Combined signal level meter and leakage detector
First Claim
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1. A combined signal level meter and leakage detector, comprising:
- a first RF input;
a second RF input;
a wideband dual-conversion receiver front end connected to said first RF input;
a single-conversion receiver front end connected to said second RF input;
an IF stage having an input connected to said dual-conversion receiver front end and an input connected to said single-conversion receiver front end;
a detector having an input connected to said IF stage;
a processing and control circuit having an input connected to said detector;
display means for selectively displaying signal level data and leakage data provided by said dual-conversion receiver front end and said single-conversion receiver front end, respectively.
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Abstract
A combined signal level meter and leakage detector having a built-in antenna for the leakage detector, and dual clock frequency control of the microcontroller along with bandwidth switching for greater sensitivity in leakage detection mode. A data logging function is also provided. Control circuitry is also provided for avoiding receiver spurs by combined switching of multiple local oscillator frequencies, including combinations of high-side and low-side injection and IF shifting.
54 Citations
14 Claims
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1. A combined signal level meter and leakage detector, comprising:
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a first RF input; a second RF input; a wideband dual-conversion receiver front end connected to said first RF input; a single-conversion receiver front end connected to said second RF input; an IF stage having an input connected to said dual-conversion receiver front end and an input connected to said single-conversion receiver front end; a detector having an input connected to said IF stage; a processing and control circuit having an input connected to said detector;
display means for selectively displaying signal level data and leakage data provided by said dual-conversion receiver front end and said single-conversion receiver front end, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification