排序方式: 共有8条查询结果,搜索用时 31 毫秒
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首先,阐述了一种铁氧体移相器控制系统,包含波控与移相器驱动电路两部分;然后,由项目设计角度出发,详细介绍了基于FPGA的波控电路设计方法,以及移相器位数与单位脉宽的关系;最后,阐明了移相器工作原理和移相器驱动电路的构成. 相似文献
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H. J. Park D. H. Lee M. Kim D. S. Eom Y-K. Chang 《International Journal of Infrared and Millimeter Waves》2005,26(1):117-124
A compact beam-steering lens design appropriate for millimeter-wave and submillimeter-wave applications is experimentally verified with an X-band test model. The lens achieves coupling to plane-wave beams through arrays of patch antennas placed on its two outer surfaces. The isolation between input and output antennas is accomplished by inserting a metal ground plane in the middle of the lens. The two closest patch antennas on the front and the backside are connected together with microstrip circuits that include switched-line phased shifters and interconnecting vias through the lens substrate. Three different X-band 100-element plane-wave microstrip lenses that use passive delay lines instead of actual phase-shifters were fabricated to successfully demonstrate the beam-steering angles of 20 and 40 degrees. From a separate waveguide measurement on the unit-cell element only, the insertion loss of the lens was estimated to be approximately 3.5 dB with bandwidth of 2% at 10 GHz. 相似文献
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提出了一种应用于高速率无线通信的基于微机械工艺的波束扫描天线阵.基于微机械工艺的空气填充的同轴线结构能提供低损耗的矩形微同轴传输线和馈电网络设计.设计的传输线仿真和测试插入损耗均小于0.18 dB.仿真和测试结果吻合良好.波束扫描天线阵的尺寸为17.5×14.5×0.42 mm3, -10 dB带宽为10 GHz(55~65 GHz), 其带宽覆盖60 GHz标准的全频段.波束扫描角度分别为±35°和±11°.在60 GHz中心频点, 增益分别为11.8 dBi和12.1 dBi. 相似文献
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基于SOPC的波控系统设计展望 总被引:1,自引:0,他引:1
波束控制系统是相控阵雷达的一个重要组成部分,面对具有数千个天线单元的阵面,波控方案的选择尤为重要,它关系到系统的工作速度、性能指标、重量、功耗以及可靠性等诸多方面。根据多年的设计经验,结合相关领域的最新发展,给出了两种基于SOPC的相控阵雷达波控系统设计方案,并分别指出其优、缺点。 相似文献
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