Overview
IEC TS 61994-4-3:2008 is a Technical Specification published by the International Electrotechnical Commission (IEC). It focuses on the terminology and definitions for materials used in dielectric devices, specifically waveguide type dielectric resonators. This document forms part of the essential references for professionals and organizations working with frequency control and selection components. The technical specification supports international consistency and effective communication across standards, benefiting manufacturers, designers, and users in the electronics and telecommunications sectors.
Key Topics
- Dielectric Materials: The standard defines dielectric materials as those primarily exhibiting dielectric properties. These materials are critical in the creation of resonators for high-frequency applications.
- Dielectric Resonator Materials: Materials designed to function in ultra high frequency (UHF) and super high frequency (SHF) ranges. They require high relative permittivity, low loss factors, and minimal temperature coefficient of permittivity.
- Key Material Properties:
- Electric Constant (ε0): Defined as the permittivity of vacuum, a fundamental constant used in material evaluation.
- Relative Permittivity (εr): The ratio of a material’s absolute permittivity to the electric constant, critical for material selection.
- Loss Angle and Loss Factor: Quantitative measures of energy dissipation in dielectric materials.
- Quality Factor (Q0): Inversely proportional to loss, the quality factor expresses the material’s efficiency in frequency-dependent applications.
- Temperature Coefficient of Permittivity (TCε): Indicates how permittivity changes with temperature, important for maintaining device stability across varying environments.
- Coefficient of Linear Thermal Expansion (α): Describes dimensional stability of the material under temperature changes.
Applications
The standardized terminology and definitions serve a variety of practical applications, including:
- Design and Manufacturing: Assists manufacturers and designers in the selection and characterization of materials for dielectric resonators and supports precision in frequency control devices for telecommunications, broadcasting, and radar systems.
- Quality Assurance and Testing: Ensures consistent interpretation of material properties, facilitating reliable performance evaluation and quality control.
- Standard Development: Provides foundational terms for IEC Technical Committee 49 and other standards bodies developing documents for piezoelectric and dielectric devices.
- International Trade and Compliance: Supports global trade by establishing uniform definitions, reducing barriers caused by differing terminology in technical documentation.
Related Standards
- IEC 61338-1:2004 – Waveguide type dielectric resonators – Generic specification. This standard provides further definitions and specifications for dielectric resonators and is indispensable for professionals working with dielectric materials in frequency control devices.
- IEC TS 61994 Series – The broader series offers comprehensive glossaries and technical references for piezoelectric and dielectric devices, covering a wide range of materials and component types.
Practical Value
By adopting IEC TS 61994-4-3:2008, organizations and professionals ensure precise communication, improve compatibility of materials in global markets, and enhance the reliability of dielectric devices used for frequency control and selection. This standard supports the effective development, application, and maintenance of electronic components, contributing directly to advancements in wireless communications, sensors, and high-frequency systems.
For the most up-to-date information or related documents, consult the IEC website or relevant technical committee publications.