Multi-frequency band antenna device for radio communication terminal

A radio communication terminal for multi-band radio communication, comprising:

• an integral feed and ground structure electrically connected to a first radiating antenna element and a second radiating antenna element,
• said first radiating antenna element comprising a first continuous trace of conductive material, the first continuous trace comprising:
• a first branch tuned to radiate at first frequencies in a first frequency band, and
• a second branch tuned to radiate in a second frequency band at second frequencies approximately equal to or greater than two times the first frequencies;
• and
• said second radiating antenna element comprising a second continuous trace of conductive material, the second continuous trace having a third branch capacitively coupled to said second branch and not capacitively coupled to said first branch.

In a radio communication terminal including a multi-band radio antenna device comprising:

• an integral feed and ground structure electrically connected to a first radiating antenna element and a second radiating antenna element,
• said first radiating antenna element comprising a first continuous trace of conductive material, the first continuous trace comprising:
• a first branch tuned to radiate at first frequencies in a first frequency band, and
• a second branch, tuned to radiate in a second frequency band at second frequencies approximately equal to or greater than two times the first frequencies;
• and
• said second radiating antenna element comprising a second continuous trace of conductive material, the second continuous trace having a third branch;
• a method of tuning said second frequency band, said method comprising:
• capacitively coupling said third branch to said second branch through a common dielectric carrier element;
• and
• arranging said third branch to not be capacitively coupled to said first branch.