The path loss observed over a height scan yields insight into the nature of imperfections in the test environment used for the measurement of emissions

Author

Pratt, Ronald E.

Author_Institution

Hewlett-Packard Co., Cupertino, CA, USA

fYear

1997

fDate

18-22 Aug 1997

Firstpage

474

Lastpage

478

Abstract

The quality of a test site is determined by conformance of measured normalized site attenuation (NSA) to specifications cited in ANSI C63.4-1992. Celebration is appropriate if the data is within the +/-4 dB limits. More work is required if the site fails to meet the specification. Data which is ignored during the required search for the maximum signal needed to determine the NSA may prove useful in identifying the nature of the problem. The theoretical height scan response is described in this paper. Measured data obtained from an open area test site and three 10 meter absorber lined chambers are presented and analysis of the results leads to a new postulate for the operating principles of absorber lined chambers

Keywords

attenuation measurement; electric field measurement; electromagnetic interference; magnetic field measurement; measurement theory; test facilities; 10 m; ANSI C63.4-1992; absorber lined chambers; emissions measurement; height scan; measurement theory; normalized site attenuation; open area test site; operating principles; path loss observation; test environment imperfections; test site quality; theoretical height scan response; Antenna measurements; Area measurement; Dipole antennas; Equations; Loss measurement; Open area test sites; Polarization; Propagation losses; Receiving antennas; Testing;

fLanguage

English

Publisher

ieee

Conference_Titel

Electromagnetic Compatibility, 1997. IEEE 1997 International Symposium on

Conference_Location

Austin, TX

Print_ISBN

0-7803-4140-6

Type

conf

DOI

10.1109/ISEMC.1997.667726

Filename

667726