antennas的例句大全

The basic concept, working principle and technical classification of smart antenna are introduced, including the description of principles and algorithms of the switched beam and tracking-beam smart antennas. The impact of the smart antenna technology on the cellular wireless communication system is also discussed.

文章简述了智能天线的概念、原理和分类，包括预多波束和自适应波束两种智能天线的原理和算法，论述了智能天线技术对移动通信系统性能的影响。

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The antenna system consists of three parts: an assembly of the omnidirectional telemetry and command antennas, a directive communications antenna and a three channel noncontacting rotary joint.

该天线系统包括三部分：全向遥测遥控天线组件，定向通信天线和三信道无接触旋转关节。

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This coding can produce the airspace and temporal correlation between the signals that are transmitted by many antennas and every time period.

该编码在多根发射天线和各个时间周期的发射信号之间能够产生空域和时域的相关性。

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During the procedure, from PN code domain, spatial domain, temporal domain and frequency domain, the method can simultaneously suppressed the MAI, ISI and Doppler frequency interference in the channel, which greatly improved the interference suppression ability of smart antennas.

在算法处理过程中，可同时从码域、空域、时域和频域对信道中的多址干扰、符号间干扰和多普勒频率干扰进行抑制，大大提高了智能天线抗干扰性能。

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However, due to size, cost or hardware complexity limitations, it may be difficult for a wireless terminal to support multiple antennas.

然而，由于功率、体积或硬件复杂度等限制，在无线终端实现多天线较为困难。

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Multiple Access Protocol for Mobile Ad Hoc Network with Smart Antennas

移动ad hoc网络中应用智能天线的多址协议及其性能分析

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Analysis of Thick Cylindrical Wire Antennas and Wire Antennas Near An Interface by the Method of Moments

粗天线和半空间界面附近线天线的MOM分析

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By adopting an analysis model close to the actual sleeve monopole antenna, a new efficient and accurate modeling for moderately thick cylindrical wire antennas, the accuracy is greatly improved.

采用与实际天线较为接近的矩量法分析模型和一种新的粗圆柱线天线快速精确计算模型，大大提高了分析计算的精度；

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A new efficient and accurate modeling for moderately thick cylindrical wire antennas with a so called 'equal length dividing method' and a constant gap voltage source model is established to greatly improved the accuracy.

文中采用一种新的粗圆柱线天线快速精确计算模型，提出了所谓的等长分段方法，并使用了一种固定间隔电压源模型，大大提高了分析计算的精度；

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An Optimization Method for Thinned Array Antennas

稀疏天线阵的最优化方法

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A subspace-based blind channel estimator has been developed for space time coding orthogonal frequency division multiplexing ( STC-OFDM) system with two transmit antennas and two receive antennas.

针对使用2个发射天线和2个接收天线并且采用循环前缀的空时编码正交频分复用系统（STC-OFDM），提出了一种信道盲估计算法，并给出信道可被辨识的条件。

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It can explore the spatial diversity gain and time diversity between the antennas.

它能够挖掘天线间的空间分集、时间分集。

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As TD-LTE system is based on time division duplex, the uplink and downlink channel reciprocity can be employed for smart antennas.

由于TD-LTE系统是以时分的方式实现，可以利用上下行信道的互易性更好的发挥智能天线的优势。

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This system uses some key technology such as Low Chip Rate, Time Division Duplex, Smart Antennas and Joint Detection. The advantage of TD-SCDMA system includes: high frequency spectrum efficiency, flexible frequency using, applying to data service, low cost and so on.

该系统采用了低码片速率、时分双工、智能天线、联合检测等关键技术，具有频谱利用率高、频谱使用灵活、适合开展数据业务、系统成本低等特点。

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The simulation results show that the time domain response and radiation waveform of bow-tie antennas with distributing resistively loaded are better than conventional bow-tie.

结果表明，与标准蝶形天线相比，该天线具有更好的时域波形和响应特性。

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Both the two-element antennas have achieved dual-polarized radiation as well as highly complementary patterns, which means they can realize polarization and pattern diversity at the same time, while the isolation between the two ports remains high.

这两种两单元天线结构在实现双极化辐射的同时，单元方向图彼此互补，即同时具有极化分集与角度分集特性，且端口隔离度较高。

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A New System Integrated of Communication and Radiolocation with Four Antennas Space time Modulation

一种新颖的四天线时空调制通信定位综合化系统

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2D energy window technique is used to combine multipath energy from multiple antennas and interpolation to improve timing precision. Simulation result indicates this scheme has a good detection performance.

该方案采用二维能量窗技术对多天线和多径能量进行合并，并利用插值技术提高定时同步的精度，具有较好的检测性能。

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Some solutions to attain dual frequency operation of patch antennas are reported in this paper, such as Orthogonal mode, Multi patch, Reactively loading and some others.

总结了贴片天线的主要双频解决方案，包括正交模、多贴片、电抗性加载以及空气缝隙双频贴片等方式，并提出了相应双频贴片天线的适用场合。

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Most of these base stations to higher power and higher gain antennas to build district to achieve the target service area coverage.

这些基站大多以较大的功率和较高的增益的天线构建小区实现对目标服务区域的覆盖。

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