ANTENNA STRUCTURE

• US 3,689,929 A
• Filed: 11/23/1970
• Issued: 09/05/1972
• Est. Priority Date: 11/23/1970
• Status: Expired due to Term

• Current Assignee: Howard B. Moody, 12 South Second St.
• Original Assignee: Howard B. Moody, 12 South Second St.
• Inventors: Howard B. Moody, 12 South Second St.
• Primary Examiner(s): Paul L. Gensler
• Application Number:
  US05/092,287
• Time in Patent Office: 652 Days
• Field of Search: 343/700A,793,795,802,803,806,818,897,908
• US Class Current: 343/802
• CPC Class Codes: H01Q 9/065 Microstrip dipole antennas patch antenna H01Q9/0407
• CPC Class Codes: H01Q 9/26 with folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength resonant loop antennas H01Q7/00

Abstract

This antenna structure designed primarily for the V.H.F. and U.H.F. radio and television frequency spectrums, either transmitting or receiving, comprises a thin-film, electrically conductive element formed on a surface of a relatively thin, flexible supporting substrate with the conductive element being a relatively narrow, elongated strip arranged in a '"'"''"'"''"'"''"'"'Greek-Key'"'"''"'"''"'"''"'"' configuration. This design configuration of the conductive element results in an antenna structure having a physical length which is relatively compressed while maintaining a desired effective electrical length and electromagnetic wave response characteristic. The antenna may be fabricated with a parasitic element for enhanced response with the parasitic element also being of the '"'"''"'"''"'"''"'"'Greek-Key'"'"''"'"''"'"''"'"' design configuration.

Claims

1. An antenna structure comprising an active element having a first '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit electrically connected to a second '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit, a first terminal, a 4 inch electrical conductive member connecting said first '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit to said terminal, a first backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit electrically connected to said second '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit, a Second backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit electrically connected to said first backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit, a third '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit electrically connected to said second backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit, a fourth '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit electrically connected to said third '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit, a third backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit connected to said fourth '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit, a fourth backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit electrically connected to said third backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped electrically conductive unit, a second terminal, a second 4 inch electrical conductive member connecting said second terminal to said fourth backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit, each of said first, second, third and fourth '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units and each of said first, second, third and fourth backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units having a first long leg being 6 inches connected to a first short leg being two inches long, an intermediate length leg being four inches connected to said first two inch short leg, a second two inch leg connected to said intermediate length four inch leg and a second long leg being six inches long connected to said second short leg, a flexible sheet of dielectric material, having a first surface, said first, second, third and fourth '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units and said first, second, third and fourth backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units all being mounted on said first surface of said flexible dielectric sheet, the combined linear length of said interconnected first, second, third and fourth '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units and said first, second, third and fourth backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units being approximated by the mathematical relationship L 2220/f where L is the length in inches and f is the design frequency in MHz, said first and second '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit lying in the same horizontal line as said third and fourth backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units, and said third and fourth '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units lying in the same horizontal line as said first and second backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive units.

2. An antenna structure according to claim 1, which includes a parasitic element disposed in spaced parallel relationship to said active element and which includes a first and second '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit connected to each other and first and second backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit connected to each other and said second '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit being connected to said first backward '"'"''"'"''"'"''"'"'S'"'"''"'"''"'"''"'"' shaped conductive unit.