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US 2002/0171593 A1Published application
2-Frequency antenna
AssigneeNippon Antena Kabushiki Kaisha
InventorsMasashi Wakui, Hiroshi Shimizu
Life of this patent
Estimating the term…
Abstract
An umbrella-shaped crown section 5a is provided on the front end of a linear element section 5b. The front end of the umbrella-shaped crown section 5a and the power supply section 6a at the lower end of the element section 5b are connected by means of a folded element 5c. Thereby, the dual-frequency antenna 5 is able to operate in two different frequency bands.
Claims5
A dual-frequency antenna characterized by comprising:
- a linear element section;
- a crown section provided at the front end of said element section and having a downwardly inclined umbrella-shape;
- a matching stub for shorting an intermediate portion of said element section to earth;
- and
- a folded element which connects the power supply point of said element with the front end of said crown section;
- and characterized in that said antenna operates in two frequency bands.
3 more elements
Dependencies are inferred from the claim text.