发明名称 |
AM antenna noise reducing |
摘要 |
An AM radio antenna circuit having a ferrite bar loop antenna comprises a resonating structure forming a balanced antenna circuit, a varactor diode tuning structure presenting a controllable capacitance to said winding structure, a DC path including the winding structure coupled to the varactor constructed and arranged to deliver a tuning signal to the varactor, and means for connecting the antenna circuit to the input of an external detector integrated circuit.
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申请公布号 |
US2004061659(A1) |
申请公布日期 |
2004.04.01 |
申请号 |
US20020256511 |
申请日期 |
2002.09.27 |
申请人 |
DUNN CHARLES E.;PARKER ROBERT PRESTON |
发明人 |
DUNN CHARLES E.;PARKER ROBERT PRESTON |
分类号 |
H01Q1/24;H01Q5/00;H01Q7/00;H01Q7/08;H03J3/20;(IPC1-7):H01Q7/08 |
主分类号 |
H01Q1/24 |
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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