TY - GEN
T1 - The Research on Excitation Method of All-metal Vivaldi Antenna Array Feeder for FAST
AU - Zhang, Hu
AU - Lu, Hong Da
AU - Liu, Yong
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - In order to improve the sensitivity and efficiency of the radio telescope receiver system and to solve the problem of discontinuous field of view of the feed cluster, a phase array feed is proposed as the feed of the radio telescope, and the amplitude and phase control of the array beam is an important part of the phase array feed design. In this paper, a 61-element phased array feeder for Five-hundred-meter Aperture Spherical radio Telescope (FAST) based on all-metal Vivaldi antenna is proposed. The direct conjugate field matching (DCFM) excitation method and the indirect conjugate field matching (ICFM) excitation method are compared and analyzed. The performances of the beamforming based on the proposed feeder array is verified by co-simulation which consists of full-wave method and quasi-optical method. In the frequency range of 2-6 GHz, the aperture efficiencies above 60% are obtained.
AB - In order to improve the sensitivity and efficiency of the radio telescope receiver system and to solve the problem of discontinuous field of view of the feed cluster, a phase array feed is proposed as the feed of the radio telescope, and the amplitude and phase control of the array beam is an important part of the phase array feed design. In this paper, a 61-element phased array feeder for Five-hundred-meter Aperture Spherical radio Telescope (FAST) based on all-metal Vivaldi antenna is proposed. The direct conjugate field matching (DCFM) excitation method and the indirect conjugate field matching (ICFM) excitation method are compared and analyzed. The performances of the beamforming based on the proposed feeder array is verified by co-simulation which consists of full-wave method and quasi-optical method. In the frequency range of 2-6 GHz, the aperture efficiencies above 60% are obtained.
KW - Conjugate Field Matching Excitation
KW - Focal Plane Field Analysis
KW - Phased Array Feed
UR - http://www.scopus.com/inward/record.url?scp=85148289952&partnerID=8YFLogxK
U2 - 10.1109/CAMA56352.2022.10002687
DO - 10.1109/CAMA56352.2022.10002687
M3 - Conference contribution
AN - SCOPUS:85148289952
T3 - IEEE Conference on Antenna Measurements and Applications, CAMA
BT - 2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022
PB - Institute of Electrical and Electronics Engineers
T2 - 2022 IEEE Conference on Antenna Measurements and Applications, CAMA 2022
Y2 - 14 December 2022 through 17 December 2022
ER -