发明名称 |
CARRIER LEAKAGE CORRECTION DEVICE AND CARRIER LEAKAGE CORRECTION METHOD |
摘要 |
A carrier leakage correction device includes a non-modulation signal generator that outputs a first non-modulation signal having a first amplitude or a second non-modulation signal having a second amplitude larger than the first amplitude, a quadrature modulator that performs quadrature modulation on the first or second non-modulation signal and converts a first or second quadrature modulation signal into a high-frequency signal, an envelope detector that detects an envelope of the high-frequency signal, a correction value searcher that performs a search for a correction value giving a minimum value of a fluctuation amount of an envelope amplitude of the envelope detected by the envelope detector by changing a candidate for the correction value, and a corrector that adds the correction value obtained through the search of the correction value searcher to the first or second non-modulation signal. |
申请公布号 |
US2015256208(A1) |
申请公布日期 |
2015.09.10 |
申请号 |
US201514633564 |
申请日期 |
2015.02.27 |
申请人 |
Panasonic Intellectual Property Management Co., Ltd. |
发明人 |
TANAKA KOICHIRO;KOBAYASHI MASASHI |
分类号 |
H04B1/10;H04B17/29 |
主分类号 |
H04B1/10 |
代理机构 |
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代理人 |
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主权项 |
1. A carrier leakage correction device comprising:
a non-modulation signal generator that outputs a first non-modulation signal having a first amplitude or a second non-modulation signal having a second amplitude larger than the first amplitude; a quadrature modulator that performs quadrature modulation on the first or second non-modulation signal and converts a first or second quadrature modulation signal into a high-frequency signal; an envelope detector that detects an envelope of the high-frequency signal; a correction value searcher that performs a search for a correction value giving a minimum value of a fluctuation amount of an envelope amplitude of the envelope detected by the envelope detector by changing a candidate for the correction value; and a corrector that performs addition of the correction value obtained through the search of the correction value searcher to the first or second non-modulation signal. |
地址 |
Osaka JP |