US 7,126,540 B2 · Dipole antenna

Abstract

A dipole antenna includes a board and a dipole element. The board includes a dielectric substrate. The dipole element resonates within a predetermined bandwidth, and includes a pair of bilaterally symmetrical radiating arms, each of which is formed on the dielectric substrate. The dipole antenna has a relatively high degree of omni-directivity.

Drawings

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Drawings

Claims12

Dependent claims

A dipole antenna comprising:

a board including a dielectric substrate;
and
a dipole element resonating within a predetermined bandwidth, said dipole element including pair of radiating arms, each of which is formed on said dielectric substrate,
wherein each of said radiating arms includes:
a first strip that extends in a first direction, said first strip of each of said radiating arms having first and second ends that are respectively proximate to and distal from the other one of said radiating arms, said first ends of said first strips being adapted to be coupled to a transmission line,
a second strip that extends in a second direction transverse to said first direction, said second strip of each of said radiating arms having a first end connected to said second end of said first strip of a respective one of said radiating arms, and a second end, and
a third strip that extends in the first direction, said third strip of each of said radiating arms having first and second ends that are respectively proximate to and distal from the other one of said radiating arms, said first end of said third strip being connected to said second end of said second strip,
wherein said dielectric substrate has a first surface, and a second surface opposite to said first surface in a third direction transverse to the first and second directions, said third strip of each of said radiating arms meandering between said first and second surfaces of said dielectric substrate through said dielectric substrate.

5 more elements

A dipole antenna within a predetermined bandwidth that ranges between 2.36 MHz to 2.63 MHz, said dipole antenna comprising:

a board including a dielectric substrate that has a dielectric constant, which ranges between 4.2 to 4.7;
and
a dipole element resonating within the predetermined bandwidth, said dipole element being formed on said dielectric substrate, and including a pair of radiating arms, each of which has a length less than a quarter wavelength,
wherein each of said radiating arms includes:
a first strip that extends in a first direction, said first strip of each of said radiating arms having first and second ends that are respectively proximate to and distal from the other one of said radiating arms, said first ends of said first strips being adapted to be coupled to a transmission line,
a second strip that extends in a second direction transverse to said first direction, said second strip of each of said radiating arms having a first end connected to said second end of said first strip of a respective one of said radiating arms, and a second end, and
a third strip that extends in the first direction, said third strip of each of said radiating arms having first and second ends that are respectively proximate to and distal from the other one of said radiating arms, said first end of said third strip being connected to said second end of said second strip,
wherein said dielectric substrate has a first surface, and a second surface opposite to said first surface in a third direction transverse to the first and second directions, said third strip of each of said radiating arms meandering between said first and second surfaces of said dielectric substrate through said dielectric substrate.

5 more elements

Dependencies are inferred from the claim text.

Description1,458 words

Summary136 words

#1. Field of the Invention

#The invention relates to an antenna, more particularly to a dipole antenna that is formed on a dielectric substrate.

#2. Description of the Related Art

Brief description of the drawings15 figures

#Other features and advantages of the present invention will become apparent in the following detailed description of the preferred embodiments with reference to the accompanying drawings, of which:

#FIG. 1 is a schematic view of the first preferred embodiment of a dipole antenna according to the present invention;

#FIG. 2 is a graph illustrating a voltage standing wave ratio (VSWR) of the first preferred embodiment;

Detailed description966 words

#Before the present invention is described in greater detail, it should be noted that like elements are denoted by the same reference numerals throughout the disclosure.

#Referring to FIG. 1, the first preferred embodiment of a dipole antenna according to this invention is shown to include a board 3 and a dipole element.

#The dipole antenna of this embodiment is implemented on a wireless network card that includes the board 3.

Facts

Application

10/999,929Filed 1 Dec 2004

Published

US 2006/0114167 A11 Jun 2006

Granted

24 Oct 2006

Term ended

7 Dec 2024

Estimated · how

20 years from earliest known nonprovisional domestic filing plus recorded patent term adjustment, including 6 days of adjustment. Maintenance-fee lapses, terminal disclaimers and statutory extensions have not been checked. The continuity chain may be incomplete; this is not an enforceability determination.

Classification3 codes

H01Q 9/265
With folded element or elements, the folded parts being spaced apart a small fraction of operating wavelength: open ring dipoles; Circular dipoles
H01Q 9/285
Conical, cylindrical, cage, strip, gauze, or like elements having an extended radiating surface; Elements comprising two conical surfaces having…:…
H01Q
Antennas, i.e. radio aerials

Dipole antenna

Life of this patent

Dipole antenna

Life of this patent

Life of this patent

Abstract

Drawings

Drawings

Claims12

Description1,458 words

Drawings

Classification3 codes

Life of this patent

Description1,458 words