发明名称 |
Tuner for digital satellite receiver |
摘要 |
A tuner of for a digital satellite television receiver comprises a single conversion stage which produces an IF signal at a low enough frequency to permit a SAW filter to be used to perform symbol shaping as well as the normal IF filtering function. The local oscillator is controlled by a phase locked loop tuning control IC normally used to control the local oscillator of a tuner of a conventional broadcast or cable television receiver. In an exemplary embodiment for tuning RF signals provided by a block converter in the 950 to 1450 mHz frequency range, the IF has a center frequency of 140 mHz. |
申请公布号 |
AU5931396(A) |
申请公布日期 |
1996.12.24 |
申请号 |
AU19960059313 |
申请日期 |
1996.05.28 |
申请人 |
THOMSON CONSUMER ELECTRONICS, INC |
发明人 |
MICHAEL ANTHONY PUGEL;KURT JOSEPH RICHTER |
分类号 |
H04N5/44;H03J1/00;H03J7/02;H03L7/107;H04B1/26 |
主分类号 |
H04N5/44 |
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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