Antenna for generating arbitrarily directed Bessel beam

Patent metadata

Field	Value
Publication number	US-10644398-B2
Application number	US-201815959305-A
Country	US
Kind code	B2
Filing date	Apr 23, 2018
Priority date	Jul 28, 2017
Publication date	May 5, 2020
Grant date	May 5, 2020

Abstract

An antenna for generating an arbitrarily directed Bessel beam, including a beam-forming plane and a feeding horn, the beam-forming plane is a dual-layer dielectric substrate structure having a beam focusing function, including: a printed circuit bottom layer, a high-frequency dielectric substrate lower layer, a printed circuit middle layer, a high-frequency dielectric substrate upper layer, and, a printed circuit upper layer; the printed circuit bottom layer, the high-frequency dielectric substrate lower layer, the printed circuit middle layer, the high-frequency dielectric substrate upper layer, and the printed circuit upper layer are co-axially stacked from the bottom to the top: the beam-forming plane is entirely divided into periodically arranged beam-forming units by a plurality of meshes, and each beam-forming unit consists of printed circuit upper, middle and lower metal patches of which centers are on the same longitudinal axis, the high-frequency dielectric substrate lower layer and the high-frequency dielectric substrate upper layer.

First claim

The invention claimed is:

1. An antenna for generating an arbitrarily directed Bessel beam, comprising:
a beam-forming plane and a feeding horn; wherein, the feeding horn faces a center of the beam-forming plane; the beam-forming plane is a dual-layer dielectric substrate structure having a beam focusing function; the beam-forming plane comprises a printed circuit bottom layer, a high-frequency dielectric substrate lower layer, a printed circuit middle layer, a high-frequency dielectric substrate upper layer, and a printed circuit upper layer; the printed circuit bottom layer, the high-frequency dielectric substrate lower layer, the printed circuit middle layer, the high-frequency dielectric substrate upper layer, and the printed circuit upper layer are co-axially stacked from the bottom to the top: the beam-forming plane is divided into periodically arranged beam-forming units by a plurality of meshes, and each beam-forming unit is comprised of a printed circuit upper metal patch, a printed circuit middle metal patch, a printed circuit lower metal patch, the high-frequency dielectric substrate lower layer and the high-frequency dielectric substrate upper layer; centers of the printed circuit upper metal patch, the printed circuit middle metal patch, and the printed circuit lower metal patch are on a same longitudinal axis; the beam-forming unit is a basic unit having a function of electromagnetic wave phase shifting.

2. The antenna for generating an arbitrarily-directed Bessel beam according to claim 1 , wherein an ideal phase shift amount φ(f) of the beam-forming unit on the beam-forming plane is calculated by formulas (1) to (4):

φ
1

⁡

(
f
)

=

2
⁢
π
⁢

f
c

⁡

[

d
2

+

r
2

-
d
+

(

-
r

)

×

(

l
⁢

⁢
cos
⁢

⁢
θ

-
R

)

l
2

+

R
2

-

2
⁢
lR
⁢

⁢
cos
⁢

⁢
θ

]

(
1
)

r
s

=

l
⁢

⁢
cos
⁢

⁢
θ

R

⁢
r

(
2
)

φ
2

⁡

(
f
)

=

2
⁢
π
⁢

f
c

⁡

[

(

Assignees

• Univ Electronic Sci & Tech China

Inventors

• Cheng Yujian
• Zhong Yichen
• He Renbo
• Liu Yan
• Fan Yong
• Song Kaijun
• Zhang Bo
• Lin Xianqi
• Zhang Yonghong

Classifications

• H01Q3/14

  for varying the relative position of primary active element and a refracting or diffracting device · CPC title

• H01Q15/02 Primary

  Refracting or diffracting devices, e.g. lens, prism · CPC title

• H01Q13/02

  Waveguide horns · CPC title

• H01Q15/08

  formed of solid dielectric material · CPC title

• H01Q19/06

  using refracting or diffracting devices, e.g. lens {(radome H01Q1/42)} · CPC title