Parabolic aerial with a conical diffusion disc for fill...

Details Parabolic aerial with a conical diffusion disc for fill... Parabolic aerial with a conical diffusion disc for fill...

2006-10-12

2009-11-17

Owens, Douglas W. (Department: 2821)

Communications: radio wave antennas

Antennas

Antenna with parasitic reflector

C343S775000, C343S779000, C343S7810CA

Reexamination Certificate

active

07619581

ABSTRACT:
Reflections on the aerial system of a fill level radar result in reduced measuring quality at short range. Small echo signals at short range can thus disappear in the noise. According to one embodiment of the present invention a parabolic aerial for a fill level radar is stated, which parabolic aerial comprises a parabolic mirror, an exciter and a diffusion disc. The diffusion disc is used for laterally removing interfering electromagnetic waves that would otherwise be absorbed by the exciter. In this way the decay behaviour at short range can be reduced.

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Siegel et al., “The Dielectric Filled Parabol: A New High Frequency integrated Receiver or Transmitter Front End”, IEEE, 1989, pp. 1191-1194.
Westerlind, “Level Gauging by Radar”, Advances in Instrumentation and Control, No. 44, Part 4, 12 sheets.

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