Multi-frequency band antenna device for radio communication terminal
First Claim
1. A multi-band radio antenna device for a radio communication terminal, comprising:
- a first radiating element;
a second radiating element; and
an integral feed and ground structure electrically connected to the first radiating antenna element and the 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, anda second branch tuned to radiate in a second frequency band at second frequencies approximately equal to or greater than two times the first frequencies, andsaid second radiating antenna element comprising a second continuous trace of conductive material, the second continuous trace comprising a third branch capacitively coupled to said second branch, wherein said third branch is not capacitively coupled to said first branch.
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Accused Products
Abstract
A multi-band radio antenna device for a radio communication terminal includes an integral feed and ground structure electrically connected to a first radiating antenna element and a second radiating antenna element. The first radiating antenna element includes a first continuous trace of conductive material, wherein the first continuous trace has a first branch tuned to radiate at first frequencies in a first frequency band, and a second branch, which is tuned to radiate in a second frequency band at second frequencies approximately equal to or greater than two times the first frequencies. The said second radiating antenna element has a second continuous trace of conductive material, wherein the second continuous trace has a third branch capacitively coupled to the second branch. Such an antenna device is suitable for built-in antennas, at the same time having a wide high-frequency band bandwidth, which enables the antenna to be operable at a number of frequency bands.
198 Citations
20 Claims
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1. A multi-band radio antenna device for a radio communication terminal, comprising:
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a first radiating element; a second radiating element; and an integral feed and ground structure electrically connected to the first radiating antenna element and the 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 comprising a third branch capacitively coupled to said second branch, wherein said third branch is not capacitively coupled to said first branch. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A radio communication terminal for multi-band radio communication, comprising:
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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. - View Dependent Claims (19)
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20. In a radio communication terminal including a multi-band radio antenna device comprising:
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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.
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Specification