Title:
FILTER DEVICE, AND ANTENNA MODULE AND COMMUNICATION DEVICE PROVIDED WITH FILTER DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/184205
Kind Code:
A1
Abstract:
The present invention provides a filter device (130) formed between an input end (T1) and an output end (T2), the filter device (130) being configured to attenuate high-frequency signals in a specific frequency band. The filter device (130) is provided with a multilayer structure comprising a dielectric substrate (140), ground electrodes (GND1, GND2) formed on the dielectric substrate (140), a first coupling line (132) electrically connected to the input end (T1), a second coupling line (134) electrically connected to the output end (T2), and a stub (133) connected to the first coupling line (132) and the second coupling line (134). The first coupling line (132) and the second coupling line (134) are formed in layers different to the ground electrodes (GND1, GND2). The first coupling line (132) is disposed in a layer different to the second coupling line (134) so as to face each other. The first coupling line (132) and the second coupling line (134) face each other.
Inventors:
KURODA KATSUHITO (JP)
Application Number:
PCT/JP2020/008125
Publication Date:
September 17, 2020
Filing Date:
February 27, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01P1/203; H01Q23/00
Domestic Patent References:
| WO2018074377A1 | 2018-04-26 |
Foreign References:
| JP2014236362A | 2014-12-15 | |||
| US20140035703A1 | 2014-02-06 | |||
| JPH0277904U | 1990-06-14 | |||
| JP2007142876A | 2007-06-07 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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