现代电子技术
現代電子技術
현대전자기술
Modern Electronics Technique
2015年
23期
64-67
,共4页
超材料%微带天线%高增益%高方向性
超材料%微帶天線%高增益%高方嚮性
초재료%미대천선%고증익%고방향성
metamaterial%microstrip antenna%high-gain%high-directivity
分别将创新设计的两层“格子”型超材料单元加载于同轴馈电微带天线的正上方，利用其零折射率效应聚拢电磁波；将π型超材料单元加载于天线基板，利用超材料的禁带效应抑制天线后向波。分别对两种优化方法进行实验对比分析，最后综合两种方法设计出一款高方向性、高增益的微带天线。结合仿真实验与实物测试结果验证了理论的正确性。综合设计的新型微带天线与传统天线相比，增益为8.94 dB，增加了3.03 dB，提高了51.27%，方向性系数为10.69 dB，增加了3.51 dB，提高了48.89%，达到了设计实验的目标。
分彆將創新設計的兩層“格子”型超材料單元加載于同軸饋電微帶天線的正上方，利用其零摺射率效應聚攏電磁波；將π型超材料單元加載于天線基闆，利用超材料的禁帶效應抑製天線後嚮波。分彆對兩種優化方法進行實驗對比分析，最後綜閤兩種方法設計齣一款高方嚮性、高增益的微帶天線。結閤倣真實驗與實物測試結果驗證瞭理論的正確性。綜閤設計的新型微帶天線與傳統天線相比，增益為8.94 dB，增加瞭3.03 dB，提高瞭51.27%，方嚮性繫數為10.69 dB，增加瞭3.51 dB，提高瞭48.89%，達到瞭設計實驗的目標。
분별장창신설계적량층“격자”형초재료단원가재우동축궤전미대천선적정상방，이용기령절사솔효응취롱전자파；장π형초재료단원가재우천선기판，이용초재료적금대효응억제천선후향파。분별대량충우화방법진행실험대비분석，최후종합량충방법설계출일관고방향성、고증익적미대천선。결합방진실험여실물측시결과험증료이론적정학성。종합설계적신형미대천선여전통천선상비，증익위8.94 dB，증가료3.03 dB，제고료51.27%，방향성계수위10.69 dB，증가료3.51 dB，제고료48.89%，체도료설계실험적목표。
The metamaterials unit of two?layer“lattice”type is loaded right above the coaxial feed microstrip antenna,and the effect of its zero refractive index is used to gather the electromagnetic wave. The π?type metamaterials unit is loaded to the an?tenna substrate,and the forbidden band effect of the metamaterials is used to suppress the backward wave of the antenna. The two optimization methods are compared and analyzed respectively with experiments,and a high?directivity and high?gain mi?crostrip antenna was designed by synthesizing the two methods. In combination with the results of simulation experiment and actual test,the correctness of the theory is verified. Compared with the traditional antenna,the gain of the designed microstrip antenna is 8.94 dB,which is increased by 3.03 dB,and improved with 51.27%;the directivity factor is 10.69 dB,which is increased by 3.51 dB,and improved with 48.89%. The performance of the microstrip antenna can achieve the target of design experiment.
