KR100222659B1 - Multi-purpose anechoic chamber for measuring antenna performance and emi/emc - Google Patents

Multi-purpose anechoic chamber for measuring antenna performance and emi/emc Download PDF

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Publication number
KR100222659B1
KR100222659B1 KR1019970038484A KR19970038484A KR100222659B1 KR 100222659 B1 KR100222659 B1 KR 100222659B1 KR 1019970038484 A KR1019970038484 A KR 1019970038484A KR 19970038484 A KR19970038484 A KR 19970038484A KR 100222659 B1 KR100222659 B1 KR 100222659B1
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South Korea
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electromagnetic
main body
electromagnetic interference
measurement
antenna
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KR1019970038484A
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Korean (ko)
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KR19990016062A (en
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범 권
이은기
강찬구
임종태
임철호
이종헌
이정수
김주완
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서정욱
에스케이 텔레콤주식회사
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/10—Radiation diagrams of antennas
    • G01R29/105—Radiation diagrams of antennas using anechoic chambers; Chambers or open field sites used therefor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q17/00—Devices for absorbing waves radiated from an antenna; Combinations of such devices with active antenna elements or systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/08—Measuring electromagnetic field characteristics
    • G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
    • G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
    • G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/12—Supports; Mounting means
    • H01Q1/1242—Rigid masts specially adapted for supporting an aerial
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/526—Electromagnetic shields
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
    • H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
    • H01Q3/04—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation
    • H01Q3/06—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole for varying one co-ordinate of the orientation over a restricted angle

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)

Abstract

1.청구범위에 기재된 발명이 속한 기술분야1. Technical field to which the invention described in the claims belongs

안테나 성능측정 및 전자파장해 측정 겸용 전자파 무반사실Combined antenna performance measurement and electromagnetic interference measurement

2.발명이 해결하려고 하는 기술적 과제2. Technical problem that the invention tries to solve

본 발명은 바닥면에 이동가능한 전파흡수체를 설치하여 필요에 따라 안테나 성능측정과 전자파장해 측정을 위한 환경을 조성할 수 있도록 한 안테나 성능측정 및 전자파장해 측정 겸용 전자파 무반사실을 제공함에 그 목적이 있다.An object of the present invention is to provide an electromagnetic anti-reflective chamber for both antenna performance measurement and electromagnetic interference measurement, which is provided with a movable wave absorber on the bottom surface to create an environment for antenna performance measurement and electromagnetic interference measurement, if necessary. .

3 발명의 해결방법의 요지3 Summary of the Solution of the Invention

본 발명은 전자파를 차폐하는 밀폐공간을 가지되 일측에 개폐도어가 장착되며, 바닥면의 일측 소정위치에 안테나의 수용공간을 가지도록 함몰부가 형성된 본체; 상기 본체의 바닥면을 제외한 천정 및 사방면에 장착된 제1 전파흡수체; 상기 본체의 바닥면상에 장착되며 선택적으로 개폐시킬수 있는 접지수단; 및 상기 접지수단상에서 놓여지며, 요구되는 측정환경에 따라 탈착되는 제2 전파흡수체를 포함하는 안테나 및 전자파 장해 측정 겸용 전자파무반사실을 제공한다.The present invention has a closed space for shielding electromagnetic waves, the opening and closing door is mounted on one side, the main body formed with a depression so as to have a receiving space of the antenna at one side of the bottom surface; A first radio wave absorber mounted on the ceiling and the four sides except for the bottom surface of the main body; A grounding means mounted on the bottom surface of the main body and selectively opening and closing; And a second electromagnetic wave absorber placed on the grounding means and detachable according to a required measurement environment.

4.발명의 중요한 용도4. Important uses of the invention

안테나 성능측정과 전자파 장해 측정을 위한 요구환경을 하나의 전자파 무반사실내에 형성할 수 있도록 한 것임.It is designed to create the required environment for antenna performance measurement and electromagnetic interference measurement in one electromagnetic wave room.

Description

안테나 성능측정 및 전자파장해 측정 겸용 전자파 무반사실Combined antenna performance measurement and electromagnetic interference measurement

본 발명은 안테나의 이득 및 복사패턴등 안테나의 성능 측정과 전자파장해(EMI;Electormagnetic Interference)의 측정을 하나의 시설내에서 실행할 수 있도록 한 안테나 및 전자파장애 측정 겸용 전자파 무반사실에 관한 것이다.BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an antenna and an electromagnetic anechoic chamber combined with an antenna and an electromagnetic interference measurement, which enable measurement of antenna performance such as antenna gain and radiation pattern and measurement of electromagnetic interference (EMI) in a single facility.

종래에는 안테나 측정을 위한 전자파 무반사실과 전자파장해를 측정하고자 하는 전자파무반사실이 각각 별도로 설치되어 있다.Conventionally, an electromagnetic radiation reflection chamber for measuring an antenna and an electromagnetic radiation reflection chamber for measuring electromagnetic interference are separately installed.

여기서, 전자의 안테나 측정을 위한 전자파 무반사실은 측정하고자 하는 안테나가 위치하는 공간(이하, "콰이어트 존(Quiet Zone)"이라 칭함)에서 전계의 변동이 일정한 범위내(Quietness or Reflectivity )로 안정되어야 한다. 이러한 요구성능을 만족하기 위하여 바닥과 천장 및 사방의 벽면에 폴리우레탄등의 수지에 카본을 흡착시켜 제조된 전파흡수체를 안테나의 요구성능 및 전자파 무반사실의 크기등에 따라 적절히 배열하여 부착하는 구조로 되어 있으며, 이러한 전자파무반사실을 언에코익 챔버(Anehcoic Chamber)라고 한다.Here, the electromagnetic anechoic chamber for measuring the antenna of the electron should be stable within a certain range (Quietness or Reflectivity) in the space where the antenna to be measured is located (hereinafter referred to as "Quiet Zone"). do. In order to satisfy the required performance, the radio absorber manufactured by adsorbing carbon to the resin such as polyurethane on the floor, ceiling and all four sides of the wall is properly structured and attached according to the required performance of the antenna and the size of the electromagnetic wave anechoic chamber. The electromagnetic radiation reflection chamber is called an anehcoic chamber.

또한, 후자의 전자파장해를 측정하고자 하는 전자파무반사실은 바닥을 제외한 천장 및 사방의 벽면에 전파흡수체를 배열하여 부착하는 구조로 되어 있으며, 이를 세미 언에코익 챔버(Semi-Anehcoic Chamber)라 한다. 바닥은 금속면 및 금속망으로 처리(이하, "접지면(ground plane)"이라 칭함)하여 피측정기가 위치하는 공간에서의 시험장감쇄(site attenuation)가 9kHz∼1GHz의 주파수 범위에서 표준 시험장 감쇄(Normalized Site Attenuation)의 이론치에 비교하여 ±4dB이내의 차이를 요구하고 있다.In addition, the electromagnetic radiation reflection room to measure the latter electromagnetic interference has a structure in which the radio wave absorber is arranged to attach to the ceiling and the walls of all four sides except the floor, which is called a semi-anehcoic chamber. The floor is treated with a metal surface and a metal net (hereinafter referred to as the "ground plane") so that site attenuation in the space where the subject is located is within the standard site attenuation in the frequency range of 9 kHz to 1 GHz. Compared to the theory of normalized site attenuation, a difference within ± 4dB is required.

상기와 같이, 각각의 언에코익 챔버와 세미 언에코익 챔버에 각각 안테나 성능측정장비와 전자파장해 측정장비를 별도로 설치하여 운용하고 있지만, 만일 이러한 측정장비들을 하나의 전자파 무반사실내에 고정 설치될 경우, 안테나 성능측정과 전자파장해 측정을 위한 측정기들이 서로 다르기 때문에 각각 다른 용도로 측정할 때 악영향을 주므로서 상기 안테나 측정과 전자파장해 측정 각각에 요구되는 성능을 만족하기가 불가능하였다. 이와 같이 안테나 성능과 전자파장해 측정을 위한 요구환경이 상호간에 상이함에 따라 기존에는 용도에 따라 안테나 측정용과 전자파장해 측정용 전자파 무반사실이 별도로 필요하였던 것이다. 이에따라 각 측정을 위한 별도의 전자파 무반사실이 설치되므로써 경제적으로 많은 설치비용이 소요될 뿐만 아니라, 전자파 무반사실 설치에 따른 공간을 확보해야 하는 문제점이 있었다.As described above, the antenna performance measuring device and the electromagnetic interference measuring device are separately installed and operated in each of the unechoic chamber and the semi-echoic chamber, but if these measuring equipments are fixedly installed in one electromagnetic anechoic chamber, However, since the measuring instruments for measuring antenna performance and electromagnetic interference are different from each other, it is impossible to satisfy the performance required for each of the antenna measurement and the electromagnetic interference measurement because they adversely affect when measuring for different uses. As the requirements for antenna performance and electromagnetic interference measurement are different from each other, conventionally, an electromagnetic anechoic chamber for antenna measurement and electromagnetic interference measurement was separately required according to the use. As a result, since a separate electromagnetic anechoic chamber for each measurement is installed, it is not only economically expensive to install, but there is a problem of securing a space due to the installation of an electromagnetic anechoic chamber.

따라서, 본 발명은 상기한 문제점을 해결하기 위해 안출한 것으로, 바닥면에 이동가능한 전파흡수체를 설치하여 필요에 따라 안테나 성능측정과 전자파장해 측정을 위한 환경을 조성할 수 있도록 한 안테나 성능측정 및 전자파장해 측정 겸용 전자파 무반사실을 제공함에 그 목적이 있다.Accordingly, the present invention has been made to solve the above problems, by installing a movable wave absorber on the bottom surface antenna performance measurement and electromagnetic waves to create an environment for antenna performance measurement and electromagnetic interference measurement, if necessary The purpose is to provide an electromagnetic wave anechoic chamber for both interference measurement.

도1은 본 발명에 의한 전자파 무반사실의 일실시예 구성을 나타낸 평면도.1 is a plan view showing an embodiment configuration of an electromagnetic anechoic chamber according to the present invention.

도2는 전자파 무반사실에 안테나 측정장치의 보관상태를 나타낸 개략도.Figure 2 is a schematic diagram showing the storage state of the antenna measuring apparatus in the electromagnetic anechoic chamber.

도3은 도2의 A-A단면도.3 is a cross-sectional view taken along line A-A of FIG.

도4는 전파흡수체 제거후의 상태를 나타낸 전자파 무반사실을 나타낸 평면도.Figure 4 is a plan view showing an electromagnetic anechoic chamber showing the state after the radio wave absorber is removed.

* 도면의 주요부분에 대한 부호의 설명* Explanation of symbols for main parts of the drawings

1 : 본체 1a,1b : 개폐도어1: body 1a, 1b: opening and closing door

1c : 콰이어트 존 2 : 함몰부1c: Quiet Zone 2: Recessed

3 : 안테나 마스트(Antena Mast) 4 : 지지대3: antenna mast (antenna mast) 4: support

4a : 슬라이딩레일 5 : 회동축4a: Sliding rail 5: Rotating shaft

6 : 턴테이블 7 : 제1 전파흡수체6: turntable 7: first wave absorber

8 : 금속면 9 : 제2 전파흡수체8 metal surface 9 second wave absorber

10 : 개폐식 접지판10: retractable ground plate

상기 목적을 달성하기 위한 본 발명은, 전자파를 차폐하는 밀폐공간을 가지되 일측에 개폐도어가 장착되며, 바닥면의 일측 소정위치에 안테나의 수용공간을 가지도록 함몰부가 형성된 본체; 상기 본체의 바닥면을 제외한 천정 및 사방면에 장착된 제1 전파흡수체; 상기 본체의 바닥면상에 장착되며 선택적으로 개폐시킬수 있는 접지수단; 및 상기 접지수단상에 놓여지며, 요구되는 측정환경에 따라 탈착되는 제2 전파흡수체를 포함하는 안테나 및 전자파 장해 측정 겸용 전자파무반사실을 제공한다.The present invention for achieving the above object, has a closed space to shield the electromagnetic wave is mounted on one side of the opening and closing, the main body formed with a recess so as to have a receiving space of the antenna at one side of the bottom surface; A first radio wave absorber mounted on the ceiling and the four sides except for the bottom surface of the main body; A grounding means mounted on the bottom surface of the main body and selectively opening and closing; And a second electromagnetic wave absorber placed on the grounding means and detachable according to a required measurement environment.

이하, 첨부된 도면을 참조하여 본 발명의 실시예를 상세히 설명하면 다음과 같다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

본 발명에 의한 안테나 성능측정 및 전자파장해 측정 겸용 전자파 무반사실은 도1에 도시한 바와 같이 전자파가 차폐된 소정 크기의 공간을 가지도록 육면체 형상을 가지며, 일측에 측정 장비, 제2 전파흡수체 및 측정시료를 수납 및 이탈시키기 위한 개폐도어(1a, 1b)가 장착된 본체(1)가 구비된다. 상기 본체(1)의 바닥면의 일측 소정위치에는 안테나를 위치시키기 위한 콰이어트 존(Quiet Zone)(1c)이 형성되며, 상기 콰이어트 존(1c)을 이루는 바닥면에는 안테나 마스트(3)가 수용될 수 있도록 도2에 도시한 바와 같은 소정크기의 함몰부(2)가 형성되어 있다. 여기서, 상기 안테나 마스터(3)의 장착구성을 도2 및 도3를 통하여 살펴보면 도면에 도시한 바와 같이 상기 함몰부(2)의 바닥면에 구비되며 그 상면에 슬라이드 레일(4a)이 구비된 지지대(4)와, 상기 지지대(4)의 슬라이드 레일(4a)상에 장착되며 90°각도내에서 자유회동하면서 안테나(3)을 회동시키는 회동축(5)으로 구성되어 안테나 성능측정시에는 직립되며, 전자파장해 측정시에는 함몰부(2)내로 수용될 수 있도록 한 구조로 되어 있다.Electromagnetic anechoic chamber combined with antenna performance measurement and electromagnetic interference measurement according to the present invention has a hexahedron shape to have a space of a predetermined size shielded from electromagnetic waves, as shown in FIG. The main body 1 equipped with the opening-closing doors 1a and 1b for accommodating and removing a sample is provided. A Quiet Zone 1c is formed at one side of the bottom surface of the main body 1 to position the antenna, and the antenna mast 3 is accommodated on the bottom surface of the Quiet Zone 1c. A depression 2 of a predetermined size is formed as shown in FIG. 2 and 3, the mounting structure of the antenna master 3 is provided on the bottom surface of the recess 2 and a support rail provided with a slide rail 4a on the top surface thereof. (4) and a rotating shaft (5) mounted on the slide rail (4a) of the support (4) and pivoting the antenna (3) while freely rotating within a 90 ° angle, standing upright when measuring antenna performance When measuring electromagnetic interference, it is designed to be accommodated in the depression 2.

또한, 상기 본체(1) 바닥면의 타측 소정위치에는 전자파장해 측정장비 및 측정시료를 위치시키기 위한 턴테이블(6)이 장착된다. 상기 전자파장해 측정장비 및 측정시료(도면에 도시하지 않음)는 상기 안테나 성능측정시에는 본체(1)외부에 위치하고 있다가 전자파장해 측정시에만 상기 턴테이블(6)상에 시료가 놓여지고 측정장비는 측정방법의 규정에 정해진 위치에 놓여질 수 있도록 한 것이다.In addition, at a predetermined position on the other side of the bottom surface of the main body 1, a turntable 6 for placing the electromagnetic interference measuring equipment and the measurement sample is mounted. The electromagnetic interference measuring device and the measurement sample (not shown) are located outside the main body 1 when measuring the antenna performance, and the sample is placed on the turntable 6 only when measuring the electromagnetic interference. It is to be placed in the position defined by the measurement method.

상기 본체(1)의 바닥면을 제외한 천정 및 사방면에는 제1 전파흡수체(7)가 장착되며, 상기 본체(1)의 바닥면상에는 금속면(8)과, 개폐가 가능한 다수의 바둑판 배열 금속판으로 제작된 개폐식 접지판(10)이 장착되어 전자파장해 측정을 위한 환경을 제공한다. 그리고, 상기 개폐식 접지판(10)의 상부에는 안테나 성능측정에 따른 환경을 제공할 수 있도록 제2 전파흡수체(9)가 장착되며, 이때의 상기 제2 전파흡수체(9)는 상기 개폐식 접지판(10)상에서 이동가능하게 놓여지는 구조로 되어 있다. 즉, 안테나 성능측정이 요구될 경우, 본체(1) 바닥면에 위치하며, 전자파 장해환경이 요구될 경우에는 도4에 도시한 바와 같이 상기 제2 전파 흡수체(9)가 본체(1) 외부로 이탈되도록 한 것이다. 도면에 도시하지는 않았지만, 상기 제2 전파흡수체(9)의 이동은 통상적으로 작업자의 힘을 빌어 수행하며, 별도의 이동장치를 구비하여 수행할 수도 있다.The first and second radio wave absorbers 7 are mounted on the ceiling and all sides except the bottom surface of the main body 1, and the metal surface 8 and the plurality of checkerboard array metal plates that can be opened and closed on the bottom surface of the main body 1. It is equipped with a retractable ground plate (10) made to provide an environment for electromagnetic interference measurement. In addition, a second radio wave absorber 9 is mounted on an upper portion of the retractable ground plate 10 so as to provide an environment according to antenna performance measurement. 10) It is designed to be movable on the structure. That is, when the antenna performance measurement is required, it is located on the bottom surface of the main body 1, and when the electromagnetic interference environment is required, the second electromagnetic wave absorber 9 moves to the outside of the main body 1 as shown in FIG. It is to be separated. Although not shown in the drawings, the movement of the second electric wave absorber 9 is typically performed by the force of an operator, and may be performed with a separate moving device.

상기와 같이 구성된 본 발명의 작용상태를 설명하면 다음과 같다.Referring to the working state of the present invention configured as described above are as follows.

먼저, 상기 본체(1)의 천정 및 사방면에 제1 전파흡수체(7)를 설치하고, 또한 상기 본체(1)의 콰이어트 존(1c)에 형성된 함몰부(2)에 수용되어 있는 안테나마스트(3)를 직립되게 회동시킨다. 그리고, 상기 본체(1) 바닥면에 설치되어 있는 개폐식 접지판(10)상에 제2 전파흡수체(9)를 위치시킨다. 이때, 상기 제2 전파흡수체(9)는 반사가 주로 일어나는 부분을 향하여 위치되므로써 안테나의 성능측정에 따른 환경을 신뢰적으로 조성할 수 있도록 한다.First, an antenna mast (1) is provided on the ceiling and four sides of the main body (1), and is housed in the depression (2) formed in the quiet zone (1c) of the main body (1). Rotate 3) upright. Then, the second radio wave absorber 9 is placed on the openable ground plate 10 provided on the bottom surface of the main body 1. In this case, the second radio wave absorber 9 is positioned toward a portion where reflection is mainly generated, thereby reliably creating an environment according to the performance measurement of the antenna.

한편, 전자파장해 측정시에는 상기 콰이어트 존(1c)의 함몰부(2)에 직립되어 있는 안테나(3)를 회동축(5)을 중심으로 90°회동시켜 접어 상기 함몰부(2)내로 수용시킨다. 그리고, 상기 개폐식 접지판(10)이 드러나도록 상기 본체(1)의 바닥면에 설치되어 있는 제2 전파흡수체(9)를 본체(1) 외부로 이탈시켜 소정의 보관장소에 보관하고, 상기 본체(1)의 턴 테이블(6)에 전자파장해 측정시료를 위치시키고 측정방법에 규정된 위치에 측정장비를 위치시키므로써 전자파장해 측정에 따른 환경을 조성한다. 이때에는 상기 안테나마스트(3)가 함몰부(2)에 수용되고 그 위에 개폐식 접지판(10)으로 덮으므로써 전자파장해 측정시 전혀 영향을 주지 않게 되는 것이다.On the other hand, during the measurement of electromagnetic interference, the antenna 3, which is upright in the depression 2 of the quiet zone 1c, is rotated by 90 ° about the rotation shaft 5 and folded to accommodate the depression 2 in the depression 2. . Then, the second electric wave absorber (9) installed on the bottom surface of the main body 1 so as to expose the open and close ground plate 10 is separated out of the main body 1 and stored in a predetermined storage location, the main body By placing an electromagnetic wave measurement sample on the turntable 6 of (1) and placing the measurement equipment at the position specified in the measurement method, an environment according to the electromagnetic wave measurement is created. At this time, the antenna mast 3 is accommodated in the recessed portion 2 and covered with a retractable ground plate 10 thereon, so that electromagnetic wave interference does not affect the measurement at all.

이상에서 설명한 본 발명은 전술한 실시예 및 첨부된 도면에 의해 한정되는 것이 아니고, 본 발명의 기술적 사상을 벗어나지 않는 범위 내에서 여러 가지 치환, 변형 및 변경이 가능함은 본 발명이 속하는 기술분야에서 통상의 지식을 가진 자에게 있어 명백할 것이다.The present invention described above is not limited to the above-described embodiment and the accompanying drawings, and various substitutions, modifications, and changes are possible within the scope without departing from the technical spirit of the present invention. It will be evident to those who have knowledge of.

전술한 바와 같이 본 발명에 따르면, 사방이 밀폐된 하나의 본체내에서 안테나 성능측정환경과 전자파장해 측정환경을 측정에 따른 영향을 효과적으로 배제시키면서 전환할 수 있도록 하여 안테나 성능 및 전자파장해 측정을 위한 요구를 동시에 만족할 수 있으며 공간적인 효율성과 경제적인 절감을 이룰수 있는 효과를 가진다.As described above, according to the present invention, it is possible to switch between antenna performance measurement environment and electromagnetic interference measurement environment within one main body sealed in all directions while effectively excluding the effects of measurement, thereby requiring antenna performance and electromagnetic interference measurement. Can be satisfied at the same time and has the effect of achieving spatial efficiency and economical savings.

Claims (4)

전자파를 차폐하는 밀폐공간을 가지되 일측에 개폐도어가 장착되며, 바닥면의 일측 소정위치에 안테나마스트의 수용공간을 가지도록 함몰부가 형성된 본체;A main body having an enclosed space for shielding electromagnetic waves and having an opening / closing door mounted at one side thereof, and having a recessed portion to have an accommodation space of the antenna mast at a predetermined position on one side of the bottom surface; 상기 본체의 바닥면을 제외한 천정 및 사방면에 장착된 제1 전파흡수체;A first radio wave absorber mounted on the ceiling and the four sides except for the bottom surface of the main body; 상기 본체의 바닥면상에 장착되며 선택적으로 개폐시킬수 있는 접지수단; 및A grounding means mounted on the bottom surface of the main body and selectively opening and closing; And 상기 접지수단상에 놓여지며, 요구되는 측정환경에 따라 탈착되는 제2 전파흡수체A second electromagnetic wave absorber placed on the grounding means and detachable according to a required measurement environment 를 포함하는 안테나 및 전자파 장해 측정 겸용 전자파무반사실.Electromagnetic interference reflection room for both antenna and electromagnetic interference measurement comprising a. 제1 항에 있어서,According to claim 1, 상기 본체의 함몰부 바닥에 장착되며 그 상부에 슬라이드 레일이 구비된 지지대와,A support mounted on a bottom of the recess of the main body and provided with a slide rail thereon; 상기 지지대 상에 장착되며, 상기 안테나마스트를 소정 각도로 회동시키기 위한 회동부를 더 포함하는 안테나 및 전자파 장해 측정 겸용 전자파무반사실.Mounted on the support, and further comprising a rotating unit for rotating the antenna mast at a predetermined angle electromagnetic interference reflection and reflection chamber. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 본체 바닥면의 타측 소정위치에 전자파장해 측정시료를 위치시키기 위해 장착된 턴테이블을 더 포함하는 안테나 및 전자파 장해 측정 겸용 전자파무반사실.And a turntable mounted to position the electromagnetic interference measurement sample at a predetermined position on the other side of the bottom surface of the main body. 제 1 항 또는 제 2 항에 있어서,The method according to claim 1 or 2, 상기 접지수단은The grounding means 금속면과,Metal, 상기 금속면상에 바둑판 배열로 설치되며 개폐가 가능한 금속판을 포함하는 안테나 및 전자파 장해 측정 겸용 전자파무반사실.An electromagnetic radiation reflector combined with an antenna and an electromagnetic interference measurement, including a metal plate that can be opened and closed on a checkerboard arrangement on the metal surface.
KR1019970038484A 1997-08-12 1997-08-12 Multi-purpose anechoic chamber for measuring antenna performance and emi/emc KR100222659B1 (en)

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KR20030029309A (en) * 2001-10-06 2003-04-14 윌 테크놀로지(주) Mini-anechoic chamber for testing bluetooth
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KR100929409B1 (en) * 2008-03-27 2009-12-03 주식회사 이엠따블유안테나 Ground jig for measuring antenna characteristics
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