Planar inverted-F antenna
AssigneeHon Hai Precision Industry Co., Ltd.
InventorChia-Hao Mei
Life of this patent
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Abstract
A planar inverted-F antenna includes a body (300), a feed wire (400), a shorting strip (500), and a metallic ground plane (200). The body is used for radiating and receiving radio frequency signals, and includes a radiating end (310) and a shorting end (320). The shorting end is electrically connected to a metallic ground plane by the shorting strip. The feed wire is electrically connected to the body. The body includes bent portions (330, 340) disposed between the shorting end and the radiating end. Due to the bent portions, the planar inverted-F antenna has a compact profile and a smaller size. In addition, the bent portions generate an inductance effect that can regulate the input impedance of the planar inverted-F antenna.
Claims18
A planar inverted-F antenna, comprising:
- a body printed on a substrate, for radiating and receiving radio frequency signals, the body comprising a radiating end, a shorting end, and a bent portion for reducing a profile of the planar inverter-F antenna and generating an inductance effect to regulate an input impedance of the planar inverter-F antenna;
- a feed wire electrically connected to the body;
- and
- a shorting strip with one end electrically connected to the shorting end of the body, and the other end being grounded;
- wherein the bent portion is disposed between the feed wire and the shorting end.
An antenna comprising:
- a body of said antenna printed on a substrate, extending along a predetermined direction with a predetermined length, and defining one end thereof to radiate signals and the other end thereof being grounded, at least one portion of said body extending along said predetermined direction for a length less than said predetermined length, said at least one portion of said body comprising more than one sub-portion distributed therein and significantly thinner than other portions of said body;
- and
- a feeding wire electrically connecting with said body to collect said signals;
- wherein said at least one portion of said body is disposed between said other end of said body and said feeding wire for reducing a profile of said antenna and generating an inductance effect to regulate an input impedance of said antenna.
A method to manufacture an antenna, comprising the steps of:
- preparing a substrate;
- printing a body of an antenna onto said substrate by characterizing said body as an electrically conductive extension between a radiating end thereof and a ground end thereof along a predetermined direction with a predetermined length;
- electrically connecting said body with a feeding wire for signal collection and a ground plane for being grounded at said ground end;
- and
- forming at least one portion of said body disposed between said feeding wire and said ground end and having a length thereof less than said predetermined length to define more than one sub-portion therein continuously extending along another direction different from said predetermined direction to reduce a profile of said antenna and generate an inductance effect to regulate an input impedance of said antenna.
Dependencies are inferred from the claim text.