In this paper, the equations for calculation of the radiation performances on high efficiency double reflector antenna fed by beam waveguide are derived.

本文导出了地面站常用的改进型波束波导馈电高效率双镜天线的辐射特性的计算式。

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This paper introduces a double freedom degree motion control system of satellites antenna based on dual-redundancy hybrid stepping motor.

介绍了一种基于双余度混合式步进电动机的双自由度卫星天线运动控制系统。

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At last, the radiated field of axial-mode helical antenna and double ridged horn antenna is analyzed at this paper.

最后，本文对轴向模螺旋天线和双脊喇叭天线的辐射场进行了分析。

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WiCC cards double as NFC antennae, enabling them to seamlessly replace the existing NFC antenna with a card that delivers both NFC and wireless power.

ENGADGET: Duracell Powermat WiCC could bring wireless charging to any smartphone, we go hands-on (video)

The aforementioned internal antenna and Windows Mobile 6 Professional are welcome additions, of course, but you also get double the internal ROM (about 163MB usable), an extra 0.7 megapixels worth of snappin' power, the promise of EV-DO rev.

ENGADGET: Hands-on with the Sprint Mogul by HTC Mobile