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 ANSYSa€?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
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机译：本文描述了基于缝隙波导的毫米波频率水平极化全向天线的设计，仿真和实现。该设计已进行了优化，以使全向图案的纹波降到最低，并扩大了仰角范围。它基于波导两侧的辐射槽以产生全向图案，而减小高度的波导以及两侧的金属翼用于获得最小的全向图案变化。在适当的边界条件下，已在基于有限元方法的ANSYSa的HFSS EM Simulator软件上对设计的天线进行了仿真。天线上表面插槽两侧的金属条已用于为天线提供平坦度和强度。该天线的优点是坚固，成本低，并且易于制成波导配置。在37-40 GHz的频带上测得的天线VSWR小于2.0，并且在频带上天线的最小全向增益为0 dBi。国防科学学报，第65，No.2，March 2015，pp.159-162，DOI：http：//dx.doi.org/10.14429/dsj.65.8025
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