发明名称 |
Local oscillator frequency drift compensation circuit |
摘要 |
The invention provides a double superheterodyne receiver having the usual first and second frequency changers associated with first and second local oscillators. The second local oscillator is provided as a voltage controlled oscillator and means are provided for determining the difference frequency between the two local oscillators to produce a control signal which is applied to the second local oscillator to tend to maintain the difference frequency constant.
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申请公布号 |
US4340974(A) |
申请公布日期 |
1982.07.20 |
申请号 |
US19810236984 |
申请日期 |
1981.02.23 |
申请人 |
EDDYSTONE RADIO LIMITED |
发明人 |
COOKE, BILLY O.;NIELD, PHILIP N. |
分类号 |
H04B1/26;(IPC1-7):H04B1/26 |
主分类号 |
H04B1/26 |
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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