US 2003/0112185 A1Published application

Planar inverted-F antenna

AssigneeIndustrial Technology Research Institute

InventorsShyh-Tirng Fang, Shih-Huang Yeh, Kin-Lu Wong

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Abstract

A planar inverted-F antenna with a first operating bandwidth and a second operating bandwidth comprises a ground surface, a radiating device, a shorting device, a dielectric material, and a feeding device. The dielectric material is for isolating the radiating device from the ground surface. The feeding device is for transmitting a microwave signal. The radiating device further includes a first radiating element, a second radiating element, and a third radiating element. The first operating bandwidth is formed by the first resonance mode of the first radiating element and the second radiating element. The second operating bandwidth is formed by the second resonance mode of the first radiating element and the second radiating element and the first resonance mode of the third radiating element.

Claims26

Dependent claims

A planar inverted-F antenna (PIFA), wherein the planar inverted-F antenna has a first operating bandwidth and a second operating bandwidth, comprising:

a ground surface;
a radiating device coupled to the ground surface through a shorting device, comprising:
a first radiating element, wherein the first radiating element has a first resonance mode and a second resonance mode;
a second radiating element, wherein the second radiating element has a first resonance mode and a second resonance mode;
and
a third radiating element, wherein the third radiating element has a first resonance mode;
wherein the first operating bandwidth is formed by the first resonance mode of the first radiating element and the first resonance mode of the second radiating element and the second operating bandwidth is formed by the second resonance mode of the first radiating element, the second resonance mode of the second radiating element, and the first resonance mode of the third radiating element;
a dielectric material set between the radiating device and the ground surface for isolating the radiating device from the ground surface;
and
a feeding device set on the ground surface and coupled to the radiating device for transmitting a microwave signal.

7 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/183,543Filed 28 Jun 2002
Priority: TW 9013145719 Dec 2001
Published: 19 Jun 2003
Term ends: Not estimatedThe source records don’t support an estimate.

Classification5 codes

H01Q 9/0442
Substantially flat resonant element parallel to ground plane, e.g. patch antenna: with particular tuning means
H01Q 1/243
Specially adapted for hand-held use: with built-in antennas
H01Q 5/364
Using a single feed point: creating multiple current paths
H01Q 9/0421
Substantially flat resonant element parallel to ground plane, e.g. patch antenna: with a shorting wall or a shorting pin at one end of the element