发明名称 |
Radio-frequency transformer providing automatic gain control and overload protection |
摘要 |
A composite core transformer has a high permeability segment and a low permeability segment such that a saturable portion of the core is used to control RF energy coupled from a receiving antenna to a radio receiver. Transformer input and output windings are wound on the low permeability segment of the composite core. A control winding is wound on the high permeability segment of the core and receives an automatic gain control signal from a radio receiver. The resulting radio receiver has high resistance to overload and an extended dynamic range of automatic gain control.
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申请公布号 |
US4972353(A) |
申请公布日期 |
1990.11.20 |
申请号 |
US19890312162 |
申请日期 |
1989.02.21 |
申请人 |
FORD MOTOR COMPANY |
发明人 |
KENNEDY, JOHN F.;HASHOIAN, RALPH S. |
分类号 |
H03G3/20;H04B1/18 |
主分类号 |
H03G3/20 |
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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