Intermodulation distortion analyzer

Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

307261, 324132, H03B 2100

Patent

active

039407039

ABSTRACT:
An intermodulation distortion analyzer generates two pairs of sinusoidal test tones to serve as a test signal for the channel under test. The two pairs of tones simulate two respective noise band test signals but eliminate the long time averaging required for measurements when noise bands are used. A highly linear AGC circuit employs sampling at an output-controlled duty cycle to maintain a constant reference level for the analyzer. This reference level permits automatic distortion measurements to be read out directly in db below the test signal. An RMS detector circuit for second order intermodulation products employs feedback control to maintain the input signal to a squaring circuit constant. Squaring of the constant level sinusoids produces RMS DC components which can be separated for direct measurement. A distortion circuit provides known levels of second and third order intermodulation in the test signal to permit accurate check out of the analyzer.

REFERENCES:
patent: 3159787 (1964-12-01), Sexton et al.
patent: 3571627 (1971-03-01), Cardon
patent: 3795868 (1974-03-01), Ohme et al.
patent: 3840813 (1974-10-01), Allen et al.

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Intermodulation distortion analyzer does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Intermodulation distortion analyzer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Intermodulation distortion analyzer will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-2081895

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.