Omni-directional Slotted Waveguide Antenna with Low Omni Ripple at MM Wave

Pramendra Kumar Verma; Raj Kumar; Mahakar Singh

doi:10.14429/dsj.65.8025

Pramendra Kumar Verma Defence Electronics Applications Laboratory, Dehradun
Raj Kumar Defence Electronics Applications Laboratory, Dehradun
Mahakar Singh Defence Electronics Applications Laboratory, Dehradun

DOI: https://doi.org/10.14429/dsj.65.8025

Keywords: Millimeter wave, omni-directional, radiation pattern, slotted waveguide antennae

Abstract

The paper describes the design, simulation, and realisation of a slotted waveguide based horizontally polarized omni-directional antenna at millimeter wave frequency. This design has been optimised for minimum ripple in omni pattern and wide elevation coverage. It is based on radiating slots on both sides of waveguide for generating omni pattern and reduced height waveguide along with metallic wings on both sides used to obtain minimum omni pattern variation. The designed antenna has been simulated on finite element method-based ANSYS’s HFSS EM Simulator software using proper boundary conditions. A metallic strip on both side of slot on upper face of antenna has been used to provide flatness as well as strength to antenna. The antenna has the advantages of being robust, low cost, and easy to fabricate being in waveguide configuration. Measured VSWR of antenna is less than 2.0 over the frequency band of 37-40 GHz and minimum omni gain of the antenna is 0 dBi over the frequency band.

Defence Science Journal, Vol. 65, No. 2, March 2015, pp.159-162, DOI:http://dx.doi.org/10.14429/dsj.65.8025

Author Biographies

Pramendra Kumar Verma, Defence Electronics Applications Laboratory, Dehradun

Mr Pramendra Kumar Verma received his BTech in Electronics Engineering from V.B.S.P.U., Jaunpur and ME in Microwave Engineering from J.E.C., Jabalpur. His areas of research are design and development of microwave and mm wave antennae, conformal phased array antennae. He is member of ATMS society and Life Member of IETE.

Raj Kumar, Defence Electronics Applications Laboratory, Dehradun

Mr Raj Kumar obtained his ME in Microwave and Radar from University of Roorkee (presently IIT Roorkee), Roorkee. His areas of interest include mm wave antennae design, design of waveguide filters and radiometry, reflector antennae, horn antennae, conformal antennae, phased array antennae etc. He has been awarded DRDO Technology Award, Group Technology Award, and Labortary Scientist of the Year Award. He is member of ATMS Society.

Mahakar Singh, Defence Electronics Applications Laboratory, Dehradun

Mr Mahakar Singh obtained his BE Electronics and Communication and ME in Microwave and Radar from University of Roorkee (presently IIT Roorkee), Roorkee. He has been working in the field of microwave and millimeter wave antennae for the last 20 years. He is Life Fellow of ATMS Society.