RADIO WAVE ABSORBENT OF HIGH FREQUENCY COMMUNICATION DEVICE

To improve mass productivity, reduce costs, and reduce weight regarding a radio wave absorbent of a high frequency communication device.SOLUTION: A radio wave absorbent 10 of a high frequency communication device 100 which absorbs unwanted emission radio waves of millimeter wave radar to reduce wave...

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Bibliographische Detailangaben
Hauptverfasser: FUJIO TATSURO, MURANAKA MAKOTO
Format: Patent
Sprache:eng ; jpn
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Zusammenfassung:To improve mass productivity, reduce costs, and reduce weight regarding a radio wave absorbent of a high frequency communication device.SOLUTION: A radio wave absorbent 10 of a high frequency communication device 100 which absorbs unwanted emission radio waves of millimeter wave radar to reduce wave interference to a semiconductor element 110 in the high frequency communication device 100, the radio wave absorbent 10 comprising: a side part 40 surrounding a perimeter of the semiconductor element 110 fixed to a base part 20 provided in the high frequency communication device 100; and a top part 50 which closes an open surface surrounded by the side part 40. An inner surface of the top part 50 is provided with a plurality of projections 60 projecting toward the semiconductor element 110 located in the radio wave absorbent 10, located apart from the semiconductor element 110, and periodically arranged. The projections 60 are formed in tapered shapes toward the semiconductor element 110, and integrally molded with a synthetic resin.SELECTED DRAWING: Figure 1 【課題】本発明は、高周波通信装置の電波吸収体に関し、量産性を向上でき、又、コストを低減でき、更に軽量化を図ることができる。【解決手段】ミリ波レーダー等の不要放射電波を吸収して高周波通信装置100内の半導体素子110への電波干渉を低減する高周波通信装置100の電波吸収体10において、電波吸収体10は、高周波通信装置100に設けられたベース部20に固定された半導体素子110の周囲を取り囲むサイド部40と、サイド部40により取り囲まれる開放面を塞ぐトップ部50と、から構成され、トップ部50の内面には、電波吸収体10内に位置する半導体素子110に向かって突出し、半導体素子110から離れて位置し、周期的に配置された複数の突起部60を設け、突起部60は、半導体素子110に向かって先細り状に形成され、合成樹脂で一体的に成形される。【選択図】図1