Title:
送信装置
Document Type and Number:
Japanese Patent JP5932689
Kind Code:
B2
Abstract:
A square detection circuit square-detects a portion of a high frequency transmission signal that is extracted by a directional coupler, of a high frequency transmission signal amplified by a power amplifier. A first adjustment circuit extracts a DC component from a detection output of the square detection circuit, and adjusts respective amplitudes of baseband I and Q signals generated by an I/Q signal generation circuit, in response to the extracted DC component. A second adjustment circuit extracts an AC component from the detection output of the square detection circuit, and adjusts the respective amplitudes and phases, and the respective DC offsets of the baseband I and Q signals generated by the I/Q signal generation circuit, in response to the extracted AC component.
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Inventors:
Shunsuke Hirano
Atsushi Yoshimoto
Atsushi Yoshimoto
Application Number:
JP2013053820A
Publication Date:
June 08, 2016
Filing Date:
March 15, 2013
Export Citation:
Assignee:
Panasonic Corporation
International Classes:
H04L27/34; H04B1/04; H04L27/20; H04L27/36
Domestic Patent References:
| JP2009206556A | ||||
| JP2012004936A | ||||
| JP2011103541A | ||||
| JP2011049874A | ||||
| JP2006041631A | ||||
| JP2001044762A | ||||
| JP2008124836A | ||||
| JP2006527530A | ||||
| JP8018612A |
Foreign References:
| WO2008018263A1 | ||||
| WO2009008445A1 |
Other References:
C.P.Lee et al.,A Highly Linear Direct-Conversion Transmit Mixer Transconductance Stage with Local Oscillation Feedthrough and I/Q Imbalance Cancellation Scheme,Solid-State Circuits Conference, 2006. ISSCC 2006. Digest of Technical Papers. IEEE International,IEEE,2006年,pp.1450-1459
Attorney, Agent or Firm:
Patent business corporation glory patent office
Kimihide Hashimoto
Yoshiaki Masaaki
Kimihide Hashimoto
Yoshiaki Masaaki