad wall (conductor layer 13) and that have ends (181, 191) located inside a substrate (12). The first and second waveguides (21, 31) are arranged such that the first and second columnar conductors (pins 18, 19) penetrate openings (22a, 23a) and ends (182, 192) of the columnar conductors (pins 18, 19) are located inside the waveguides (21, 31).

Inventors:
UEMICHI YUSUKE (JP)
Application Number:
PCT/JP2018/020455
Publication Date:
December 06, 2018
Filing Date:
May 29, 2018
Export Citation:
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Assignee:
FUJIKURA LTD (JP)
International Classes:
H01P1/208; H01P3/12; H01P5/08
Foreign References:
JP2014179935A2014-09-25
JPH10135714A1998-05-22
JP2005102024A2005-04-14
JP6140872B12017-05-31
JP6190932B12017-08-30
JP2015080100A2015-04-23
JP2015226109A2015-12-14
JP2016006918A2016-01-14
Other References:
See also references of EP 3633786A4
KAZUAKI YOSHIDA: "Technology and Applications of Microwave Filters", December 2013, JAPAN RADIO CO., LTD. (JRC
Y. UEMICHI: "Compact and low-loss bandpass filter realized in silica-based post-wall waveguide for 60-GHz applications", IEEE MTT-S IMS, May 2015 (2015-05-01)
Attorney, Agent or Firm:
HARAKENZO WORLD PATENT & TRADEMARK (JP)
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