• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal on Communications Antenna and Propagation >Broadband Beam-Forming Circuit Using Microstrip Multilayer Couplers
【24h】

Broadband Beam-Forming Circuit Using Microstrip Multilayer Couplers

机译：使用微带多层耦合器的宽带光束形成电路

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

Multipath antenna arrays require broadband small-sized beam-forming circuits for their implementation. For Butler matrix circuits implemented by means of directional couplers, the models have been developed of the broadband power tap devices using coupled lines. However, as a rule, the current topologies feature relatively large amplitude imbalance within the working frequency band. In order to reduce the flatness of both the working attenuation and the transient attenuation, a microstrip topology of the multilayer directional coupler is introduced using coupled lines. Distinctive feature of this topology is the uncommon configuration of the coupling aperture. The coupling aperture shape is optimized within the 4-8 GHz frequency band according to the criterion of the minimum deviation of the amplitude-frequency characteristics from the ideal values. Within the octave band, the developed coupler features the flatness of the working attenuation and the transient attenuation of 0.6 dB as well as the phase imbalance equal to 1.2°. The maximum overall size of the coupler topology does not exceed a quarter of the wavelength. A four-beam beam-forming Butler circuit based on this coupler is presented. The results of both electrodynamic simulation of the circuit and the experimental studies of the mock-up produced are also demonstrated. It is determined that they are in good agreement with each other. The experimental values of the transient droop and the working attenuation of the matrix circuit deviate from the level of 6 dB by no more than 2.5 dB. The maximum phase imbalance does not exceed 8° from the nominal value.
机译：多径天线阵列需要宽带小型光束形成电路以实现它们的实现。对于通过定向耦合器实现的Butler矩阵电路，该模型已经开发了使用耦合线的宽带电源挖掘装置。然而，通常，当前拓扑结构在工作频带内具有相对大的幅度不平衡。为了降低工作衰减和瞬态衰减的平坦度，使用耦合线引入多层方向耦合器的微带拓扑。这种拓扑的独特特征是联轴器孔的罕见配置。根据来自理想值的幅度频率特性的最小偏差的标准，耦合孔径形状在4-8GHz频带内进行了优化。在八度音频频带内，开发的耦合器具有工作衰减的平整度，并且瞬态衰减为0.6 dB，以及相位不平衡等于1.2°。耦合器拓扑的最大总体尺寸不超过波长的四分之一。提出了一种基于该耦合器的四光束形成管道电路。还证明了电路电动模拟的结果和产生的模拟的实验研究。确定他们彼此吻合良好。瞬态下垂的实验值和矩阵电路的工作衰减偏离6dB的水平不超过2.5 dB。最大相位不平衡与标称值不超过8°。

著录项

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