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Constant gain modified antipodal vivaldi antenna with rake‐like wires operating over 3.1–10.6 GHz
Author(s) -
Küçüksarı Öznur,
Çimen Sibel,
Çakır Gonca
Publication year - 2018
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.31134
Subject(s) - antipodal point , vivaldi antenna , bandwidth (computing) , rake , antenna gain , high gain antenna , dielectric , antenna (radio) , materials science , antenna factor , physics , electronic engineering , antenna measurement , optoelectronics , electrical engineering , engineering , telecommunications , mathematics , geometry , mechanical engineering
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.