A High Gain Vivaldi Antenna with Multiple Near-Field Dielectric Lenses and Grooved Edges

نویسندگان

چکیده

In order to expand the applications of traditional Vivaldi antenna by addressing low gain antenna, this paper combines phase distribution aperture based on analysis transmission characteristics a dielectric unit utilizing advantages artificial electromagnetic material. A more reasonable method loading lens is proposed and utilized in combination with edge grooving. comparison results shows that operates frequency range 4 16 GHz. The low-frequency boost approximately 3 dB, high-frequency 9.6 dB.

برای دانلود باید عضویت طلایی داشته باشید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

High Gain Vivaldi Antenna for Radar and Microwave Imaging Applications

An Ultrawideband (UWB) high gain compact Vivaldi antenna with end fire radiation patterns is presented for radar and microwave imaging applications. The antenna is operating for 2.9GHz to more than 11GHz with -10dB impedance bandwidth and is designed on low cost FR4 substrate of thickness 0.8mm. While designing the proposed antenna, initially a compact exponential tapered slot Vivaldi antenna i...

متن کامل

Improvements in a High Gain Uwb Antenna with Corrugated Edges

In this paper, a novel corrugated structure at the edges of the Vivaldi substrate is presented. Compared with the Vivaldi antenna without corrugated structure, the new structure has a better radiation pattern. While compared with the traditional corrugated structure, the new structure has a better front-to-back ratio (F/B ratio). Properly chosen thickness and dielectric constant of substrate en...

متن کامل

Near field imaging with negative dielectric constant lenses

A recent analysis by Pendry #J. B. Pendry, Phys. Rev. Lett. 85, 3966 !2000"$ shows that a dielectric slab with a dielectric constant %!"1 can produce a perfect image in the electrostatic limit (c →&), independent of the permeability ', and therefore is a perfect lens. Here we include retardation effects and show how distance and dissipation make the lens no longer perfect. Nevertheless we concl...

متن کامل

A Wideband High-gain Stacked Cylindrical Dielectric Resonator Antenna

Abstract—A new wideband and high-gain dielectric resonator antenna (DRA) is proposed. Three cylindrical dielectric resonators (DRs) with different materials and different sizes and a metallic cylinder are designed to obtain a wideband bandwidth and a high gain. The stacked structure provides a wideband bandwidth, and the cavity formed by the metallic cylinder provides a high gain. The measured ...

متن کامل

Microstrip Antenna Gain Enhancement using Near Zero Refractive Index Metamaterials

Some useful features of microstrip patch antennas are low profile, low weight and easy fabrication. However this type of antenna suffers from having a low gain, caused by propagation surface waves. In this paper, a new near zero refractive index metamaterial (MTM) unit cell is designed and fabricated as a superstrate over a Rectangular Microstrip Patch Antennas (RMPA). In order to obtain a maxi...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: International Journal of Rf and Microwave Computer-aided Engineering

سال: 2023

ISSN: ['1099-047X', '1096-4290']

DOI: https://doi.org/10.1155/2023/2405200