查询词典 antennas

The number of chosen transmit antennas is equal to the rank of channel matrix to ensure that the resulting channel matrix is full column rank.

为了保证信道矩阵是列满秩，因此选择出的天线子集中的发射天线数量等于信道矩阵的帙数。

With two transmit antennas, based on lower bound for LS channel estimation, it is shown that the periodic complementary set is optimal over frequency-selective fading channels.

针对基于循环前缀的单载波系统，提出了联合Alamouti-like STBC和最小均方信道估计方案。

The research on conformal antennas performance is a very active research field, and it is the important technique in the future intelligent stealth technique and weapon system.

共形天线的性能研究是一个非常活跃的研究领域，也是未来电子战争中隐身技术的重要部分。

The conclusions. of this paper can be used for engineering design of V conical antennas.

该结果对非轴对称天线的分析和V锥天线的工程设计有参考意义。

Two novel integrated slotantennas are developed by adopting the two novel transition circuits of microstripline to slot line and coplanar waveguide to slot line.The measure results show the ul-tra-wide bandcharacteristic of the two kinds of integrated slot antennas.

采用微带线到槽线，共面波导到槽线的两种新颖UWB过渡方式研制出了两种新型的UWB印刷集成天线，实验测量结果显示了这两种天线的UWB特性。

Recently for the applications such as modern communications, synthetic aperture radars , electronic detect, electronic counterplot, and radar polarmeters, etc., the dual-polarization and polarization-agile functions of antennas are demanded and their optimization designs of systems are required. Their theory and further applications are being in the process of developing.

近年来在现代通信系统、合成口径雷达、电子探测、电子对抗、极化测量等应用中，要求天线具有双极化、变极化功能，而且整个系统需要优化设计，其理论与应用均处于发展之中。

Traditionally, bigger marine satellite antennas had cumbrous weight and complicated cable installation problems.

传统上，更大的海洋卫星天线的累赘重量和复杂电缆安装的问题。

Analysis on the cumulative distribution of probability in capacity for IDMA-OFDM system is performed, and a close representation on system spectrum efficiency of IDMA-OFDM system is obtained, under the assumption of large system regime, when many receive antennas are used.

分析了IDMA—OFDM系统的容量的累积概率分布，在接收天线较多的情况下，以大系统机制假设为前提，推导出一个闭合的IDMA—OFDM系统频谱效率的表达式。

Finally, We also study coupling effects between two cylindrical leaky wave antennas and learn the effects on propagation constants.

最后，我们也探讨圆柱型泄漏波天线之间的耦合效应对传播常数的影响

Compared to other conformal antennas, the cylindrically conformal microstrip antenna has a relatively simple structure.

圆柱共形微带天线是共形天线中结构较为简单的一种。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐