Characterization of portable communication systems by means of near-field techniques

Jean Louis Lasserre; D. Serafin; Jean-Charles Bolomey; F. Lucas; F. Therond

doi:10.1117/12.220888

18 September 1995 Characterization of portable communication systems by means of near-field techniques

Jean Louis Lasserre, D. Serafin, Jean-Charles Bolomey, F. Lucas, F. Therond

Proceedings Volume 2556, Wireless Communications; (1995) https://doi.org/10.1117/12.220888
Event: SPIE's 1995 International Symposium on Optical Science, Engineering, and Instrumentation, 1995, San Diego, CA, United States

Abstract

For portable, civil or military, communication systems, the characterization of the radiated field poses specific problems. First of all, due to its poor directivity, the radiated field has to be determined over a full sphere surrounding the test antenna. Secondly, the user has an evident but rather random effect on the radiating properties, and the knowledge of such effects is required to perform reliable predictions of the radiated field. Finally, due to their small volume, the measurement process can be seriously perturbed by the cable(s) used to feed the portable system. This paper presents a Near- Field (NF) approach which offers a convenient solution for the two first aspects. The third one has been solved by using an optical link to feed the portable equipment under test. The performances of this optical link have been assessed by comparison to standard RF coaxial feeding and to numerical results predicted from a computer code. The NF approach has allowed to investigate the effects of the user on the Far-Field (FF) radiation pattern of his telephone, both in co- and cross- polarization. Preliminary assessments, conducted in the Socrate spherical NF facility of the Centre d'Etudes de Gramat (CEG), have demonstrated the flexibility and the accuracy of the NF approach.

Citation Download Citation

Jean Louis Lasserre, D. Serafin, Jean-Charles Bolomey, F. Lucas, and F. Therond "Characterization of portable communication systems by means of near-field techniques", Proc. SPIE 2556, Wireless Communications, (18 September 1995); https://doi.org/10.1117/12.220888

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available