| 1. | This paper will first discuss bandwidth enhancement in general , and then research the multiple resonance method to enhance the bandwidth
在讨论微带天线频带展宽的基础上，研究多谐振方式展宽频带的方法。 |
| 2. | In this paper , the extension theory of bandwidth in digital system and three key points of frequency band extension technology are studied experimentally by simulation
本文主要研究了数字系统频带展宽原理及频带展宽中的三个关键技术。 |
| 3. | We summarized three key points of frequency band extension technology and systematic studied these points by simulation . an experiment executing frequency band extension for a concrete digital measurement system was performed
最后，我们对数字系统频带展宽技术中三项关键技术的综合仿真，并针对一个具体数字系统实施频带展宽进行了实验。 |
| 4. | The frequency band extension with time base jitter is also studied by simulation . the results show that the compensation of time jitter can reduce the error of signal and then increase the accuracy of frequency band extension
对时基抖动的频带展宽技术的仿真结果表明，通过扩展的概率密度法对时基抖动的补偿，可以减小信号的误差，因而提高频带展宽的精度。 |
| 5. | We discussed common methods of digital deconvolution and analyzed effects of noise on it . then , we simulated digital deconvolution filters and optimization criteria of filtration parameters . after that , we gave the application of them in the frequency band extension technique
首先，介绍了数字反卷积的常用方法及噪声对数字反卷积的影响；然后，研究了常用的数字反卷积滤波器及滤波参数的优化准则；最后，给出了数字反卷积在频带展宽技术中的应用。 |
| 6. | Secondly , because the band of the traditional microstrip antenna is very narrow . and the isolation can ’ t meet the requirement when the coaxial - line feeding is used to realize the dual polarization . the following work lays heavy stress on analysis of the way of widening the bandwidth and developing the isolation of the antenna
传统的微带天线带宽较窄,采用普通同轴线馈电实现双极化的时候,隔离度不能够满足天线的要求,所以在接下来工作中,重点分析了微带天线频带展宽和隔离度改善的方法。 |
| 7. | The way of widening the band is realized by employing the inverted parasitic patch and the thick and low dielectric constant substance . with this treatment , the relative band of the antenna can be widened up to 20 % . and by adopting the way of two h - slots arranged in a “ t ” configuration , the isolation is improved
微带天线的频带展宽通过采用倒悬寄生贴片和较厚的低介电常数的介质来实现,经过这样处理后的天线带宽可以达到20 %以上;而隔离度的改善则是采用了两个h形缝隙排列成“ t ”型结构。 |
| 8. | The time base drift deduced by the change of temperature is discussed particularly and the compensation method of it is analyzed . finally , we also studied frequency band extension under time base distortion condition by simulation . the results show that the compensation of time base distortion can reduce the error of signal and then increase the accuracy of frequency band extension
首先，介绍时基失真的相关概念及其对测量信号的影响；其次，对时基失真特性测量的不同方法进行了理论分析和比较，并对分析信号法进行了仿真研究；再次，对时基失真的补偿方法进行分析和仿真研究；并专门对温度变化引起的时基漂移及其补偿方法进行了简要分析；最后，对时基失真条件下的频带展宽技术的仿真表明时基失真的补偿可以减小信号的误差，因而提高频带展宽的精度。 |
