首页|Digital Beamforming Demonstration of a Microstrip Antenna Phased Array Feeds(PAF)at 1.25 GHz

Digital Beamforming Demonstration of a Microstrip Antenna Phased Array Feeds(PAF)at 1.25 GHz

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We introduce the structure of a radio astronomy phased array feeds(PAF)beamforming demonstrator.In a laboratory environment,we have demonstrated beamforming on a received 1.25 GHz sinusoidal signal and used digital weighting techniques to plot the 2D pattern of the PAF.The radio frequency part of the demonstrator includes a 4×4 linearly polarized microstrip antenna array,all of which is connected in series with a low-noise amplifier.The signals from the central 4×2 array elements are injected into a radio frequency system-on-chip digital board,which can receive eight inputs with a bandwidth of 512 MHz.Combining the principle of undersampling,the beamforming is completed at a frequency of 1.25 GHz for the offline data,and a 2D image of the beam is plotted using beam scanning technology.

Astronomical Instrumentation-Methods and Techniques-Astronomical Databases-methodsdata analysis

仵鹏、陈卯蒸、李健、王凯、曹亮、于涵

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Xinjiang Astronomical Observatory,Chinese Academy of Sciences,Urumqi 830011,China

University of Chinese Academy of Sciences,Beijing 100049,China

Xinjiang Key Laboratory of Microwave Technology,Urumqi 830011,China

National Key R&D Program of China underNational Natural Science Foundation of China(NSFC)National Natural Science Foundation of China(NSFC)Chinese Academy of Sciences(CAS)"Light of West China"Program underChinese Academy of Sciences(CAS)"Light of West China"Program underNational Astronomical Observatories for providing the Zynq UltraScale+RFSoC ZCU111 board

2022YFC220530012073067119730782022-XBQNXZ-0122020-XBQNXZ-018

2024

10.1088/1674-4527/ad7792

天文和天体物理学研究
中国科学院国家天文台

天文和天体物理学研究

CSTPCD
影响因子：0.406
ISSN：1674-4527
年,卷(期)：2024.24(10)