发明名称 |
Frequency synthesizer module for dual band radio |
摘要 |
A frequency synthesizer module with temperature compensation of a crystal oscillator circuit frequency controlled by a varactor. A module memory contains information characterizing a temperature dependency of a crystal which is applied to the varactor to temperature compensate the crystal in response to a temperature sensor signal. The module includes at least one locked loop circuit including a loop filter, at least one associated frequency divider, and a switchable dual band voltage controlled oscillator. The crystal oscillator is coupled to the at least one locked loop circuit and the frequency of the crystal is controlled by the memory via the varactor such that a temperature compensated output frequency is provided by the module. |
申请公布号 |
AU2191700(A) |
申请公布日期 |
2000.07.12 |
申请号 |
AU20000021917 |
申请日期 |
1999.12.16 |
申请人 |
CTS CORPORATION |
发明人 |
THOMAS A. KNECHT;IYAD ALHAYEK;JEFFREY DYKSTRA |
分类号 |
H03J5/02;H03L1/02;H03L7/099;H03L7/18;H03L7/197;H04B1/28;H04B1/40 |
主分类号 |
H03J5/02 |
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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