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2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)最新文献

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High gain antenna design and doubler rectifier for microwave power transfer 用于微波功率传输的高增益天线和倍频整流器设计
S. Ahmed, Z. Zakaria, M. N. Husain, I. Ibrahim, N. Shairi, A. Alhegazi
This paper presents the designs of an antenna and rectifying circuit that operate at frequency of 2.45 GHz. The antenna is designed based on aperture coupling technique to collect high amount of RF signals. The doubler rectifying circuit with two HSMS286B fast switching diodes is designed to convert the AC signals captured by the antenna to DC voltage. The antenna and rectifier designs are simulated using 4.4 permittivity low-cost FR-4 substrate. The antenna can achieve a gain of 7.73 dB, return loss less than −30 dB and bandwidth of 216 MHz. At an input power of 20 dB, the rectifying circuit can achieve an output DC voltage of 7 V. The proposed antenna and rectifier designs have the benefits of high performance and low cost that make them applicable for microwave power transfer applications.
本文介绍了一种工作频率为2.45 GHz的天线和整流电路的设计。该天线是基于孔径耦合技术设计的,用于采集大量的射频信号。设计了两颗HSMS286B快速开关二极管的倍频整流电路,将天线捕获的交流信号转换为直流电压。采用4.4介电常数低成本FR-4衬底对天线和整流器设计进行了仿真。该天线的增益为7.73 dB,回波损耗小于−30 dB,带宽为216 MHz。在输入功率为20db时,整流电路可实现输出直流电压为7v。所提出的天线和整流器设计具有高性能和低成本的优点,使其适用于微波功率传输应用。
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引用次数: 3
A compact microstrip patch antenna with bandwidth enhancement 一种具有增强带宽的紧凑型微带贴片天线
Min Feng, Jin-Dong Zhang, Wen Wu
In this paper, a compact microstrip patch antenna with bandwidth enhancement and harmonic suppression has been presented. The radiating patch is coupled and excited by a microstrip stub which is a non-radiating quarter wavelength resonator. Because the coupling quarter wavelength resonator operates at another resonant frequency close to center frequency of the radiating patch, the bandwidth is enhanced effectively. The proposed antenna acquires 6.1% bandwidth (from 4.73 to 5.03GHz), with a satisfactory radiation performance within the bandwidth and the harmful higher order radiating modes have been obviously suppressed. Moreover, the single quarter wavelength resonator makes it more flexible to excite patch and easier to be arranged in arrays for its compact and simple structure.
本文提出了一种具有带宽增强和谐波抑制功能的小型微带贴片天线。辐射贴片由非辐射四分之一波长谐振器的微带短段耦合和激发。由于耦合四分之一波长谐振器工作在接近辐射贴片中心频率的另一个谐振频率上,因此有效地增强了带宽。该天线获得了6.1%的带宽(4.73 ~ 5.03GHz),在带宽范围内具有满意的辐射性能,并且明显抑制了有害的高阶辐射模式。此外,单四分之一波长谐振器结构紧凑、简单,使其激发贴片更灵活,更易于排列。
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引用次数: 6
Optimization design of skin antenna based on Bayesian optimization 基于贝叶斯优化的蒙皮天线优化设计
Haitao Li, Jinzhu Zhou, L. Kang, Zhanbiao Yang, Mei Wang
Skin antenna consists of microstrip antennas, skin and honeycomb, and it is widely used in wireless applications of air, water and vehicles. Skin antenna is not only a load-bearing skin structure, but also a microwave antenna which can receive or send electromagnetic waves, and the skin and honeycomb were designed to bear the force. Thus the thickness of them has a large impact on the capacity of the bearing. In order to quickly determine the size of the antenna element and the thickness of skin and honeycomb, this paper presents a fast optimization method for the electromechanical co-design of skin antennas. First, the length and width of the antenna element are taken as the optimization variable, and the return loss is used as the optimization target when the antenna unit is optimized. Then the gain of the antenna array is used as the optimization target by optimizing the thickness of each layer of skin and honeycombs to realize the optimization design of skin antenna array. The return loss and the upper and lower boundary of the design variable range are taken as constraint conditions. The final size of the skin and the honeycomb is determined by using Bayesian surrogate model. Finally, the simulation results are compared with the measured results, and experiment results have revealed the feasibility and effectiveness of the optimization method for skin antenna design.
蒙皮天线由微带天线、蒙皮天线和蜂窝天线组成,广泛应用于空气、水和车辆的无线应用中。蒙皮天线不仅是一种承重的蒙皮结构,而且是一种可以接收或发送电磁波的微波天线,蒙皮和蜂窝被设计为承受力。因此,它们的厚度对轴承的承载力有很大的影响。为了快速确定天线单元的尺寸以及蒙皮和蜂窝的厚度,提出了一种蒙皮天线机电协同设计的快速优化方法。首先,以天线单元的长度和宽度为优化变量,以天线单元优化时的回波损耗为优化目标;然后以天线阵列的增益为优化目标,通过优化各层蒙皮和蜂窝的厚度,实现蒙皮天线阵列的优化设计。以回波损耗和设计变量范围的上下边界为约束条件。采用贝叶斯替代模型确定皮肤和蜂窝的最终尺寸。最后,将仿真结果与实测结果进行了比较,实验结果表明了该优化方法用于蒙皮天线设计的可行性和有效性。
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引用次数: 3
Development of wide bandwidth tripler based on composite right/left-handed transmission lines with embedded HBV for 0.3 THz 基于嵌入HBV的0.3太赫兹左右复合传输线的宽带三倍频器的研制
Jie Huang, Guoqing Xu
This work presents a high-performance (230–345 GHz) frequency tripler, featuring a combination of heterostructure barrier varactor (HBV) and composite right/left-handed transmission lines (CRLH TLs). The tripler was designed on the InP substrate. The symmetric capacitance-voltage HBV from Chalmers, which is designed to generate only odd harmonics, is used to simplify the design of the tripler. The CRLH TL has a balanced structure and a high-pass frequency response characteristic. The simulated result shows that the developed tripler exhibits a maximum output power of 38.9 mW at the third harmonic (267 GHz), a corresponding conversion loss of 13 dB, and a maximum 3 dB bandwidth of 23.6 %.
本研究提出了一种高性能(230-345 GHz)三倍频器,其特点是结合了异质结构势垒变容管(HBV)和复合右/左传输线(CRLH TLs)。在InP衬底上设计了三倍频器。Chalmers的对称电容电压HBV只产生奇次谐波,用于简化三倍器的设计。CRLH TL具有平衡结构和高通频率响应特性。仿真结果表明,所研制的三倍频器在三次谐波(267 GHz)下的最大输出功率为38.9 mW,相应的转换损耗为13 dB,最大3 dB带宽为23.6%。
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引用次数: 0
Performance analysis of ML-based DOA estimation algorithm in bistatic MIMO radar system 双基地MIMO雷达系统中基于ml的DOA估计算法性能分析
J. Paik, Joon-Ho Lee
This paper proposes a new method to attain explicit expressions of some quantities associated with performance analysis of the maximum likelihood (ML) direction-of-arrival (DOA) algorithm in the presence of an additive Gaussian noise on the antenna elements. The motivation for the paper is to make quantitative analysis of the ML DOA algorithm in the case of multiple incident signals. We present a simple method to derive closed-form expression of estimation error of DOA estimate based on the Taylor series expansion. We address the performance analysis of the ML angle-of-arrival (AOA) estimation algorithm in this paper. We discuss the estimation of azimuth of multiple incident signals using bistatic multiple input multiple output (MIMO) radar model. Based on the Taylor series expansion and approximation, we get explicit expressions of estimation error of all incident signals. The validity of the derived expressions is shown by simulation results.
本文提出了一种新的方法,在天线单元加性高斯噪声存在的情况下,求出最大似然到达方向(ML)算法性能分析中一些物理量的显式表达式。本文的动机是对多事件信号情况下的ML DOA算法进行定量分析。提出了一种简单的基于泰勒级数展开的DOA估计误差的封闭表达式。本文对机器学习的到达角估计算法进行了性能分析。本文讨论了用双基地多输入多输出(MIMO)雷达模型估计多个入射信号的方位。基于泰勒级数展开和近似,得到了所有事件信号估计误差的显式表达式。仿真结果表明了推导式的有效性。
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引用次数: 1
A 1–4 GHz low noise amplifier in 0.5-μm E-Mode InGaAs pHEMT technology 一种采用0.5 μm E-Mode InGaAs pHEMT技术的1 - 4ghz低噪声放大器
Hairui Song, Shu Yu, Yu-feng Guo, Shanwen Hu
This paper presents a 1–4 GHz low noise amplifier (LNA) for broadband communication system. A capacitive feedback gain compensation circuit is proposed to increase the high frequency gain. The LNA exhibits a voltage gain of 20–23 dB, a noise figure of 1.8–2.3 dB during 1–4 GHz frequency range. The input S11 is −13dB∼-10dB and the output S22 is −18dB∼-10dB. The proposed LNA is realized in 0.5-μm Gate-Length E-Mode InGaAs pHEMT Process and occupies 0.96 mm2 area. The power consumption is 250 mW with 5 V supply.
提出了一种用于宽带通信系统的1 - 4ghz低噪声放大器。为了提高高频增益,提出了一种电容反馈增益补偿电路。在1-4 GHz频率范围内,LNA的电压增益为20-23 dB,噪声系数为1.8-2.3 dB。输入S11为−13dB ~ -10dB,输出S22为−18dB ~ -10dB。该电路采用门长为0.5 μm的E-Mode InGaAs pHEMT工艺实现,面积为0.96 mm2。功耗为250mw, 5v供电。
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引用次数: 4
The polarization characteristics of the half space reflected wave: Linear polarized incident wave case 半空间反射波的偏振特性:线偏振入射波情况
Le Cao, Jingyi Du
As the reflection coefficients of the horizontal and vertical polarized electromagnetic waves are different, the polarization state of the reflected wave changes compared to the incident wave. The polarization characteristics of the reflected wave of lossless and lossy half space are studied in this paper, and the characteristics of the reflected wave polarization state on the Poincare Sphere are given and analyzed. The results of this study are expected to provide reliable theoretical basis for the introduction of the incident source in half space electromagnetic problem.
由于水平和垂直极化电磁波的反射系数不同,反射波的偏振状态相对于入射波发生了变化。研究了无损耗和有损耗半空间反射波的偏振特性,给出并分析了庞加莱球上反射波偏振态的特征。研究结果有望为半空间电磁问题中入射源的引入提供可靠的理论依据。
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引用次数: 0
Fast simulations of electromagnetic scattering from 1-D rough surface through adaptively modified characteristic basis function method 基于自适应修正特征基函数法的一维粗糙表面电磁散射快速模拟
J. Wang, An-qi Wang, Zhixiang Huang
In this paper, the Adaptively Modified Characteristic Basis Function Method (AMCBFM) is proposed to fast simulate the electromagnetic scattering from one-dimensional rough surface. Firstly, the Primary Characteristic Basis Functions (PCBFs) arising from the self-interaction within the self-block are generated, and the coefficients of the basis function and the first current of each block are obtained. Secondly, the Secondary Characteristic Basis Functions (SCBFs) which account for the mutual coupling effects from the other distinct domains are obtained by using the inter-impedances. The higher SCBFs can be also derived through the same way. Finally, a new precision method is applied to control the current error, which is used to determine the order of the higher order SCBFs. By Comparing numerical simulations through the AMCBFM and the traditional Characteristic Basis Function Method (CBFM), the AMCBFM can guarantee the accuracy and void higher iteration, and the convergence performance is better than the CBFM in the lower order SCBFs. Moreover, by comparing numerical results of the AMCBFM and the method of moments (MoM), the AMCBFM can effectively reduce the size of the impedance matrix, and significantly reduce computing time.
为了快速模拟一维粗糙表面的电磁散射,提出了自适应修正特征基函数法(AMCBFM)。首先,生成自块内部自相互作用产生的初级特征基函数(pcbf),得到基函数系数和各块的第一电流;其次,利用内部阻抗得到了考虑其他不同域相互耦合效应的二次特征基函数(SCBFs);通过同样的方法也可以推导出更高的scbf。最后,采用一种新的精度方法来控制电流误差,并利用电流误差来确定高阶单导阵的阶数。通过与传统的特征基函数法(CBFM)的数值仿真比较,AMCBFM可以保证精度,不需要进行更高的迭代,并且在低阶scbf中收敛性能优于CBFM。此外,将AMCBFM与矩量法(MoM)的数值结果进行比较,发现AMCBFM可以有效地减小阻抗矩阵的大小,并显著缩短计算时间。
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引用次数: 0
Designing band notch features in ultra-wideband antenna 超宽带天线带陷波特性设计
Mian Muhammad Kamal, Inam Ullah, A. Ashraf, N. Ullah
Due to need of high data rate and high speed in wireless communication Ultra-wideband technology comes out as one of the emerging technology that fulfill the requirement of the high speed in wireless communication because of its ultra-wide bandwidth. In order to implement Ultra-wideband technology many challenges comes into account. The first challenge which is most important one is to get an antenna that successfully operate in spectrum of ultra-wideband technology. Second challenge is the electromagnetic interference with the existing narrow band systems. Since UWB technology spectrum ranges from 3 GHz to 11 GHz, in this band also there exist a Wireless Local Area Network bands from 5.15 GHz to 5.35 GHz and 5.725 GHz to 5.825 GHz. So UWB System interfere with WLAN system which needs to eliminate this electromagnetic interference. The band rejection feature are obtained by etching a rectangular slot near the feed line of the antenna for good coupling. The center frequency of the notch frequency depends upon the length and width of the rectangular slot and by using a specific length and width of the rectangular slot a band notch center frequency is obtained at 9 GHz. The bandwidth of notch band depends upon the gap in the rectangular slot. By increasing the gap, bandwidth of the notch increases and vice versa. An optimal gap is used in the rectangular slot to obtain a bandwidth of notch band from 8.5–9.5 GHz.
由于无线通信对高数据速率和高速的要求,超宽带技术以其超宽带的带宽成为满足无线通信高速要求的新兴技术之一。为了实现超宽带技术,需要考虑许多挑战。第一个挑战也是最重要的一个挑战是获得一个在超宽带技术频谱上成功运行的天线。第二个挑战是现有窄带系统的电磁干扰。由于UWB技术频谱范围为3 GHz至11 GHz,因此在该频段中还存在5.15 GHz至5.35 GHz和5.725 GHz至5.825 GHz的无线局域网频段。因此UWB系统会对WLAN系统产生干扰,需要消除这种电磁干扰。通过在天线馈线附近刻蚀一个矩形槽来获得带抑制特性,从而获得良好的耦合。陷波频率的中心频率取决于矩形槽的长度和宽度,通过使用矩形槽的特定长度和宽度,可以获得9ghz的频带陷波中心频率。陷波带的带宽取决于矩形槽中的间隙。通过增加间隙,陷波的带宽增加,反之亦然。在矩形槽中采用最佳间隙,可获得8.5-9.5 GHz的陷波带带宽。
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引用次数: 5
Summary of electrostatic sensitivity of EED and anti-electrostatic measures EED的静电敏感性及防静电措施综述
Maosong Yang, Yongwei Sun, Lidong Zhou
Today a large number of electrical products and electrostatic sensitive ammunition have been used in weapons systems. With the modernization of weapons and equipment, electrostatic hazards become increasingly serious. The fundamental reason is that the composition of these equipment, electrical products, agents is caused by the electrostatic discharge sensitivity. The electrostatic hazards of the electro-explosive devices and some protective measures have been discussed. It has certain reference value for the system to study the electrostatic sensitivity test and the electrostatic protection.
今天,大量的电气产品和静电敏感弹药已被用于武器系统。随着武器装备的现代化,静电危害日益严重。其根本原因是这些设备、电器产品的成分、药剂是造成静电放电的敏感性。讨论了电爆炸装置的静电危害及防护措施。对系统的静电灵敏度测试和静电防护的研究具有一定的参考价值。
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引用次数: 1
期刊
2017 7th IEEE International Symposium on Microwave, Antenna, Propagation, and EMC Technologies (MAPE)
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