Ground connecting system for plane and helical microwave antenna structures

Ground connecting system for microwave antenna structures comprising a radiating body that is centrally connected at a tubular pillar member, a conductor (3, 3b) passing through said tubular pillar member to feed the antenna with the power required for operation thereof, the power being supplied by a power supply source (2) located at ground level, a plurality of iron strips (6, 6a, 6b, 16a, 16b) being applied at selected regions of the radiating body of the microwave antenna structure with a scope of creating selected grounded regions and setting up a magnetic field onto the radiating surface of said radiating body of the antenna structure in between said selected grounded regions and non-grounded regions of the radiating surface, such as to result in the current being supplied through the conductor (3, 3b) and received at a non-grounded region to be directly radiated and in the current being received at said selected grounded regions to be reflected towards the adjacent non-grounded area and subsequently radiated, thereby affording effective isolation of the radiating body from the power supply source, wherein in a microwave helical antenna structure (10) said radiating comprising a plurality of dielectric cylinders (11) arranged along the circumference and inwardly the radiating surface, each dielectric cylinder (11) located at the top of a coaxial power supply cable comprising a centrally located power supply conductor (3b) for a dielectric cylinder (11) located at the center of the radiating body and peripheral power supply conductors (3a) for the dielectric cylinders (11) located around the center and along the circumference of the radiating body, each of the dielectric cylinders (11) being helicoidally wound with a conducting wire (12) extending from an upper end at the top of the dielectric cylinder (11) to a bottom end at the bottom thereof, said bottom end being connected to said power supply conductor (3a) or (3b), ground connecting iron strips (16a) and (16b) being connected respectively at the upper and bottom ends of the conducting wires (12) of the dielectric cylinders (11) arranged along the circumference of the radiating body only, whilst no ground connecting strips being applied at the conducting wires (12) of the dielectric cylinder (11) located inwardly, whereby a grounded region is created along the circumference of the radiating body of said microwave helical antenna structure (10).