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US 7,453,402 B2Granted
Miniature balanced antenna with differential feed
AssigneeHong Kong Applied Science and Research Institute Co., Ltd.
InventorsCorbett Rowell, Chi Lun Mak
Life of this patent
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Abstract
An example antenna system includes a parasitic element and a symmetrical element fed by a balanced RF signal source. The fed element is operable to couple with the parasitic element, thereby causing the parasitic element to resonate at a first frequency band. Thus, the fed element is operable to act as a balanced capacitive feed for the parasitic element. Also, the parasitic element is symmetrical with respect to a polarity of the fed element.
Claims15
An antenna system comprising:
- a parasitic element;
- and
- a balanced element fed by a differential radio frequency (RF) source, said balanced fed element operable to capacitively couple with said parasitic element, thereby causing said parasitic element to resonate at a first frequency band, said parasitic element symmetrical with respect to an axis drawn between positive and negative sides of said balanced fed element;
- wherein a shape of said parasitic element conforms to a shape of said balanced fed element in at least a length and a width dimension, and said parasitic element is configured in an “M” shape.
1 more element
Dependencies are inferred from the claim text.