Title:
ANTENNA CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/065142
Kind Code:
A1
Abstract:
This antenna circuit is provided with: a radiation conductor (10); a matching circuit (30) which is arranged between a feeding port (10F) of the radiation conductor (10) and a feeding circuit (20); and a frequency characteristic adjusting circuit (40) which is connected between a frequency characteristic adjusting port (10C) of the radiation conductor (10) and the grounding, and which comprises a variable reactance circuit (40R). The matching circuit (30) comprises a shunt connected first inductance element (L1); the frequency characteristic adjusting circuit (40) comprises a second inductance element (L2); and the first inductance element (L1) and the second inductance element (L2) are magnetically coupled to each other.
Inventors:
NISHIDA HIROSHI (JP)
ISHIZUKA KENICHI (JP)
ISHIZUKA KENICHI (JP)
Application Number:
PCT/JP2016/080162
Publication Date:
April 20, 2017
Filing Date:
October 12, 2016
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H01Q5/328; H01F17/00; H01F27/00; H01Q1/50; H01Q5/10; H01Q9/04; H03H7/38; H04B1/40; H04M1/724
Domestic Patent References:
| WO2001024316A1 | 2001-04-05 | |||
| WO2014050482A1 | 2014-04-03 |
Foreign References:
| JP2012160817A | 2012-08-23 |
Attorney, Agent or Firm:
KAEDE PATENT ATTORNEYS' OFFICE (JP)
Download PDF:
Previous Patent: LC COMPOSITE ELECTRONIC COMPONENT AND MOUNTING STRUCTURE FOR LC COMPOSITE ELECTRONIC COMPNENT
Next Patent: COMMON-MODE CHOKE COIL
Next Patent: COMMON-MODE CHOKE COIL