Antenna having asymmetric T shape coupled feed

An electronic device having a broadband antenna and capable of wireless transmissions comprising:

• a wireless signal module;
• and
• an antenna electrically connected to the wireless signal module, the antenna comprising:
• an excitation element configured for coupling to an antenna feed carrying an excitation signal produced by a signal source;
• and
• a parasitic element including a ground connection and a parasitic element length,
• wherein the excitation element includes:
• a feed line with a first distal end and a second distal end separated by a feed line length;
• a first arm including a first arm length, wherein the first arm length extends from the second distal end in a first direction from the feed line;
• and
• a second arm including a second arm length, wherein the second arm length extends from the second distal end in a second direction from the feed line;
• and
• wherein the parasitic element length is at least partially coextensive with the excitation element such that a first gap including a first gap separation distance is formed between the parasitic element and the first arm and a second gap including a second gap separation distance is formed between the parasitic element and the second arm, and
• wherein the first arm length is less than the second arm length and the ground connection of the parasitic element is located closer to the first arm than the second arm.

A broadband antenna, comprising:

• an excitation element configured for coupling to an antenna feed carrying an excitation signal produced by a signal source;
• and
• a parasitic element including a parasitic element length,
• wherein the excitation element includes:
• a feed line with a first distal end and a second distal end separated by an excitation element length;
• a first arm including a first arm length, wherein the first arm length extends from the second distal end in a first direction from the excitation element length;
• a second arm including a first end and a second end with a second arm length spanning the distance between the first end and the second end, the first end of the second arm is attached to the second distal end of the excitation element, wherein the second arm length extends from the second distal end in a second direction from the excitation element length;
• and
• a second arm extension connected to the second end of the second arm, wherein the second arm extension includes a second arm extension length that extends perpendicular to the second arm length, and
• wherein the parasitic element length is at least partially coextensive with the excitation element, and
• wherein the first direction is opposite the second direction.