Phased-array radars: Past, astounding breakthroughs and future trends

被引：0
|
作者：
Brookner, Eli [1 ]
机构：
[1] IEEE
来源：
Microwave Journal | 2008年 / 51卷 / 01期
关键词：
Phased-array radars have seen ever increasingly wider use around the world over the last five decades. In recent years; they have seen breakthroughs that led to capabilities not possible in the past. This is exemplified by the development of GaAs integrated microwave circuits called monolithic microwave integrated circuits (MMIC) that make it possible to build active electronically scanned arrays (AESA) that have lighter weight; smaller volume; higher reliability and lower cost. These developments have reached the point where it is now possible to build a low-cost 35 GHz phased array for a missile seeker costing $30/element (total cost of array including all electronics divided by the number of elements). This is made possible because integration allows the whole T/R module to be put on a single chip. For some applications; it will soon be possible to put multiple receivers or transmitters on a single chip. The advances provided by Moore's Law have now made it feasible to do digital beam forming with all its numerous advantages. This article describes these advances and also covers the potential for GaN and SiC chips that have the capability of higher peak power by a factor often than GaAs chips; arrays with instantaneous bandwidths of up to 33:1; SiGe low-cost T/R modules and low-cost MEMS arrays. A real radar application for multiple-input multiple-output (MIMO) has been demonstrated by MIT's Lincoln Laboratory; which allows the coherent combining of two radars to achieve a 9 dB increase in sensitivity. MIMO also makes possible the optimum removal of clutter in over the horizon (OTH) and airborne radars by permitting adaptive control of the transmit antenna pattern in the receiver;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Journal article (JA)
引用
收藏
页码：30 / 50
相关论文
共 50 条
12345