Coaxial helical antenna
OwnerWilliam O'Keefe Coburn, Timothy Allen Burchaminventors
Life of this patent
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Abstract
A coaxial helical antenna for transmitting or receiving information through electromagnetic waves includes a first helical antenna comprising a first helix comprising a first diameter and a center cavity; a second helical antenna comprising a second helix comprising a second diameter, wherein the second diameter is smaller than the first diameter, and wherein the second helical antenna is seated within the center cavity of the first helical antenna; a shaped ground plate coupled to the first helical antenna and the second helical antenna; and two microstrip impedance transformers coupled to the first helical antenna, the second helical antenna, and the shaped ground plate.
Claims20
An apparatus for sending and receiving information from an electromagnetic wave, said apparatus comprising:
- a first helical antenna comprising a first helix comprising a first diameter and a center cavity;
- a second helical antenna comprising a second helix comprising a second diameter, wherein said second diameter is smaller than said first diameter, and wherein said second helical antenna is seated within said center cavity of said first helical antenna;
- a shaped ground plate coupled to said first helical antenna and said second helical antenna;
- and
- a microstrip impedance transformer coupled to said first helical antenna, said second helical antenna, and said shaped ground plate.
A system for sending or receiving information from an electromagnetic wave, said system comprising:
- a first helical antenna comprising a first helical element formed as a helix comprising a first diameter and a center cavity;
- a second helical antenna comprising a second element formed as a helix comprising a second diameter, wherein said second diameter is less than said first diameter and said second helical antenna is seated within said center cavity of said first helical antenna;
- a shaped ground plate coupled to said first helical antenna and said second helical antenna;
- a microstrip impedance transformer coupled to said shaped ground plate;
- and
- a splitter comprising a first end coupled to said microstrip impedance transformer and a second end coupled to said first helical element and said second helical element.
A coaxial helical antenna for capturing an electromagnetic wave comprising:
- a first helical antenna comprising a first helical element formed as a helix comprising a first diameter and a center cavity;
- a second helical antenna comprising a second element formed as a helix comprising a second diameter, wherein said second diameter is less than said first diameter and said second helical antenna is seated within said center cavity of said first helical antenna;
- a shaped ground plate coupled to said first helical antenna and said second helical antenna;
- a first microstrip impedance transformer coupled to said shaped ground plate and said first helical antenna;
- a second microstrip impedance transformer coupled to said shaped ground plate and said second helical antenna;
- and
- a switch comprising a first end coupled to said microstrip impedance transformer and a second end coupled to said first helical element and said second helical element.
Dependencies are inferred from the claim text.