We propose a wire-based parabolic reflector antenna capable of electrically controlled beam steering through the integration of voltage-programmable RF switches. By toggling the switch modes, the surface current distribution on the reflector is reconfigured in real time, enabling angular adjustments of the main beam within the azimuthal plane. The antenna was designed and optimized using the FEKO electromagnetic simulator, with performance verified through experimental measurements. Key parameters including reflector diameter, focal length, and feed dimensions were carefully selected to maximize gain and demonstrate controllable beam steering. The fabricated prototype operates at 1.7 GHz with a 50 cm aperture and a 75 cm focal length, achieving a measured gain of 7.5 dBi. Beam steering up to 1° was demonstrated without mechanical reconfiguration. For low Earth orbit (LEO) altitudes of around 1500 km, this angular variation corresponds to approximately 26 km of ground spatial coverage, whereas for medium Earth orbit (MEO) altitudes of around 5200 km, it corresponds to approximately 90 km. The proposed antenna offers a compact, lightweight, and electronically reconfigurable solution suitable for integration into future spaceborne and mobile communication platforms.