查询词典 antenna array

Now our main products are: PTX-LCD, TEX-LCD/S, BLUES30NV serial FM exciters, TX serial 1-10KW FM transmitters, TX serial 3-20KW hot plug-in transmitters, AJ1F serial vertical polarization FM antenna, DPA serial panel FM antenna, star-point or bridge style FM multiplexor, digital STL microwave link, professional receivers and any TV related products.

公司主要产品有：PTX-LCD/S，TEX-LCD/S，BLUES系列调频激励器，TX系列1-10KW调频发射机，TX系列3-20KW热插拔数字调频发射机，AJ1F系列各种功率等级的垂直极化调频天线，DPA系列带反射板偶极子调频天线，星型，桥型系列大功率调频多工器，数字STL微波传输系统，专业调频收转机等及所有电视设备产品

And the channel composed of the new radio induction system for communication is different from the parameter-constant channel and the traditional parameter-changing channel, its parameter is decided by the mutual induction between its antenna and induction-cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter. The channel composed of the new radio induction system is a new parameter-changing channel independently of time for communication.

而且，由新型无线感应系统组成的信道既不是恒参信道，也不是一般目前所知的变参信道，其信道传递函数的幅值只与信号的频率有关，与系统中天线和感应电缆之间的互感和天线的位置有关，而与时间无关，其信道传递函数的相位只与天线的位置有关，而与时间无关，由新型无线感应系统组成的信道是一种不随时间变化的新型变参信道。

So it holds a ideal ability to anti-interference and has 2 scalar level resolution in location and measuring velocity than traditional radio induction technology. And the channel composed of the new radio induction system for communication is different from the parameter-constant channel and the traditional parameter-changing channel, its parameter is decided by the mutual induction between its antenna and induction-cable, by the location of its antenna, by the signal frequency passing through, its parameter has nothing to do with the time parameter.

而且，由新型无线感应系统组成的信道既不是恒参信道，也不是一般目前所知的变参信道，其信道传递函数的幅值只与信号的频率有关，与系统中天线和感应电缆之间的互感和天线的位置有关，而与时间无关，其信道传递函数的相位只与天线的位置有关，而与时间无关，由新型无线感应系统组成的信道是一种不随时间变化的新型变参信道。

The nominator of Equation 1 is multiplied by the G M factor representing the relative antenna gain of the main beam compared to the sector antenna gain.

等式1的提出者将其再乘以 GM 因子后来表示；较之扇形天线增益而言的，主要波束的相对天线增益。

And multiobjective optimization of complex structure with the help of neural networks and uniform experiment design, etc. As an example to illustrate the theory of this thesis, Robust design of a 10m antenna reflection part with circular paraboloid surface is proceeded. Antenna attracted people's research in these years because it is structure with very high precision.

作为实例，论文中对某10m圆抛物面天线反射体进行了健壮性设计，得到了原问题的健壮最优解，不仅实现了原系统的性能优化，同时使天线的性能在受到可控因素较大的范围的变异时所产生的变异达到最小，实现了系统的健壮性。

A UWB planar trapezoidal dipole antenna with a simple feeding structure is proposed. In our design, the printed asymmetric dipole antenna is center-fed by a transmission line which consists of two parallel strip lines.

本论文以一种简单的馈入结构来设计具有超宽频特性的梯型偶极天线，即是以两平行带线组合成的传输线，自中心馈入至非对称性的梯型偶极天线。

The effects of the ground plane＇s extending angle and position on the antenna＇s returning loss and radiation pattern were investigated to obtain the optimized antenna＇s design parameters.

分析地平面延伸角度和延伸位置对天线输入反射损耗和辐射方向图的影响，得到优化的天线设计尺寸参数。

A small planar antenna combined with a printed circuit board. First and second ground layers formed on top and bottom surfaces of the dielectric layer, respectively, corresponding to each other; and a first antenna unit which extends from a side of each of the respective first and the second ground layers, for radiating a first polarized wave with the application of current.

一种与印刷电路板组合的小型平面天线，在具有预定厚度的介电层的顶表面和底表面上形成相对应的第一和第二接地层，第一天线单元和第二天线单元分别以预定图形从第一和第二接地层的一侧伸出，分别通过施加电流来辐射正交的第一极化波和第二极化波。

This paper analyses and implements a kind of UHF Near-Field RFID Reader Antenna. Moreover, it calculates and simulates the impedance and radicalization feature of this antenna theoretically.

本文设计并实现了一种RFID阅读器近场耦合天线，并对该天线的阻抗特性和辐射特性进行了理论计算和仿真。

With rapid development of space technology and continual updating of communication device, the requisition for antennas becomes higher and higher. General method of Far-Field measurement of antenna has much difficulty in its implementing, even powerless sometimes. So people aspire after a way to calculate radicalization field of antenna by measuring its near field.

随着空间技术的迅速发展以及通信设备的不断更新，对天线的要求越来越高，常规的远场测量天线的方法由于实施过程中存在许多困难，有时甚至无能为力，于是人们就渴望通过测量天线的近场而计算出其辐射场的方法。

Listen,point and check your answers.

听，指出并且检查你的答案。

Warming needle is one of effective treatment methods for knee arthralgia aggravated by cold,and it is simple,safety,so it should be developed in clinical acupuncture and moxibustion extensively.

但以本院科针灸门诊在2005年1月—2006年6月期间共收治膝痛患者100余例，经过临床的诊断后，其中施以温针治疗的48例，疗效显著，报道如下。1临床资料本组病例48