Antenna structure

Abstract

An antenna structure includes: a loop radiator, a first radiator, a second radiator, a third radiator, and a carrier element. The loop radiator has a first end and a second end adjacent to each other, wherein a feed point is located at the first end, and the second end is coupled to ground potential. The first radiator is coupled to a first connection point on the loop radiator. The second radiator is coupled to a second connection point on the loop radiator. The third radiator is coupled to a third connection point on the loop radiator. The loop radiator, the first radiator, the second radiator, and the third radiator are all disposed on the carrier element. The loop radiator surrounds a slot region, wherein the first and second radiators are both disposed within the slot region, and the third radiator is disposed outside the slot region.

Claims

1. An antenna structure, comprising: A loop radiating section has a first end and a second end adjacent to each other, wherein a feed point is located at the first end and the second end is coupled to a ground potential; a first radiating section is coupled to a first connection point on the loop radiating section; a second radiating section is coupled to a second connection point on the loop radiating section; a third radiating section is coupled to a third connection point on the loop radiating section; and a carrier element, wherein the loop radiating section, the first radiating section, the second radiating section, and the third radiating section are all disposed on the carrier element; wherein the loop radiating section surrounds a slot region, the first radiating section and the second radiating section are both disposed within the slot region, and the third radiating section is disposed outside the slot region.

2. The antenna structure as described in claim 1, wherein the loop radiating portion includes a portion of unequal width, and the portion of unequal width is adjacent to the feed point.

3. The antenna structure as described in claim 1, wherein the first radiating portion includes a first segment, a second segment, a third segment, and a fourth segment, the first segment and the second segment having a first included angle, the second segment and the third segment having a second included angle, and the third segment and the fourth segment having a third included angle.

4. The antenna structure as described in claim 3, wherein the second radiating portion includes a fifth segment and a sixth segment, and the fifth segment and the sixth segment have a fourth included angle.

5. The antenna structure as described in claim 4, wherein a first coupling gap is formed between the loop radiating portion and the fourth segment, and a second coupling gap is formed between the loop radiating portion and the sixth segment.

6. The antenna structure as claimed in claim 1, wherein the antenna structure covers a first frequency band, a second frequency band, and a third frequency band, the first frequency band being between 617 MHz and 960 MHz, the second frequency band being between 1710 MHz and 2200 MHz, and the third frequency band being between 2500 MHz and 2690 MHz.

7. The antenna structure as described in claim 6, wherein the length of the loop radiating section is approximately equal to 0.5 times the wavelength of the first frequency band.

8. The antenna structure as described in claim 6, wherein the length of the first radiating part is between 0.125 times and 0.25 times the wavelength of the second frequency band.

9. The antenna structure as described in claim 6, wherein the length of the second radiating part is between 0.125 times and 0.25 times the wavelength of the third frequency band.

10. The antenna structure as described in claim 6, wherein the length of the third radiating part is between 0.125 times and 0.25 times the wavelength of the second frequency band.

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