IEC PAS 62437:2005

Radio disturbance characteristics for the protection of receivers used on board vehicles, boats, and on devices - Limits and methods of measurement - Specifications for active antennas

Active antennas used on board vehicles are electronic components in the sense of CISPR 25. Therefore, the requirements regarding emissions apply to it in its function as EUT. In addition to this, vehicle active antennas are used as part of the measurement chain for the evaluation of emissions produced by any other component in the vehicle. With a passive antenna no special considerations were necessary because it can neither generate emissions nor harmonics due to its linearity. This Publicly Available Specification (PAS) gives additional information for the use of active antennas for radiated emission measurement according to CISPR 25. Test set-ups at component level are defined for the determination of noise floor.

General Information

• Status: Withdrawn
• Publication Date: 04-Sep-2005
• Withdrawal Date: 30-Dec-2018
• ICS: 33.100.10 - Emission
• ICS: 33.100.20 - Immunity
• Technical Committee: CIS/D - Electromagnetic disturbances related to electric/electronic equipment on vehicles and internal combustion engine powered devices
• Current Stage: WPUB - Publication withdrawn
• Start Date: 31-Dec-2018
• Completion Date: 02-Jan-2019

Standards Content (Sample)

PUBLICLY
IEC
AVAILABLE
PAS 62437
SPECIFICATION
First edition
2005-09
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Radio disturbance characteristics for the
protection of receivers used on board vehicles,
boats, and on devices –
Limits and methods of measurement –
Specifications for active antennas

Reference number
IEC/PAS 62437:2005(E)
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PUBLICLY
IEC
AVAILABLE
PAS 62437
SPECIFICATION
First edition
2005-09
INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE
Radio disturbance characteristics for the
protection of receivers used on board vehicles,
boats, and on devices –
Limits and methods of measurement –
Specifications for active antennas

 IEC 2005  Copyright - all rights reserved
No part of this publication may be reproduced or utilized in any form or by any means, electronic or
mechanical, including photocopying and microfilm, without permission in writing from the publisher.
International Electrotechnical Commission, 3, rue de Varembé, PO Box 131, CH-1211 Geneva 20, Switzerland
Telephone: [phone] Telefax: [phone] E-mail: [e-mail] Web: www.iec.ch
PRICE CODE
Commission Electrotechnique Internationale
M
International Electrotechnical Commission
Международная Электротехническая Комиссия
For price, see current catalogue

– 2 – PAS 62437 © IEC:2005 (E)

CONTENTS
FOREWORD.3

INTRODUCTION.5

1 Scope .6

2 Normative references .6

3 Terms and definitions .6
4 Set-up for noise-floor measurement .7

Annex A (informative) Examples for artificial antenna networks.10

Figure 1 – Example test set-up for noise-floor measurements (Category I antennas) .8
Figure 2 – Example test set-up for noise-floor measurements (Category II antennas) .8
Figure A.1 – Block circuit of an artificial antenna network for antennas intended for
rear-screen installation .10
Figure A.2 – Block circuit of an artificial antenna network for antennas intended for
side-screen installation .11

PAS 62437 © IEC:2005 (E) – 3 –

INTERNATIONAL ELECTROTECHNICAL COMMISSION

INTERNATIONAL SPECIAL COMMITTEE ON RADIO INTERFERENCE

____________
RADIO DISTURBANCE CHARACTERISTICS FOR THE PROTECTION

OF RECEIVERS USED ON BOARD VEHICLES, BOATS, AND ON DEVICES –

LIMITS AND METHODS OF MEASUREMENT –

SPECIFICATIONS FOR ACTIVE ANTENNAS

FOREWORD
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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
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A PAS is a technical specification not fulfilling the requirements for a standard but made
available to the public.
IEC-PAS 62437 has been processed by CISPR subcommittee D: Electromagnetic
disturbances related to electric/electronic equipment on vehicles and internal combustion
engine powered devices.
– 4 – PAS 62437 © IEC:2005 (E)

During the maintenance of CISPR 25, the need for additional information regarding the
use of active antennas for on-board reception was raised. Since it is necessary to gather

experience with the described methods, CISPR subcommittee D decided not to include it

as an annex in CISPR 25 for the time being, but to publish it as separate document.

The text of this PAS is based on the This PAS was approved for

following document: publication by the P-members of the
committee concerned as indicated in

the following document
Draft PAS Report on voting
CISPR/D/308/NP CISPR/D/315/RVN

Following publication of this PAS, the technical committee or subcommittee concerned will
investigate the possibility of transforming the PAS into an International Standard.
This PAS shall remain valid for an initial maximum period of 3 years starting from 2005-09.
The validity may be extended for a single 3-year period, following which it shall be revised to
become another type of normative document, or shall be withdrawn.

PAS 62437 © IEC:2005 (E) – 5 –

INTRODUCTION
Use of active antennas is today the state of the art in vehicles. In principle, active antennas

can be handled like any other component/module used in vehicles, but, since they become

part of the test equipment when performing radiated emission tests according to Clause 5 of

CISPR 25, it must be guaranteed that the emissions produced by the active antenna itself will

allow these emission measurements.

– 6 – PAS 62437 © IEC:2005 (E)

RADIO DISTURBANCE CHARACTERISTICS FOR THE PROTECTION

OF RECEIVERS USED ON BOARD VEHICLES, BOATS, AND ON DEVICES –

LIMITS AND METHODS OF MEASUREMENT –

SPECIFICATIONS FOR ACTIVE ANTENNAS

1 Scope
Act
...