Method for enlarging the interference-free dynamic range of non-linear signal processing components
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United States of America Patent
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May 15, 2007
Grant Date -
Dec 30, 2004
app pub date -
Apr 23, 2004
filing date -
Apr 25, 2003
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Abstract
A method for enlarging the interference-free dynamic range of non-linear signal-processing components in receiver systems, in the conversion of input frequencies f.sub.in into output frequencies f.sub.out. According to the invention, at least one linear combination of at least one input frequency f.sub.in,t, f.sub.in,b and a fixed, predetermined oscillator f.sub.LOn of the components is calculated from the output signal of the component, for at least one output frequency f.sub.out,s, f.sub.out1,s, f.sub.outs,2, which combination is compared with any desired output frequency f.sub.out,t of the component, whereby the output frequency f.sub.out,s, f.sub.out1,s, f.sub.outs,2 is then recognized as a spur and eliminated from the output signal of the component, if the calculated linear combination corresponds to any desired output frequency f.sub.out,t of the component, within a frequency and power range that can be predetermined.
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