Planar dual polarization antenna and complex antenna

Patent metadata

Field	Value
Publication number	US-9972899-B2
Application number	US-201514824053-A
Country	US
Kind code	B2
Filing date	Aug 11, 2015
Priority date	Nov 5, 2014
Publication date	May 15, 2018
Grant date	May 15, 2018

Abstract

A planar dual polarization antenna for receiving and transmitting radio signals includes an upper patch plate and a metal grounding plate with a width along a first direction and a length along a second direction. A shape of the upper patch plate has a first symmetry axis along the first direction and a second symmetry axis along the second direction. The first symmetry axis divides the upper patch plate into a first section and a third section. The second symmetry axis divides the upper patch plate into a second section and a fourth section. A first geometry center of the first section and the symmetry center are separated by a first distance, and a second geometry center of the second section and the symmetry center are separated by a second distance unequal to the first distance.

First claim

What is claimed is:

1. A planar dual polarization antenna for receiving and transmitting radio signals, comprising:
a metal grounding plate having a width along a first direction and a length along a second direction; and
an upper patch plate, wherein a shape of the upper patch plate has a first symmetry axis along the first direction and a second symmetry axis along the second direction, the first symmetry axis divides the upper patch plate into a first section and a third section, and the second symmetry axis divides the upper patch plate into a second section and a fourth section;
wherein a symmetry center of the shape is aligned to a center point of the metal grounding plate, a first geometry center of the first section and the symmetry center are separated by a first distance, and a second geometry center of the second section and the symmetry center are separated by a second distance unequal to the first distance.

2. The planar dual polarization antenna of claim 1 , wherein the length of the metal grounding plate is not equal to the width of the metal grounding plate to adjust beamwidth.

3. The planar dual polarization antenna of claim 1 , wherein the shape satisfies:

Wmax
Ax

=

Lmax
Ay

=
D

,

wherein Wmax and Ax denote a maximum width of the shape along the first direction and a first ratio value respectively, Lmax and Ay denote a maximum length of the shape along the second direction and a second ratio value respectively, D denote a reference dimension corresponding to resonance bandwidth of the upper patch plate, the first ratio value and the second ratio value are related to the extent to which the maximum width and the maximum length are adjusted with respect to the reference dimension according to the width and the length of the metal grounding plate respectively.

4. The planar dual polarization antenna of claim 1 , wherein the shape of the upper patch plate is formed by overlapping a cross section and a quadrilateral section or formed from a cross section.

5. The planar dual polarization antenna of claim 4 , wherein the quadrilateral section comprises a plurality of protrusion portions or a plurality of notches.

6. The planar dual polarization antenna of claim 1 , further comprising:
a feeding transmission line layer comprising a first feeding transmission line and a second feeding transmission line, the first feeding transmission line and the second feeding transmission line are symmetric;
a first dielectric layer disposed between the feeding transmission line layer and the metal grounding plate;
a second dielectric layer disposed on the metal grounding plate; and
a lower patch plate disposed between the second dielectric layer and the upper patch plate.

7. The planar dual polarization antenna of claim 6 , wherein the metal grounding plate comprises a first slot and a second slot, the first slot and the second slot are symmetric, the first slot and the first feeding transmission line generate coupling effects, the second slot and the second feeding transmission line generate coupling effects to increase bandwidth of the planar dual polarization antenna.

8. The planar dual polarization antenna of claim 6 , wherein the shape of the lower patch plate is formed by overlapping a cross section and a quadrilateral section or formed from a cross section.

9. The planar dual polarization antenna of claim 1 , wherein the first distance DIS_U satisfies:

DIS_U
=

∫
0
∞

⁢

∫

-
∞

∞

⁢

f
⁡

(

x
,
y

)

⁢
y
⁢

∂
x

⁢

∂
y

⁢

∫
0
∞

⁢

∫

-
∞

∞

⁢

f
⁡

(

x
,
y

)

⁢

∂
x

⁢

∂
y

,

the second distance DIS_R satisfies:

DIS_R
=

∫

-
∞

∞

⁢

∫
0
∞

⁢

f
⁡

(

x
,
y

)

Assignees

• Wistron Neweb Corp

Inventors

• Jan Cheng-Geng
• Hsu Chieh-Sheng

Classifications

• H01Q9/0435

  using two feed points · CPC title

• H01Q1/38 Primary

  formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface  H01Q15/142)} · CPC title

• H01Q9/0414

  in a stacked or folded configuration · CPC title

• H01Q21/08

  the units being spaced along or adjacent to a rectilinear path {(waveguide fed H01Q21/0037)} · CPC title

• H01Q21/0075

  Stripline fed arrays (H01Q21/065 takes precedence) · CPC title