High-gain wideband antenna apparatus

• US 9,246,231 B2
• Filed: 01/22/2013
• Issued: 01/26/2016
• Est. Priority Date: 02/27/2012
• Status: Expired due to Fees

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: Ju, JeongHo
• Primary Examiner(s): Ho, Tan
• Application Number:
  US13/746,384
• Publication Number:
  US 20130222200A1
• Time in Patent Office: 1,099 Days
• Field of Search: 343/700.MS, 343/872, 343/833, 343/909
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/425 comprising a metallic grid
• CPC Class Codes: H01Q 15/0013 said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
• CPC Class Codes: H01Q 15/0053 Selective devices used as spatial filter or angular sidelobe filter
• CPC Class Codes: H01Q 15/02 Refracting or diffracting devices, e.g. lens, prism

Abstract

Disclosed is a high-gain wideband antenna apparatus. The high-gain wideband antenna apparatus, includes: a feeding antenna configured to radiate a signal; a cover configured to be disposed on a front surface of the feeding antenna based on a radiation direction of the signal and including a conductor pattern formed in a specific shape; and a ground surface configured to be disposed on the feeding antenna based on the radiation direction of the signal. By this configuration, the conductor patterns are approximately configured on both surfaces of a dielectric material to control a phase of a reflection coefficient in a specific frequency band, thereby increasing a gain and a bandwidth of an antenna and metal surfaces are additionally mounted on sides of a feeding antenna, thereby improving a front back ratio of the antenna.

Claims

1. A high-gain wideband antenna apparatus, comprising:

a feeding antenna configured to radiate a signal;

a cover configured to be disposed on a front surface of the feeding antenna based on a radiation direction of the signal and including conductor patterns formed on top and bottom surfaces of a dielectric substrate constituting the cover; and

a ground surface configured to be disposed on a rear surface of the feeding antenna based on the radiation direction of the signal,

wherein a thickness of the dielectric substrate is determined according to at least one of a bandwidth of a target frequency band, a magnitude of a reflection coefficient and a phase of the reflection coefficient.

2. The high-gain wideband antenna apparatus of claim 1, wherein the conductor patterns are each formed in different shapes.

3. The high-gain wideband antenna apparatus of claim 1, wherein the conductor patterns are formed by repeatedly arranging preset unit cells.

4. The high-gain wideband antenna apparatus of claim 3, wherein the conductor patterns are formed by non-uniformly arranging the sizes of the unit cells.

5. The high-gain wideband antenna apparatus of claim 1, further comprising:

metal wall surfaces disposed at sides of the feeding antenna based on a radiation direction of the signal.

6. A high-gain wideband antenna apparatus, comprising:

a feeding antenna configured to radiate a signal; and

covers each disposed on front and back surfaces of the feeding antenna based on a radiation direction of the signal and each including conductor patterns formed on top and bottom surfaces of a dielectric substrate constituting the cover,

wherein a thickness of the dielectric substrate is determined according to at least one of a bandwidth of a target frequency band, a magnitude of a reflection coefficient and a phase of the reflection coefficient.

7. The high-gain wideband antenna apparatus of claim 6, wherein the conductor patterns are each formed in different shapes.

8. The high-gain wideband antenna apparatus of claim 6, wherein the conductor patterns are formed by repeatedly arranging preset unit cells.

9. The high-gain wideband antenna apparatus of claim 8, wherein the conductor patterns are formed by non-uniformly arranging the sizes of the unit cells.

10. The high-gain wideband antenna apparatus of claim 6, further comprising:

metal wall surfaces disposed at sides of the feeding antenna based on a radiation direction of the signal.

11. A high-gain wideband antenna apparatus, comprising:

a cylindrical cover configured to include conductor patterns formed on inner and outer surfaces of a cylindrical dielectric substrate constituting the cylindrical cover; and

a feeding antenna configured to be disposed in the cylindrical cover and radiate a signal toward the conductor patterns,

wherein a thickness of the cylindrical dielectric substrate is determined according to at least one of a bandwidth of a target frequency band, a magnitude of a reflection coefficient and a phase of the reflection coefficient.

12. The high-gain wideband antenna apparatus of claim 11, wherein the conductor patterns are each formed in different shapes.

13. The high-gain wideband antenna apparatus of claim 11, wherein the conductor patterns are formed by repeatedly arranging preset unit cells.

14. The high-gain wideband antenna apparatus of claim 13, wherein the conductor patterns are formed by non-uniformly arranging the sizes of the unit cells.

15. A high-gain wideband antenna apparatus, comprising:

a cylindrical cover configured to include conductor patterns;

a plurality of feeding antennas configured to be each disposed in a plurality of areas partitioned in the cover to radiate a signal toward the conductor patterns; and

a ground surface configured to be positioned at a central area common to the plurality of areas.

16. The high-gain wideband antenna apparatus of claim 15, wherein the conductor patterns are each formed in different shapes on inner and outer surfaces of a cylindrical dielectric substrate configuring the cover.

17. The high-gain wideband antenna apparatus of claim 15, wherein the conductor patterns are formed by repeatedly arranging preset unit cells.

18. The high-gain wideband antenna apparatus of claim 17, wherein the conductor patterns are formed by non-uniformly arranging the sizes of the unit cells.

19. The high-gain wideband antenna apparatus of claim 15, wherein each of the plurality of feeding antennas is disposed between the cylindrical cover and the ground surface.