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Description: 近代天线设计
800余页
一、天线辐射原理
二、偶极和单极天线
三、缝隙天线
四、环天线
五、行波天线
六、非频变天线
七、喇叭天线
八、反射面天线
九、透镜天线
十、微带天线
十一、相控阵天线
十二、自适应天线阵
十三、天线阵综合
-Modern antenna design more than 800 pages a second antenna radiation principle, dipole and monopole antenna three or four-slot antenna, loop antenna V. traveling wave antenna of six, seven non-frequency-dependent antenna, horn antenna eight, nine reflector antenna, lens 10 antennas, microstrip antennas 11, 12 phased array antenna, adaptive antenna array 13, the integrated antenna array
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Size: 9606144 |
Author: plantain |
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Description: 3D FDTD simulation of slot antennas
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Size: 3072 |
Author: Mariusz |
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Description: In this paper we investigate a multilayer frequency selective surface (FSS) and its potential use in ultra wideband (UWB) antennas. A complete design and analysis of the FSS with
an example UWB antenna is presented. The multilayer FSS provides an appropriate reflection phase to act as a reflector for
the UWB antenna and is able to enhance its gain. A design guideline for the FSS is presented via a parametric study. Evaluation of the multilayer FSS with a UWB slot antenna shows a significant enhancement of gain across an ultra wideband
(140 ) impedance bandwidth. Its compact configuration provides flexibility for mounting the reflector close to the slot antenna geometry and makes it more suitable for various UWB devices. Simulations show a linear phase response across 4 to 12 GHz band which is sufficient for ultra wideband operation.
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Size: 619520 |
Author: Mohamed Rias |
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Description: ：提出一种基于独立成分分析（ICA）和位隙动态分组技术的超高频（UHF）射频识别（RFID）多标签防碰撞算法。利用ICA 算法实现多目标的同时识别，利用动态位隙标签分组保证阅读器同时读取的标签数少于或等
于其天线数，从而使ICA 工作于非欠定状态-A novel ultra high frequency (UHF) radio frequency identification（RFID）anti-collision algorithm based on
independent components analysis (ICA) and dynamic bit-slot grouping technology was proposed. The ICA algorithm was
used for identifying several tags simultaneously. The dynamic bit-slot tags grouping technology was used for ensuring the
number of tags read by a reader at the same time was less than or equal to its antennas’ number, and enabling the ICA
wouldn’t work in an underdetermined state. Theoretical analysis and simulated experimental results show that the tags identification rate of the proposed algorithm is far more than that of traditional stochastic or deterministic TDMA RFID anti-collision algorithms.
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Size: 222208 |
Author: 小红 |
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Description: 提出两种基于盲源分离方法的标签防碰撞算法，解决标签密集的多天线RFID 系统中的标签碰撞问题。在一个确定的
时隙内， 当发射反向反馈信号的标签数目不超过阅读器天线的数目时， 这些标签可以通过盲源分离算法被阅读器成功识
别；信号，直到所有标签被成功识别出来。仿真结果表明，新算法能使得RFID 系统获得更加高效的吞吐率，能比基于ALOHA
的标签防碰撞算法具有更小的时耗，尤其是当标签数目较大时更加显著。-two tag anti－collision algorithms based on blind source separation (BSS) method are presented to solve the
tag collision problem for dense multi －antennas RFID system in this paper．When the number of tags that transmitting
backscattering signal in a confirmed slot is not exceed the number of antennas of the reader,these tags can be identified
by using blind source separation algorithm．Otherwise,these tags cannot be identified,and they randomly one of other
slots in the same frame and transmit the return signal to the reader until all tags have been identified successfully
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Size: 497664 |
Author: 小红 |
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