Array antenna

An array antenna comprising:

• a dielectric substrate defining a lengthwise direction thereof and a surface thereof;
• first and a second radiating elements having a similar shape and spaced from each other on the surface and extending along said lengthwise direction, a first connecting portion connected between said first and said second radiating elements;
• a feeding point disposed on the first connecting portion;
• a coaxial cable having an inner conductor coupled to the feeding point, wherein
• an outline of said substrate defines at least one cutout to comply with a configuration of said first radiating element.

An array antenna comprising:

• at least three bottom, middle and top levels,
• said bottom level including a plurality of radiating elements side by side arranged with one another, said radiating elements being arranged with at least two groups having the same number of radiating elements thereof;
• said middle level including a plurality of connecting portions side by side arranged with one another to respectively connect the corresponding radiating elements in the same group;
• and
• said top level including a feeding network line electrically connected to the connecting portions, wherein
• a feeder cable is mechanically and electrically connected to said feeding network line.