A band-notched ultra-wideband slot antenna with controllable notched bandwidth is presented. 提出了一种具有可控阻带带宽的缝隙超宽带天线。
The results indicate that the novel antenna has a wide bandwidth and a good radiation performance. 仿真结果和实验测试结果表明,该天线在很宽的工作频带内具有良好的阻抗特性和辐射特性。
They had to compare with English authors whose quality was as high as their reputation. The backfire antenna is a kind of compact structure, high gain and lower sidelobe antenna, but its bandwidth is limited. 他们一定得与英国名副其实的优秀作家比个高低。背射式天线具有增益高、副瓣低和结构紧凑的特点,但其频带较窄。
A rounded, very thick, tightly curled hair style. The backfire antenna is a kind of compact structure, high gain and lower sidelobe antenna, but its bandwidth is limited. 埃弗罗发式,非洲黑人头一种圆形的,非常浓密且紧凑卷曲的发型背射式天线具有增益高、副瓣低和结构紧凑的特点,但其频带较窄。
The backfire antenna is a kind of compact structure, high gain and lower sidelobe antenna, but its bandwidth is limited. 背射式天线具有增益高、副瓣低和结构紧凑的特点,但其频带较窄。
While multi-band operation is desired from the main antenna, the challenge for handset designers is to cover all additional bands through a single efficient antenna with sufficient bandwidth. 而多波段操作是从主天线需要,为手机设计的挑战是要通过一个包括有足够的带宽效率天线的所有其他乐队。
Will there be a system against buff-bots? A Coupling-Fed Circularly Polarised Microstrip Antenna With Wider Impedance Bandwidth And Higher Low-Elevation Gain 是否有一个阻止高级玩家对低级玩家使用增益魔法的系统?一种改进了阻抗带宽和低仰角增益的双频圆极化微带天线的设计
A Coupling-Fed Circularly Polarised Microstrip Antenna With Wider Impedance Bandwidth And Higher Low-Elevation Gain 一种改进了阻抗带宽和低仰角增益的双频圆极化微带天线的设计
Design of a Microstrip-Fed Quasi-Yagi Antenna with Wide Bandwidth and High Gain 准八木型宽带高增益微带天线的设计
This paper designed and developed a new UHF sensor, namely plane spiral antenna, with effective bandwidth of300~ 3000MHz. 研制了一种用于GIS局部放电检测的宽带特高频外部传感器,其有效带宽为300~3000MHz。
According to the experimental results of material and emulational results of HFSS, the rule that if the material with high permeability and low loss can reduce the size of microstrip antenna and broaden the bandwidth. 在以上材料实验的基础上,结合HFSS软件仿真结果,可以知道如果电子科技大学硕士毕业论文材料的磁导率较高,同时损耗较小,有利于天线尺寸减小带宽增大。
To broaden the antenna's impedance bandwidth and its radiation pattern, a novel printed dipole antenna with reflecting structure of V-shaped ground plane was proposed. 为了扩展天线的阻抗带宽和改善天线的方向性,提出一种采用了地平面反射结构的新型印制偶极子天线。
Measured results show that the 1# antenna has a bandwidth of 12.24% centered at 2.4GHz ( VSWR ≤ 2), and the 2# 16.33% respectively. 实测结果表明:在2.4GHz频段上,1和2天线分别获得了12.24%和16.33%的相对带宽(VSWR≤2)。
A Novel Microstrip Antenna with Large Bandwidth 一种新型的大带宽微带天线研究
In this paper, a broadband annular-slot microstrip antenna is analyzed. This antenna achieves 12% bandwidth for VSWR < 2 when a baffle-board is placed. 对一种宽带微带圆环缝隙天线作了理论和实验研究,在安装反射板时,工作带宽(VSWR<2)达到了12%。
The designing of a novel Ku-band communication microstrip patch antenna with broad bandwidth through the use of stacked patch and the apertures-coupled microstrip as well as its features are studied in this paper. 运用口径耦合的馈电方式及叠层贴片形式设计出一种新型的用于Ku波段通信的宽频带微带贴片天线。
Novel Double-Ring Antenna with Broad Bandwidth Wide Beam and Circular Polarization 一种新式宽带宽方向图圆极化双环天线
A conical spiral antenna of broad bandwidth and circular polarization in Satellite communications 一种用于卫星通信的宽带圆极化圆锥螺旋天线
The results show that this ridged conical TEM horn antenna is excellent for ultra-wide bandwidth and waveform fidelity. 结果表明它具有超宽带和波形保真性。
The other is named as wideband microstrip antenna. Its impedance bandwidth is beyond 80%. 另一种是具有大于80%的阻抗带宽的宽带微带天线,其应用双谐振和其他有利于提高阻抗带宽的办法,使天线的阻抗带宽得到提高。
Simulation results show that resonance occurs at two frequency points and it can work on dual frequency. Compared with normal patch antenna, the bandwidth is broadened to some extent. 仿真结果表明,该天线可以在两个频点处发生谐振,具有双频工作的特性,与普通微带贴片天线相比,在一定程度上展宽了频带宽度。
The band-notched characteristic of ultra-wideband and antenna with extremely bandwidth have bee studied. 对超宽带天线的陷波特性以及极宽带宽的超宽带天线进行了研究。
Only one resonant mode is used in traditional resonant antennas, thus the antenna bandwidth is hard to be improved. 传统的谐振型天线往往只利用了辐射器的一个谐振模式,因此其工作带宽很难有实质性的改善。
On the basis of the size of antenna being determined, the matching networks of wideband whip missile-borne antennas are designed by the method of lumped-element matching, which broadens the antenna impedance bandwidth effectively and achieves the broadband requirements. 在天线尺寸已定的基础上,采用集总元件匹配方法,设计了各频段弹载天线的匹配网络,有效的展宽了天线的阻抗带宽,实现了弹载天线的宽频带要求。
A good agreement between experiments and simulations is found The proposed antenna with wide bandwidth, high gain and wide-angle circular polarization characteristics can be high-quality, high efficiency to achieve signal transmission and reception during the working band. 该天线具有宽带宽、高增益和宽角圆极化等特点,在整个海事卫星通信工作频段能高质量、高效率地实现信号的发射与接收。
The fourth antenna indicates that the bandwidth of the fractal antenna does not change when the sizes of the antenna change proportionally. 第四款天线则表明了分形天线的频带宽度并不随天线尺寸的变化而变化。
How to design miniaturization, high gain dual-band circularly polarized antenna, how to improve the circularly polarized antenna AR bandwidth, are fairly difficult technology. 如何设计小型化,高增益的双频圆极化天线,如何改善圆极化天线的轴比带宽,这些都是具有相当难度的技术。
Studied the impact factors of the monopole slot antenna, and about 11% of the antenna bandwidth was reached, which could cover all UHF RFID frequency range. 研究了影响单极缝隙天线匹配的因素,并获得了较宽的天线带宽,能覆盖UHFRFID的所有频率范围。
The results show the antenna bandwidth can be broadened and the antenna size can be reduced by 37.4% at least by the novel structure. 2. 结果表明,所设计的天线展宽带宽的同时使得天线整体尺寸较常规结构至少缩减37.4%。