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A Switchable Biomimetic Antenna Array.
- Source :
- IEEE Antennas & Wireless Propagation Letters; Dec2021, Vol. 20 Issue 12, p2422-2426, 5p
- Publication Year :
- 2021
-
Abstract
- Biomimetic antenna arrays inspired by the fly Ormia ochracea showed a promising improvement of the angle estimation capabilities of radar sensors. So far, there is usually a loss of output power associated with this improvement decreasing the detectability of weak radar targets. In this letter, an electronically switchable two-element biomimetic antenna array is presented for the first time. This array provides the possibility to switch between a biomimetic antenna mode with enhanced phase sensitivity and a conventional antenna mode with a better signal-to-noise ratio. Circuit requirements are discussed, the design process is described, and a realization in the 77 GHz range using p-i-n diodes as switching elements is presented. Radar measurements verify the concept. By switching, the phase sensitivity of the realized array can be enhanced by a factor of three with a relative power loss of maximum 14 dB. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15361225
- Volume :
- 20
- Issue :
- 12
- Database :
- Complementary Index
- Journal :
- IEEE Antennas & Wireless Propagation Letters
- Publication Type :
- Academic Journal
- Accession number :
- 154265613
- Full Text :
- https://doi.org/10.1109/LAWP.2021.3113562