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PHYSICALLY SMALL COMBINED LOOP AND DIPOLE ALL CHANNEL TELEVISION ANTENNA SYSTEM

  • US 3,721,990 A
  • Filed: 12/27/1971
  • Issued: 03/20/1973
  • Est. Priority Date: 12/27/1971
  • Status: Expired due to Term
First Claim
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1. An antenna system for operation in the very high frequency band and in the ultra high frequency band comprising:

  • a conductive loop having a pair of gaps at opposite points along said loops, a first of said gaps forming a pair of feed terminals adapted to be coupled to a first transmission line, a predominantly resistive impedance serially connected in said loop and across the second of said pair of gaps located directly opposite the first of said pair of gaps, the linear dimension of said loop between diametrically opposed points on said loop midway between the pair of gaps being less than a half of an operating very high frequency wave such that said loop has a maximum response to said signals in the direction of said first gap and a lesser response in the opposite direction, an ultra high frequency dipole element fixed substantially inboard said loop and having a total length to act as a half wavelength dipole element for a frequency within the ultra high frequency band, said dipole element having terminal means adapted to be coupled to a second transmission line.

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