Βι¶ΉΤΌΕΔ

Close menu

Research & Development

Abstract

With the growth of the Βι¶ΉΤΌΕΔ television and v.h.f. sound services some transmitting aerials must of necessity comply with increasingly complex requirements in respects of the shape of the horizontal radiation pattern. It is difficult, however, to make satisfactory measurements of this pattern on the final aerial. In order to ensure that specified requirements are met, it is therefore necessary to measure the radiation pattern of a small-scale model of the aerial, and then to check that the ratios of the currents flowing in different parts of the final aerial are the same as for the model. Two methods of carrying out such measurements are described and compared.

White Paper copyright

© Βι¶ΉΤΌΕΔ. All rights reserved. Except as provided below, no part of a White Paper may be reproduced in any material form (including photocopying or storing it in any medium by electronic means) without the prior written permission of Βι¶ΉΤΌΕΔ Research except in accordance with the provisions of the (UK) Copyright, Designs and Patents Act 1988.

The Βι¶ΉΤΌΕΔ grants permission to individuals and organisations to make copies of any White Paper as a complete document (including the copyright notice) for their own internal use. No copies may be published, distributed or made available to third parties whether by paper, electronic or other means without the Βι¶ΉΤΌΕΔ's prior written permission.