| 1. | The broad fluorescence spectrum of the organic dyes suggests a broad tunability range for lasers using them as the active material .
有机染料具有宽荧光光谱使人们想到，若用它们作为激光介质，则激光器就会有宽的调谱范围。 |
| 2. | First , the tunability of optical parametric oscillater ( opo ) in ppln was analyzed
本文首先对周期性极化铌酸锂的光参量振荡( opo )调谐特性作了分析。 |
| 3. | The measurement results from interdigitated capacitors demonstrated that the tunability is 21 % when the bias is 40v and the loss is 0 . 25 %
对于叉指电容器结构，当外加直流偏压为40v时，调节率为21 % ，介电损耗低至0 . 25 % 。 |
| 4. | A tunability of 60 % and figure of merit of 133 have been achieved under 30v dc bias , demonstrating their usefulness for frequency - agile microwave devices at the liquid nitrogen temperature
在液氮温区表现出很好的微波器件应用前景。 4 、采用pld方法制备了高凰100 )取向的bao . ssr05五o创51卿si集成薄膜。 |
| 5. | The pst thin films which have high tunability and fom were fabricated successfully . the tunability of pb0 . 4sr0 . 6tio3 thin film is about 83 % ~ 85 % under the 100 khz , and keep constant with the change of frequency
Pb04sr06tio3薄膜室温下的可调谐量在100khz以下频率范围可达到约83 %一85 % ，且随频率的变化可调性基本维持在这一范围，变化不大。 |
| 6. | In such devices , it is desirable to have a high dielectric tunability in a certain electric field range , where tunability is defined as the variation of dielectric constant with respect to the applied voltage
自上世纪50年代以来，用电控的方式进行波束扫描的方法得到了迅速发展，从而使相控阵天线及其基本元件移相器的研究获得了广泛的重视。 |
| 7. | The structure can be controlled by controlling the pb contents in a certain temperature . the higher dielectric - temperature coefficient can hence be kept near the applied temperature , improving the dielectric tunability of the materials
控制铅含量可以控制一定温度下的结构状态，可以有目的的控制使用温度附近有较高的介电温度系数，达到改善介电调谐性能的目的。 |
| 8. | This thesis reviewed the development of the microwave tunable ferroelectric thin film materials , summarized the application of sol - gel on the materials , and introduced the principle and application of the microwave tunability in brief
本文全面综述了微波可调铁电薄膜材料的研究发展，总结了溶胶凝胶技术在制备此类材料中的应用，简要介绍了铁电材料微波可调的基本原理及其应用。 |
| 9. | It is capable to lower the insertion loss by using high conductivity electrode material and increasing the electrode thickness and quality factor of bst capacitor . at the same time increasing the tunability of the dielectric constant and the length of the transmission line can increase the phase shift
通过使用高电导率的电极材料、增加电极的厚度、提高bst薄膜电容的q值可以实现器件插损的降低；增大薄膜的介电系数变化率和传输线长度可以增加移相度。 |
| 10. | Their dielectric loss is about 10 - 2 , and figure of merit ( fom ) is less than 300 . recently , cross etc . found that lead strontium titanate ( pst ) has bigger tunability and lower loss , besides this , pst is a perovskite ferroelectric material which has good solid solution
就微波可调介电材料而言，目前研究较多、性能较好的主要是钛酸锶钡( bst )及其掺杂系列，其可调性一般在50左右，介电损耗在10 ~ ( - 2 )量级上，综合反映材料可调性的优值一般在300以下。 |
