2) low-noise ultrabroad-band
低噪声超宽频带
1.
This paper studies the CAD technique of low-noise ultrabroad-band PIN-FET combined circuits for optical fiber communication receivers.
研究了用于光接收机的低噪声超宽频带PIN-FET组合电路的CAD。
4) ultra-wideband
超宽频带
1.
The characteristics of the ultra-wideband partial discharge of both the stator bar of 300 MW turbo-generator out of service and the stator bar of 780 kW electromotor out of service are studied by using the developed ultra-wideband partial discharge detecting system.
利用开发的超宽频带局部放电测试系统 ,研究了退出运行的 30 0MW汽轮发电机定子线棒和 780kW电动机线棒的超宽频带局部放电特性 。
5) ultra-wide band
超宽频带
1.
Field detection of ultra-wide band partial discharge for generator stator insulation;
大电机定子绕组超宽频带局部放电现场检测
2.
The XLPE insulation samples are processed by an accelerated electrical ageing setup,and the characteristics of partial discharges(PD) during ageing are studied by the TE571 PD detector and the ultra-wide band PD measurement system.
利用TE571局放检测仪和超宽频带局放(PD)检测系统研究了XLPE电缆绝缘试样加速电老化过程中判断试样老化状态的局放统计参量和单次放电波形特性。
6) Ultra-broadband
超宽频带
1.
There is a designation of ultra-broadband microstrip antenna with concave patch.
设计了一种凹形贴片超宽频带微带天线,采用双层介质基板并且在两层介质基板之间加入了空气层,仿真结果表明,在中心工作频率为12GHz处,相对带宽达到了101。
补充资料：宽带和窄带业务
宽带业务是相对窄带业务而言的，一般来说，对于速率低于2Mb/s的通信业务统称窄带业务，如电话网、N-ISDN所提供的业务。对于高于2Mb/s的通信业务，如帧中继业务、视频点播、ATM业务、TV会议等称为宽带通信业务。 目前投入应用的宽带接入技术主要有两种：ADSL和FTTX＋LAN。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条