Title:
TRANSMISSION/RECEPTION DEVICE
Document Type and Number:
WIPO Patent Application WO/2015/146316
Kind Code:
A1
Abstract:
A transmission/reception device (10) comprising a control unit (11), an antenna duplexer (12), a transmission circuit (131), a reception circuit (132), a detection unit (16), an antenna matching circuit (17), and a load adjustment circuit (20). The detection unit (16) is connected to the antenna side of the antenna duplexer (12). The detection unit (16) detects reflected signals generated when the transmission signals are reflected by the antenna. The control unit (11) adjusts the element values for a capacitor and a resistance that constitute the load adjustment circuit (20), on the basis of the detected reflected signals. The load adjustment circuit (20) is connected to the antenna duplexer (12) and, by adjusting the element values for the load adjustment circuit (20), adjusts the impedance of the antenna duplexer (12) and matches impedance between the antenna and the antenna duplexer (12).
Inventors:
OBIYA HIDENORI (JP)
HORITA ATSUSHI (JP)
HORITA ATSUSHI (JP)
Application Number:
PCT/JP2015/053467
Publication Date:
October 01, 2015
Filing Date:
February 09, 2015
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H04B1/50; H03H7/38; H03H7/46; H03H11/34
Foreign References:
| JP2013038613A | 2013-02-21 | |||
| JP2014003460A | 2014-01-09 |
Attorney, Agent or Firm:
Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
Patent business corporation Kaede Patent Attorneys' Office (JP)
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