Coherent effects in single scattering and random errors in antenna technology
(2005) In Progress in Electromagnetics ResearchPier 50. p.1339 Abstract
 Lack of knowledge prevents us from exactly calculating the behavior of electromagnetic fields. We study two extremes in this respect: scattering against randomly distributed particles ( no idea of the position or orientation of the scatterers), and random errors in antenna technology ( small deviations from what we think are the proper parameters). Random variables are used to model our lack of knowledge, and far field expressions are studied. Using the concept of characteristic functions from probability theory, results for arbitrary probability distributions are obtained. We explain an anomaly in the forward scattering direction in single scattering theory, present simple formulas for the directivity, side lobe level, and beam efficiency... (More)
 Lack of knowledge prevents us from exactly calculating the behavior of electromagnetic fields. We study two extremes in this respect: scattering against randomly distributed particles ( no idea of the position or orientation of the scatterers), and random errors in antenna technology ( small deviations from what we think are the proper parameters). Random variables are used to model our lack of knowledge, and far field expressions are studied. Using the concept of characteristic functions from probability theory, results for arbitrary probability distributions are obtained. We explain an anomaly in the forward scattering direction in single scattering theory, present simple formulas for the directivity, side lobe level, and beam efficiency for a general array antenna with random errors, and a simple formula for the scattering coefficient from a general frequency selective structure with random errors. (Less)
Please use this url to cite or link to this publication:
http://lup.lub.lu.se/record/399353
 author
 Sjöberg, Daniel ^{LU}
 organization
 publishing date
 2005
 type
 Contribution to journal
 publication status
 published
 subject
 in
 Progress in Electromagnetics ResearchPier
 volume
 50
 pages
 13  39
 publisher
 EMW Publishing
 external identifiers

 wos:000239278400002
 scopus:33947113637
 ISSN
 10704698
 DOI
 10.2528/PIER04050401
 language
 English
 LU publication?
 yes
 id
 f5c3095a6298499f941897e2e9430b0c (old id 399353)
 date added to LUP
 20070808 09:03:23
 date last changed
 20170101 04:29:36
@article{f5c3095a6298499f941897e2e9430b0c, abstract = {Lack of knowledge prevents us from exactly calculating the behavior of electromagnetic fields. We study two extremes in this respect: scattering against randomly distributed particles ( no idea of the position or orientation of the scatterers), and random errors in antenna technology ( small deviations from what we think are the proper parameters). Random variables are used to model our lack of knowledge, and far field expressions are studied. Using the concept of characteristic functions from probability theory, results for arbitrary probability distributions are obtained. We explain an anomaly in the forward scattering direction in single scattering theory, present simple formulas for the directivity, side lobe level, and beam efficiency for a general array antenna with random errors, and a simple formula for the scattering coefficient from a general frequency selective structure with random errors.}, author = {Sjöberg, Daniel}, issn = {10704698}, language = {eng}, pages = {1339}, publisher = {EMW Publishing}, series = {Progress in Electromagnetics ResearchPier}, title = {Coherent effects in single scattering and random errors in antenna technology}, url = {http://dx.doi.org/10.2528/PIER04050401}, volume = {50}, year = {2005}, }