INTER-BRANCH CORRECTION DEVICE OF PHASED ARRAY ANTENNA AND INTER-BRANCH CORRECTION METHOD OF PHASED ARRAY ANTENNA

摘要

PROBLEM TO BE SOLVED: To provide an inter-branch correction device of a phased array antenna capable of precisely correcting phase errors in high frequency signals among branches provided corresponding to each antenna included in the phased array antenna without increasing the circuit size.;SOLUTION: The inter-branch correction device of the phased array antenna has plural branches including a modulating section, a delay section, a mixer section and an antenna. The inter-branch correction device further includes: a frequency conversion section that converts the frequency on the basis of two high frequency signals from neighboring branches; a filter section that extracts a DC component on the basis of an output signal from the frequency conversion section; and a delay control section that determines a predetermined phase delay amount in the delay section of a branch on the basis of the DC component extracted by the filter section. The delay control section causes any one of the delay sections of neighboring branches to delay the phase of a transmission signal modulated by any one of the branches equivalent to the determined predetermined delay amount.;COPYRIGHT: (C)2013,JPO&INPIT