Effects of modulated spacing on the radiation patterns

Author

Raju, G.S.N. ; Sridhar, R. ; Raju, K.S. ; Rao, P.S. ; Reddy, N.S. ; Gottumukkala, K.R.

Author_Institution

A.U. Coll. of Eng., Visakhapatnam, India

fYear

1991

fDate

24-28 June 1991

Firstpage

1424

Abstract

It has been demonstrated that it is possible to thin an array as well as to improve radiation pattern characteristics with an appropriate spacing function. A study is carried out to analyze the effect of thinning by considering a modulated spacing function. Using a specified spacing function, radiation patterns are evaluated for array lengths of 50, and number of elements equal to 80 and 100. It is found that the near-in-sidelobe level is reduced for a modulated spacing function and that the main beam width is found to remain constant. These advantages are not found in the case of uniform spacing. Even after thinning the array, the modulated spacing function is found to improve the overall radiation pattern characteristics.<>

Keywords

antenna arrays; antenna radiation patterns; modulation; array lengths; array thinning; main beam width; modulated spacing function; near-in-sidelobe level; radiation patterns; Antenna arrays; Antenna radiation patterns; Antenna theory; Antennas and propagation; Apertures; Design methodology; Optical modulation; Phased arrays; Radar antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1991. AP-S. Digest

Conference_Location

London, Ontario, Canada

Print_ISBN

0-7803-0144-7

Type

conf

DOI

10.1109/APS.1991.175117

Filename

175117