Analysis and research on analog beamforming performance of phased array receiver

被引：0

作者：

Wang, Kai ^{[1
,2
]}

Cao, Liang ^{[1
,2
]}

Duan, Xuefeng ^{[1
,2
]}

Yan, Hao ^{[1
,2
,3
]}

Li, Jiahui ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Xinjiang Astron Observ, Urumqi 830011, Peoples R China

[2] Xinjiang Key Lab Microwave Technol, Urumqi 830011, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

SCIENTIA SINICA-PHYSICA MECHANICA & ASTRONOMICA | 2025年 / 55卷 / 06期

关键词：

radio telescope; receiver; phased array; beamforming; noise temperature;

D O I：

10.1360/SSPMA-2024-0547

中图分类号：

P1 [天文学];

学科分类号：

0704 ;

摘要：

To analyze and study the analog beamforming performance of phased array receivers, a microstrip antenna array of phased array receiver front-end operating at 1.25 GHz is designed and fabricated, and an experimental platform for analog beamforming is constructed. Three beamforming methods, namely uniform weighting, conjugate field matching and maximum signal-to-noise ratio, are used to measure and compare the antenna array patterns. Then, the calibration method of cold and ambient temperature loads and the weights of three beamforming algorithms are selected, and the noise temperatures corresponding to the phased array receiver with complete links are calculated respectively. The measurement results indicate that the beamforming method with the maximum signal-to-noise ratio attains the lowest noise temperature, making it a more suitable beamforming method for radio astronomical receivers detecting faint signals. The above research work systematically verifies the array-level beamforming algorithm and the noise performance of the formed beam, providing crucial technical support for the future application of the phased array receiver at the reflector level of the QTT main focal position, such as array design, system integration, beamforming algorithm selection, and beam performance analysis.

引用

页数：12

共 17 条

[1]

Beresford Ron, 2017, 2017 32 GEN ASSEMBLY

[2]

Chen MZ, 2017, SCI SIN-PHYS MECH AS, V47, DOI 10.1360/SSPMA2016-00505

[3]

Chippendale AP, 2015, PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON ELECTROMAGNETICS IN ADVANCED APPLICATIONS (ICEAA), P541, DOI 10.1109/ICEAA.2015.7297174

[4]

Chippendale AP, 2015, 2015 1st URSI Atlantic Radio Science Conference (URSI AT-RASC)

[5]

Dunning A, 2016, EUR MICROW CONF, P1568, DOI 10.1109/EuMC.2016.7824657

[6]

Lao B Q, 2014, Ann Shanghai Observ Acad Sin, P21

[7]

Shaw RD, 2017, PROC EUR CONF ANTENN, P3832, DOI 10.23919/EuCAP.2017.7928238

[8]

Tian J Y, 2023, Dissertation, P44

[9]

van Cappellen Wim A., 2010, 2010 IEEE International Symposium on Phased Array Systems and Technology (ARRAY 2010), P640, DOI 10.1109/ARRAY.2010.5613297

[10]

Veidt B, 2015, 2015 9TH EUROPEAN CONFERENCE ON ANTENNAS AND PROPAGATION (EUCAP)

← 1 2 →