发明名称 |
SIGNAL TUNING WITH VARIABLE INTERMEDIATE FREQUENCY FOR IMAGE REJECTION AND METHODS |
摘要 |
In a method and apparatus for operating a super-heterodyne receiver, a tuning circuit has a local oscillator for frequency shifting a desired channel to a selected frequency and a controller for controlling the local oscillator. The controller determines for each of a number of identified channels, whether an image signal is present at frequencies in the spectrum that when tuned to a first selected frequency interfere, and is operable to select a modified selected frequency at which interference between the image signal and the identified channel is reduced. |
申请公布号 |
WO2011082485(A1) |
申请公布日期 |
2011.07.14 |
申请号 |
WO2011CA00016 |
申请日期 |
2011.01.11 |
申请人 |
FRESCO MICROCHIP INC. |
发明人 |
TRYHUB, JOHN;GREGGAIN, LANCE;CHENG, GARY;JANTZI, STEPHEN, A. |
分类号 |
H03J1/06;H03J3/02;H04B1/26 |
主分类号 |
H03J1/06 |
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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