Digital beam scanning in HMSIW millimeterwave leaky wave antenna

Scanning of main beam of radiation digitally at fixed millimeter wave frequency in a Substrate Integrated Waveguide (SIW) Leaky Wave Antenna (LWA) has not been investigated so far in literature. In this work a Half-Mode Substrate Integrated Waveguide (HMSIW) LWA is presented which steers its main beam digitally at fixed millimeter wave frequency of 26 GHz. Digital beam steering is made feasible by changing the status of the PIN diodes. The full wave EM simulations show that the main beam scans from 32° to 48° in the first quadrant.

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