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Element efficiency and noise in grid arrays

De Lisio, Michael P. and Weikle, Robert M., II and Rutledge, David B. (1998) Element efficiency and noise in grid arrays. IEEE Transactions on Microwave Theory and Techniques, 46 (11, pt). pp. 1949-1955. ISSN 0018-9480. http://resolver.caltech.edu/CaltechAUTHORS:LISieeetmtt98

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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.


Item Type:Article
Additional Information:© Copyright 1998 IEEE. Reprinted with permission. Manuscript received March 20, 1998; revised July 27, 1998. This work was supported by the U.S. Air Force Material Command/Rome Laboratory and by the U.S. Army Research Office under a MURI Grant to Caltech.
Subject Keywords:Element efficiency, grid arrays, noise, quasi-optics
Record Number:CaltechAUTHORS:LISieeetmtt98
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:LISieeetmtt98
Alternative URL:http://dx.doi.org/10.1109/22.734517
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:6883
Collection:CaltechAUTHORS
Deposited By: Archive Administrator
Deposited On:30 Dec 2006
Last Modified:26 Dec 2012 09:26

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