Wonder generator, digital line tester comprising the same, and phase noise transfer characteristic analyzer
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United States of America Patent
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Apr 17, 2007
Grant Date -
Apr 3, 2003
app pub date -
Dec 22, 2000
filing date -
Dec 24, 1999
priority date (Note) -
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status (Latency Note)
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Abstract
A wander generator has a random number signal generator unit, a filter unit, a clock generator unit, a modulator unit, and a setting unit. The random number generator unit sequentially generates random number signals comprised of a plurality of bits at a constant speed in accordance with a predetermined algorithm. The filter unit receives a random number signal sequence generated by the random number signal generator unit for filtering. The clock generator unit generates a clock signal. The modulator unit modulates the frequency of clock signal generated by the clock generator unit with a signal output from the filter unit. The setting unit applies the filter unit with a signal for setting each amplitude value of a spectrum of a signal sequence output from the filter unit.
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