A feed circuit for connecting adjacent components includes: a printed circuit board having a first portion and an axis of symmetry extending along a longitudinal direction of the first portion, second portions extending in substantially opposite directions from one end of the first portion, and third portions extending in substantially opposite directions from another end of the first portion; at least two circuits electrically connecting respective ones of the second portions with corresponding ones of the third portions; and connection areas at each of the second portions configured to be connected to one of the adjacent components, and at each of the third portions configured to be connected to another one of the adjacent components.