Title:
CIRCUIT BOARD AND ANTENNA MODULE
Document Type and Number:
WIPO Patent Application WO/2020/179476
Kind Code:
A1
Abstract:
On a circuit board (150), a branch circuit for branching a high-frequency signal is formed. The circuit board (150) comprises: a dielectric substrate (130); a ground electrode (GND) placed on the dielectric substrate (130); and a line conductor (400) that is placed on a dielectric substrate (105) so as to face the ground electrode (GND) and is configured to transmit the high-frequency signal. The line conductor (400) comprises: a first conductor (410A) that receives the high-frequency signal; a second conductor (420A) and a third conductor (421A) that branch the high-frequency signal that is input to the first conductor (410A) and output the branched signal; and a matching conductor (430) connected between the first conductor (410A) and the second conductor (420A) or the third conductor (421A). The line conductor (400) has an equal line width around a fork (CP). An effective dielectric constant between the matching conductor (430) and the ground electrode (GND) is different from an effective dielectric constant between the first to third conductors and the ground electrode (GND).
Inventors:
FURUHI TOMOSHIGE (JP)
ARIUMI SANEAKI (JP)
HAMADA SHU (JP)
SUDO KAORU (JP)
HAYAFUJI HISAO (JP)
ARIUMI SANEAKI (JP)
HAMADA SHU (JP)
SUDO KAORU (JP)
HAYAFUJI HISAO (JP)
Application Number:
PCT/JP2020/006804
Publication Date:
September 10, 2020
Filing Date:
February 20, 2020
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01P5/02; H01P5/08; H01P5/12; H05K1/02
Foreign References:
| JP2001196849A | 2001-07-19 | |||
| JP2000307362A | 2000-11-02 | |||
| JP2008035336A | 2008-02-14 |
Attorney, Agent or Firm:
FUKAMI PATENT OFFICE, P.C. (JP)
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