• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Microwave Magazine, IEEE >Controlled Agility: Frequency-Agile Planar Filters with Advanced Features
【24h】

Controlled Agility: Frequency-Agile Planar Filters with Advanced Features

机译：受控敏捷度：具有高级功能的频率捷变平面滤波器

获取原文
获取原文并翻译 | 示例
       
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

High-performance filters with electronically controlled transfer functions are needed for future microwave systems. In commercial applications, frequency agility is necessary to address ever-evolving standards and an increasingly congested spectrum, while military requirements include cosite interference mitigation for broadband systems and adjacent-channel simultaneous transmit and receive. These filters will enable new system architectures, which will, in turn, allow for improved performance and new capabilities. For example, as analog-to-digital converter (ADC) technology continues to advance, it is expected that, eventually, intermediate-frequency (IF) stages will not be needed; instead, direct detect schemes could be used, with the entire radio-frequency (RF) chain consisting basically of an ADC preceded by a filter. This places very high performance requirements on the filter, not only in terms of loss and selectivity but also frequency agility. Optimally, these filters would be tunable in the sense that center frequency and/or bandwidth can be changed, as well as reconfigurable in the sense that transfer function order and/or number and location of transmission zeroes can be changed. A filter that is both electronically tunable and reconfigurable allows the filter to be optimized for a given application or spectral situation [1].
机译：未来的微波系统需要具有电子控制传递功能的高性能滤波器。在商业应用中，频率敏捷性对于解决不断发展的标准和日益拥挤的频谱是必不可少的，而军事需求包括缓解宽带系统的同站干扰以及相邻信道同时发送和接收。这些过滤器将启用新的系统体系结构，从而可以提高性能和新功能。例如，随着模数转换器（ADC）技术的不断发展，预计最终将不需要中频（IF）级；取而代之的是，可以使用直接检测方案，整个射频（RF）链基本上由ADC加上滤波器组成。这对滤波器提出了非常高的性能要求，不仅在损耗和选择性方面，而且在频率捷变方面。最佳地，在可以改变中心频率和/或带宽的意义上，这些滤波器是可调的，并且在可以改变传递函数的阶数和/或传输零的数量和位置的意义上，这些滤波器是可重新配置的。电子可调和可重配置的滤波器可以针对给定的应用或频谱情况优化滤波器[1]。

著录项

  • 来源
    《Microwave Magazine, IEEE》 |2014年第5期|32-42|共11页
  • 作者

    Guyette A.;

  • 作者单位

    Naval Research Laboratory, Washington, DC 20375 USA|c|;

  • 收录信息
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号