5 GHz high gain slotted SIW epsilon near zero antenna array for wireless communications

Abstract

Abstract New types of antennas such as Substrate Integrated Waveguide (SIW) antennas are being used for high frequency applications. In this paper, the development of an array of novel slotted SIW epsilon near zero (ENZ) antenna is presented. Due to the limited fabrication facilities, the study is conducted in the 5 GHz band. The effective permittivity falls to zero at the cut off frequency of the waveguide. This impact is utilized to make an effective ENZ material in an ENZ super tunnelling waveguide. The design of 1 × 2, 1 × 4 antenna array is presented. The design of microstrip power dividers for feeding the array element is discussed. The presented antenna array achieve higher gain than the previously designed antennas. The prototype of the 1 × 4 SIW ENZ antenna array is fabricated and the measurement results are compared with the simulated studies. This work pertains to investigation on the array of SIW antennas for millimetre wave applications.