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短距离超宽带设备检测项目报价? 解决方案? 检测周期? 样品要求? |
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本部分规定了无线通信设备及其关联的辅助设备的电磁兼容性(EMC)限值、性能判据和测量方法等。本部分适用于除广播接收机以外所有种类的无线通信设备。对于不适合在实验室环境下测试的特定产品(如大功率无线电发信机),可对设备进行现场测试。在这种情况下,如果没有适用的现场试验标准和方法,那么用于评估受试设备测量方法的基本原理和限值应与本部分的规定一致。
本部分规定了移动通信终端电源适配器的电磁兼容性(EMC)要求,包括限值、性能判据和测量方法等。本部分适用于移动通信终端使用的各种外置电源适配器。
本标准规定了超宽带技术收发信机、发信机、收信机的电磁兼容性(EMC)限值、性能判据和测量方法等。本标准适用于基于脉冲、改进型脉冲和射频载波的UWB通信技术的设备。本标准适用于UWB通信技术的固定(室内)、移动和便携应用:-独立无线设备,其控制装置可选;-插入式无线设备,与主机设备一起使用或者在主机设备内使用,例如个人电脑、手持终端等;-插入式无线设备,在组合设备内使用,例如线缆调制解调器、机顶盒、接入点等;-组合设备,或者插入式无线设备与某一特定主机设备的组合;-用于道路和轨道交通工具。
本标准规定了使用超宽带(UWB)技术的发射机、收发信机和接收机的技术要求和测试方法,包括等效全向辐射功率谱密度、带宽、杂散发射、电磁兼容性要求、标志、标签和说明书等。 本标准适用于超宽带(UWB)设备。
that the total interference to systems operating in the broadcasting service, from all sourcesof interference, as prescribed in the Recommendation mentioned in considering d) above, should atno time exceed one per cent of the total receiving system n
The Radio Regulations have established criteria with regard to the amount of interference allowed between the broadcasting service and other services with a frequency allocation. This Recommendation provides a guideline for an acceptable limit for total interference to the terrestrial broadcasting services that may result from the emissions of radio devices.
This Recommendation provides a vocabulary of terms and definitions for the land mobile service which mayalso be applicable to other radiocommunication services.
This Report contains propagation aspects, system design parameters, possible applications and other technical/operational characteristics, which are required for the implementation of fixed wireless systems in the frequency ranges 57 GHz to 130 GHz. The applications include specific examples of outdoor/indoor wireless connections taking advantage of these frequency bands (i.e. 60 GHz (57-64 GHz), 70 GHz (71-76 GHz), 80 GHz (81-86 GHz), 95 GHz (92-95 GHz) and 120 GHz (110-130 GHz)). The example systems in the 120 GHz case study, actually cover systems in the 110-130 GHz band. It is intended that future versions of this Report would be needed.
This Report provides information on many of the technology trends concerning radio access networks foreseen at the time of preparation of Recommendation ITU-R M.1645.
As the bands 3 400-4 200 MHz and 4 500-4 800 MHz are allocated worldwide on a primary basis to the FSS, this Report presents the results of the sharing studies performed between the FSS networks using the geostationary satellite orbit (GSO) and IMT-Advanced systems.
This Report considers interferences from devices using ultra-wideband (UWB) technology on radiocommunication services. As a main objective, it evaluates UWB e.i.r.p. density required for the protection of radiocommunication services.This Report also includes laboratory and field measurements on the impact of devices using UWB technology on radiocommunication services.
This Recommendation offers an additional methodology for the evaluation of the effect of interferencebetween radiocommunication networks operating in a shared frequency band.
Taking into account that limits for unwanted emissions in the spurious domain have not yet been defined for the free-space condition, there is a need for a new Recommendation.
Taking into account that there are two general measurement approaches (time domain and frequencydomain) this Recommendation gives the appropriate techniques to be applied when measuring UWBtransmissions.
This Recommendation is offering a summary of studies related to the impact of devices using UWB technology on radiocommunication services. These may be used as guidance for administrations when developing their national ultra-wideband (UWB) rules.
This Recommendation contains the description of an algorithm for the scalable coding of narrow-band and wideband speech and audio signals at 8-32 kbit/s.