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US 11,276,936 B1Granted
Efficient frequency agile tactical HF antenna
AssigneeRockwell Collins, Inc.
InventorDavid W. Cripe
Life of this patent
Estimating the term…
Abstract
A half-rhombic antenna includes an addressable switch at the apex. The addressable switch is opened or closed base on the operating frequency of the antenna. The addressable switch is open when operating at odd multiples of the lowest frequency and closed when operating at even multiples of the lowest frequency. The feedpoint includes a tuning element to adjust impedance within a range defined by the operating range of the switched antenna.
Claims15
An antenna comprising:
- a feedpoint element;
- a wire element connected to the feedpoint element;
- a mast configured to elevate the wire element to form a half-rhombic antenna structure;
- and
- an addressable switch connected to the wire element, disposed at an apex of the half-rhombic antenna structure,
- wherein:
- the addressable switch is connected to the feedpoint element;
- and
- the feedpoint element is configured to open or close the addressable switch based on an operating frequency of the antenna with respect to a lowest frequency of the antenna.
6 more elements
A communication system comprising:
- an antenna comprising:
- a feedpoint element;
- a wire element connected to the feedpoint element;
- a mast configured to elevate the wire element to form a half-rhombic antenna structure;
- and
- an addressable switch connected to the wire element, disposed at an apex of the half-rhombic antenna structure,
- wherein:
- the addressable switch is connected to the feedpoint element;
- and
- the feedpoint element is configured to open or close the addressable switch based on an operating frequency of the antenna with respect to a lowest frequency of the antenna.
7 more elements
Dependencies are inferred from the claim text.