K-band substrate integrated array antenna with class-3 antennas RPE (20∼24GHz) of the ETSI standard document

The design and implementation of a 16×32 K-band array antenna based on the substrate integrated waveguide (SIW) technology are presented in this paper. The simulated annealing algorithm is employed to implement the accurate pattern synthesis and optimization, and then a 1-to-16 feed network is achieved by using an alternating phase SIW power divider. Finally, a prototype antenna array is fabricated through the normal PCB process, and experimental results agree well with simulations. Such an array antenna is able to meet the Class 3 antennas Radiation Pattern Envelope (RPE) (20~24 GHz) of the ETSI (European Telecommunications Standards Institute) standard document. The measured antenna gain is more than 28.0 dBi within the frequency range of 150 MHz.