Folded lens antenna
AssigneeCommonwealth Scientific and Industrial Research Organisation
InventorGeoffery T. Poulton
Life of this patent
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Abstract
A scanning folded lens antenna system for scanning reception and/or transmission of electromagnetic radiation and method of scanning receiving and/or transmitting electromagnetic energy. The folded lens has a first cylindrical parallel plate waveguide, a second cylindrical parallel plate waveguide, a waveguide coupler operatively associated with the first and second waveguides to communicate a signal therebetween so as to transform a cylindrical signal from the first waveguide to a substantially planar phase signal in the second waveguide, and a plurality of coupling device operatively associated with first waveguide for coupling a signal between the first waveguide and the coupling device.
Claims20
A folded lens transmit/receive antenna comprising:
- a first curved parallel plate waveguide;
- a second curved parallel plate waveguide;
- waveguide coupling means operatively associated with the first and second waveguides for communicating a signal therebetween as to transform a signal comprising a wave having a substantially curved wave front from the first waveguide to a signal comprising a wave having a substantially planar wave front in the second waveguide;
- free space coupling means for coupling a signal between the second waveguide and free space, the free space coupling means being operatively associated with the second parallel plate waveguide;
- and
- plurality of coupling devices arranged about a curved reflector disposed in the first waveguide for coupling a signal between the first waveguide and transmit/receive apparatus connectable to said coupling devices to enable scanning of an antenna radiation pattern.
Dependencies are inferred from the claim text.