New Method for Predicting the Electromagnetic Field at a Finite Distance Using Fresnel Field Transformation

In this letter, we propose a new method to predict the field at the finite distance from a source antenna. The Fresnel fields measured using a far-field measurement system are transformed into the Fresnel or finite-distance far field, after multiplying with a weighting factor. To check the validity...

Full description

Saved in:
Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2008, Vol.7, p.291-293
Main Authors: Oh, Soon-Soo, Yun, Jae-Hoon
Format: Article
Language:English
Subjects:
Antenna measurement
Antenna measurements
Aperture antennas
Current distribution
Electromagnetic fields
Electromagnetic measurements
Fresnel field
Fresnel region measurement
Horn antennas
Magnetic field measurement
Microwave antennas
Radiation safety
Space technology
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this letter, we propose a new method to predict the field at the finite distance from a source antenna. The Fresnel fields measured using a far-field measurement system are transformed into the Fresnel or finite-distance far field, after multiplying with a weighting factor. To check the validity of this method, we compared the results with a simulated aperture antenna with uniform current distribution, as well as with an actual horn antenna. The transformed patterns agreed closely with the exact field patterns. The proposed method is very useful for predicting the electromagnetic field located out of chamber range in a far-field measurement system.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2008.921373