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Analysis of Vivaldi array antenna for phased array feeds application

Date Issued
2017
Author(s)
Liu, Lei
•
Grainge, Keith
•
DOI
Abstract
This paper focus on the analysis of S parameter and beam pattern of an array of Vivaldi antennas used by a cryogenically cooled phased array feeds for radio astronomy application. The low-noise cryogenic front-end operates across the 4 – 8 GHz band and can simultaneously form four independent beams. Signals from the dual-polarized Vivaldi antenna array are combined by an analog beamformer located inside the cryostat. The vacuum window consists of a dome-shaped structure made of Plexiglas. We report on the results of the investigation of mutual coupling between the antenna elements and how the dome affects S parameter and beam pattern.
Coverage
2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO)
Start page
233
Conferenece
2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications (NEMO 2017)
Conferenece place
Seville, Spain
Conferenece date
17-19 May, 2017
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Rights
open.access
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