English translation for "天线的方向性"
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- antenna directional characteristic
Related Translations:
天线方向性: aerial directivityantenna directivitydirectivity diagram of an antennadirectivity of antennadirectivity; antenna 方向性凝固: directional solidification 方向性屏幕: directional screen 方向性照明: directional lighting 方向性扩散: directional diffusenessdirectional diffusibilitydirectional divergencedirectional doffuser 方向性传声器: directional microphone 方向性优势: directional preponderance 方向性增益: directional gaindirective gaindirectivity gain
- Example Sentences:
| 1. | Its band structure is analyzed . after the working frequency is selected , the meta - material cover increases the patch antenna ' s directivity by 9 . 14db
在选定的工作频率，异向介质覆层将贴片天线的方向性系数提高了9 . 14db 。 | | 2. | Phased - array radiation lobe is superposed by isometric array element with constant amplitude . using the concept of real and imaginary space , the scanning lobe is researched
通过“实虚空间”的概念,分析了扫描中的阵列波瓣,总结给出相控阵天线的方向性系数。 | | 3. | To broaden the antenna ' s impedance bandwidth and its radiation pattern , a novel printed dipole antenna with reflecting structure of v - shaped ground plane was proposed
摘要为了扩展天线的阻抗带宽和改善天线的方向性，提出一种采用了地平面反射结构的新型印制偶极子天线。 | | 4. | Its size is small ( with an unit length of about 23 . 7 % of the wavelength in the cover medium ) , and its effectiveness is evident ( the patch antenna ' s directivity is increased by 3 . 16db )
这种结构具有尺寸小(边长仅为介质中波长的23 . 7 ) 、效果明显(将贴片天线的方向性系数提高了3 . 16db )的优点。 | | 5. | Combining this pmc structure with the pbg cover maintained above , a new patch antenna with a pmc substrate and a pbg cover has been introduced for the first time . such a structure can increase the directivity more effectively ( the directivity is increased by 7 . 3db ) . 4
结合这种pmc结构和第2点中提到的pbg覆层，首次设计出了具有pmc基底与pbg覆层的新型贴片天线，对方向性改进效果更加显著(将贴片天线的方向性系数提高了7 . 3db ) 。 | | 6. | The result shows that the pbg structure has obvious character of forbidden band at the suitable size , and can be designed to good performance microwave filter . the pbg structure have the character of high resistance , that can reinforce the forward radiation , and reduce the backward radiation , increase the directivity , improve the gain and ameliorate the performance of the antenna . in addition , the pbg structure can also greatly increase the isolation and significantly decrease the coupling between the antenna elements
研究结果表面，取合适的尺寸时， pbg结构具有明显的禁带特性，可以设计成性能良好的微波滤波器； pbg结构具有高阻特性，把这种特性用于微波天线时， pbg结构可以加强前向辐射，减小后向辐射，增大天线的方向性系数，从而提高天线的增益，改善天线的性能，另外， pbg结构还可以大大提高天线单元之间的隔离度，显著减小天线单元间的耦合。 | | 7. | The performance of the pbg antenna using the new pbg cover together with a pbg substrate is studied by the fdtd method together with the pml boundary treatment . the numerical results show that a more focused beam radiated in the broadside direction is achieved . the gain of the pbg patch antenna in the forward direction is improved by about 6 db . the radiation directivity is improved significantly and reaches 11 . 5 db , which is 0 . 4 db less than the maximum value that is allowed physically for this size of the antenna ( this difference is about 4 . 1 db less than the difference achieved by thevenot et al . ,
用fdtd方法并结合pml吸收边界条件，我们对加了这种新的覆层结构并且基底钻孔的复合结构电磁(光子)晶体贴片天线的性能进行了研究，结果证明加了这种新的电磁晶体覆层结构以后，天线的波束收拢很多，并且向前辐射的增益大大提高，与普通天线相比，天线的e面和h面方向图上向前辐射的增益均提高了约6db ，另外，该复合结构天线的方向性系数达到了11 . 5浙江大学博士学位论文db ，与该物理尺寸天线的方向性系数的理论极限值( 11 . 9db )相差0 . 4db ，该差值比thevenot等人设计的电磁晶体覆层天线的相应差值减少了约4 . 1db ，比qiu等人设计的电磁晶体天线的相应差值减少了约1 | | 8. | Especially after the second world war , single radiator can not match the request of high gain , high efficiency and high concentrative electromagnetic , but what is in great need . then , scholars and researchers apply themselves to approach the array antenna to solve the problem
特别是第二次世界大战后,高增益、高辐射效率以及高集中辐射场的要求,使得单个辐射器无法达到特定的效果和要求,于是,在天线的设计工作中,为增强天线的方向性、提高天线增益,各国学者和研究人员将工作重点放到天线阵列上面。 |
- Similar Words：
- "天线得得b" English translation, "天线得益" English translation, "天线的" English translation, "天线的带宽" English translation, "天线的调谐" English translation, "天线的副反射器" English translation, "天线的各向同性增益" English translation, "天线的功率辐射部分" English translation, "天线的功率馈电" English translation, "天线的机械仰角" English translation
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