Broadband frequency and angular response of a sinusoidal bull’s eye antenna
Research output: Contribution to journal › Article › peer-review
Authors
Colleges, School and Institutes
External organisations
- Universidad Pública de Navarra
Abstract
A thorough experimental study of the frequency and beaming angle response of a metallic leaky-wave bull's eye antenna working at 77 GHz with a sinusoidally corrugated profile is presented. The beam scanning property of these antennas as frequency is varied is experimentally demonstrated and corroborated through theoretical and numerical results. From the experimental results the dispersion diagram of the n = −1 and n = −2 space harmonics is extracted, and the operation at different frequency regimes is identified and discussed. In order to show the contribution of each half of the antenna, numerical examples of the near-field behavior are also displayed. Overall, experimental results are in good qualitative and quantitative agreement with theoretical and numerical calculations. Finally, an analysis of the beamwidth as a function of frequency is performed, showing that it can achieve values below 1.5° in a fractional bandwidth of 4% around the operation frequency, which is an interesting frequency-stable broadside radiation.
Details
Original language | English |
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Article number | 265103 |
Pages (from-to) | 1-6 |
Number of pages | 6 |
Journal | Journal of Physics D: Applied Physics |
Volume | 49 |
Issue number | 26 |
Publication status | Published - 25 May 2016 |
Keywords
- Bull's eye, Corrugated surface, Leaky-wave antennas (LWAs), Millimetre-waves