ICS 31.020 CCS L 90 Association Standard T/CSTM 01011 E—2023 Measurement of dielectric properties of materials in millimeter wave frequency range— Confocal type open resonator method 毫米波频段材料介电性能测试 开放式共聚 焦谐振腔法 (English Translation) Issued by Chinese Society for Testing & Materials ，Zhongguancun Issue d date:202 3-08-11 Implementation date ：2023-11-11 CSTMhQÆSÑ^Ou( 全国团体标准信息平台 I Foreword CSTM /FC 001 is in charge of this English translation. In case of any doubt about the contents of English translation, the Chinese original shall be considered authoritative. This document is drafted in accordance with the rules given in the GB/T 1.1 —2020 Directives f or standardization -Part 1: Rules for the structure and drafting of standardizing documents and GB/T 20001.10 — 2014 Rules for drafting standards ―Part 10: Product standards . Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights. This document was proposed by CSTM/FC 00, Foundational and Generic Technologies . This document was prepared by CSTM/FC 00, Foundational and Generic Technologies . 1 Chinese Society for Testing & Materials, Zhongguancun --abbreviated as CSTM. Field Committee --abbreviated as FC. CSTMhQÆSÑ^Ou( 全国团体标准信息平台 T/CSTM 01011E —2023 II Introduction The technology evolution of mobile communication s occurs every 10 years, 5G will become the most important mobile communication technology in the next generation. With the continuous development of 5G, millimeter wave technology will become the main development direction in the future. The application of millim eter wave technology brings new challenges and opportunities to the material s industry. Dielectric property is one of the most important properties indicators for material application in millimeter wave frequency range. Therefore, the measurement of dielec tric properties is particularly important for material manufacturers and downstream customers. Compared with other testing methods, confocal type open resonator method with the advantages of high efficiency, simple fixture fabrication, high testing accurac y, wide testing frequency band, is suitable for high frequency and low loss samples. In addition to dielectric substrate materials, it is also suitable for automatic and continuous testing of thin film materials. This document presents a method for measuri ng the dielectric properties of materials in millimeter wave frequency range by using a c onfocal type open resonator. It includes the detection of the real part of the relative permittivity and loss tangent , and also provides an automatic test method suita ble for various materials. CSTMhQÆSÑ^Ou( 全国团体标准信息平台 T/CSTM 01011E —2023 1 Measurement of dielectric properties of materials in millimeter wave frequency range —Confocal type open resonator method 1 Scope This document specifies the method of measuring the real part of the relative permittivity and loss tangent of solid dielectric, composite plate, engineering plastics and other materials in the frequency range of 20 GHz ~ 110 GHz by using a confocal type open resonator. The measurement range of the real part of the relative permittivity is from 2 to 30, and the measurement range of loss tangent is from 0.0001 to 0.05. This standard is suitable for the measurement of the real part of the relative permittivity and the loss tangent of silicon oxide, aluminum oxide , aluminum nitride, zirconia, boron nitride, silicon carbide, barium titanate and other inorganic materials, printed circuit boards and othe r organic -inorganic composite boards, polytetrafluoroethylene, polystyrene and other organic engineering plastics. It is