Non-contact type wave signal observation apparatus

Details Non-contact type wave signal observation apparatus Non-contact type wave signal observation apparatus

1995-01-12

1997-08-12

Wieder, Kenneth A.

Electricity: measuring and testing

Impedance, admittance or other quantities representative of...

Parameter related to the reproduction or fidelity of a...

324630, 324 7612, G01R 2728

Patent

active

056569327

ABSTRACT:
A non-contact type wave signal observation apparatus measures transfer functions of a distributed constant network. A signal is input from a network analyzer to the network to be measured. Electromagnetic waves radiated from the network are received at each observation point on an observation plane arranged in a manner facing the network. The received signals are input to the network analyzer. The transfer functions between an input terminal of the network and each observation point are measured by the network analyzer. The measured transfer functions are converted by an inverse-Fresnel transformer and are stored in memories. The stored data is specified by a control unit and is displayed on a display unit. The stored data can be converted by an inverse-Fourier transformer and is displayed on the display unit as waveforms. Further aspect of the apparatus is, by a non-contact method, to measure signals of a distributed constant network, to determine states of electromagnetic wave in the space, to decrease the amount of calculations in a hologram reconstruction process, and to display a complex three dimensional illustration for a holographic radar.

REFERENCES:
patent: 4247815 (1981-01-01), Larsen et al.
patent: 5260648 (1993-11-01), Brust
patent: 5347375 (1994-09-01), Saito et al.

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