SYSTEMS AND METHODS FOR MINIMIZING SPURS THROUGH DUTY CYCLE ADJUSTMENT

摘要

A frequency source, such as for a wireless communications device, configured to have a duty cycle adjustment. A selected harmonic spur resulting from operation of the frequency source at one duty cycle may be avoided or minimized by operating the frequency source at a second duty cycle. Determination of the appropriate duty cycle may be based on measuring the amplitude of the harmonic spur as it appears in the output of a receive chain of the wireless device. Alternatively, the duty cycle may be set to desired value to avoid or minimize a given harmonic.

主权项

1. A method for reducing a harmonic spur comprising:
operating a frequency source at a first duty cycle such that the harmonic spur has a first amplitude at the first duty cycle; and operating the frequency source at a second duty cycle, such that the harmonic spur has a second amplitude at the second duty cycle, wherein the second amplitude is less than the first amplitude.