Configuration of Spherical Near-Field Ranges

Authors: Doren W. Hess
Publication: AMTA 1981
Copyright Owner: NSI-MI Technologies

In principle, spherical near-field scanning measurements are performed in the same way as conventional far-field measurements except that the range length can be reduced. This provides a natural advantage to scanning in spherical coordinates over other coordinate systems due to the ready availability of equipment. However, special considerations must be given to near-field range design because of the necessity for phase measurement capability, mechanical accuracy and the need to handle large quantities of data.

Based on experience with spherical near-field measurements carried out during verification testing of a spherical near-field transformation algorithm, we discuss the practical aspects of constructing a near-field range. In particular we will consider range alignment procedure, engineering of the RF signal path and times for data collection and processing.

 

Atlanta

1125 Satellite Blvd. NW,
Ste. 100
Suwanee, GA 30024 USA

+1 678 475 8300
+1 678 542 2601

Los Angeles

19730 Magellan Dr.
Torrance, CA 90502 USA

+1 310 525 7000
+1 310 525 7100

NSI-MI UK

Unit 51 Harley Rd.
Sheffield, S11 9SE UK

+44 7493 235224
  www.nsi-mi.co.uk

AMTA 2021

Daytona Beach, FL Finding your local time... 7 Days 2021.amta.org

Latest Tweets