DocumentCode
1448078
Title
Element efficiency and noise in grid arrays
Author
De Lisio, Michael P. ; Weikle, Robert M. ; Rutledge, David B.
Author_Institution
Dept. of Electr. Eng., Hawaii Univ., Honolulu, HI, USA
Volume
46
Issue
11
fYear
1998
fDate
11/1/1998 12:00:00 AM
Firstpage
1949
Lastpage
1955
Abstract
The element efficiency of a phased array is the ratio of the radiated-to-available power of a single element, when only that element is excited. We relate this element efficiency to the output noise power generated by a quasi-optical grid amplifier array. Both electromagnetic and thermodynamic derivations are presented. These ideas are used to predict the total noise power and noise radiation pattern of grid arrays. The results are also extended to show that the output noise temperature of the entire array will be the same as the output noise temperature of a single element
Keywords
arrays; microwave power amplifiers; noise; element efficiency; grid arrays; noise radiation pattern; output noise power; output noise temperature; quasi-optical grid amplifier array; total noise power; Antenna arrays; Noise generators; Noise measurement; Phase measurement; Phase noise; Phased arrays; Power amplifiers; Power generation; Semiconductor device noise; Temperature;
fLanguage
English
Journal_Title
Microwave Theory and Techniques, IEEE Transactions on
Publisher
ieee
ISSN
0018-9480
Type
jour
DOI
10.1109/22.734517
Filename
734517
Link To Document