A novel monofilar-Archimedean metamaterial inspired leaky-wave antenna for scanning application for passive radar systems
| Autor: | Ernesto Limiti, Abdul Ali, Mohammad Alibakhshikenari, Bal Singh Virdee |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
Acoustics
Leaky wave antenna 02 engineering and technology Settore ING-INF/01 - Elettronica 01 natural sciences Passive radar 010309 optics metamaterial transmission lines 0103 physical sciences monofilar Archimedean spiral slot 0202 electrical engineering electronic engineering information engineering leaky-wave antenna scanning antenna Electrical and Electronic Engineering Spiral inductor dewey620 Physics business.industry dewey600 Bandwidth (signal processing) Metamaterial 020206 networking & telecommunications Condensed Matter Physics Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Antenna efficiency Global Positioning System business Metamaterial antenna |
| Zdroj: | Microwave and Optical Technology Letters |
| ISSN: | 0895-2477 |
| DOI: | 10.1002/mop.31300 |
| Popis: | A novel backfire-to-endfire leaky-wave antenna is presented with ability to scan from -25ο to +45ο. The antenna is based on metamaterial transmission-lines (MTM-TLs) and is implemented using Monofilar Archimedean spiral and rectangular slots, spiral inductors and metallic via-holes. The slots act as series left-handed capacitances, and the spirals with via-holes provide the shunt left-handed inductances to realize the metamaterial antenna. A prototype antenna was fabricated prototype on FR4 dielectric substrate, which has an electrical size of 0.0302λo×0.0357λo×0.0008λo, where λo is free space wavelength at 165 MHz. Measured bandwidth of the antenna is 710 MHz (165-875 MHz) corresponding to a fractional bandwidth of 136.5%. The main advantage of the antenna is its ability to scan over a wide angle from -25 degrees to +45 degrees with acceptable gain and radiation efficiency of 1.2 dBi and 50.1%, respectively, measured at 400 MHz. The wide scanning attributes of the antenna make it suitable for passive radar applications to scan across the VHF-UHF bands for FM-Radio, television, mobile phones and GPS applications. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text