Patent · US Expired

Method of converting transverse electrical modes and a helically outlined aperture antenna for implementing the method

US5266962A · kind A · utility

7Cited by

7References

6Claims

0Family size

Assignee

Kernforschungszentrum Karlsruhe GmbH · DE

Inventors

Arnold Mobius · Neubiberg, DE
Manfred Thumm · Ottawa, CA

Key dates

Filing date	Dec 6, 1991
Grant date	Nov 30, 1993
Priority date	—
Expiry date	Dec 6, 2011

Classification

Technology area (CPC H)Electricity
CPC primaryH01Q19/15
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A mode converter for converting transverse electric modes into hybrid modes of type EH.sub.mn and including a circular waveguide provided with corrugations extending in a circumferential (azimuth) direction that become deeper toward its end and are continued in a subsequent helically outlined aperture antenna with constant depth. The emitted radiation is circularly polarized and, by the use of suitable reflectors for the emitted radiation, may be cause to be linearly polarized. The emitted radiation no longer has any sidelobes in the far field and its characteristic has a Gaussian profile over the azimuth angle.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.