Wideband microstrip antennas and antenna arrays

Patent metadata

Field	Value
Publication number	US-10218082-B2
Application number	US-201414246261-A
Country	US
Kind code	B2
Filing date	Apr 7, 2014
Priority date	Aug 15, 2013
Publication date	Feb 26, 2019
Grant date	Feb 26, 2019

Abstract

There is provided a wideband patch antenna and an antenna array. The antenna includes a dielectric substrate of a rectangle shape, a radiation patch formed on a top surface of the dielectric substrate, a coupling patch formed on the top surface of the dielectric substrate and extending from a side of the dielectric substrate to a position from the radiation patch by a distance, a metal support arranged on the lower surface of the dielectric substrate and extending from the edge of the lower surface of the dielectric substrate downward to the ground, a layer of air having a predetermined thickness being formed between the lower surface of the dielectric substrate and the ground. According to the embodiments, it is possible to improve the directivity of the wideband microstrip antenna while maintaining its small size.

First claim

What is claimed is:

1. A wideband patch antenna comprising:
a dielectric substrate of a rectangle shape;
a radiation patch formed on a top surface of the dielectric substrate;
a coupling patch formed on the top surface of the dielectric substrate and extending from a side of the dielectric substrate to a position from the radiation patch by a distance; and
a metal support contacting edges of the lower surface of the dielectric substrate and extending perpendicularly from the lower surface of the dielectric substrate downward as a ground layer, a layer of air having a predetermined thickness being formed between the lower surface of the dielectric substrate and the metal support.

2. The wideband patch antenna according to claim 1 , wherein the metal support is made of copper.

3. The wideband patch antenna according to claim 1 , wherein the layer of air has a thickness in the range from 0.5 mm to 3.0 mm.

4. The wideband patch antenna according to claim 1 , wherein the distance is in the range from 0.4 mm to 0.5 mm.

5. The wideband patch antenna according to claim 1 , wherein the coupling patch has a length in the range from 1.5 mm to 2.5 mm, and a width in the range from 0.5 mm to 1.2 mm.

6. The wideband patch antenna according to claim 1 , wherein the radiation patch has a length in the range from 4.0 mm to 5.0 mm, and a width in the range from 2.0 mm to 3.0 mm.

7. The wideband patch antenna according to claim 1 , wherein the wideband patch antenna operates in the K-Ka band.

8. The wideband patch antenna according to claim 1 , further comprising a microstrip feeder connected to the coupling patch.

9. The wideband patch antenna according to claim 1 , wherein the metal support is a copper plate arranged on both sides of the dielectric substrate.

10. The wideband patch antenna according to claim 9 , wherein the copper plate has a width in the range from 0.4 mm to 0.6 mm.

11. An antenna array comprising a plurality of wideband patch antenna according to claim 1 that are arranged in a line.

12. An array antenna comprising:
a dielectric substrate of a rectangle shape;
a plurality of radiation patches arranged at intervals in the length direction of the dielectric substrate and formed on the top surface of the dielectric substrate;
a plurality of coupling patches arranged in correspondence to the plurality of radiation patches, each of which formed on the top surface of the dielectric substrate and extending from a side of the dielectric substrate to a position from a corresponding radiation patch by a distance and
a metal support contacting edges the lower surface of the dielectric substrate and extending perpendicularly from of the lower surface of the dielectric substrate downward as a ground layer, a layer of air having a predetermined thickness being formed between the lower surface of the dielectric substrate and the metal support.

Assignees

• Nuctech Co Ltd
• Univ Tsinghua

Inventors

• Zhao Ziran
• Chen Zhiqiang
• Li Yuanjing
• Wu Wanlong
• Liu Yinong
• Yang Jieqing
• Liu Wenguo
• Sang Bin
• Zheng Lei

Classifications

• H01Q21/065

  Patch antenna array · CPC title

• H01Q13/02

  Waveguide horns · CPC title

• G03H5/00

  Holographic processes or apparatus using particles or using waves other than those covered by groups G03H1/00 or G03H3/00 for obtaining holograms; Processes or apparatus for obtaining an optical image from them (G03H1/22 takes precedence; construction of electron microscopes H01J37/26; {investigating or analysing materials by the use of microwaves G01N22/00, by the use of particles wave or X-rays G01N23/00, G21K7/00}) · CPC title

• H01Q1/422 Primary

  comprising two or more layers of dielectric material (H01Q1/425 takes precedence) · CPC title

• H01Q21/0081

  using suspended striplines · CPC title