ARRAY ANTENNA, RECEIVER PROVIDED WITH THE ARRAY ANTENNA AND METHOD FOR DECIDING DIRECTIONAL CHARACTERISTIC IN THE ARRAY ANTENNA

摘要

PURPOSE: To reduce the required loads of a receiver for the identification of desired signals by making interference radio waves from a communication satellite present at an adjacent satellite position small or making radio wave interference given to the communication satellite present at the adjacent satellite position small and to make an antenna area small by raising antenna efficiency. ;CONSTITUTION: Plural antenna elements 12 are arrayed in a grid shape. Power is supplied from the receiver 10 to the respective plural antenna elements 12 so as to be equal amplitude and the same phase and a main beam is turned to the communication satellite defined as a target. The number of the antenna elements 12 and a gap (d) between the respective antenna elements 12 are decided so as to let directional characteristics be a null point for the direction of the communication satellite other than the communication satellite defined as the target and the respective antenna elements are arranged corresponding to the decided number of the antenna elements 12 and gap (d) between the respective antenna elements 12.;COPYRIGHT: (C)1995,JPO