Colinear antenna apparatus

摘要: A colinear antenna array having three half wave dipoles equally spaced and driven by currents which are equal in magnitude phase properly polarized for a element broadside array. The in-phase achieved connecting the outboard to common feed point through 360 electrical degree lengths of coaxial cable. length cables pass interior tubing forms dipole arms. balun transformer changes input impedance elements match characteristic readily available cables. predetermined separation between determines angular central maximum first null radiation pattern transmitted