Furthermore , in order to meet the requirement of high performance and low cost , rf transceiver needs a fully monolithic integration 同时,为了满足高可靠性和低成本的要求,电路需要高集成度,因此射频收发机需要能够单片集成。
A transceiver , which was suspected to have stolen from a tractor parked at the roadside of ma sik road , was found inside the man s rucksack 警员在他的背囊内搜出一部无线电收发机，怀疑是从一辆停泊在马适路的拖拉机上偷去的。
Fibre optic active components and devices - performance standards - part 4 : 1 300 nm fibre optic transceivers for gigabit ethernet application 纤维光学有源元器件及装置.性能标准.第4部分:千兆比特以太网用1300nm纤维光学无线电收发机
The inventive antenna has a very even radiation field on the horizontal plane and is thus ideal for the radio transceiver used in mobile communications 本发明的天线结构具有宽频与辐射效率高的优点，适合应用于行动通讯之无线收发机。
Alarm systems - part 7 - 7 : message formats and protocols for serial data interfaces in alarm transmission systems ; alarm system interfaces for plug - in alarm system transceivers 警报系统.第7 - 7部分:警报传输系统串行数据接口的信息格式和协议.插入式无线电收发机用警报系统接口
On th - f6 transceiver , the “ service menu ” is accessible only by opening the transceiver . the “ service menu ” contacts are shown in the following picture , close to the “ 1 ” and “ 4 ” keys 在th - f6无线电收发机上， "服务菜单"只有藉由打开无线电收发机是可接近的。 "服务菜单"连络在接着的照片中被显示,对" 1 "和" 4 " 。
Authorised hikers through the park will be given transponders that tell the detectors who they are , as with the “ identification friend - or - foe ” systems on military aircraft 批准可进入林区的徒步旅行者将被佩戴上异频雷达收发机，这样探测器就能识别出他们的身份，这是通过军用飞机上的“敌友身份识别”系统来完成的。
In the design of the rf front - end , the effect of the low voltage power supply must be considered since the low voltage power supply limits the voltage swing of the circuit nodes and may affect the dc operation point , power gain and linearity of the rf front - end 本论文实现的收发机射频前端采用了1 . 8v的电源电压，射频前端各模块的设计都考虑到了低电源电压对直流工作点、增益和线性度的影响。
With the rapid advancement of process and technology , especially the realization of on - chip passive elements such as inductors and varactors , the on - chip implementation of voltage - controlled oscillators ( vcos ) which are necessary in wireless transceivers has become easy 在工艺技术的飞速进步下,尤其是电感和变容管等无源器件片上实现问题的解决,压控振荡器已经可以实现单片集成,这对降低收发机的成本十分关键。
There must be a marine casualty happened every 4 days before 1984 , the amount of marine casualty happened at this area corresponds to 1 / 7 amount of the whole changjiang " marine casualty , so mariners gave it a name as " mouth of tiger " . due to the specific geographical condition and the extremely representative vessel traffic management of changjiang yingongzhou channel section , many intelligent people began researching and practicing the vessel traffic management of this changjiang " s down - stream complicated channel section from 1980s , at dec 15th 1984 the authority at that time - changjiang yingongzhou channel section previously ; up to the last years of 1980s ministry management administration applied traffic control on changjiang yingongzhou channel section previously , up to the last years of 1980s ministry of communications assigned shanghai marine college , shanghai ship & shipping research institute and changjiang harbor superintendence administration to make feasibility demonstrate about modern vts of zhenjiang traffic control section ; in 1990 dasha radar station which is the first radar vts station with inner river was finished , groped a new way for applying modern radar traffic control of vessel traffic management ; in 1997 the vtms of changjiang " s down - stream from nanjing to liuhekou was completed with connecting net and came into operation formally , meanwhile the signals of dasha radar station were conveyed to vts center by light cable , and then united applying vessel traffic management upon the whole authorized area ; in jun 2001 jiangsu msa made changjiang yingongzhou channel section as the first experimental group of creating " civilized , safe , passable channel activity , updating dasha radar antenna and receive - transmitter building closed - circuit television monitor system , setting uo safety warning board , starting navigational route reformation , carrying out united construction 1984以前这里平均每四天就发生一起海损事故，事故数占整个长江的1 7 ，被行船人称为“老虎口” 。长江尹公洲航段缘其极为特殊的地理区位条件和极具代表性的船舶交通管理，从上个世纪八十年代初就有识之士开始了这个长江下游最复杂航段的船舶交通管理探索和实践。 1984年11月15日当时的长江航政管理局在长江尹公洲水域率先施行交通管制；到八十年代末交通部委托上海海运学院、上海船舶研究所和长江港监局联合开展镇江交通管制段建立现代化交管系统的可行性论证； 1990年大沙雷达站? ?内河第一座雷达交管站建成，摸索实施现代化雷达交管的船舶交通管理新途径； 1997年长江下游南京至浏河口船舶交通管理系统建成联网投入正式运行，同时将大沙交管雷达信号通过光缆传输至交管中心，统一实施全辖区船舶交通管理； 2001年6月江苏海事局将长江尹公洲航段作为第一批创建“文明平安畅通航段”活动试点航段，更新大沙雷达天线和收发机，着手闭路工业电视监控系统建设，设立安全警示牌，启动航路改革，开展联合“共建” 。
