Reconfigurable SIW-Based Leaky-Wave Antenna Composed of Longitudinal Cells

A novel fixed frequency beam-steering leaky-wave antenna (LWA) is presented in this manuscript. Radiation occurs through thin offset longitudinal slots etched on a substrate integrated waveguide (SIW). The achieved by implementing GaAs varactor diodes the backside of antenna. Sweeping bias voltage from 1V to 15V causes phase constant variation, leading 25° at 28.5 GHz. key novelties proposed reconfigurable are low-profile and electronic capability using single diode per cell located antenna's backside. Moreover, placing components reduces unwanted blockage effects radiation. thickness, length, width 0.32 mm, 95 24 respectively. measured peak realized gain GHz 9 ± 0.8 dBi. Low-profile, small ease fabrication, make LWA suitable for 5G applications. detailed sensitivity analysis along with experimental validations were performed prove validity design.