在3 kHz至300 GHz频率下测量射频场的准则检测

发布时间：2024-06-21 作者：中析研究所浏览：

GB/T 25072-2010缩微摄影技术.在35mm缩微胶片上拍摄存档报纸

本标准规定了为保存和发行而进行缩微拍摄报纸的一般原则。它包括对标板的要求，以确保正确的著录和保证缩微品符合存档的相关标准。本标准适用于35 mm无孔缩微卷片或缩微条片，包括第一代缩微胶片、中间片和发行拷贝。

GB/T 29306.1-2012绝缘材料在300 MHz以上频率下介电性能测定方法第1部分：总则

GB/T 29306的本部分规定了绝缘材料介电性能的试验方法。本部分适用于测定微波频率范围(即从约300 MHz一直到光频)中介质材料的相对电容率、介质损耗因数和与此有关的量,如损耗指数。

GB/T 29306.2-2012绝缘材料在300MHz以上频率下介电性能测定方法.第2部分：谐振法

GB/T 29306的本部分规定了以谐振法测定绝缘材料介电性能的试验方法。本部分适用于以谐振法测定微波频率范围(即从约300MHz一直到光频)中固体、液体或熔融状介质材料的相对电容率、介质损耗因数和与此有关的量,如损耗指数。

AS 1255.4-1974方法4-固体塑料绝缘材料的电特性测试方法方法4-在300 MHz以下的功率，音频和射频频率下的功率和电气散逸系数

This method describes procedures applying to solid plastics insulating materials for the determination of permittivity and dissipation factor and of quantities calculated from them, such as loss index, within the frequency range 15 Hz to 300 MHz. Some of the procedures described can, with special precautions, be used for measurements at frequencies considerably lower or higher than the given limits.The calculations and measurements given are based on sinusoidal waveform.Fusible materials, as well as solid materials, can be measured by the pro-cedures described. The measured values are dependent on physical conditions such as frequency, temperature and moisture content, and in special cases, on field strength as well.In some cases, tests at voltages exceeding 1000 V may introduce effects not related to permittivity and dielectric dissipation factor, and are not described herein.NOTES:1. Some considerations affecting choice of measuring methods are given in Appen-dix A.2. Measuring apparatus and their use are discussed in Appendix B.3. The significance of dielectric properties is discussed in Appendix C.4. Factors influencing dielectric measurements are considered in Appendix D.5. The accuracy to be expected from the test procedures and circuits is discussed in Appendix E.

IEC 60377-1-1973绝缘材料在300MHz以上频率下介电性能测定方法第1部分:总则

Applies to the procedures for the determination of relative permittivity and dielectric dissipation factor of dielectric materials in the microwave frequency region. This part of the standard gives general definitions, contains a discussion of the factors influencing dielectric properties of dielectric materials, a survey on measuring methods and requirements for test material shape and quantity.

IEC 60377-2-1977绝缘材料在300MHz以上频率下介电性能测定方法第2部分:谐振法

Details with reference to the general considerations in part 1 of this standard the measuring procedures of the dielectric properties of insulating materials at microwave frequencies by resonance methods. In an appendix following resonator types are described: Re-entrant cavity resonators (frequency range 100 MHz to 1000 MHz), coaxial resonators ( 1 GHz to 7 GHz), resonant cavities ( 1 GHz to 30 GHz), \"open\" cavity resonators (above about 3 GHz, for solid specimens of low dissipation factor only) and optical resonators (above about 30 GHz).

ISO/ASTM 51649-2015在300 keV 和25 MeV 能量之间辐射加工用电子束设备中剂量测定的实施规程

This practice outlines dosimetric procedures to be followed in\ninstallation qualification (IQ), operational qualification (OQ) and\nperformance qualifications (PQ), and routine processing at electron\nbeam facilities. \nThe electron beam energy range covered in this practice is\nbetween 300 keV and 25 MeV, although there are some discussions for\nother energies. \nDosimetry is only one component of a total quality assurance\nprogram for adherence to good manufacturing practices used in\nradiation processing applications. Other measures besides dosimetry\nmay be required for specific applications such as health care\nproduct sterilization and food preservation. \nSpecific standards exist for the radiation sterilization of\nhealth care products and the irradiation of food. For the radiation\nsterilization of health care products, see ISO 11137-1\n(Requirements) and ISO 11137-3 (Guidance on dosimetric aspects).\nFor irradiation of food, see ISO 14470. In those areas covered by\nthese stand

ITU-R P.1238-8-2015用于规划频率范围在300 MHz到100 GHz内的室内无线电通信系统和无线局域网的传播数据和预测方法

This Recommendation provides guidance on indoor propagation over the frequency range from 300 MHz to100 GHz. Information is given on:path loss models;delay spread models;effects of polarization and antenna radiation pattern;effects of transmitter and receiver siting;effects of building materials furnishing and furniture;effects of movement of objects in the room;statistical model in static usage.

ITU-R REPORT M.2109-2007在3400-4200和4500-4800 MHz频段的高级移动通信系统(IMT-Advanced)和卫星固定业务中的地球同步卫星网络之间的共享研究

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.

ITU-R RS.1628-2003地球探测卫星业务(有源)、太空研究业务(有源)和其他业务在35.5-36 GHZ频段间共享的可能性

The frequency band 35.5-36 GHz is allocated to the EESS (active), space research (active), radiolocation and meteorological aids services on a primary basis. Although the 35.5-36 GHz band is allocated for meteorological aids, there is no known use of the band by this service

ITU-R S.1594 FRENCH-2002在30 GHz范围内高密度卫星固定业务地球站向同步卫星固定业务空间站进行传输的技术特性

The ITU Radiocommunication Assembly considering that the earth stations of various different geostationary (GSO) satellite networks in the fixed-satellite service (FSS) are planning to commence operation in the 30 GHz frequency range in the near future.

ITU-R S.1594 SPANISH-2002在30 GHz范围内高密度卫星固定业务地球站向同步卫星固定业务空间站进行传输的技术特性

ITU-T H.243-2005使用1920Kbit/s以内的数字信道在3个或以上视听终端间用于建立通信的程序.研究组16

This Recommendation concerns the system operation for a conference call between three or moreaudiovisual terminals. It is applicable to a single MCU containing an audio mixer and a videoswitch according to the provisions of ITU-T Rec. H.231, to calls involving two such MCUs, and tocalls involving three or more MCUs in a star configuration. It is also applicable to MCUscontaining a video mixer. ITU-T Recs H.233 and H.234 address issues concerning the use of theEncryption Control Signal (ECS). ITU-T Rec. H.242 provides for communication between twoaudiovisual terminals connected point to point, using the frame structure defined in ITU-TRec. H.221. ITU-T Rec. H.230 defines a number of Control and Indication signals, including thoseused in the multipoint communication procedures described in this Recommendation.Three or more audiovisual terminals may be put into communication to form a conference call, bymeans of one or more Multipoint Control Units (MCU). The general principles of multipointcommunication are described in ITU-T Rec. H.231. The means by which digital channels areestablished between terminals and MCUs, and between MCUs, is outside the scope of thisRecommendation (see ITU-T Rec. H.200/AV.420).It should be noted that the physical realization of an MCU may be such that two or moreindependent conferences may be set up within the same unit; logically, however, there is norelationship between these conferences; the text herein refers to an MCU only as a logical entitypertinent to the particular call of concern.This Recommendation concerns only the flow of signals along the fixed digital paths, which may beat 64 kbit/s (56 kbit/s in certain networks) or multiples thereof up to 1920 kbit/s. The flow consistsof a multiplex of audio, video, control and indication signals, and optional user data as defined inITU-T Rec. H.221 which must be handled by the MCU in a way which is satisfactory to the users.The signal multiplex on each path is fully in accordance with ITU-T Rec. H.221: the BAScommands define explicitly how the demultiplexer at the end of each link shall operate. Likewise,the basic procedures for initialization and mode switching are fully in accordance with thosedefined in ITU-T Rec. H.242 for point-to-point working. However, the composition of themultiplexed signal transmitted by each terminal and by the MCU is determined by terminalprocedures and multipoint system procedures, as follows:a) Terminal procedures are defined in service-specific system Recommendations, such asITU-T Rec. H.320 for visual telephony.b) Multipoint system procedures are defined in this Recommendation and are not ofthemselves service-specific.c) ITU-T Rec. T.120: by making use of the T series, MCU and terminal procedures may begreatly enhanced, offering far more sophisticated specific applications to the user. Suchenhancement is outside the scope of this Recommendation, although interactions withspecific T.120 methods are described here.For definitions of terms used in this Recommendation, see ITU-T Rec. H.231; for definitions ofSBE and MBE symbols, see ITU-T Rec. H.230.

ASTM ISO/ASTM51649-2002在300keV和25MeV之间的能量下用于辐射加工的电子束设备中的剂量测量的标准实践

1.1 This practice covers dosimetric procedures to be followed in facility characterization, process qualification, and routine processing using electron beam radiation to ensure that the entire product has been treated with an acceptable range of absorbed doses. Other procedures related to facility characterization (including equipment documentation), process qualification, and routine product processing that may influence and may be used to monitor absorbed dose in the product are also discussed. Note 18212;For guidance in the selection and calibration of dosimeters, see ISO/ASTM Guide 51261. For further guidance in the selection, calibration, and use of specific dosimeters, and interpretation of absorbed dose in the product from dosimetry, also see ASTM Practice E 668 and ISO/ASTM Practices 51275, 51276, 51431, 51607, 51631, and 51650. For use with electron energies above 5 MeV, see ASTM Practice E 1026, and ISO/ASTM Practices 51205, 51401, 51538, and 51540 for discussions of specific large volume dosimeters. For discussion of radiation dosimetry for pulsed radiation, see ICRU Report 34. When considering a dosimeter type, be cautious of influences from dose rates and accelerator pulse rates and widths (if applicable).1.2 The electron energy range covered in this practice is between 300 keV and 25 MeV, although there are some discussions for other energies. 1.3 Dosimetry is only one component of a total quality assurance program for an irradiation facility. Other controls besides dosimetry may be required for specific applications such as medical device sterilization and food preservation.1.4 For the irradiation of food and the radiation sterilization of health care products, other specific ISO standards exist. For food irradiation, see ISO/ASTM Practice 51431. For the radiation sterilization of health care products, see ISO 11137. In those areas covered by ISO 11137, that standard takes precedence.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.