A Reconfigurable Leaky-Wave Antenna Based on Corrugated SIW with Fix-Frequency Wide Range Beam-Scanning

This paper presents a novel and easy-to-operate single-layer leaky wave antenna, a reconfigurable antenna with beam scanning capability at a fixed frequency, and the main structure is a corrugated substrate integrated waveguide (CSIW). By loading a set of capacitors and RF PIN diodes on the rectangular slot, the capacitors can isolate the radio frequency signal from the DC bias to achieve the DC blocking function. Different PIN diode configurations are used to change the radiation structure of the antenna, and changing the direction of the main beam. The prototype reconfigurable antenna can scan beams between -54° and 62° at 9 GHz.