Adjustable frequency scanning signal processor
US3955137A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 2, 1974 |
| Grant date | May 4, 1976 |
| Priority date | — |
| Expiry date | Aug 2, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R23/00
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A compressive or "microscan" signal processor adapted for the simultaneous measurement of multifrequency signal components which encompass a broad frequency spectrum. In accordance with one embodiment of the invention, the applied signals are processed through a mixer which is driven by a linear frequency versus time waveform sweep signal. The output from the mixer is applied to one input port of a nonlinear correlator, and a second input port of the correlator is supplied with a linear frequency versus time waveform signal whose slope is opposite from that of the sweep signal applied to the mixer. The output signal from the correlator comprises a series of pulses which are displaced in time as a function of the frequency of the corresponding portions of the applied signals, and whose amplitudes are representative of the relative energy distribution of the applied signals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.