Self-contained, real-time spectrum analyzer

Details Self-contained, real-time spectrum analyzer Self-contained, real-time spectrum analyzer

1989-03-06

1990-08-21

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 77D, 370 691, G01R 2316

Patent

active

049509993

ABSTRACT:
A self-contained, real-time spectrum analyzer performs the function of spectrum analysis on one or more analog electrical signals. The analyzer consists of an oversampling analog-to-digital converter 104, which converts the input signal 100 to digital form. The digital signal enters a digital signal processing integrated circuit microprocessor 108, which is operated by a stored program 112 that includes a spectrum analysis program 116. The output 122 of the digital signal processor 108 can be converted to analog signals by digital analog converters 124 for display on an external oscilloscope. A variable frequency oscillator 200 controls the sampling of the analog-to-digital converter 104, providing continuously variable analysis bandwidth. The output of the digital signal processor 108 can be applied to a display register and driver 300, which changes the output into a data format 302 suitable for use by a flat screen display 304. Visual output is presented to the user on a flat screen display 304, such as a liquid crystal display or electroluminescent display.

REFERENCES:
patent: 4410970 (1983-10-01), Law
patent: 4509526 (1985-04-01), Barnes et al.
patent: 4845707 (1989-07-01), Isaacson et al.

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