双频段滤波器也成为这些通信系统前端的重要器件。
This dissertation gives a detail study on the design technique and theory of dual-band filters for wireless communication systems.
设计一种新型串行馈电的双频段八臂缝隙螺旋天线。
A novel dual-band 8-arm spiral slot antenna with serial feed is designed.
最终得到一款满足无线通信中应用需求的双频段天线。
At last, the proposed antenna satisfies the working requirement of wireless communication system.
坏：思科代客加不支持双频段，它没有对存储或打印服务功能的USB端口。
The bad: The Cisco Valet Plus doesn't support dual-band and it has no USB port for storage or print-serving features.
首先，文中阐述了车载双频段、共口径、宽波束圆极化微带天线的设计要求。
Firstly, the requirements of the parameter for the dual-band, common-caliber, wide beam-width and circular polarization antennas are presented.
本文主要讨论双频段微波低噪声放大器的设计技术，介绍实现双频段的设计方法及工艺和制作方法。
The design and fabrication of dual-band microwave low noise amplifier are discussed in this paper. The design details and processing techniques are presented.
最后通过大量实验和研究，提出了一种新型EBG结构，在此基础上设计出宽阻带并具有双频段带隙特性的滤波电路。
A new EBG structure is proposed through a lot of experiments and analysis. A filter with a wide stop-band and another filter with two stop-bands are further designed.
经过外场测试，天线在S/X双频段具有高增益、低噪声温度的优良性能，天馈系统在S波段能进行精密跟踪及S/X双频高效率接收。
Antenna have high gain, low noise temperature characteristic under test in experimentation, and it can precision tracking at S-band, high efficiency receive at S/X-band.
双频路由器发送2.4GHz和5GHz两种频段信号，使之成为一个使用同样名称和密码的网络。
Dual-band routers transmit both the 2.4GHz and 5GHz bands as one network with the same name and password.
同轴馈源是用于反射面天线双频共用馈源的一种重要形式，其内导体为工作在高频段的圆波导馈源，同轴区域为工作在低频段的同轴馈源。
The coaxial feed is an important dual-band feed used in reflector antennas. The inner conductor of the coaxial feed is the high frequency feed, and the coaxial zone is the low frequency feed.
同轴馈源是用于反射面天线双频共用馈源的一种重要形式，其内导体为工作在高频段的圆波导馈源，同轴区域为工作在低频段的同轴馈源。
The coaxial feed is an important dual-band feed used in reflector antennas. The inner conductor of the coaxial feed is the high frequency feed, and the coaxial zone is the low frequency feed.
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