Cold-Source Noise Measurement of a Differential Input Single-Ended Output Low-Noise Amplifier Connected to a Low-Frequency Radio Astronomy Antenna

被引：14
|
作者：
Sutinjo, Adrian T. [1 ]
Ung, Daniel C. X. [1 ]
Juswardy, Budi [1 ]
机构：
[1] Curtin Univ, Curtin Inst Radio Astron, Int Ctr Radio Astron Res, Bentley, WA 6102, Australia
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2018年 / 66卷 / 10期
关键词：
Antenna measurements; differential amplifiers; low-noise amplifiers; noise measurements; radio astronomy; receiving antennas; thermal noise; UHF circuits; VHF circuits; ARRAY; DESIGN; SENSITIVITY; INSTRUMENT;
D O I：
10.1109/TAP.2018.2854285
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：
We present two methods for measuring the noise temperature of a differential input single-ended output low-noise amplifier (DISO LNA) connected to an antenna. The first method is the direct measurement of the DISO LNA and antenna in an anechoic chamber at ambient temperature. The second is a simple and low-cost noise parameter extraction of the DISO device using a coaxial long cable. The reconstruction of the DISO noise parameter from the noise wave measurements of the DISO LNA with one terminated input port is discussed in detail. We successfully applied these methods to the Murchison widefield array LNA and antenna.
引用
收藏
页码：5511 / 5520
页数：10
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