发明名称 |
High-frequency signal receiver |
摘要 |
A high-frequency signal receiver includes a variable gain amplifier for amplifying a high frequency signal input thereto, a local oscillator, a mixer for mixing a signal output from the variable gain amplifier and a signal output from the local oscillator, a filter for receiving a signal output from the mixer, a gain controller for outputting a voltage according to the signal output from the mixer; and a weighting circuit for weighting and summing a control voltage and the signal output from the gain controller for controlling the gain of the variable gain amplifier. The high-frequency signal receiver hence creates a small amount of signal error even when the input signal includes a large interference signal adjacent to a desired signal. <IMAGE>
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申请公布号 |
EP1355419(A2) |
申请公布日期 |
2003.10.22 |
申请号 |
EP20030008490 |
申请日期 |
2003.04.11 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD |
发明人 |
FUJISHIMA, AKIRA;ADACHI, KENJI;TAKEUCHI, HIROTOSHI;OBA, YASUO;OZEKI, HIROAKI;IPPEI, KANNO |
分类号 |
H04N5/52;H03G3/20;H03G3/30;H04B1/10;H04B1/16;(IPC1-7):H03G3/30 |
主分类号 |
H04N5/52 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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