Plane super wide band coupling antenna

A plane super wide band coupling antenna comprising:

• an isolating substrate (10) for installing with a metal thin film layer by printing;
• a first radiating portion (20) being a metal thin film layer printed upon the isolating substrate (10);
• the first radiating portion (10) having an approximate L shape formed by two approximate rectangular sheets which are approximately vertical to one another;
• one side of one of the rectangular sheet of the first radiating portion (20) being formed as a coupling section (21);
• the coupling section (21) being energy-coupled to a second radiating portion (30);
• the first radiating portion (20) being extended with a feeding point (22) which is electrically connected to a signal feeding wire (50);
• the second radiating portion (30) being a metal thin film layer printed upon the isolating substrate (10);
• extending from a ground portion (40) on the isolating substrate (10) and having an approximate L shape, one first section of the L shape being an approximate rectangular shape;
• the first section of the second radiating portion (30) being formed as a free end;
• gaps between the two sheets of the first radiating portion (20) and two sides of the free end (31) of the second radiating portion (30) being formed as an L shape space;
• the gaps being formed as the coupling section between the first and second radiating portions for electric isolation so as to have an optimum frequency response for energy induction;
• the ground portion (40) being formed by a metal thin film layer which is an electric conductor;
• one end thereof being electrically connected to the second radiating portion;
• the ground portion having the same potential as an grounding end of a main signal wire;
• the signal feeding wire (50) being a coaxial cable;
• the main signal wire (51) of the signal feeding wire (50) being electrically connected to the feeding point of the first radiating portion;
• a grounding wire (52) of the signal feeding wire being electrically connected to the ground portion for transferring signals to a signal receiving/transmitting circuit.