# US 2018/0026330 A1 · Antenna unit, antenna system and antenna control method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026330 A1 - Document ID: US20180026330A1 - Status: Published application - Kind: A1 - Application number: 15/600,786 - Filed: 2017-05-21 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Pegatron Corporation - Applicants: Pegatron Corporation - Inventors: Chien-Yi WU; Chao-Hsu WU; Ya-Jyun LI; Shih-Keng HUANG; Yu-Yi CHU - Web page: https://patentgrep.com/patent/US20180026330A1 ## CPC - H01Q 3/242: {Circumferential scanning} - H01Q 5/371: Branching current paths - H01Q 5/378: Combination of fed elements with parasitic elements - H01Q 9/0421: {with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna unit, an antenna system and an antenna control method are disclosed. The antenna unit includes a first radiation metal element, a second radiation metal element, and a third radiation metal element. The first radiation metal element includes a signal feed point, a first ground point, and a second ground point. The signal feed point, the first ground point, and the second ground point are disposed approximately in a straight line. The second radiation metal element is disposed away from the first radiation metal element with a gap and includes a third ground point. The third radiation metal element surrounds the first radiation metal element and the second radiation metal element and includes a fourth ground point. ## Claims ### Claim 1 An antenna unit comprising: a first radiation metal element comprising: a signal feed point; a first ground point; and a second ground point, positions of the signal feed point, the first ground point, and the second ground point being arranged approximately in a straight line; a second radiation metal element disposed away from the first radiation metal element with a gap, the second radiation metal element comprising a third ground point; and a third radiation metal element surrounding the first radiation metal element and the second radiation metal element, the third radiation metal element comprising a fourth ground point. ### Claim 2 (depends on 1) The antenna unit of claim 1, wherein the first radiation metal element further comprises: a first metal part; a second metal part connected to one side of the first metal part; and a third metal part connected to another side of the first metal part opposite to the second metal part; wherein the signal feed point is disposed at the second metal part, the first ground point is disposed at the second metal part or the first metal part adjacent to the second metal part, the second ground point is disposed at the third metal part or the first metal part adjacent to the third metal part, and the second radiation metal element is disposed away from the third metal part with the gap. ### Claim 3 (depends on 1) The antenna unit of claim 1, wherein a shape of the first radiation metal element is mirror-symmetric with respect to the signal feed point, the first ground point, and the second ground point. ### Claim 4 (depends on 1) The antenna unit of claim 1, further comprising: a slot disposed at the first radiation metal element and arranged around the signal feed point with a distance. ### Claim 5 (depends on 1) The antenna unit of claim 1, wherein the third radiation metal element is a closed loop, and the fourth ground point is disposed at one side of the third radiation metal element adjacent to the signal feed point. ### Claim 6 (depends on 1) The antenna unit of claim 1, further comprising: a dielectric support comprising a top surface and a bottom surface, the first radiation metal element, the second radiation metal element, and the third radiation metal element being disposed on the top surface; and a ground plane disposed on the bottom surface of the dielectric support, each of the first ground point, the second ground point, the third ground point, and the fourth ground point being electrically coupled to the ground plane. ### Claim 7 An antenna system comprising: a plurality of antenna units, each of the antenna units having a directional radiation pattern, the antenna units being disposed to surround a center point and each of the directional radiation patterns extending from the center point towards an outside, wherein each of the antenna units comprises: a first radiation metal element comprising: a signal feed point; a first ground point; and a second ground point, positions of the signal feed point, the first ground point, and the second ground point being arranged approximately in a straight line; a second radiation metal element disposed away from the first radiation metal element with a gap, the second radiation metal element comprising a third ground point; and a third radiation metal element surrounding the first radiation metal element and the second radiation metal element, the third radiation metal element comprising a fourth ground point. ### Claim 8 (depends on 7) The antenna system of claim 7, wherein the first radiation metal element further comprises: a first metal part; a second metal part connected to one side of the first metal part; and a third metal part connected to another side of the first metal part opposite to the second metal part; wherein the signal feed point is disposed at the second metal part, the first ground point is disposed at the second metal part or the first metal part adjacent to the second metal part, the second ground point is disposed at the third metal part or the first metal part adjacent to the third metal part, and the second radiation metal element is disposed away from the third metal part with the gap. ### Claim 9 (depends on 7) The antenna system of claim 7, wherein polarization directions of any two adjacent antenna units are orthogonal to each other. ### Claim 10 (depends on 7) The antenna system of claim 7, further comprising: a processing module configured to control an on/off state of each of the antenna units and detect a signal intensity received by or transmitted from the antenna system. ### Claim 11 (depends on 7) The antenna system of claim 7, wherein a shape of the first radiation metal element is mirror-symmetric with respect to the signal feed point, the first ground point, and the second ground point. ### Claim 12 (depends on 7) The antenna system of claim 7, each of the antenna units further comprising: a slot disposed at the first radiation metal element and arranged around the signal feed point with a distance. ### Claim 13 (depends on 7) The antenna system of claim 7, wherein the third radiation metal element is a closed loop, and the fourth ground point is disposed at one side of the third radiation metal element adjacent to the signal feed point. ### Claim 14 (depends on 7) The antenna system of claim 7, each of the antenna units further comprising: a dielectric support comprising a top surface and a bottom surface, the first radiation metal element, the second radiation metal element, and the third radiation metal element being disposed on the top surface; and a ground plane disposed on the bottom surface of the dielectric support, each of the first ground point, the second ground point, the third ground point, and the fourth ground point being electrically coupled to the ground plane. ### Claim 15 An antenna control method for an antenna system, the antenna control method comprising: controlling an on/off state of each of the antenna units to switch among a plurality of antenna unit configurations; detecting a signal intensity of each of the antenna unit configurations; determining one of the antenna unit configurations having an optimized signal intensity; and using the one of the antenna unit configurations to receive or transmit signals. ### Claim 16 (depends on 15) The antenna control method of claim 15, the antenna system comprising: a plurality of antenna units, each of the antenna units having a directional radiation pattern, the antenna units being disposed to surround a center point and each of the directional radiation patterns extending from the center point towards an outside respectively, wherein each of the antenna units comprises: a first radiation metal element comprising: a signal feed point; a first ground point; and a second ground point, positions of the signal feed point, the first ground point, and the second ground point being arranged approximately in a straight line; a second radiation metal element disposed away from the first radiation metal element with a gap, the second radiation metal element comprising a third ground point; and a third radiation metal element surrounding the first radiation metal element and the second radiation metal element, the third radiation metal element comprising a fourth ground point. ### Claim 17 (depends on 16) The antenna control method of claim 16, wherein the first radiation metal element further comprises: a first metal part; a second metal part connected to one side of the first metal part; and a third metal part connected to the first metal part and located on another side opposite to the second metal part; wherein the signal feed point is disposed at the second metal part, the first ground point is disposed at the second metal part or the first metal part adjacent to the second metal part, the second ground point is disposed at the third metal part or the first metal part adjacent to the third metal part, and the second radiation metal element is disposed away from the third metal part with the gap. ### Claim 18 (depends on 16) The antenna control method of claim 16, wherein polarization directions of any two adjacent antenna units of the antenna units are orthogonal to each other. ### Claim 19 (depends on 16) The antenna control method of claim 16, the antenna system further comprising: a processing module configured to control an on/off state of each of the antenna units and detect a signal intensity received by or transmitted from the antenna system.