Title:
HIGH-FREQUENCY FRONT-END CIRCUIT AND COMMUNICATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2017/138539
Kind Code:
A1
Abstract:
An RF front-end circuit (2) comprises: an antenna common terminal (20) connected to an antenna element (1); an SPDT switch circuit (21) having a common terminal (21c) and selection terminals (21s1 and 21s2); and four filter elements (22A to 22D). The common terminal (21c) and the filter elements (22C and 22D) are connected to the antenna common terminal (20), and the filter elements (22A and 22B) are connected to the selection terminals (21s1 and 21s2), respectively. Passbands of the filter elements (22A, 22C, and 22D) do not overlap with one another. Passbands of the filter elements (22B, 22C, and 22D) do not overlap with one another. Passbands of the filter elements (22A and 22B) partially overlap with each other.
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Inventors:
NOSAKA KOJI (JP)
Application Number:
PCT/JP2017/004461
Publication Date:
August 17, 2017
Filing Date:
February 07, 2017
Export Citation:
Assignee:
MURATA MANUFACTURING CO (JP)
International Classes:
H03H7/12; H03H7/46; H04B1/00; H04B1/48; H04B1/50
Domestic Patent References:
| WO2015099105A1 | 2015-07-02 | |||
| WO2013080428A1 | 2013-06-06 |
Foreign References:
| JP2001160766A | 2001-06-12 | |||
| JP2009130831A | 2009-06-11 | |||
| JP2000323961A | 2000-11-24 |
Attorney, Agent or Firm:
YOSHIKAWA, Shuichi et al. (JP)
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