Instantaneous frequency measurement (IFM) receiver with only two

Details Instantaneous frequency measurement (IFM) receiver with only two Instantaneous frequency measurement (IFM) receiver with only two

1989-07-05

1990-10-16

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 77G, G01R 2316

Patent

active

049638165

ABSTRACT:
The IFM receiver employs only two delay lines, thereby simplifying the IFM receiver design. The basic principle is to use two delay lines to provide fine frequency resolution, and at the same time cover a wide input bandwidth. The two delay line lengths must be relatively prime. The algorithm for achieving frequency resolution is based on the Chinese remainder theorem. That theorem states that if an unknown number X is divided by a with a remainder r.sub.1 and also divided by b with a remainder r.sub.2, where a and b are relatively prime numbers, the number X can be determined from a, b, r.sub.1, and r.sub.2 is X<ab.

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