Low-cost printed antenna array built with hybrid feed for urban microwave links

This study presents a new millimetre-wave printed antenna array fed by a rectangular waveguide. This compact, light and low-cost antenna, composed of a large number of linear subarrays of patches fed by a waveguide drilled in the ground support, is well suited to urban microwave links for cellular base stations. Measurements show a peak gain of 30 dBi with an efficiency of 69%.