Half Mode Substrate Integrated Waveguide Antenna Embedded with Slots for Multiband Operations

The Half-mode Substrate Integrated Waveguide (HMSIW) has accumulated vast attentiveness since it was launched. This is vitally due to the afforded benefit of size reduction in contrast to a Full mode SIW and mainly to the availability of vent in the fundamental configuration. In this article, a semi-mode Substrate Integrated Waveguide (SIW) antenna is proposed for multi-band applications. This antenna is built by loading an inverted ‘L’ slot, a rectangular slot and a square slot with a small metallic incision on a rectangular SIW cavity for multiple band radiation. The introduction of slots generates a hybrid mode as a combination of TE110 and TE120 modes by coupling of these modes through metallic vias. This in turn radiate an inferior resonant frequency. The constructed half-mode SIW antenna gives in multiband response due to resonant slots and influence of microstrip inset feed thus restoring the gain and radiation characteristics of full SIW.