现代电子技术
現代電子技術
현대전자기술
MODERN ELECTRONICS TECHNIQUE
2013年
23期
139-141
,共3页
同步开关噪声%电磁带隙%超带宽%印刷电路板
同步開關譟聲%電磁帶隙%超帶寬%印刷電路闆
동보개관조성%전자대극%초대관%인쇄전로판
synchronous switch noise%electromagnetic band gap(EBG)%ultra-wideband%printed circuit boards(PCB)
针对抑制印刷电路板中电源平面与接地平面之间的同步开关噪声问题，提出了一种新型的二维电磁带隙结构（BS EBG）。这一新型结构的设计基于在正方形金属贴片的四角刻蚀出折线型缝隙以降低贴片的有效电容，应用折线以增加相邻贴片的有效电感，单元晶格由折线与含有缝隙的正方形金属贴片桥接构成。仿真分析结果表明：相比于同参数的Z-bridged EBG电磁带隙结构，当抑制深度定义为-30 dB时，BS EBG结构阻带范围从220 MHz到超过20 GHz，相对带宽增加了约15%，阻带下限截止频率降低了110 MHz。
針對抑製印刷電路闆中電源平麵與接地平麵之間的同步開關譟聲問題，提齣瞭一種新型的二維電磁帶隙結構（BS EBG）。這一新型結構的設計基于在正方形金屬貼片的四角刻蝕齣摺線型縫隙以降低貼片的有效電容，應用摺線以增加相鄰貼片的有效電感，單元晶格由摺線與含有縫隙的正方形金屬貼片橋接構成。倣真分析結果錶明：相比于同參數的Z-bridged EBG電磁帶隙結構，噹抑製深度定義為-30 dB時，BS EBG結構阻帶範圍從220 MHz到超過20 GHz，相對帶寬增加瞭約15%，阻帶下限截止頻率降低瞭110 MHz。
침대억제인쇄전로판중전원평면여접지평면지간적동보개관조성문제，제출료일충신형적이유전자대극결구（BS EBG）。저일신형결구적설계기우재정방형금속첩편적사각각식출절선형봉극이강저첩편적유효전용，응용절선이증가상린첩편적유효전감，단원정격유절선여함유봉극적정방형금속첩편교접구성。방진분석결과표명：상비우동삼수적Z-bridged EBG전자대극결구，당억제심도정의위-30 dB시，BS EBG결구조대범위종220 MHz도초과20 GHz，상대대관증가료약15%，조대하한절지빈솔강저료110 MHz。
Aiming at the problem of restraining the synchronous switch noise between the power plane and the ground plane in printed circuit board,a new 2-D electromagnetic band gap(EBG)structure is proposed,which is based on etching the fold gap on the corners of the square metal patch to reduce the effective capacitance. The fold is used to increase the effective capaci-tance of the adjacent patch. The unit lattice is made up of the fold and square metal patches with gap. The simulation results indicate that compared to the Z-bridged EBG structure with the same parameters,the stop band range of BS EBG is from 220 MHz to over 20 GHz when inhibition depth is -30 dB,and the relative bandwidth is increased by about 15%,the lower-cut-off frequency is decreased by 110 MHz.
