MULTI-CHANNEL MIMO ANTENNA APPARATUS USING MONOPOLE OR DIPOLE ANTENNA

• US 20150194740A1
• Filed: 12/26/2014
• Published: 07/09/2015
• Est. Priority Date: 01/03/2014
• Status: Abandoned Application

• Current Assignee: Electronics and Telecommunications Research Institute
• Original Assignee: Electronics and Telecommunications Research Institute
• Inventors: JU, Jeong Ho
• Application Number:
  US14/583,285
• Publication Number:
  US 20150194740A1
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H01Q 1/521 reducing the coupling between adjacent antennas
• CPC Class Codes: H01Q 19/32 the primary active element being end-fed and elongated
• CPC Class Codes: H01Q 21/28 Combinations of substantially independent non-interacting antenna units or systems multiple beam H01Q25/00
• CPC Class Codes: H01Q 9/16 with feed intermediate between the extremities of the antenna, e.g. centre-fed dipole H01Q9/44 takes precedence
• CPC Class Codes: H01Q 9/30 with feed to end of elongated active element, e.g. unipole H01Q9/44 takes precedence

Abstract

A monopole MIMO antenna apparatus using a monopole antenna or dipole antenna is provided. The antenna apparatus may include a first antenna device disposed at a side of a ground surface, a second antenna device disposed at another side of the ground surface and at least one parasitic antenna device spaced apart from the first antenna device and the second antenna device by a predetermined distance between the first antenna device and the second antenna device.

Claims

1. An antenna apparatus, comprising:

a first antenna device disposed at a side of a ground surface;

a second antenna device disposed at another side of the ground surface; and

at least one parasitic antenna device spaced apart from the first antenna device and the second antenna device by a predetermined distance between the first antenna device and the second antenna device.

2. The antenna apparatus of claim 1, wherein the first antenna device and the second antenna device are power supply antennas, and the parasitic antenna device is a non-power supply antenna.

3. The antenna apparatus of claim 1, wherein the first antenna device and the second antenna device are disposed to be symmetrical with each other with respect to the parasitic antenna device.

4. The antenna apparatus of claim 1, wherein the first antenna device, the second antenna device, and the parasitic antenna device are monopole antennas or dipole antennas.

5. The antenna apparatus of claim 1, wherein the first antenna device, the second antenna device, and the parasitic antenna device have the same capability.

6. The antenna apparatus of claim 1, wherein lengths of the first antenna device, the second antenna device, and the parasitic antenna device are determined depending on a wavelength corresponding to a center frequency of an operation frequency band of the antenna devices.

7. The antenna apparatus of claim 6, wherein the lengths of the first antenna device, the second antenna device, and the parasitic antenna device correspond to ¼

of the wavelength corresponding to the center frequency.

8. The antenna apparatus of claim 1, wherein interference between the second antenna device and the first antenna device is canceled out by an induced current generated by a coupling between the first antenna device and the parasitic antenna device.

9. The antenna apparatus of claim 1, wherein the first antenna device and the second antenna device have a microstrip line and a via inserted therein.

10. An antenna apparatus, comprising:

two or more antenna devices; and

at least one parasitic antenna device spaced apart from the antenna devices between the antenna devices, wherein the antenna devices are disposed to be symmetrical with each other with respect to the parasitic antenna device.

11. The antenna apparatus of claim 10, wherein the antenna devices are power supply antennas, and the parasitic antenna device is a non-power supply antenna.

12. The antenna apparatus of claim 10, wherein the antenna devices are disposed to be symmetrical with each other with respect to the parasitic antenna device.

13. The antenna apparatus of claim 10, wherein the antenna devices and the parasitic antenna device are monopole antennas or dipole antennas.

14. The antenna apparatus of claim 10, wherein the antenna devices and the parasitic antenna device have the same capability.

15. The antenna apparatus of claim 10, wherein lengths of the antenna devices and the parasitic antenna device are determined depending on a wavelength corresponding to a center frequency of an operation frequency band of the antenna devices.

16. The antenna apparatus of claim 15, wherein the lengths of the antenna devices and the parasitic antenna device correspond to ¼

of the wavelength corresponding to the center frequency.

17. The antenna apparatus of claim 10, wherein interference between the antenna devices is canceled out by an induced current generated by a coupling between the antenna devices and the parasitic antenna device.

18. The antenna apparatus of claim 10, wherein the antenna devices have a microstrip line and a via inserted therein.