KR101871872B1 - Switchable Co-planar Patch Antennas based Focal Plane Array for High Resolution - Google Patents

Switchable Co-planar Patch Antennas based Focal Plane Array for High Resolution Download PDF

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Publication number
KR101871872B1
KR101871872B1 KR1020170020875A KR20170020875A KR101871872B1 KR 101871872 B1 KR101871872 B1 KR 101871872B1 KR 1020170020875 A KR1020170020875 A KR 1020170020875A KR 20170020875 A KR20170020875 A KR 20170020875A KR 101871872 B1 KR101871872 B1 KR 101871872B1
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KR
South Korea
Prior art keywords
antenna
patch
patch antenna
driven
focal plane
Prior art date
Application number
KR1020170020875A
Other languages
Korean (ko)
Inventor
이상국
이브라힘 와식 칸 무하마드
최경식
박대웅
Original Assignee
한국과학기술원
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Publication date
Application filed by 한국과학기술원 filed Critical 한국과학기술원
Priority to KR1020170020875A priority Critical patent/KR101871872B1/en
Application granted granted Critical
Publication of KR101871872B1 publication Critical patent/KR101871872B1/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
    • H01Q9/04—Resonant antennas
    • H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna

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  • Waveguide Aerials (AREA)

Abstract

The present invention provides a focal plane array-based coplanar on-off patch antenna for high resolution terahertz imaging which connects a patch antenna located around the driven patch antenna to a ground, thereby preventing mutual coupling from occurring even when an interval of the patch antenna is arranged below a wavelength. The focal plane array-based coplanar on-off patch antenna for high resolution terahertz imaging comprises: N patch antennas located on the same plane; and a control part grounding the antenna located around the driven one antenna, when driving one antenna among the patch antennas.

Description

[0001] The present invention relates to a coplanar on-off patch antenna based on focal plane arrays for high resolution terahertz imaging,

The present invention relates to a focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging capable of preventing the occurrence of mutual interference.

In the conventional plane on-off patch antenna array, mutual coupling occurs when the spacing between the patch antennas is arranged to be equal to or less than the wavelength (?). Accordingly, the conventional plane on-off patch antenna array has a problem that resolution is very low due to mutual interference.

The present invention relates to a high-resolution terahertz imaging system capable of preventing the occurrence of mutual coupling even when the patch antennas are disposed with a gap of less than a wavelength by connecting a patch antenna disposed around the driven patch antenna to the ground Planar array-based coplanar on-off patch antenna.

Other objects and advantages of the present invention will become apparent from the following description, and it will be understood by those skilled in the art that the present invention is not limited thereto. It will also be readily apparent that the objects and advantages of the invention may be realized and attained by means of the instrumentalities and combinations particularly pointed out in the appended claims.

In order to solve the above-described problems, a focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging, which is one embodiment of the present invention, includes N patch antennas disposed on the same plane, And a control unit for grounding the antenna located around the driven one antenna when driving the antenna.

The control unit sequentially drives the first patch antenna to the Nth patch antenna, and grounds the antenna located around the driven one antenna.

The N patch antennas may be arranged on the same plane at intervals of less than a wavelength.

The focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging further includes a ground plate, and the N patch antennas can be disposed on the ground.

According to this embodiment, the patch antenna disposed around the driven patch antenna is not connected to the ground so that the mutual coupling can be prevented even if the spacing between the patch antennas is less than the wavelength have.

In addition, a high-resolution terahertz image can be obtained which avoids mutual coupling even if the spacing between the patch antennas is arranged to be less than the wavelength.

1 is a view for explaining a focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging according to an embodiment of the present invention.
2 is a view for explaining a method of driving an antenna according to an embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. The embodiments of the present invention can be modified in various forms, and the scope of the present invention should not be construed as being limited to the embodiments described below. The embodiments are provided to explain the present invention to a person having ordinary skill in the art to which the present invention belongs.

1 is a view for explaining a focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging according to an embodiment of the present invention.

Referring to FIG. 1, a focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging may include a ground plate 100 and N patch antennas 110-121.

The N patch antennas 110 - 121 may be disposed on the ground plate 100.

The N patch antennas 110 - 121 may be disposed on the same plane, and may be disposed at intervals of less than a wavelength.

When the controller 130 drives one of the patch antennas, the control unit 130 may ground the antenna located around the driven one of the antennas. When the antenna located at the periphery is grounded, the antenna located at the periphery is not driven. That is, in the same time zone, only one antenna is driven, and the peripheral antenna is grounded and not driven.

For example, the control unit 130 may sequentially drive the first patch antenna 110 to the N-th patch antenna 121, and ground the antenna disposed around the driven one antenna. A detailed description thereof will be specifically described with reference to FIG. 2 below.

The antenna according to the present embodiment can prevent the patch antenna disposed around the driven patch antenna from being connected to the ground so that the patch antenna disposed around the patch antenna is driven, Thereby avoiding mutual coupling.

In addition, the antennas according to the present embodiment prevent mutual coupling even if the intervals between the patch antennas are arranged to be equal to or less than the wavelength, so that a high-resolution terahertz image can be obtained.

2 is a view for explaining a method of driving an antenna according to an embodiment of the present invention.

Referring to FIGS. 1 and 2, the controller 130 may sequentially drive the first patch antenna 110 to the N-th patch antenna 121.

For example, the control unit 130 may drive the first patch antenna 110. [ At this time, the controller 130 grounds the second patch antenna 111, the fifth patch antenna 114, and the sixth patch antenna 115 on the periphery of the first patch antenna 110, do.

The control unit 130 can drive the sixth patch antenna 115. [ The control unit 130 controls the first patch antenna 110, the second patch antenna 111, the third patch antenna 112, the fifth patch antenna 114, The seventh patch antenna 116, the ninth patch antenna 118, the tenth patch antenna 119, and the eleventh patch antenna 120 are grounded so as not to be driven.

The control unit 130 can drive the twelfth patch antenna 121. [ At this time, the control unit 130 grounds the seventh patch antenna 116, the eighth patch antenna 117, and the eleventh patch antenna 120 on the periphery of the twelfth patch antenna 121, .

The controller 130 sequentially drives one patch antenna among the N patch antennas in the same manner as described above, and controls the patch antenna that is around the driven patch antenna to be grounded and not driven.

The embodiments described may be constructed by selectively combining all or a part of each embodiment so that various modifications can be made.

It should also be noted that the embodiments are for explanation purposes only, and not for the purpose of limitation. In addition, it will be understood by those of ordinary skill in the art that various embodiments are possible within the scope of the technical idea of the present invention.

100: Ground plate
110 - 121: patch antenna
130:

Claims (4)

Wherein the patch antennas are spaced apart from each other by a wavelength or less and are arranged on the same plane, and the N patch antennas; And
When one of the patch antennas is driven, all the antennas located around the driven one antenna are grounded and controlled so that only one currently driven antenna is driven, and one currently driven antenna And a control section for preventing mutual coupling which may be caused by the patch antennas disposed in the periphery even if the spacing between the patch antennas is arranged to be equal to or less than the wavelength, Focal Plane Array Based Coplanar On - Off Patch Antenna for Imaging.
The method according to claim 1,
Wherein,
A focal plane array based coplanar on-off patch for high resolution terahertz imaging, which drives the first patch antenna to the Nth patch antenna sequentially and controls the antenna located around the driven antenna to be grounded, antenna.
delete The method according to claim 1,
Further comprising a ground plate,
Wherein the N patch antennas are disposed on the ground plane, the focal plane array based coplanar on-off patch antenna for high resolution terahertz imaging.
KR1020170020875A 2017-02-16 2017-02-16 Switchable Co-planar Patch Antennas based Focal Plane Array for High Resolution KR101871872B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
KR1020170020875A KR101871872B1 (en) 2017-02-16 2017-02-16 Switchable Co-planar Patch Antennas based Focal Plane Array for High Resolution

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020170020875A KR101871872B1 (en) 2017-02-16 2017-02-16 Switchable Co-planar Patch Antennas based Focal Plane Array for High Resolution

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KR101871872B1 true KR101871872B1 (en) 2018-06-28

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KR1020170020875A KR101871872B1 (en) 2017-02-16 2017-02-16 Switchable Co-planar Patch Antennas based Focal Plane Array for High Resolution

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130130702A (en) * 2010-10-21 2013-12-02 로카타 코퍼레이션 피티와이 리미티드 Method and apparatus for forming a remote beam
KR101541827B1 (en) * 2014-05-28 2015-08-04 한국과학기술원 Antenna module for transmitting or receiving terahertz waves and focal plane array structure for real-time terahertz imaging
KR101551567B1 (en) * 2014-03-12 2015-09-10 한국과학기술원 Method and System for Multi-band, dual-polarization, dual beam-switched antenna for small cell base station

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20130130702A (en) * 2010-10-21 2013-12-02 로카타 코퍼레이션 피티와이 리미티드 Method and apparatus for forming a remote beam
KR101551567B1 (en) * 2014-03-12 2015-09-10 한국과학기술원 Method and System for Multi-band, dual-polarization, dual beam-switched antenna for small cell base station
KR101541827B1 (en) * 2014-05-28 2015-08-04 한국과학기술원 Antenna module for transmitting or receiving terahertz waves and focal plane array structure for real-time terahertz imaging

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