Dear experts,
I have a question about definition of antenna-to-EUT distance in
CISPR 22 and ANSI C63.4.
CISPR 22:2005 clause 10.3.1 ("Antenna-to-EUT distance") says that:
Measurement of the radiated field shall be made with the antenna
located at the horizontal distance from boundary of the EUT as
specified in Clause 6. The boundary of the EUT is defined by
an imaginary straight-line periphery describing a simple geometric
configuration encompassing the EUT.
This text is not very clear for me, but I think use of the "imaginary
straight-line periphery" suggests that it is not intended to define
the distance as the minimum distance between the antenna and boundary
of the EUT when the EUT is rotated.
I think that the Figure 2 suggests the same thing, and the figure
also suggests that the distance is to be measured from front, or
front or rear, of the EUT.
Does anybody know clearer interpretation about this?
And what about ANSI C63.4-2003, which simply says that:
The specified distance is the distance between the horizontal
projection onto the groundplane of the closest periphery of the EUT
and the projection onto the groundplane of the center of the axis
of the elements of the receiving antenna.
in its clause 8.2.3?
Regards,
Tom
Tomonori Sato <vef00...@nifty.ne.jp>
URL: http://homepage3.nifty.com/tsato/
-
This message is from the IEEE Product Safety Engineering Society
emc-pstc discussion list. Website: http://www.ieee-pses.org/
To post a message to the list, send your e-mail to emc-p...@ieee.org
Instructions: http://listserv.ieee.org/request/user-guide.html
List rules: http://www.ieee-pses.org/listrules.html
For help, send mail to the list administrators:
Scott Douglas emcp...@ptcnh.net
Mike Cantwell mcantw...@ieee.org
For policy questions, send mail to:
Jim Bacher: j.bac...@ieee.org
David Heald: emc-p...@daveheald.com
All emc-pstc postings are archived and searchable on the web at:
http://www.ieeecommunities.org/emc-pstc
