High resolution, wide band Chirp-Z signal analyzer

Details High resolution, wide band Chirp-Z signal analyzer High resolution, wide band Chirp-Z signal analyzer

1989-09-25

1991-02-19

Tokar, Michael J.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Analysis of complex waves

324 77R, 324 79R, G01R 2316

Patent

active

049947400

ABSTRACT:
Wide band and narrow band Chirp-Z channels are interfaced to enhance signal nalysis resolution for the signal's individual component wave forms over a wide signal bandwidth. The frequency characteristic of a selected component wave form is matched to the sweeping local oscillator and filter frequency parameters of the narrow band channel in accordance with the relative position occupied by the frequency characteristic of the selected component wave form in the frequency segregated time domain of said wide band channel. In one preferred embodiment, a mixer and a voltage controlled oscillator are utilized to accomplish the frequency matching and in another embodiment, a band-pass filter precisely defines the bandwidth of the selected component wave form. For still another embodiment, the voltage input to the voltage control oscillator is controlled in accordance with the difference in frequency between the selected component wave form and said narrow band channel.

REFERENCES:
patent: 4357709 (1982-11-01), Butler et al.

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