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Microstrip antenna having a plurality of broken loops

  • US 5,646,633 A
  • Filed: 04/05/1995
  • Issued: 07/08/1997
  • Est. Priority Date: 04/05/1995
  • Status: Expired due to Term
First Claim
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1. A microstrip antenna comprising:

  • a ground plane of conductive material, said ground plane having opposed first and second sides and defining at least one aperture extending therethrough;

    a feedline conductor having a first portion which extends through the aperture defined in said ground plane, said feedline conductor also having a second portion, connected to the first portion, which extends parallel to said ground plane on the second side thereof; and

    a plurality of mutually parallel broken loops disposed on the second side of said ground plane, each of said broken loops being comprised of a conductive material and extending from a first end to an opposed second end, wherein the respective first ends of each of said loops are connected to the second portion of said feedline conductor such that each of said broken loops is commonly fed by said feedline conductor, and wherein each broken loop extends about an angular region of less than 360°

    such that each second end is spaced apart from a respective first end.

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