US 8,044,877 B2Granted

Antenna

AssigneeCheng Uei Precision Industry Co., Ltd.

InventorsChao-Chun Wang, Hui-Ling Lan, Jung-Kun Hsieh

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Abstract

An antenna includes a substrate having a first layer, a second layer, a third layer and a fourth layer, and an antenna unit having a first pattern being of a substantially coiled shape and printed on the first layer, a second pattern being of a meandering shaped and printed on the second layer, a third pattern being of a meandering shaped and printed on a third layer, and a fourth pattern being of a substantially coiled shaped and printed on the fourth layer. The first pattern, the second pattern, the third pattern and the fourth pattern are of a serial connection. The free end of the first pattern connects a feeding point. The free end of the fourth pattern connects a grounding point. Thus, the antenna has advantages of compact size and low cost, due to the antenna unit printed on the substrate and the pattern of the antenna unit.

Claims19

Dependent claims

An antenna, comprising:

a printed circuit board comprising:
a plurality of layers including a top layer, a first inner layer disposed below the top layer, a second inner layer disposed below the first inner layer, a bottom layer disposed below the second inner layer;
and
a plurality of dielectric layers each disposed between two of the adjacent of the plurality of the layers;
an antenna unit comprising:
a first pattern printed on the top layer and being of a substantially coiled shape;
a second pattern printed on the first inner layer and being of a meandering shape;
a third pattern printed on the second inner layer and being of a meandering shape;
a fourth pattern printed on the bottom layer and being of a substantially coiled shape;
a feeding point disposed on the top layer and connected to one end of the first pattern;
a first conducting through hole penetrated the dielectric layer disposed between the top layer and the first inner layer, and electronically interconnecting the other end of the first pattern and one end of the second pattern;
a second conducting through hole penetrated the dielectric layer disposed between the first inner layer and the second inner layer, and electronically interconnecting the other end of the second pattern and one end of the third pattern;
a third conducting through hole penetrated the dielectric layer disposed between the second inner layer and the bottom layer, and electronically interconnecting the other end of the third pattern and one end of the fourth pattern;
and
a grounding point disposed on the bottom layer and connected to the other end of the fourth pattern.

12 more elements

An antenna, comprising:

a substrate comprising a first layer, a second layer disposed below the first layer, a third layer disposed below the second layer, a fourth layer disposed below the third layer, a first dielectric layer disposed between the first layer and the second layer, a second dielectric layer disposed between the second layer and the third layer and a third dielectric layer disposed between the third layer and fourth layer;
a first conducting pattern being of a substantially coiled shape and printed on the first layer;
a second conducting pattern being of a meandering shape and printed on the first inner layer;
a third conducting pattern being of a meandering shape and printed on the second inner layer;
a fourth conducting pattern being of a substantially coiled shape and printed on the bottom layer;
a feeding point connected to one end of the first conducting pattern;
a first conducting through hole penetrated the first dielectric layer and electronically interconnecting the other end of the first conducting pattern and one end of the second conducting pattern;
a second conducting through hole penetrated the second dielectric layer and electronically interconnecting the other end of the second conducting pattern and one end of the third conducting pattern;
a third conducting through hole penetrated the third dielectric layer and electronically interconnecting the other end of the third conducting pattern and one end of the fourth conducting pattern;
and
a grounding point connected to the other end of the fourth conducting pattern.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 12/453,570Filed 15 May 2009
Published: US 2010/0289719 A118 Nov 2010
Granted: 25 Oct 2011
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

H01Q 1/38
Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith: formed by a conductive layer on an…
H01Q 9/27
With folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength: spiral antennas
H01Q 9/42
With feed to end of elongated active element, e.g. unipole: with folded element, the folded parts being spaced apart a small fraction of the…
H01Q
Antennas, i.e. radio aerials