| 1. | The chapter also presents experimental results of the impedance bandwidth and radiation efficiency
良好的全向辐射特性和低sar值使这个天线能够应用在实际的手机中。 |
| 2. | Thus a completely numerical compute analysis method is established in fluid about vibrational radiation efficiency at full frequency
从而建立一套圆柱壳体在流场中振动声辐射效率在全频段的数值计算分析方法。 |
| 3. | Then , the radiation efficiency at low frequency and frequency response at high frequency in fluid are computed respectively by both sysnoise software and autosea software
然后结合sysnoise软件和autosea软件分别计算壳体在流场中声辐射效率在低频段和高频段时的频率响应。 |
| 4. | The use of aperture coupled feeding widens the working band and increases the isolation . simultaneously , the application of round patch can upgrade the gain and radiation efficiency of the antenna
采用口径耦合馈电能够展宽带宽,提高隔离度,而采用圆形作为贴片形状可以提高天线的增益和辐射效率。 |
| 5. | Numerical analysis of vibration awl sound radiation efficiency from a submerged cylindrical shell has been carried out by using fem methods , bem methods and statistical energy methods
摘要利用有限元、边界元和统计能量分析方法并结合软件对圆柱壳体在流场中受激振动及声辐射效率作了数值计算分析研究。 |
| 6. | Results are presented for the sound radiation efficiency and power of the modes of the rectangular baffled plate subjected to simply - supported boundary conditions when the plate is excited by obliquely incident plane wave
通过计算，得到了嵌在无限大障板中简支板模型在斜波入射作用下的声辐射功率和辐射效率。 |
| 7. | The laser power not only makes the co2 laser tube starting easily , gives the full scope to the function of it , but also improves the radiation efficiency , prolongs the service life of laser tube and laser power supply
本电源可使二氧化碳激光器启辉容易、使二氧化碳激光器的性能得到充分发挥，转换效率提高，延长激光器的寿命。 |
| 8. | The present invent ion utilizes the top loading technique and the smooth tapering technique to create the design of a compact and built - in antenna which will provide a planar antenna structure with broad bandwidth and high radiation efficiency
馈入传输线的宽度大致与渐变带段的底边同宽，且顶边与渐变带段的底边密接，而底边藕接至频电路。 |
| 9. | Antenna parameters studies are presented and practical design considerations for achieving high gain and wide bandwidth are given . in chapter 4 , a novel pifa with high radiation efficiency is designed for a tri - band mobile handset application
天线印刷线路板的尺寸等参数对天线谐振频率和带宽的影响在本章中详细研究,一个详细的实际设计例子也在本章中介绍,测试结果表明天线获得了较高的增益和较宽的带宽。 |
| 10. | Using finite element and boundary element method , a modal analysis model of complex structural acoustic radiation in light fluid is proposed for computing modal acoustic radiation frequency , farfield sound pressure , modal radiated acoustic power and acoustic radiation efficiency
摘要采用有限元和边界元方法建立了轻流体介质中复杂结构振动声辐射的模态分析模型，可计算结构的声辐射模态频率、模态场点声压、模态辐射声功率和声辐射效率等声场特性参数。 |
