Spiraphase-type leaky-wave structure
| Autor: | Daniel Seseña-Martinez, Alexander E. Martynyuk, Jorge Rodriguez-Cuevas, Jose I. Martinez-Lopez |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Physics
Reconfigurable antenna business.industry Leaky wave antenna Capacitive sensing 020208 electrical & electronic engineering General Physics and Astronomy Control reconfiguration 020206 networking & telecommunications 02 engineering and technology Radiation Sweep frequency response analysis Square (algebra) Electronic Optical and Magnetic Materials law.invention Radiation pattern Optics law 0202 electrical engineering electronic engineering information engineering Electrical and Electronic Engineering business |
| Zdroj: | Journal of Electromagnetic Waves and Applications. 31:561-576 |
| ISSN: | 1569-3937 0920-5071 |
| DOI: | 10.1080/09205071.2017.1296788 |
| Popis: | A leaky-wave structure (LWS) based on two stacked spiraphase-type reflectarrays (RAs) is analysed in this paper. Each RA contains capacitively loaded ring slot elements arranged at the nodes of a square periodic grid. The proposed LWS performs frequency scanning of a conical beam by changing the cone aperture angle 2θ0. Furthermore, the reconfiguration of the radiation pattern can be achieved by rotating the RA elements. Four Ka-band LWSs with different angular positions of the capacitive loads at the top RA were designed, fabricated and tested to demonstrate the pattern reconfiguration capability. A full-wave mathematical model was used to optimize the reflectarray elements and a simplified mathematical model was developed to predict the radiation characteristics of the whole structure. It was experimentally proven that frequency sweep from 36.37 to 39.9 GHz leads to the change of the angle θ0 from 0° to 38°. The increment of θ0 from 0° to 23° at 36.4 GHz was observed, when the reactive loads of ... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
| Nepřihlášeným uživatelům se plný text nezobrazuje | K zobrazení výsledku je třeba se přihlásit. |