Abstract
This paper focuses on the analysis of S parameters and beam patterns of an array of Vivaldi antennas used in a cryogenically cooled phased array feeds for radio astronomical application. The low-noise cryogenic front-end operates across the 4-8 GHz band and can simultaneously forms four independent beams. Signals from the dual-polarized Vivaldi antenna array are combined by an analogue beam former located inside the cryostat. The vacuum window consists of a dome-shaped structure made of Plexiglas. We report on results of investigation of mutual coupling between the antenna elements and how the dome affects S parameter and beam pattern.
Original language | English |
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Title of host publication | 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications, NEMO 2017 |
Publisher | IEEE |
Pages | 233-235 |
Number of pages | 3 |
ISBN (Electronic) | 9781509048373 |
DOIs | |
Publication status | Published - 29 Jun 2017 |
Event | 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications, NEMO 2017 - Seville, Spain Duration: 17 May 2017 → 19 May 2017 |
Conference
Conference | 2017 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization for RF, Microwave, and Terahertz Applications, NEMO 2017 |
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Country/Territory | Spain |
City | Seville |
Period | 17/05/17 → 19/05/17 |
Keywords
- beam pattern
- cryogenic cooled technology
- phased array feeds
- S parameter
- Vivaldi array antenna