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短距离设备(1 GHz至40 GHz)检测项目报价? 解决方案? 检测周期? 样品要求? |
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GB/T 15629的本部分规定了低速无线个域网的物理层和媒体访问控制层的规范。这种低速无线接入适用于固定的、便携的、移动的设备,这些设备不用电池或仅用非常有限的电池电源,并主要工作在有限的个人空间(0m-10m)。本部分不具体规定密码算法,密码算法的具体信息与密码管理局联系。本部分中提及的密码算法仅作为示例。
GB/T 29261的本部分规定了自动识别和数据采集技术领域中无线电通信的专用术语和定义。本部分适用于无线电通信领域非用户与专家进行交流。
本标准规定了短距离设备及类似设备的电磁照射的符合性要求。本标准适用于短距离设备及类似应用的无线设备。频率范围为10Hz至30MHz。类似产品例如无线电源设备、近场通信设备、射频识别设备等可以参照本标准。
This part of IEC62369 presents procedures for the evaluation of human exposure toelectromagnetic fields (EMFs) from devices used in electronic article surveillance (EAS), radiofrequency identification (RFID) and similar applications. It adopts a staged approach tofacilitate compliance assessment. The first stage (Stage 1) is a simple measurement againstthe appropriate derived reference values. Stage 2 is a more complex series of measurementsor calculations, coupled with analysis techniques. Stage 3 requires detailed modelling andanalysis for comparison with the basic restrictions. When assessing any device, the mostappropriate method for the exposure situation may be used.At the time of writing this International Standard, electronic article surveillance, radiofrequency identification and similar systems do not normally operate at frequencies below1 Hz or above 10 GHz. EMF exposure guidelines and standards can cover a wider range offrequencies, so clarification on the required range is included as part of the evaluationprocedures.The devices covered by this document normally have non-uniform field patterns. Often thesedevices have a very rapid reduction of field strength with distance and operate under near-field conditions where the relationship between electric and magnetic fields is not constant.This, together with typical exposure conditions for different device types, is detailed inAnnex A.Annex B contains comprehensive information to assist with numerical modelling of theexposure situation. It includes both homogeneous and anatomical models as well as theelectrical properties of tissue.This International Standard does not include limits. Limits can be obtained from separatelypublished human exposure guidelines. Different guidelines and limit values may apply indifferent regions. Linked into the guidelines are usually methods for summation across widerfrequency ranges and for multiple exposure sources. These shall be used. A simplifiedmethod for summation of multiple sources is contained in Annex C. This has to be used withcare as it is simplistic and will overestimate the exposure; however it is useful as a guide,when the results of different evaluations are in different units of measure which are notcompatible.Different countries and regions have different guidelines for handling the uncertainties fromthe evaluation. Annex D provides information on the two most common methods.A bibliography at the end of this standard provides general information as well as useful Iinformation for the measurement of electromagnetic fields. See [1],[2],[3],[4],[5],[6]1).Similar national or international standards may be used as an alternative.
Recommendation ITU-R M.1453 – Transport information and control systems – Dedicated short range communications at 5.8 GHz, was approved at the Radiocommunication Assembly (RA) 2000. In August 2002, the RA approved a revision of the Recommendation as Recom
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.
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.
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