Method and apparatus for measuring frequency pulling in...

Details Method and apparatus for measuring frequency pulling in... Method and apparatus for measuring frequency pulling in...

2005-06-28

2005-06-28

Le, N. (Department: 2858)

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

C324S076190, C324S520000, C324S601000, C324S602000, C324S622000

Reexamination Certificate

active

06911812

ABSTRACT:
A test apparatus and method of measuring pulling of the frequency of an oscillator. The apparatus includes a bias tee, a power supply, a spectrum analyzer, a second power supply, a symmetrical resistive power splitter, a power meter and a synthesized signal generator. The method includes sweeping the synthesized signal generator frequency from the nominal frequency down to a first frequency. The first frequency is recorded when the oscillator goes out of frequency lock as a first pulling frequency. The synthesized signal generator frequency is then sweet from the nominal frequency up to a second frequency and the second pulling frequency is recorded when the oscillator goes out of frequency lock. The difference between the first and second pulling frequencies is the peak to peak pulling value.

REFERENCES:
patent: 6639393 (2003-10-01), Tasker et al.
patent: 6650186 (2003-11-01), Sommer et al.

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