Phasing element and variable depointing antenna including at least one such element

An antenna having a radiation pattern exhibiting at least a main lobe axis defining a downtilt angle with respect to the earth's surface, said antenna (9) including an elongated support (15) having a longitudinal main axis, a front face (16) and a rear face (17), at least two radiating elements (18) placed along the front face of the support (15) and at least one lobe formation circuit (19) arranged on the support (15) and including phase adjustment means (20) to modify downtilt angle,

• characterised in that said phase adjustment means (20) include at least one phasing element (1) comprising:
• an input transmission line (2) and an output transmission line (3), said transmission lines (2, 3) being printed lines and being placed in order not to be coupled radioelectricallY to one another, at the surface of a main printed circuit (4),
• a mobile radioelectric coupling means (5) input (2) and output (3) transmission lines, said coupling means comprising a first (6) and a second arm (7),
• the electric path showing a variation range between a first position where the first and second arm (6, 7) cover respectively and entirely the input and output transmission lines (2, 3) thereby defining a minimal electric path, and a second position where the first and second arm (6, 7) are respectively placed in the alignment of the input and output transmission lines (2, 3) thereby defining a maximal electric path, wherein
• the phasing element (1) comprises an insulator (8) placed between each of said transmission lines (2, 3) and the arm (6, 7) corresponding to the mobile radioelectric coupling means (5)
• the mobile radioelectric coupling means (5) comprises a substrate having a surface whereon are placed the first and second arm (6, 7), said surface of the substrate comprising the first and second arm (6, 7) being placed opposite the surface of the main printed circuit (4),
• the input and output transmission lines (2, 3) are parallel and the mobile radioelectric coupling means (5) comprises a substantially U-shaped coupling circuit, and
• the mobile radioelectric coupling means (5) is arranged on a plate of a phasing carriage (35).

An antenna having a radiation pattern exhibiting at least a main lobe axis defining a downtilt angle with respect to the earth's surface, said antenna (9) comprising:

• an elongated support (15) having a longitudinal main axis, a front face (16) and a rear face (17),
• at least two radiating elements (18) placed along the front face of the support (15), and
• at least one lobe formation circuit (19) arranged on the support (15) and including phase adjustment means (20) to modify downtilt angle, wherein,
• said phase adjustment means (20) include at least one phasing element comprising
• an input transmission line (2) and an output transmission line (3), said transmission lines (2, 3) being printed lines and being placed in order not to be coupled radioelectrically to one another, at the surface of a main printed circuit (4),
• a mobile radioelectric coupling means (5) input (2) and output (3) transmission lines, said coupling means comprising a first (6) and a second arm (7), and
• the electric path showing a variation range between a first position where the first and second arm (6, 7) cover respectively and entirely the input and output transmission lines (2, 3) thereby defining a minimal electric path, and a second position where the first and second arm (6, 7) are respectively placed in the alignment of the input and output transmission lines (2, 3) thereby defining a maximal electric path.