Element efficiency and noise in grid arrays

被引：5

作者：

De Lisio, MP ^{[1
]}

Weikle, RM

Rutledge, DB

机构：

[1] Univ Hawaii Manoa, Dept Elect Engn, Honolulu, HI 96822 USA

[2] Univ Virginia, Dept Elect Engn, Charlottesville, VA 22903 USA

[3] CALTECH, Dept Elect Engn, Pasadena, CA 91125 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 1998年 / 46卷 / 11期

关键词：

element efficiency; grid arrays; noise; quasi-optics;

D O I：

10.1109/22.734517

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

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 will be presented. These ideas will be 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.

引用

页码：1949 / 1955

页数：7

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