Design of a Millimeter-Wave Frequency-Scanning Slot Array Antenna in SIW Technology

Abstract

In this paper, design and implementation of a frequency-scanning slot array antenna in the 28 to 32 GHz frequencies, has been presented. The feeding network of the proposed array is based on a meander Surface Integrated Waveguide (SIW) which is fabricated by low-cost Printed Circuit Board (PCB) technology. The antenna has a narrow fan beam with a beamwidth of 10 degrees in azimuth, realized gain of 10 dBi and Side Lobe Level (SLL) of better than −10 dB. The antenna is able to cover the scan area of 90 degrees by frequency sweep with a rate of 10 degree/400 MHz.