Phase-only synthesis of the radiation pattern of the phased array antenna of a coordinate meter

Abstract

Design versions of the phased array antenna (PAA) of an object coordinate meter are considered. The array antenna forms the sum radiation pattern and two difference patterns ensuring measuring of the object angular coordinates. The problem of the phase-only synthesis of the PAA sum amplitude pattern with a given shape is solved under the condition of keeping the angular orientation of direction-finding nulls of difference patterns in the pattern scanning direction. Design relationships are derived and a pattern synthesis method based on numerical minimization of a nonlinear functional is described. Synthesis examples are presented.