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Publication Detailed Description
Evaluation of a dielectric-only transmitarray for generating multi-focusing near-field spots using a cluster of feeds in the Ka-Band
Journal Title
Sensors
Year (definitive publication)
2021
Language
English
Country
Switzerland
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Abstract
A transmitarray antenna is evaluated to generate a multi-focusing spot area in the Fresnel region of the antenna in the Ka-band. The antenna is designed to focus the radiated field at a certain point using a central feeding configuration. The number of feeds is increased to create as many focusing spots as feeds. The feeds are placed along an arc defined in the principal planes of the transmitarray, radiating independent near-field spots and providing a solution with a wide-angle spot scanning without an antenna displacement and a high isolation between feeds. To validate this concept, a transmitarray based on dielectric-only cells is designed and simulated under full-wave conditions. Then, this design is manufactured using a 3D printing technique, and the prototype is measured in a planar acquisition range. Measurements are performed for different feed positions in order to validate the multi-focusing capability of the antenna. Measurements and simulations show a high agreement and validate the proposed design technique.
Acknowledgements
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Keywords
Dielectric transmitarray,3D printing,Near-field focusing,Near-field multi-focusing
Fields of Science and Technology Classification
- Computer and Information Sciences - Natural Sciences
- Physical Sciences - Natural Sciences
- Chemical Sciences - Natural Sciences
- Biological Sciences - Natural Sciences
- Other Engineering and Technology Sciences - Engineering and Technology
- Electrical Engineering, Electronic Engineering, Information Engineering - Engineering and Technology
- Clinical Medicine - Medical and Health Sciences
- Other Medical Sciences - Medical and Health Sciences
Funding Records
| Funding Reference | Funding Entity |
|---|---|
| TEC2017-86619-R | Ministerio de Ciencia, Innovación y Universidades |
| COST Action TD1301 | COST (European Cooperation in Science and Technology) |
| PAPI-20-PF-15 | Universidad de Oviedo |
| GRUPIN-IDI/2018/000191 | Comissão Europeia |
Contributions to the Sustainable Development Goals of the United Nations
With the objective to increase the research activity directed towards the achievement of the United Nations 2030 Sustainable Development Goals, the possibility of associating scientific publications with the Sustainable Development Goals is now available in Ciência-IUL. These are the Sustainable Development Goals identified by the author(s) for this publication. For more detailed information on the Sustainable Development Goals, click here.
