GROUNDING METHOD AND MEASURING APPARATUS

PROBLEM TO BE SOLVED: To improve an allowable percentage of compatibility of a reference site method by optimizing conditions of ground plates, because, as for the allowable percentage of compatibility of the reference site method in 150 KHz-30 MHz according to the CISPR25 standard, it is checked th...

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Bibliographic Details
Main Authors MIDORI MASATAKA, KURIHARA HIROSHI, SUZUKI YOSHIKAZU, TORII MASASHI
Format Patent
LanguageEnglish
Japanese
Published 23.05.2016
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Summary:PROBLEM TO BE SOLVED: To improve an allowable percentage of compatibility of a reference site method by optimizing conditions of ground plates, because, as for the allowable percentage of compatibility of the reference site method in 150 KHz-30 MHz according to the CISPR25 standard, it is checked that propagation characteristics are fluctuated according to conditions such as width and alignment of ground plates.SOLUTION: The grounding method according to the present invention is characterized in that, besides a first ground plate disposed for grounding a grounding flat surface on a shield wall surface in an anechoic chamber or a ground plane, the other end of a counterpoise is grounded to the ground plane by a second ground plate. The counterpoise of a rod antenna is grounded to the ground plane so as to improve a compatibility percentage of a reference site method and make the compatibility of the reference site method in 150 KHz-30 KHz, within an allowance of ±6 dB.SELECTED DRAWING: Figure 1 【課題】CISPR25規格の150KHz〜30MHzにおける参照サイト法の適合性の許容パーセンテージは、接地板の幅、配列等の条件により伝搬特性の変動が確認されていることから、接地板の条件を最適化して、参照サイト法の適合性の許容パーセンテージを高める必要がある。【解決手段】本発明の接地方法は、接地平面を電波暗室のシールド壁面またはグランドプレーンに接地するために配置した第1の接地板に加え、カウンターポイズの他端を第2の接地板によりグランドプレーンへ接地することを特徴としている。ロッドアンテナのカウンターポイズをグランドプレーンへ接地することにより、参照サイト法の適合性のパーセンテージが向上し、150KHz〜30MHzにおいて参照サイト法の適合性±6dB以内の許容値内とすることができる。【選択図】図1
Bibliography:Application Number: JP20140221785