Antenna structure and electronic device
An antenna structure is disposed on a heat sink. The heat sink includes a plurality of cooling fins. The antenna structure includes a feeding source, a connecting member connected to the feeding source, and an antenna unit. The feeding source is located between two of the adjacent cooling fins. The antenna unit includes a radiation portion connected to the connecting member, a first segment, a second segment, and a third segment. The first segment and the second segment are connected to the radiation portion. The second segment is arranged in alignment with the first segment and a distance apart from the cooling fins. The third segment is connected to the feeding source and overlaps with at least one of the cooling fins.
1 . An antenna structure to be disposed on a heat sink having a plurality of cooling fins, the antenna structure comprising:
a feeding source located between two adjacent ones of the plurality of cooling fins;
a connecting member connected to the feeding source; and
an antenna unit comprising:
a radiation portion connected to the connecting member;
a first segment connected to the radiation portion;
a second segment connected to the radiation portion, wherein the second segment is arranged in alignment with the first segment and a distance apart from the plurality of fins; and
a third segment connected to the feeding source and overlapping with at least one of the plurality of cooling fins.
2 . The antenna structure according to claim 1 , wherein a first resonance frequency band of the antenna structure is lower than a second resonance frequency band of the antenna structure, and a length of the first segment corresponds to one half of a wavelength of the first resonance frequency band.
3 . The antenna structure according to claim 2 , wherein a length of the second segment corresponds to one quarter of a wavelength of the second resonance frequency band.
4 . The antenna structure according to claim 2 , wherein the distance is greater than or equal to 3 mm.
5 . The antenna structure according to claim 2 , wherein the third segment is connected to a grounding layer.
6 . The antenna structure according to claim 1 , wherein one end of the first segment is connected to the radiation portion, and the antenna unit further comprises:
a fourth segment connected to another end of the first segment and overlapping with the heat sink.
7 . The antenna structure according to claim 6 , wherein a first resonance frequency band of the antenna structure is lower than a second resonance frequency band of the antenna structure, and a sum of a length of the first segment and a length of the fourth segment corresponds to one quarter of a wavelength of the first resonance frequency band.
8 . The antenna structure according to claim 6 , wherein the distance is greater than or equal to 1 mm.
9 . The antenna structure according to claim 7 , wherein the first resonance frequency band is between 2.3 GHz and 2.6 GHz, and the second resonance frequency band is between 5 GHz, and 7.125 GHz.
10 . The antenna structure according to claim 1 , wherein the connecting member is a thimble.
11 . An electronic device comprising:
a housing comprising:
a first body part; and
a second body part opposite the first body part;
a heat sink disposed on the first body part and comprising a plurality of cooling fins; and
an antenna structure comprising:
a feeding source located between two adjacent ones of the plurality of cooling fins;
a connecting member connected to the feeding source; and
an antenna unit comprising:
a radiation portion connected to the connecting member;
a first segment disposed on the second body part and connected to the radiation portion;
a second segment disposed on the second body part and connected to the radiation portion, wherein the second segment is arranged in alignment with the first segment and a distance apart from the plurality of cooling fins; and
a third segment connected to the feeding source and overlapping with at least one of the plurality of cooling fins.
12 . The electronic device according to claim 11 , wherein a first resonance frequency band of the antenna structure is lower than a second resonance frequency band of the antenna structure, and a length of the first segment corresponds to one half of a wavelength of the first resonance frequency band.
13 . The electronic device according to claim 12 , wherein a length of the second segment corresponds to one quarter of a wavelength of the second resonance frequency band.
14 . The electronic device according to claim 12 , wherein the distance is greater than or equal to 3 mm.
15 . The electronic device according to claim 12 , wherein the third segment is connected to a grounding layer, and the grounding layer is disposed on the heat sink.
16 . The electronic device according to claim 12 , wherein one end of the first segment is connected to the radiation portion, and the antenna unit further comprises:
a fourth segment connected to another end of the first segment and overlapping with the heat sink.
17 . The electronic device according to claim 16 , wherein a first resonance frequency band of the antenna structure is lower than a second resonance frequency band of the antenna structure, and a sum of a length of the first segment and a length of the fourth segment corresponds to one quarter of a wavelength of the first resonance frequency band.
18 . The electronic device according to claim 16 , wherein the distance is greater than or equal to 1 mm.
19 . The electronic device according to claim 12 , wherein the first resonance frequency band is between 2.3 GHz and 2.6 GHz, and the second resonance frequency band is between 5 GHz and 7.125 GHz.
20 . The electronic device according to claim 11 , wherein the connecting member is a thimble.