Plural concentric parabolic antenna for omnidirectional coverage

• US 3,317,912 A
• Filed: 07/29/1963
• Issued: 05/02/1967
• Est. Priority Date: 07/29/1963
• Status: Expired due to Term

• Current Assignee: Kenneth S. Kelleher
• Original Assignee: Kenneth S. Kelleher
• Inventors: Kelleher, Kenneth S.
• Application Number:
  US04/298,505
• Time in Patent Office: 1,373 Days
• US Class Current: 343/836
• CPC Class Codes: H01Q 21/20 the units being spaced along or adjacent to a curvilinear path slotted waveguide arrays H01Q21/005; circularly or helically slotted waveguides H01Q21/0062
• CPC Class Codes: H01Q 25/007 using two or more primary active elements in the focal region of a focusing device for operation on different wavebands H01Q5/22

Claims

1. AN OMNIDIRECTIONAL MICROWAVE ANTENNA HAVING A RELATIVELY HIGH GAIN CHARACTERISTIC IN PREDETERMINED RADIAL DIRECTIONS ABOUT A SELECTED CENTER LINE AND ADAPTED FOR USE IN THIN ROUTE COMMUNICATION SYSTEMS COMPRISING A REFLECTOR ASSEMBLY HAVING A PLURALITY OF N WAVE ENERGY REFLECTIVE SURFACE SEGMENTS, EACH OF SAID SEGMENTS HAVING A REFLECTIVE SURFACE CONFIGURATION OF THE PARABOLIC TORUS VARIETY WITH RESPECTIVE AXIS OF ROTATION, SAID AXIS OF ROTATION BEING SUBSTANTIALLY EQUIDISPOSED WITH RESPECT TO EACH OTHER ABOUT SAID SELECTED CENTER LINE, EACH OF SAID SEGMENTS DISPOSED WITH ITS RESPECTIVE REFLECTIVE SURFACE FACING OUTWARD RELATIVE TO SAID SELECTED CENTER LINE;

AND A PLURALITY OF WAVE ENERGY FEED MEANS DISPOSED TO DIRECT WAVE ENERGY AT EACH OF SAID RESPECTIVE N WAVE ENERGY REFLECTIVE SURFACE SEGMENTS OF SAID REFLECTOR ASSEMBLY SUCH THAT WAVE ENERGY MAY BE REFLECTED THEREFROM IN PREDETERMINED DIRECTIONS, SAID WAVE ENERGY FEED MEANS BEING DISPOSED IN A COMMON PLANE AND BEING SPACED EQUIDISTANTLY FROM THE RESPECTIVE REFLECTIVE SURFACE SEGMENTS TOWARD WHICH WAVE ENERGY IS DIRECTED.