Modified antipodal Vivaldi antenna for ultra-wideband communications

In this study, a modified antipodal Vivaldi antenna (AVA) with low cross-polarisation is proposed for ultra-wideband communications. The bandwidth offered by conventional single petal AVA is enhanced by adding another petal. This dual petal antenna occupies a small volume of 60 × 60 × 0.8 mm 3 and provides operating bandwidth from 2.4 GHz to frequencies >14 GHz. The proposed antenna configuration provides low cross-polarisation level which is 5 dB and an average group delay variation of 0.5 ns. The prototype antenna is fabricated and tested to validate the simulation results.

[1]  E. Gazit,et al.  Improved design of the Vivaldi antenna , 1988 .

[2]  D. Guha,et al.  Microstrip Patch Antenna With Defected Ground Structure for Cross Polarization Suppression , 2005, IEEE Antennas and Wireless Propagation Letters.

[3]  Peter Hall,et al.  Balanced antipodal Vivaldi antenna for wide bandwidth phased arrays , 1996 .

[4]  Raj Kumar,et al.  DESIGN OF DUAL POLARIZED ASYMMETRICALLY FED SLOTTED RECTANGULAR PRINTED MONOPOLE ANTENNA , 2013 .

[5]  Peng Fei,et al.  A Miniaturized Antipodal Vivaldi Antenna With Improved Radiation Characteristics , 2011, IEEE Antennas and Wireless Propagation Letters.

[6]  Tie Jun Cui,et al.  Broadband and High-Gain Planar Vivaldi Antennas Based on Inhomogeneous Anisotropic Zero-Index Metamaterials , 2011 .

[7]  J.D.S. Langley,et al.  Novel ultrawide-bandwidth Vivaldi antenna with low crosspolarisation , 1993 .

[8]  A. Fathy,et al.  DESIGN OF COMPACT VIVALDI ANTENNA ARRAYS FOR UWB SEE THROUGH WALL APPLICATIONS , 2008 .

[9]  T. L. Korzeniowski,et al.  Endfire tapered slot antennas on dielectric substrates , 1985 .

[10]  Ning Zhang,et al.  Research on a Novel Miniaturized Antipodal Vivaldi Antenna With Improved Radiation , 2013, IEEE Antennas and Wireless Propagation Letters.

[11]  A. V. Vorst,et al.  Copolar and cross-polar radiation of Vivaldi antenna on dielectric substrate , 2000 .

[12]  Jun Hua Chen,et al.  An Improved Vivaldi Antenna for Vehicular Wireless Communication Systems , 2014, IEEE Antennas and Wireless Propagation Letters.