Microwave field detector

Details Microwave field detector Microwave field detector

1976-10-18

1977-09-27

Rolinec, Rudolph V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With waveguide or long line

324106, 325363, 350160LC, G01R 2104, G01R 522, G02F 113

Patent

active

040514358

ABSTRACT:
Liquid crystals having color play centered at different temperatures are arranged in a similar pattern on metal coated and non-metal coated disks which are used to monitor electromagnetic radiation. An embodiment which measures radiation in the range of 1 to 15 mW/cm.sup.2 at 2.45 GHz is described. The monitor uses the temperature-dependent light scattering properties of liquid crystals as the measuring and indicating mechanism. While both disks will respond equally to changes in ambient temperature, the metal coated disk also responds to induced temperature changes caused by incident radiation. Thus the difference between the temperature indications of the two disks is a measure of the radiation present.

REFERENCES:
patent: 2449072 (1948-09-01), Houghton
patent: 3693084 (1972-09-01), Augustine

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