Main products include pdh series digital microwave communication equipments , digital tv codec , digital mmds / muds transmitting and relaying equipments , high performance antenna , etc 主要产品有： pdh系列数字微波通信设备，数字电视编解码器、数字mmds / muds发射和中继设备、高性能微波天线等。
High power linear amplifier is the key component of satellite communications , wireless communications , high capacity numeral microwave communications , catv , wlan and other communication systems 高功率线性功放是军用卫星导航通信、无线通信、大容量数字微波通信、广播电视、无线接入等系统急需的关键部件。
First of all , a brief introduction of techniques and applications of digital microwave communication system is presented in the paper . there is also a synopsis of the composition and key parameters of the system 论文在分析数字微波通信技术和目前的数字微波通信系统的组成及关键技术参数的基础上，提出了在数字微波通信系统建设中需要注意的问题。
In future information society , space optical communication will replace radio frequency ( rf ) & microwave communication as dominant position in field of wireless communication because of it ' s unparalleled advantage 在未来的信息社会中，空间光通信技术因其无可比拟的优势，将取代目前无线电( radiofrequency - rf )和微波通信在无线通信领域中的主导地位。
Microwave dielectric materials have been widely used in information and communication domain , which are used in the systems of microwave communication , satellite communication , electronic countermeasure , remote sensing and so on 当今信息技术高速发展,微波介质材料已经广泛地应用于电子、通信等各个领域中。如微波通信、卫星通信、电子对抗、遥感等系统已大量使用微波介质材料。
Its main function is to amplify and transmit the upconvertor ' s signal . it is applied to various kinds of ground equipment and satellite transponder . there was captured by foreign brand basically in the market of mobile communications in our country 众所周知，功率放大器模块是微波通信发射机的重要组成部分，它完成对上行链路信号的放大发射功能，广泛的应用于各种地面设备和卫星转发器中。
Our company focus on providing service for the fields of mlcrowave communication . automatization control , textile machinery , instruments equlpments and automobile . our major customers : allrizon - tongguang , benninger , rae 公司专注于微波通信、工业自动化控制、纺织机械、汽车等高科技行业的精密部件加工.公司现已成为奥雷通光通讯设备" 、 "贝宁格纺织机械" 、 "华瑞科学仪器"等国内及国际知名厂商的主要供应商
Main purpuses of the artical are to discuss the theory of microwave multistage frequency conversion , to specify the technical parameter of a microwave assembly ( a multistage frequency convertor ) , to establish some corresponding measurement system and to analysis the measurment result with the knowledge of uncertainty 为了满足数字微波通信在移动通信、有线电视、宇航和国防领域的发展需要,各种数字微波通信综合测试系统的研发更成为近年来的技术热点。
Compared with microwave communication , space optical communication has much superiority : much greater communication capability , narrow beam , good direction , much greater power density functions , lesser antenna size and whole mass , and high capability of anti - electromagnetism and secrecy 与微波通信相比，空间光通信具有很多优点：通信容量可以显著增大；发射光束窄，方向性好，功率密度显著增加；天线尺寸小，系统质量相对小；抗电磁干扰，保密性强等等。
Mixers are the key components of many microwave and millimeter - wave systems . the super - heterodyne receiver is always applied in modern communication system , mixer becomes the key component as is at the first part of system . but it is more and more difficult to get the choiceness lo source of the same band with the system is working at high frequency especially in the millimeter - wave . sub - harmonic mixer is a good solution to this problem now . in this circuit we need just half 、 quarter 、 even 1 / 8 of the rf signal frequency . in this paper the design and fabricate of sub - harmonic hmic mixers ( 2 , 4 ) at w - band are introduced 混频器是微波通信、射电天文学、雷达、等离子物理、遥控、遥感、电子对抗,以及许多微波测量系统中至关重要的部件。在现代通信系统中,毫米波频段通常采用超外差接收机,混频器作为第一级就成为关键部件。由于在毫米波频段,同频段高性能的本振源成本高,技术难度大,采用分谐波混频技术是解决此问题的有效途径,只需射频频率1 / 2 、 1 / 4甚至1 / 8的本振频率即可实现混频。
