Measurement of the conductivity for metal thin films at microwave and millimeter-wave frequencies - Balanced-type circular disk resonator method

IEC 63616:2025 relates to a conductivity measurement method of thin metal films at microwave and millimeter-wave frequencies. This method has been developed to evaluate the conductivity of a metal foil used for adhering to a substrate or the interfacial conductivity of a metal layer formed on a dielectric substrate. It uses higher-order modes of a balanced-type circular disk resonator and provides broadband conductivity measurements by using a single resonator.

Messung der Leitfähigkeit von Metalldünnschichten bei Mikrowellen- und Millimeterwellenfrequenzen nach dem symmetrischen Kreisscheibenresonatorverfahren

Mesurage de la conductivité des films minces métalliques aux hyperfréquences et aux fréquences à ondes millimétriques - Méthode du résonateur à disque circulaire de type symétrique

L'IEC 63616:2025 traite d’une méthode de mesurage de la conductivité de films métalliques minces aux hyperfréquences et aux fréquences à ondes millimétriques. Cette méthode a été élaborée pour évaluer la conductivité d’une feuille métallique utilisée pour adhérer à un substrat ou la conductivité interfaciale d’une couche métallique formée sur un substrat diélectrique. Elle utilise des modes d’ordre supérieur d’un résonateur à disque circulaire de type symétrique et permet d’effectuer, à l’aide d’un seul résonateur, des mesurages de conductivité à large bande.

Merjenje prevodnosti kovinskih tankih plasti pri mikrovalovnih in milimetrskih frekvencah - Metoda uravnoteženega krožnega diska z resonatorjem (IEC 63616:2025)

General Information

Status
Published
Publication Date
15-Jan-2026
Current Stage
6060 - Document made available - Publishing
Start Date
16-Jan-2026
Due Date
31-Aug-2024
Completion Date
16-Jan-2026

Overview

EN IEC 63616:2026 (CLC adoption of IEC 63616) defines a standardized, non‑destructive method for measuring the electrical conductivity of metal thin films at microwave and millimeter‑wave frequencies using a balanced‑type circular disk resonator (BCDR). The method targets both free metal foils (used for bonding to substrates) and interfacial conductivity of metal layers formed on dielectric substrates. It enables broadband conductivity measurements with a single resonator by exploiting higher‑order TM0m modes.

Key topics and technical requirements

  • Measurement principle: Relative resonator method - compare unloaded Q‑factors of a reference BCDR and the BCDR containing the test sample to extract conductivity. Conductivity is related to surface resistance and resonant Q.
  • Resonator design: Balanced‑type circular disk resonator (thin circular conductor disk sandwiched between paired low‑loss dielectric sheets and parallel conductor plates). Selective excitation of TM modes via coaxial or waveguide interfaces.
  • Frequency coverage: Applicable in the microwave to millimeter‑wave band (document specifies 10 GHz ≤ f ≤ 170 GHz).
  • Sample configurations:
    • Conductor disk (metal foil) placed in the resonator
    • Pair of metal‑clad substrate samples for interfacial conductivity of deposited layers
  • Measurement system: Vector network analyzer (VNA) recommended for precision S21 measurements and complex‑plane circle fitting to obtain resonant frequencies and unloaded Q.
  • Calibration and reference: Requires a reference metal foil with known conductivity (reference foil can be characterized using dielectric resonator methods such as IEC 61788‑7).
  • Limitations and checks: Cutoff frequencies (coaxial lines, excitation holes, radial radiation through dielectric sheets) set the upper usable frequency. Periodic resonator checkups and VNA calibration are required.

Applications and users

  • Who uses it: RF/microwave materials labs, metrology institutes, thin‑film and foil manufacturers, connector and RF passive component designers, quality control and R&D teams in electronics and semiconductor industries, and academic researchers in microwave materials characterization.
  • Practical uses:
    • Non‑destructive QC of metal foils for bonding and shielding
    • Characterization of conductive coatings and metallization on dielectric substrates at operating RF/MMW frequencies
    • Broadband conductivity profiling using a single test fixture (useful for process control and material comparison)

Related standards

  • Normative reference: IEC 61788‑7:2020 (dielectric resonator methods for surface resistance measurements) - used for reference foil characterization.
  • Historical note: document replaces/renumbers prior work in the TC/SC (previously referenced documents such as 61169‑73 in committee discussions).

Keywords: EN IEC 63616:2026, conductivity measurement, metal thin films, microwave, millimeter‑wave, balanced‑type circular disk resonator, BCDR, interfacial conductivity, vector network analyzer, non‑destructive testing, broadband conductivity measurements.

Standard

EN IEC 63616:2026 - BARVE

English language
16 pages
Preview
Preview
e-Library read for
1 day

Get Certified

Connect with accredited certification bodies for this standard

UL Solutions

Global safety science company with testing, inspection and certification.

ANAB United States Verified

CEPREI Certification Center (Guangzhou Saibao)

Pioneer of third-party certification, subsidiary of Electronic Fifth Research Institute.

CNAS China Verified

CESI Beijing Certification (Saisi)

Subsidiary of China Electronics Standardization Institute (CESI), established 1963.

CNAS China Verified

Sponsored listings

Frequently Asked Questions

EN IEC 63616:2026 is a standard published by CLC. Its full title is "Measurement of the conductivity for metal thin films at microwave and millimeter-wave frequencies - Balanced-type circular disk resonator method". This standard covers: IEC 63616:2025 relates to a conductivity measurement method of thin metal films at microwave and millimeter-wave frequencies. This method has been developed to evaluate the conductivity of a metal foil used for adhering to a substrate or the interfacial conductivity of a metal layer formed on a dielectric substrate. It uses higher-order modes of a balanced-type circular disk resonator and provides broadband conductivity measurements by using a single resonator.

IEC 63616:2025 relates to a conductivity measurement method of thin metal films at microwave and millimeter-wave frequencies. This method has been developed to evaluate the conductivity of a metal foil used for adhering to a substrate or the interfacial conductivity of a metal layer formed on a dielectric substrate. It uses higher-order modes of a balanced-type circular disk resonator and provides broadband conductivity measurements by using a single resonator.

EN IEC 63616:2026 is classified under the following ICS (International Classification for Standards) categories: 17.220.20 - Measurement of electrical and magnetic quantities; 29.050 - Superconductivity and conducting materials. The ICS classification helps identify the subject area and facilitates finding related standards.

EN IEC 63616:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.

Standards Content (Sample)


SLOVENSKI STANDARD
01-marec-2026
Merjenje prevodnosti kovinskih tankih plasti pri mikrovalovnih in milimetrskih
frekvencah - Metoda uravnoteženega krožnega diska z resonatorjem (IEC
63616:2025)
Measurement of the conductivity for metal thin films at microwave and millimeter-wave
frequencies - Balanced-type circular disk resonator method (IEC 63616:2025)
Messung der Leitfähigkeit von Metalldünnschichten bei Mikrowellen- und
Millimeterwellenfrequenzen nach dem symmetrischen Kreisscheibenresonatorverfahren
(IEC 63616:2025)
Mesurage de la conductivité des films minces métalliques aux hyperfréquences et aux
fréquences à ondes millimétriques - Méthode du résonateur à disque circulaire de type
symétrique (IEC 63616:2025)
Ta slovenski standard je istoveten z: EN IEC 63616:2026
ICS:
17.220.20 Merjenje električnih in Measurement of electrical
magnetnih veličin and magnetic quantities
29.050 Superprevodnost in prevodni Superconductivity and
materiali conducting materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD EN IEC 63616

NORME EUROPÉENNE
EUROPÄISCHE NORM January 2026
ICS 17.220.20; 29.050
English Version
Measurement of the conductivity for metal thin films at
microwave and millimeter-wave frequencies - Balanced-type
circular disk resonator method
(IEC 63616:2025)
Mesurage de la conductivité des films minces métalliques Messung der Leitfähigkeit von Metalldünnschichten bei
aux hyperfréquences et aux fréquences à ondes Mikrowellen- und Millimeterwellenfrequenzen nach dem
millimétriques - Méthode du résonateur à disque circulaire symmetrischen Kreisscheibenresonatorverfahren
de type symétrique (IEC 63616:2025)
(IEC 63616:2025)
This European Standard was approved by CENELEC on 2026-01-02. CENELEC members are bound to comply with the CEN/CENELEC
Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC
Management Centre or to any CENELEC member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by translation
under the responsibility of a CENELEC member into its own language and notified to the CEN-CENELEC Management Centre has the
same status as the official versions.
CENELEC members are the national electrotechnical committees of Austria, Belgium, Bulgaria, Croatia, Cyprus, the Czech Republic,
Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the
Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Türkiye and the United Kingdom.

European Committee for Electrotechnical Standardization
Comité Européen de Normalisation Electrotechnique
Europäisches Komitee für Elektrotechnische Normung
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CENELEC All rights of exploitation in any form and by any means reserved worldwide for CENELEC Members.
Ref. No. EN IEC 63616:2026 E
European foreword
The text of document 46F/722/FDIS, future edition 1 of IEC 63616, prepared by SC 46F "RF and
microwave passive components" of IEC/TC 46 "Cables, wires, waveguides, RF connectors, RF and
microwave passive components and accessories" was submitted to the IEC-CENELEC parallel vote
and approved by CENELEC as EN IEC 63616:2026.
The following dates are fixed:
• latest date by which the document has to be implemented at national (dop) 2027-01-31
level by publication of an identical national standard or by endorsement
• latest date by which the national standards conflicting with the (dow) 2029-01-31
document have to be withdrawn
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CENELEC shall not be held responsible for identifying any or all such patent rights.
Any feedback and questions on this document should be directed to the users’ national committee. A
complete listing of these bodies can be found on the CENELEC website.
Endorsement notice
The text of the International Standard IEC 63616:2025 was approved by CENELEC as a European
Standard without any modification.
In the official version, for Bibliography, the following note has to be added for the standard indicated:
IEC 61788-7:2020 NOTE Approved as EN IEC 61788-7:2020 (not modified)

IEC 63616 ®
Edition 1.0 2025-11
INTERNATIONAL
STANDARD
Measurement of the conductivity for metal thin films at microwave and
millimeter-wave frequencies - Balanced-type circular disk resonator method

ICS 17.220.20; 29.050 ISBN 978-2-8327-0894-1

IEC 63616:2025-11(en)
IEC 63616:2025 © IEC 2025
CONTENTS
FOREWORD . 2
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Measurement parameters . 4
5 Theory and calculation equations . 5
6 Measurement system . 8
7 Measurement procedure . 9
7.1 Preparation of measurement apparatus . 9
7.2 Adjustment of measurement conditions . 9
7.3 Calibration of a vector network analyzer . 9
7.4 Measurement of the BCDR . 9
7.5 Determination of conductivity . 9
7.6 Periodic checkup of resonator . 10
Annex A (informative) Example of conductivity measurement results. 11
Bibliography . 13

Figure 1 – Structure of a BCDR. 5
Figure 2 – Configurations of the BCDR for conductivity measurements of metal foils . 6
Figure 3 – Configurations of the BCDR for interfacial conductivity measurements of
metal layers on substrates . 7
Figure 4 – Schematic diagram of a vector network analyzer measurement system . 8
Figure A.1 – Measured transmissions of the BCDRs with the two configurations . 11

Table A.1 – Parameters of the copper-clad substrate sample . 11
Table A.2 – Measurement results of interfacial conductivity . 12

IEC 63616:2025 © IEC 2025
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
Measurement of the conductivity for metal thin films
at microwave and millimeter-wave frequencies -
Balanced-type circular disk resonator method

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
all national electrotechnical committees (IEC National Committees). The object of IEC is to promote international
co-operation on all questions concerning standardization in the electrical and electronic fields. To this end and
in addition to other activities, IEC publishes International Standards, Technical Specifications, Technical Reports,
Publicly Available Specifications (PAS) and Guides (hereafter referred to as “IEC Publication(s)”). Their
preparation is entrusted to technical committees; any IEC National Committee interested in the subject dealt with
may participate in this preparatory work. International, governmental and non-governmental organizations liaising
with the IEC also participate in this preparation. IEC collaborates closely with the International Organization for
Standardization (ISO) in accordance with conditions determined by agreement between the two organizations.
2) The formal decisions or agreements of IEC on technical matters express, as nearly as possible, an international
consensus of opinion on the relevant subjects since each technical committee has representation from all
interested IEC National Committees.
3) IEC Publications have the form of recommendations for international use and are accepted by IEC National
Committees in that sense. While all reasonable efforts are made to ensure that the technical content of IEC
Publications is accurate, IEC cannot be held responsible for the way in which they are used or for any
misinterpretation by any end user.
4) In order to promote international uniformity, IEC National Committees undertake to apply IEC Publications
transparently to the maximum extent possible in their national and regional publications. Any divergence between
any IEC Publication and the corresponding national or regional publication shall be clearly indicated in the latter.
5) IEC itself does not provide any attestation of conformity. Independent certification bodies provide conformity
assessment services and, in some areas, access to IEC marks of conformity. IEC is not responsible for any
services carried out by independent certification bodies.
6) All users should ensure that they have the latest edition of this publication.
7) No liability shall attach to IEC or its directors, employees, servants or agents including individual experts and
members of its technical committees and IEC National Committees for any personal injury, property damage or
other damage of any nature whatsoever, whether direct or indirect, or for costs (including legal fees) and
expenses arising out of the publication, use of, or reliance upon, this IEC Publication or any other IEC
Publications.
8) Attention is drawn to the Normative references cited in this publication. Use of the referenced publications is
indispensable for the correct application of this publication.
9) IEC draws attention to the possibility that the implementation of this document may involve the use of (a)
patent(s). IEC takes no position concerning the evidence, validity or applicability of any claimed patent rights in
respect thereof. As of the date of publication of this document, IEC had not received notice of (a) patent(s), which
may be required to implement this document. However, implementers are cautioned that this may not represent
the latest information, which may be obtained from the patent database available at https://patents.iec.ch. IEC
shall not be held responsible for identifying any or all such patent rights.
IEC 63616 has been prepared by subcommittee 46F: RF and microwave passive components,
of IEC technical committee 46: Cables, wires, waveguides, RF connectors, RF and microwave
passive components and accessories. It is an International Standard.
The text of this International Standard is based on the following documents:
Draft Report on voting
46F/722/FDIS 46F/734/RVD
Full information on the voting for its approval can be found in the report on voting indicated in
the above table.
The language used for the development of this International Standard is English.
IEC 63616:2025 © IEC 2025
This document was drafted in accordance with ISO/IEC Directives, Part 2, and developed in
accordance with ISO/IEC Directives, Part 1 and ISO/IEC Directives, IEC Supplement, available
at www.iec.ch/members_experts/refdocs. The main document types developed by IEC are
described in greater detail at www.iec.ch/publications.
The committee has decided that the contents of this document will remain unchanged until the
stability date indicated on the IEC website under webstore.iec.ch in the data related to the
specific document. At this date, the document will be
– reconfirmed,
– withdrawn, or
– revised.
IEC 63616:2025 © IEC 2025
1 Scope
This document relates to a conductivity measurement method of thin metal films at microwave
and millimeter-wave frequencies. This method has been developed to evaluate the conductivity
of a metal foil used for adhering to a substrate or the interfacial conductivity of a metal layer
formed on a dielectric substrate. It uses higher-order modes of a balanced-type circular disk
resonator and provides broadband conductivity measurements by using a single resonator.
In comparison with the conventional method d
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.

Loading comments...