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US 2002/0094796 A1Published application
Phase detector circuit and method therefor
OwnerDonnie W. Woods, Craig K. Northrupinventors
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OwnerDonnie W. Woods, Craig K. Northrupinventors
Estimating the term…
A phase detector having improved dynamic range, frequency range, multiplication factor range, and detector gain. The detector converts a reference signal into a square wave. The square wave signal causes a step recovery diode in a sampling phase detector to trigger on a leading edge to obtain a more consistent and more precise sampling of an oscillator signal. The phase detector includes a saturated amplifier to convert the reference signal to a square wave signal, a transformer to impedance match the amplifier with the sampling phase detector and to generate a balanced output of the square wave signal. The sampling phase detector generates a phase error signal indicative of the phase difference between the reference signal and the oscillator signal. The sampling phase detector includes balanced outputs having oppositely-phased phase error signals. A potentiometer is provided to reduce or eliminate any imbalances in the oppositely-phased phase error signals.
A phase detector for generating a phase error signal indicative of a phase difference between a reference signal and an oscillator signal, comprising:
A method of generating a phase error signal indicative of a phase difference between a reference signal and an oscillator signal, comprising:
A local oscillator, comprising:
A receiver or transmitter having at least one frequency conversion stage, wherein said frequency conversion stage comprises:
Dependencies are inferred from the claim text.