Compact ultra wide band antenna for transmission and reception of radio waves
AssigneeThe Secretary of State for Defence
InventorsNathan Clow, Ivor Leslie Morrow
Life of this patent
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Abstract
A stacked disk loaded antenna (80) that uses a dual double tuned impedance matching networks to broadband match the radiation resistance to a 50Ω port. Using two antenna elements (31, 64) in a stacked construction results in the antenna effectively combining the bandwidth ranges of both the antenna elements and removes the requirement for external tuning, which will add weight to an antenna structure. The stacked antenna system can be employed within communication systems operating within the HF and UHF bands.
Claims19
An antenna arrangement comprising a ground plane, a coaxial feed and a first antenna element, wherein the first antenna element comprises, a top loaded structure, an elongate TEM transmission line at least a portion of which is positioned at a predetermined distance from the ground plane and a conductive core extending from the coaxial feed and electrically connected to the TEM transmission line.
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Dependencies are inferred from the claim text.