IEC TR 63099-3:2022

IEC TR 63099-3 ®
Edition 1.0 2022-03
TECHNICAL
REPORT
colour
inside
Transmitting and receiving equipment for radiocommunication – Radio-over-
fibre technologies for electromagnetic-field measurement –
Part 3: Antenna near-field pattern measurement using optical techniques in
terahertz-wave bands
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IEC TR 63099-3 ®
Edition 1.0 2022-03
TECHNICAL
REPORT
colour
inside
Transmitting and receiving equipment for radiocommunication – Radio-over-

fibre technologies for electromagnetic-field measurement –

Part 3: Antenna near-field pattern measurement using optical techniques in

terahertz-wave bands
INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 33,060,20 ISBN 978-2-8322-1090-4

– 2 – IEC TR 63099-3:2022 © IEC 2022
CONTENTS
FOREWORD . 4
INTRODUCTION . 6
1 Scope . 7
2 Normative references . 7
3 Terms, definitions and abbreviated terms . 7
3.1 Terms and definitions . 7
3.2 Abbreviated terms . 8
4 Practical examples of antenna near-field measurement using optical techniques in
terahertz-wave bands . 8
4.1 Overview. 8
4.2 Non-polarimetric EO frequency down-conversion technique . 9
4.3 Synchronous system based on a self-heterodyne technique . 10
4.3.1 General . 10
4.3.2 Principle and system configuration . 10
4.3.3 Example of near-field measurement . 10
4.3.4 Near-to-far field transformation results . 11
4.4 Asynchronous system based on a phase-noise cancelling technique . 13
4.4.1 General . 13
4.4.2 Principle and system configuration . 13
4.4.3 Example of near-field measurement . 14
4.4.4 Near-to-far field transformation results . 14
4.5 Comparison between results obtained from synchronous and asynchronous
systems . 15
Bibliography . 17

Figure 1 – Proposed measurement system . 8
Figure 2 – Schematic diagram and photograph of EO probe. 9
Figure 3 – Principle of the non-polarimetric EO frequency down-conversion technique . 9
Figure 4 – Schematic diagram of the synchronous system based on the self-
heterodyne technique . 10
Figure 5 – Near-field of the terahertz wave (310 GHz) measured by the synchronous
system based on the self-heterodyne technique . 11
Figure 6 – Measured rectangular-type horn antenna and EO probe . 11
Figure 7 – Far-field pattern calculated from the near-field measured by the
synchronous system . 12
Figure 8 – Far-field pattern in the E-plane and H-plane . 12
Figure 9 – Schematic diagram of the asynchronous system based on the phase noise
cancelling technique . 14
Figure 10 – Near-field pattern measured using the asynchronous system . 14
Figure 11 – Far-field pattern calculated from the near-field measured by the
asynchronous system . 15
Figure 12 – Far-field pattern in the E-plane and H-plane . 15
Figure 13 – Far-field pattern calculated from the near-field measured by the
synchronous system (a) and asynchronous system (b) . 15
Figure 14 – Far-field pattern calculated from the near-field measured by the
asynchronous system . 16

Table 1 – Radiation pattern characteristics measured by the synchronous system . 13
Table 2 – Radiation pattern characteristics measured by the synchronous and
asynchronous systems . 16

– 4 – IEC TR 63099-3:2022 © IEC 2022
INTERNATIONAL ELECTROTECHNICAL COMMISSION
____________
TRANSMITTING AND RECEIVING EQUIPMENT FOR
RADIOCOMMUNICATION – RADIO-OVER-FIBRE TECHNOLOGIES
FOR ELECTROMAGNETIC-FIELD MEASUREMENT –

Part 3: Antenna near-field pattern measurement using
optical techniques in terahertz-wave bands

FOREWORD
1) The International Electrotechnical Commission (IEC) is a worldwide organization for standardization comprising
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rights. IEC shall not be held responsible for identifying any or all such patent rights.
IEC TR 63099-3 has been prepared by of IEC technical committee 103: Transmitting and
receiving equipment for radiocommunication. It is a Technical Report.
The text of this Technical Report is based on the following documents:
Draft Report on voting
103/207/DTR 103/224/RVDTR
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 Technical Report is English.

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.
A list of all parts in the IEC 63099 series, published under the general title Transmitting and
receiving equipment for radiocommunication – Radio-over-fibre technologies for
electromagnetic-field measurement, can be found on the IEC website.
Future documents in this series will carry the new general title as cited above. Titles of existing
documents in this series will be updated at the time of the next edition.
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,
• replaced by a revised edition, or
• amended.
IMPORTANT – The "colour inside" logo on the cover page of this document indicates that it
contains colours which are considered to be useful for the correct understanding of its
contents. Users should therefore print this document using a colour printer.

– 6 – IEC TR 63099-3:2022 © IEC 2022
INTRODUCTION
This document provides technical information on the antenna near-field pattern measurement
in terahertz-wave bands above 100 GHz, using optical techniques such as electro-optic (EO)
frequency down-conversion. Two techniques are covered: a synchronous system based on a
self-heterodyne technique, and an asynchronous system ba
...