移动通信
移動通信
이동통신
MOBILE COMMUNICATIONS
2014年
6期
60-66
,共7页
EBG结构%传输特性曲线阻带%表面波带隙%散射特性
EBG結構%傳輸特性麯線阻帶%錶麵波帶隙%散射特性
EBG결구%전수특성곡선조대%표면파대극%산사특성
EBG structure%transmission characteristic curve%surface wave bandgap%scattering property
仿真研究mushroom形式的EBG结构，所得结果揭示了EBG结构表面波带隙与传输特性曲线阻带不一致的原因是EBG结构在表面波带隙内的某些频段上对表面波有较强的散射，并利用微带贴片天线模型进行验证，表明EBG结构的散射特性会使得贴片天线前后比恶化。通过适当调整EBG结构尺寸，在保证表面波带隙几乎不变的情况下，将较强散射频段移出带隙范围，使得在整个表面波带隙内贴片天线前后比都有较大的改善，同时保证了表面波带隙、传输特性曲线阻带和贴片天线前后比改善频段的一致性。
倣真研究mushroom形式的EBG結構，所得結果揭示瞭EBG結構錶麵波帶隙與傳輸特性麯線阻帶不一緻的原因是EBG結構在錶麵波帶隙內的某些頻段上對錶麵波有較彊的散射，併利用微帶貼片天線模型進行驗證，錶明EBG結構的散射特性會使得貼片天線前後比噁化。通過適噹調整EBG結構呎吋，在保證錶麵波帶隙幾乎不變的情況下，將較彊散射頻段移齣帶隙範圍，使得在整箇錶麵波帶隙內貼片天線前後比都有較大的改善，同時保證瞭錶麵波帶隙、傳輸特性麯線阻帶和貼片天線前後比改善頻段的一緻性。
방진연구mushroom형식적EBG결구，소득결과게시료EBG결구표면파대극여전수특성곡선조대불일치적원인시EBG결구재표면파대극내적모사빈단상대표면파유교강적산사，병이용미대첩편천선모형진행험증，표명EBG결구적산사특성회사득첩편천선전후비악화。통과괄당조정EBG결구척촌，재보증표면파대극궤호불변적정황하，장교강산사빈단이출대극범위，사득재정개표면파대극내첩편천선전후비도유교대적개선，동시보증료표면파대극、전수특성곡선조대화첩편천선전후비개선빈단적일치성。
The simulation results of mushroom EBG structure show that the reason of the inconsistency between the surface wave bandgap and the transmission characteristic curve is that the EBG structure causes the strong scattering of surface wave in some frequency of surface wave bandgap. By using micro-strip patch antenna model, the result shows that the scattering property of EBG structure will make the front-to-rear ratio worse. Finally, by appropriately adjusting the size of the EBG structure in the condition that the surface wave bandgap is almost the same, the frequency band with strong scattering will be removed out of the bandgap, which improves the front-to-rear ratio of patch antenna in the whole surface wave bandgap. At the same time, it ensures the consistency among the surface wave bandgap, the transmission characteristic curve and the frequency band with the improved front-to-rear ratio of the patch antenna.
