A Wideband Ultra-Low Noise Room Temperature LNA for Radio astronomy Applications

被引：0
|
作者：
Parikh, Gaurav B. [1 ]
Raut, Anil [1 ]
机构：
[1] Tata Inst Fundamental Res TIFR, GMRT, NCRA, Pune, India
来源：
2023 IEEE RADIO AND ANTENNA DAYS OF THE INDIAN OCEAN, RADIO | 2023年
关键词：
Ultra Low noise Amplifier (LNA); Wideband; High Gain; Gain Flatness; High Dynamic Range; Radio Astronomy;
D O I：
10.1109/RADIO58424.2023.10146060
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：
This paper presents the design of Wideband Ultra Low Noise room temperature Low Noise Amplifier (LNA) for radio astronomy applications in 500-1500 MHz frequency band. The Circuit Design, Simulation and optimization were performed using Advance Design Systems (ADS) software. The LNA is a 3-stage cascade amplifier, designed using Avago Make ATF54143 E-pHEMT device. The designed amplifier has a flat gain of 40 +/- 0.5 dB and noise temperature of 40 degrees k (similar to 0.5 dB) at room temperature over the desired frequency band. The LNA is unconditionally stable with good input (S11) and output (S22) match over the band. It has a very high dynamic range with P1dB of +10 dBm and TOI of +15.5 dBm. With this specification it is ideal to be used in radio astronomy applications.
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页数：3
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