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Sinuous Antenna for UWB Radar Applications
Luciano Mescia1, Gianvito Mevoli1, Claudio Maria Lamacchia2
1Department of Electrical and Information Engineering, Politecnico di Bari, Via E. Orabona 4, 70125 Bari, Italy.
Sensors (Basel, Switzerland)
|January 11, 2022
Summary
This paper reviews advancements in sinuous antennas, covering geometry, dielectric loading, and miniaturization. New supershaped designs enhance directivity, gain, and efficiency for improved antenna performance.
Area of Science:
- Electromagnetics and Wave Propagation
- Antenna Theory and Design
Background:
- Sinuous antennas are frequency-independent, utilizing self-complementary and log-periodic geometries.
- Conventional sinuous antennas present challenges in size and radiation behavior trade-offs.
Purpose of the Study:
- To detail recent progress in sinuous antenna technology.
- To explore geometry, dielectric structures, and miniaturization techniques.
- To introduce novel supershaped sinuous antennas.
Main Methods:
- Analysis of frequency-independent antenna principles (self-complementary, log-periodic).
- Investigation of geometric modifications (meandering, dielectric loading, cavity backing).
- Development and evaluation of supershaped sinuous antennas merging superformula and sinuous curves.
Main Results:
- Optimized trade-offs between antenna size and radiation achieved through geometric and dielectric modifications.
- Cavity backing enables unidirectional radiation.
- Supershaped designs demonstrate improved directivity, beam stability, gain, and radiating efficiency.
Conclusions:
- Sinuous antenna design has advanced significantly through geometric optimization and novel shaping.
- Supershaping offers a promising avenue for enhanced antenna performance.
- Further research can leverage these techniques for next-generation antennas.
