查询词典 block antenna

This invention relates to a circular small UHF antenna with high dielectric constant and its processing method, among which, the UHF antenna characterizes that 1,it is composed of a radiation plate, a feed point and a medium chip, 2, the radiation plate is closely adhered to the top surface of the medium chip, the bottom surface is the metal ground face, the chip and the radiation plate is rectangle or square, 3, the feed point is at the 1/3 place of the diagonal line of the rectangular or square radiation plate apart from the top point.

本发明涉及一种高介电常数圆极化小型超高频天线及其制作方法。UHF天线特征在于(1)所述的超高频天线是由辐射贴片、馈电点和介质基片组成；(2)辐射贴片紧贴在介质基片的上表面，介质基片的下表面为金属接地面；介质基片和辐射贴片呈矩形或正方形；(3)馈电点位于矩形或正方形的辐射贴片的对角线离顶点的1/3处。其制作方法是采用ε≥38高均匀性陶瓷基片，再结合丝网印刷技术完成厚膜焙银后形成辐射贴片，然后再圆极化。具有制作工艺成熟、体积小及使用灵活等特点。

In view of the development about the certain airborne radar antenna array,considering the structural features of antenna array,analyse the cruces in manufacturing of feed cavity and radiant plate,and present the corresponding solution by mainly dealing with precise positioning style,delicate clamp design,error distribution and compensation method,high speed machining technology design,machining simulation and program optimizing.

某机载雷达平面裂缝阵列天线的单面阵如图1所示。该面阵布置多路裂缝线源，共分布384处长度各不相同的辐射裂缝，每一路线源均由脊型波导口单独馈电。面阵由辐射板和馈电腔两个零件组成，采用整体钎焊成形。线源结构为非对称单脊共线形式，即在普通单脊波导的两侧与辐射裂缝相对应的位置上布置不对称的凹台。

Under the symmetry antenna structure, we use fork-shaped feeding strip-line design to cause the rectangular printed monopole antenna to be possible to achieve ultra-wideband operation.

并在接地面与辐射金属片对称等大小的天线结构下，利用叉型带线馈入之设计，使得矩形印刷式单极天线可达到超宽频之操作。

A small size MMW CP microstrip antenna is designed using sequential phase rotation method in this paper.The simulation result shows that this antenna has wider impedance bandwidth and axial ratio bandwidth.

采用连续相位旋转法设计了一种四单元的小尺寸的毫米波圆极化微带天线阵列，仿真表明：该天线具有较宽的阻抗带宽和轴比带宽。

Jack, S-Indicator, Bass, Treble, 6 Memories, Sweep, BFO, Keypad, Clock-Timer, Tilt Stand, Up-Down Tuning, Sleep, Antenna Trimmer, Antenna Terminals, Record Jack, Dial Lamp, Dial Lamp Switch, Rec.

杰克，第S -指标，低音，高音， 6月的回忆，打扫， bfo ，键盘，时钟计时器，倾斜的立场，直至向下微调，睡眠，微调天线，天线终端，记录千斤顶，拨号灯，拨号灯开关，接收。

The hybrid GA combined with multi-port microwave network parameters is used to analyze the electric properties of multiple-tuned antenna system. The electric property of each working state of the antenna system is calculated.

采用混合遗传算法结合多端口等效微波网络参数的方法，对多组倒L形山谷天线进行多路调谐的研究，求解了天线系统在各个工作状态下的电参数。

This detector systems is fully self-contained in a sleek aluminum case and includes the transmitter, transmitting antenna with stand, receiver with neck strap,"SCAN GUN" receiving antenna, rechargeable gel cell battery with 110V charger, marker flags and user's manual.

该探测系统是完全装置在一个铝箱子里，里面包含传输器，传输天线，接收器，扫描枪接收天线，110伏的充电电池，标记小旗子和用户手册。

The ML-90 Magnetic Loop Antenna is without doubt the best type of antenna for NVIS (near vertical incidence skywave) operations.

目前从世界范围看，唯一能够实现NVIS传播的就是单电磁环天线，也称为半环天线。

It is obvious that 3D corner reflector antenna could be also adjusted for offset parabolas with a lower F/D if the diagram could be widen in vertical plane and narrowed in horizontal plane so that they are approximately equal to each other and at the same time retain all other good characteristics of this antenna.

显然，3D角反射器天线也必须调整才能用于低F/D的偏馈抛物面，如果它的垂直方向图必须宽，水平方向图必须窄，那么垂直和水平两者之间必须大体平衡，而同时要保持天线的其它所有良好特性。

The antenna to connect to the radio like the Motorola speaker mic we sent you and not with the wire to radio antenna jack.

连接的天线到象Motorola报告人mic的收音机我们派遣了您和不有导线的到无线电天线起重器(在收音机的边的被铸造的部分)。

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。