Microwave tank-contents level measuring assembly with a phase co

Details Microwave tank-contents level measuring assembly with a phase co Microwave tank-contents level measuring assembly with a phase co

1985-12-30

1987-06-02

Tubbesing, T. M.

Communications: directive radio wave systems and devices (e.g.,

Determining distance

Material level within container

73290R, G01F 2300, G01S 1308

Patent

active

046707549

ABSTRACT:
High amplitude signals reflected back to the horn radiator-receptor in a microwave tank-contents measuring assembly from the interface between a microwave dielectric lens and the tank-contents-atmosphere, which reflected signals mimic returning ranging signals and interfere with detection of returning legitimate ranging signals, are substantially canceled by incorporating in the lens which is plano-convex a thin layer of electrically conductive material in a plane parallel to the plano surface of the lens, said layer being formed from a uniform array of a repetitive pattern of regions containing the conductive material alternating with regions free of said material. One embodiment has an hexagonal array of circular conductive regions while another embodiment has the conductive material in the form of a rectilinear grid.

REFERENCES:
patent: 4566321 (1986-01-01), Zacchio

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