A Phased Array Element Antenna for Ka-Band Satellite Communications

A phased array element antenna for Ka-band satellite communication is designed in this paper. The antenna is composed of eight layers, and the working frequency of the antenna is 19.6-22GHz. The microstrip line is split into two parts in order to provide power to the two radiation patches which result in the phase difference of electric field radiation of 90°. This is the reason that circularly polarized waves are generated. Within the operating frequency, the max gain of the S11 is 6.7491dB with an omnidirectional radiation pattern in E-plane. The axial ratios are all below 3.5dB. The comparison between measured results and simulated results is also discussed.