Fully integrated LNA & antenna for ultra-LElow noise figure receivers

被引:0
|
作者
Kruger, Paulus [1 ,2 ]
Visser, Barend [1 ]
Prinsloo, David [2 ]
机构
[1] North West Univ, Ctr Space Res, Potchefstroom, South Africa
[2] Netherlands Inst Radio Astron, Dwingeloo, Netherlands
来源
2017 47TH EUROPEAN MICROWAVE CONFERENCE (EUMC) | 2017年
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D O I
暂无
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
A simple, inexpensive, fully integrated low-noise amplifier and antenna for the Square Kilometer Array (SKA) Mid-Frequency Aperture Array (MFAA) is presented which achieves a receiver noise figure of about 0.4 dB over more than an octave bandwidth. A novel design technique was used which makes it easy to match the antenna directly to the first amplification transistors, without using an impedance matching circuit, thereby achieving a noise figure close to the minimum noise figure of the transistors used. The receiver also demonstrates how a single-ended amplifier with a floating ground can be used for a differential, planar antenna, by using a balun on the output of the amplifier. These receivers can be used stand-alone in a sparce, irregular array or closely packed in a dense, regular array or in a mixed system, making it possible to investigate various array configurations for the SKA MFAA.
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页码:58 / 61
页数:4
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