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US 6,208,306 B1Granted
Compact, broadband antennas based on folded, top-loaded broadband dipoles with high-pass tuning elements
AssigneeEMC Automation, Inc.
InventorsJames S. McLean, Gentry E. Crook
Life of this patent
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Abstract
A compact, electrically-small broadband antenna which combines a folded, top-loaded antenna geometry using broadband radiating elements with a series capacitance applied at the antenna feed is provided. The antenna can be used alone or in combination with a frequency-independent antenna such as a log-periodic dipole array. Additional antenna elements may also be included to improve the transition between the antenna and such a frequency-independent antenna. Similar performance may be obtained with either balanced or single-ended versions of the antenna
Claims22
An antenna, comprising:
- a first tapered feed element having a base and an opposing apex, wherein the apex is adapted for coupling to an antenna input signal;
- a first tapered shunting element having a base and an opposing apex, wherein the first shunting element is laterally displaced from and substantially parallel to the first feed element;
- and
- a first top-loading element arranged substantially perpendicular to the first feed and first shunting elements, wherein the first top-loading element is connected to the base of the first feed element and the base of the first shunting element, and wherein a portion of the first top-loading element extends outward from the first shunting element in a direction away from the first feed element.
1 more element
Dependencies are inferred from the claim text.