发明名称 |
RF modulator and switch having high antenna isolation |
摘要 |
An RF modulator/switch selectably couples a locally generated and conducted RF signal or an antenna RF signal to a broadcast radio receiver. A local RF input receives the conducted RF signal. An antenna RF input receives the antenna RF signal in response to a radiated RF broadcast in a broadcast band. A resonant network has a first node coupled to the antenna RF input and has a resonant frequency corresponding to the broadcast band. A first relay has a first output selectably coupled to either the antenna RF input or a second node of the resonant network. A second relay has a second output selectably coupled to either the local RF input or the first output of the first relay. When the second relay selects the local RF input then the first relay selects the second node of the resonant network and when the second relay selects the first output of the first relay then the first relay selects the antenna RF input.
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申请公布号 |
US6909885(B2) |
申请公布日期 |
2005.06.21 |
申请号 |
US20020301149 |
申请日期 |
2002.11.21 |
申请人 |
VISTEON GLOBAL TECHNOLOGIES, INC. |
发明人 |
KENNEDY JOHN FRANCIS;TILLO EDMUND JOE |
分类号 |
H04B1/10;(IPC1-7):H04B1/38 |
主分类号 |
H04B1/10 |
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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