Abstract
Three dimensional meta surface lens is proposed to improve the gain and beam shaping of horn antenna. Hence an array of SRR as a meta surface lens has been designed, fabricated and investigated. This meta surface lens can be used to convert the spherical wave to plane wave for a wide range of frequency. It is proved by permeability and permittivity of meta surface. In this work the operating bandwidth of the proposed antenna is in the range of 9GHz to 11GHz for satellite application. The radiation pattern of E and H plane is sharpened in this work. The antenna 3dB beam width, and front to back ratio were 9.2, 28dB at 10GHz. The radiation characteristics of horn antenna with meta surface have been studied numerically and confirmed experimentally, showing an average gain improvement of ~3dB with respect to horn antenna without meta surface lens.
Highlights
With the growing need of inexpensive, simple, compact high directional antenna, pyramidal horn antenna may be the best solution
This paper presents a new technique for improving the performances of pyramidal horn antenna with meta surface lens
Meta surface lens consist of array of SRR which is presented in figure 1 with horn antenna
Summary
With the growing need of inexpensive, simple, compact high directional antenna, pyramidal horn antenna may be the best solution. Its robustness and simplicity make pyramidal horn antenna to use widely in microwave and millimeter wave systems, especially used in calibration standard due to its predictability [1]. In the past decade engineers are finding a new technique to enhance the directivity of antenna, for satellite reflector feed. In such case meta surface lens play a key role in reducing side lobe levels in radiation characteristics. This paper presents a new technique for improving the performances of pyramidal horn antenna with meta surface lens
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