Constant gain modified antipodal vivaldi antenna with rake‐like wires operating over 3.1–10.6 GHz

Abstract

The main aim of this study is to design an Ultra‐Wide Band antenna with an almost constant level of gain over 3.1–10.6 GHz. A modified antipodal Vivaldi antenna with rake‐like wires (called MAVARW‐III), is designed for this goal. The MAVARW‐III has two flared metal arms with rake‐like wires printed on a dielectric substrate. Rake‐like wires are primarily associated with balancing the gain over the operating bandwidth of the antenna. The proposed MAVARW‐III has 7.90 dB minimum gain level over the bandwidth in simulations. The difference between the minimum and maximum value of the gain is <1.55 dB over whole frequency range in simulations. The proposed MAVARW‐III is characterized both numerically and experimentally with a good agreement. The given design approach can be extended to relatively larger or smaller MAVARWIIIs to achieve almost constant gain level over desired other frequency bands.

Circular ring structured ultra-wideband antenna for wearable applications

“…The antenna operates from 3.3‐11 GHz and notch band properties are attained by placing a rectangular slot on the feed line. An UWB antenna with Vivaldi structure and rake wires is designed to attain constant gain in the operating frequency 3.1‐10.6 GHz …”

“…An UWB antenna with Vivaldi structure and rake wires is designed to attain constant gain in the operating frequency 3.1-10.6 GHz. 11 There are many structures and symbols which depict the national integrity in India. The one among them is the symbol of Ashoka chakra which serves as a unique identity of the country's sensibilities.…”