Electrical Engineering
      and Computer Sciences

Electrical Engineering and Computer Sciences

COLLEGE OF ENGINEERING

UC Berkeley

Impact of phase and amplitude errors on array performance

Omar Mohammed Bakr and Mark Johnson

EECS Department
University of California, Berkeley
Technical Report No. UCB/EECS-2009-1
January 1, 2009

http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-1.pdf

This paper analyzes the effect of errors in antenna weights on the performance of adaptive array systems, both in the case when an array is used to maximize the gain in a desired direction and in the case when an array is used to null interfering signals. We begin by deriving an explicit characterization of the loss in array gain due to phase errors in the optimal antenna weights. Then, we examine interference rejection in the presence of amplitude and phase errors in the antenna weights. We prove that the loss in interference rejection is independent of the number of antennas. For both cases, we give numerical simulations that validate our analysis.


BibTeX citation:

@techreport{Bakr:EECS-2009-1,
    Author = {Bakr, Omar Mohammed and Johnson, Mark},
    Title = {Impact of phase and amplitude errors on array performance},
    Institution = {EECS Department, University of California, Berkeley},
    Year = {2009},
    Month = {Jan},
    URL = {http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-1.html},
    Number = {UCB/EECS-2009-1},
    Abstract = {This paper analyzes the effect of errors in antenna weights on the performance of adaptive array systems, both in the case when an array is used to maximize the gain in a desired direction and in the case when an array is used to null interfering signals. We begin by deriving an explicit characterization of the loss in array gain due to phase errors in the optimal antenna weights. Then, we examine interference rejection in the presence of amplitude and phase errors in the antenna weights. We prove that the loss in interference rejection is independent of the number of antennas. For both cases, we give numerical simulations that validate our analysis.}
}

EndNote citation:

%0 Report
%A Bakr, Omar Mohammed
%A Johnson, Mark
%T Impact of phase and amplitude errors on array performance
%I EECS Department, University of California, Berkeley
%D 2009
%8 January 1
%@ UCB/EECS-2009-1
%U http://www.eecs.berkeley.edu/Pubs/TechRpts/2009/EECS-2009-1.html
%F Bakr:EECS-2009-1