JP5018885B2 - 電磁波測定装置 - Google Patents
電磁波測定装置 Download PDFInfo
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- JP5018885B2 JP5018885B2 JP2009525320A JP2009525320A JP5018885B2 JP 5018885 B2 JP5018885 B2 JP 5018885B2 JP 2009525320 A JP2009525320 A JP 2009525320A JP 2009525320 A JP2009525320 A JP 2009525320A JP 5018885 B2 JP5018885 B2 JP 5018885B2
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- measurement
- radio wave
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- antenna
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- 238000005259 measurement Methods 0.000 claims description 132
- 239000006096 absorbing agent Substances 0.000 claims description 57
- 238000010521 absorption reaction Methods 0.000 claims description 53
- 229910052751 metal Inorganic materials 0.000 claims description 21
- 239000002184 metal Substances 0.000 claims description 21
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 239000011358 absorbing material Substances 0.000 claims description 4
- 230000010287 polarization Effects 0.000 description 20
- 230000005855 radiation Effects 0.000 description 11
- 238000012360 testing method Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- 238000007796 conventional method Methods 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 238000012937 correction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Images
Classifications
-
- 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
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
- Aerials With Secondary Devices (AREA)
Description
2 金属筐体
2A 前壁面(対向面)
2B 後壁面(対向面)
2C 左壁面(対向面)
2D 右壁面(対向面)
2E 天井面(対向面)
2F 底面(対向面)
3 電波吸収体
4 2軸ポジショナ
5 被測定物
6 測定用アンテナ
8 ネットワークアナライザ
Claims (5)
- 箱状をなす金属筐体の内部に電波吸収体が設けられた電波無響箱と、該電波無響箱内に設けられた測定対象となる被測定物と、該被測定物と対向して前記電波無響箱内に設けられ該被測定物からの電磁波を測定する測定用アンテナとを備えた電磁波測定装置において、
前記被測定物は複数の周波数帯の電磁波を放射し、
前記電波吸収体は、前記被測定物から放射される電磁波のうち1つ以上の周波数帯を含む特定の周波数帯域では吸収特性が高く、前記被測定物から放射される電磁波のうち残余の1つ以上の周波数帯を含む他の周波数帯域では吸収特性が低い構成とし、
前記電波無響箱の金属筐体は互いに対向した2つの対向面を備え、
前記被測定物から放射した電磁波が前記2つの対向面のうち一方で反射して測定用アンテナに入射する第1の反射経路の長さ寸法をL1とし、前記被測定物から放射した電磁波が前記2つの対向面のうち他方で反射して測定用アンテナに入射する第2の反射経路の長さ寸法をL2とし、前記電波吸収体の吸収特性が低い他の周波数帯域に含まれる1つ以上の周波数帯のうち最大周波数と最小周波数との間の中心周波数の波長をλとしたときに、前記第1,第2の反射経路の長さ寸法L1,L2の差ΔLが0.25λ以上で0.5λ以下の範囲となる位置に、前記測定用アンテナを配置したことを特徴とする電磁波測定装置。 - 前記電波吸収体は、前記特定の周波数帯域に含まれる最低の周波数帯以上の高周波帯域では吸収特性が高く、前記特定の周波数帯域よりも低い周波数帯を含む前記他の周波数帯域としての低周波帯域では吸収特性が低い構成としてなる請求項1に記載の電磁波測定装置。
- 前記金属筐体は四角形筒状に形成し、
前記測定用アンテナおよび被測定物は、該金属筐体の軸方向に互いに離間し、四角形横断面の対角線上で中心からオフセットした位置にそれぞれ配置してなる請求項1に記載の電磁波測定装置。 - 前記電波吸収体は、カーボンを含有した電波吸収材料を用いてピラミッド形状またはテーパ形状に形成してなる請求項1に記載の電磁波測定装置。
- 前記測定用アンテナは、前記電波吸収体の吸収特性が低い他の周波数帯域では無指向性を有する構成としてなる請求項1に記載の電磁波測定装置。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009525320A JP5018885B2 (ja) | 2007-07-30 | 2008-07-04 | 電磁波測定装置 |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2007197463 | 2007-07-30 | ||
JP2007197463 | 2007-07-30 | ||
PCT/JP2008/062162 WO2009016923A1 (ja) | 2007-07-30 | 2008-07-04 | 電磁波測定装置 |
JP2009525320A JP5018885B2 (ja) | 2007-07-30 | 2008-07-04 | 電磁波測定装置 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2009016923A1 JPWO2009016923A1 (ja) | 2010-10-14 |
JP5018885B2 true JP5018885B2 (ja) | 2012-09-05 |
Family
ID=40304160
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009525320A Expired - Fee Related JP5018885B2 (ja) | 2007-07-30 | 2008-07-04 | 電磁波測定装置 |
Country Status (5)
Country | Link |
---|---|
JP (1) | JP5018885B2 (ja) |
KR (1) | KR101038352B1 (ja) |
CN (1) | CN101765777B (ja) |
TW (1) | TW200921117A (ja) |
WO (1) | WO2009016923A1 (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9476895B2 (en) | 2007-04-06 | 2016-10-25 | Becton, Dickinson And Company | Open platform automated sample processing system |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102809683B (zh) * | 2011-06-29 | 2015-04-01 | 深圳光启高等理工研究院 | 基于平面光波导及超材料的电磁波传感器 |
CN103091523B (zh) * | 2011-10-31 | 2017-01-25 | 鸿富锦精密工业(深圳)有限公司 | 切换式电波暗室 |
CN103163339B (zh) * | 2011-12-09 | 2016-12-21 | 鸿富锦精密工业(深圳)有限公司 | 电波暗室 |
KR101470399B1 (ko) * | 2013-12-30 | 2014-12-09 | 주식회사 이레테크 | 전자파 측정 시스템 |
KR101691303B1 (ko) * | 2015-09-01 | 2016-12-29 | 금오공과대학교 산학협력단 | 극저주파 영역대의 전자기장 측정장치 |
KR102009668B1 (ko) * | 2018-03-28 | 2019-08-13 | 에스아이오티 주식회사 | 이동형 전자파 차폐 흡수 성능 측정장치 |
JP6876021B2 (ja) * | 2018-08-24 | 2021-05-26 | アンリツ株式会社 | 電磁波シールドボックス |
EP4425711A1 (en) * | 2023-03-01 | 2024-09-04 | Rohde & Schwarz GmbH & Co. KG | Biconical antenna assembly and test system |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05183289A (ja) * | 1991-12-27 | 1993-07-23 | Hitachi Eng Co Ltd | 電波吸収体 |
JPH10112595A (ja) * | 1996-10-04 | 1998-04-28 | Tokin Corp | 電波吸収体 |
JPH10282174A (ja) * | 1997-04-08 | 1998-10-23 | Ando Electric Co Ltd | シールドボックス |
JP2000214201A (ja) * | 1999-01-28 | 2000-08-04 | Matsushita Electric Ind Co Ltd | アンテナ測定方法及び測定装置 |
JP2005061949A (ja) * | 2003-08-11 | 2005-03-10 | Device Co Ltd | 電磁波測定暗箱 |
WO2006047677A1 (en) * | 2004-10-25 | 2006-05-04 | Qualcomm Incorporated | Systems, methods and apparatus for determining a radiated performance of a wireless device |
JP2007087980A (ja) * | 2005-09-16 | 2007-04-05 | Goto Ikueikai | 電波吸収体 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2825539A1 (fr) * | 2001-06-01 | 2002-12-06 | Thomson Licensing Sa | Dispositif pour l'emission et la reception d'ondes electro-magnetiques |
CN100351635C (zh) * | 2004-08-20 | 2007-11-28 | 虹光精密工业(苏州)有限公司 | 电磁波检测系统 |
-
2008
- 2008-07-04 TW TW97125166A patent/TW200921117A/zh not_active IP Right Cessation
- 2008-07-04 KR KR1020107001979A patent/KR101038352B1/ko not_active IP Right Cessation
- 2008-07-04 JP JP2009525320A patent/JP5018885B2/ja not_active Expired - Fee Related
- 2008-07-04 CN CN2008801005202A patent/CN101765777B/zh not_active Expired - Fee Related
- 2008-07-04 WO PCT/JP2008/062162 patent/WO2009016923A1/ja active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05183289A (ja) * | 1991-12-27 | 1993-07-23 | Hitachi Eng Co Ltd | 電波吸収体 |
JPH10112595A (ja) * | 1996-10-04 | 1998-04-28 | Tokin Corp | 電波吸収体 |
JPH10282174A (ja) * | 1997-04-08 | 1998-10-23 | Ando Electric Co Ltd | シールドボックス |
JP2000214201A (ja) * | 1999-01-28 | 2000-08-04 | Matsushita Electric Ind Co Ltd | アンテナ測定方法及び測定装置 |
JP2005061949A (ja) * | 2003-08-11 | 2005-03-10 | Device Co Ltd | 電磁波測定暗箱 |
WO2006047677A1 (en) * | 2004-10-25 | 2006-05-04 | Qualcomm Incorporated | Systems, methods and apparatus for determining a radiated performance of a wireless device |
JP2007087980A (ja) * | 2005-09-16 | 2007-04-05 | Goto Ikueikai | 電波吸収体 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9476895B2 (en) | 2007-04-06 | 2016-10-25 | Becton, Dickinson And Company | Open platform automated sample processing system |
Also Published As
Publication number | Publication date |
---|---|
CN101765777A (zh) | 2010-06-30 |
WO2009016923A1 (ja) | 2009-02-05 |
TW200921117A (en) | 2009-05-16 |
KR20100031134A (ko) | 2010-03-19 |
KR101038352B1 (ko) | 2011-06-01 |
TWI372253B (ja) | 2012-09-11 |
JPWO2009016923A1 (ja) | 2010-10-14 |
CN101765777B (zh) | 2012-10-10 |
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