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- direct aperture antenna 直接开口天线
- The proposed EBG-backed circularly polarized aperture antenna is designed to operate in X- and V-band frequencies. 本论文将所提出的覆背式电磁能隙圆极化槽孔天线分别设计在X频带及V频带上。
- The full-wave spectral-domain analysis is proposed to parametrically study an aperture antenna with a coplanar waveguide feed. 摘要:在本计画中,我们应用了全波频谱分析法来精确地测量利用共面波导管馈入的孔径天线效能。
- The simple formulae of fast calculating aperture antenna directivity and gain are derived using antenna beamwidths. Applied range of these formulae are analyzed and discussed. 导出了用天线方向图的半功率波束宽度快速计算口径天线方向性系数和增益的简单表达式,分析讨论了这些公式的应用范围。
- Characteristics of the developed rectangular aperture antenna and slit-loaded circular-tapered monopole antenna are then examined in time and frequency domain at certain plane cuts. 本论文所提及之矩形槽孔天线与狭缝槽负载之圆形渐开单极天线被用来分析其在某些平面切面在频域和时域的特性。
- By combining backfire principle and focusing mechanism in a single antenna system the backfire feed Cassegrain antenna makes a sm all aperture antenna having the electrical performance of a large Cassegrain antenna. 背射馈源卡氏天线将背射原理和聚焦原理综合于同一个天线系统之中 ,这就使小口径天线 (与天线波长比 )具有大型卡氏天线的电性能。
- The LEICA D VARIO-ELMARIT 14-50mm/F2.8-3.5 lens (also being introduced today) is equipped with an aperture ring, in addition to a focus ring and zoom ring, for easy, direct aperture setting. LEICA D VARIO-ELMARIT 14-50 的毫米/F2.;8-3
- fundamental theory of aperture antenna 面天线基本理论
- Near-Zone Field Strength of Aperture Antenna 口径面天线辐射近区场强计算
- Method of fast estimating aperture antenna directivity and gain 口径天线方向性系数和增益的快速估算方法
- Research on the Radiation Pulse Width of the Aperture Antenna 口径天线辐射脉冲持续时间的研究
- Radiation Performances of a Incline Rectangular Aperture Antenna 矩形斜口面天线辐射性能
- She cast her eyes down to avoid direct eye contact. 她垂下双目以避免对视。
- I'll book you on a direct flight to London. 我将为你预订直飞伦敦的航班。
- He has chosen the most direct route. 他选取了最直的路线。
- She's very direct, believes in speaking her mind. 她为人直率，喜欢有什么说什么。
- Can you direct me to the shoe department? 请告诉我卖鞋部在哪里。
- Be there a direct train for Beijing to Nanning? 从北京到南宁有直达车吗？
- See that direct heat does not play on it. 当心别让它直接受热。
- It's a long way by road the train is more direct. 走公路很远--乘火车近。
