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Shielded dipole glass antenna with coaxial feed

  • US 4,746,925 A
  • Filed: 07/25/1986
  • Issued: 05/24/1988
  • Est. Priority Date: 07/31/1985
  • Status: Expired due to Fees
First Claim
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1. A glass antenna formed in a pattern on the surface of glass mounted on a vehicle and connected to a feeder, comprising:

  • (a) a pair of dipole antenna elements having a strip configuration and disposed to longitudinally extend in one direction, said pair of dipole antenna elements forming in combination a substantially straight line between longitudinal axes thereof;

    (b) a central lead wire led out from one end of either one of said dipole antenna elements in a direction substantially perpendicular to the longitudinal axis of said antenna element;

    (c) a first shielding lead wire led out from one end of the other dipole antenna element in a direction substantially perpendicular to the longitudinal axis of said antenna element and apart from said central lead wire;

    (d) a second shielding lead wire disposed in such a manner that it extends substantially parallel with and apart from said central lead wire and said first shielding lead wire so as to interpose said central lead wire between the same and said first shielding lead wire; and

    (e) a pair of balanced-to-unbalanced transformers branching off from the respective intermediate portions of said first and second shielding lead wires so as to extend adjacent to but apart from respective intermediate portions of said pair of dipole antenna elements,whereby washing and garaging of the vehicle are facilitated.

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