A new active phased array antenna for mobile direct broadcasting satellitereception

This paper represents a new active phase array antenna for Ku-band mobile s ervice that will be possible in satellite broadcasting service. The main id ea for the antenna is to use minimum active array element with cost-effecti ve one-dimensional subarrays with inclined pencil beam structure for 34 dBi gain. For this antenna, we also used the squint beam tracking algorithm. T his tracking gives different way to the traditional monopulse tracking meth od in tracking capability. Electronic scanning angle of beam peak in this a ntenna is over +/-12 degrees wide only with 20 phase shifter elements for i ts scan ranges. This antenna with the attractive hybrid-tracking concept ha s about 142 times less array element than antennas with two-dimensional arr ay.