a first conductive antenna surface; a first filter having a first interface coupled to both the first feed point and the first conductive antenna surface, and having a second interface coupled to the second feed point; wherein the first filter is configured to attenuate far-field signals passing...
ANTENNA FOR NEAR FIELD AND FAR FIELD RADIO FREQUEN 优质文献 相似文献 参考文献 引证文献UHF RFID Reader Antenna for Near-Field and Far-Field Operations In this letter, a radio frequency identification (RFID) reader antenna designed for near-field and far-field operation at the European ultrahigh ...
A planar near-field to far-field transformation using an equivalent magnetic current approach A method is presented for computing far-field antenna patterns from near-field measurements. The method utilizes near-field data to determine equivalent ma... P Petre,TK Sarkar - IEEE Antennas & Propagatio...
ntenna Measurements Efficient Near-Field to Far-Field Transformation Techniques for Antenna MeasurementsEfficient Near-Field to Far-Field Transformation Techniques for Antenna MeasurementsFernando LasHerasT.K. Sarkar
a既可以在快餐店吃又可以带回家吃 Both may eat in the fast-food restaurant and may bring back to the family to eat[translate] ain the ‘near field’ of the antenna. How far does the near field extend? 在`在领域’的天线附近。 多远近的领域延伸?[translate]...
斜置平面天线阵的近场-远场方向图分析 Analysis of the near-field-far-field pattern of tilted planar antenna arrays 文档格式: .pdf 文档大小: 393.03K 文档页数: 8页 顶/踩数: 0/0 收藏人数: 0 评论次数: 0 文档热度: 文档分类: 幼儿/小学教育--教育管理 ...
Antenna arrayspherical harmonic transformassociated Legendre functionmethod of momentThe simulation or measurement of large antenna arrays requires a spherical near field to far field (NFFF) transform, which suffers from the underflow when calculating the high degree associated Legendre functions by double...
Metasurfaces, promising technology exemplified by their precise manipulation of incident wave properties and exquisite control over electromagnetic field propagation, offer unparalleled benefits when integrated into radar systems, providing higher resolu
UHF RFID near field reader antenna for item level applications A UHF band near-field antenna using microstrip lines and stubs for tagging stacked tags in a smart table is presented. It is shown that a suitable near-fie... JS Kim,WK Choi,GY Choi - 《Microwave & Optical Technology Letters》...
4) Far-Field antennas measurement system 天线远场测量5) near field antenna measurements 近场天线测量 1. The larger sampling spacing is advantageous to enhance the measurement and data processing efficiencies for near field antenna measurements. 近场天线测量中 ,采用大的采样间隔 ,有利于提高测试和...