# US 10,120,065 B2 · Antenna array > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,120,065 B2 - Document ID: US10120065B2 - Status: Granted - Kind: B2 - Application number: 14/947,983 - Filed: 2015-11-20 - Published: 2017-01-19 - Granted: 2018-11-06 - Earliest claimed: 2015-07-17 - Assignees: Wistron Corporation - Applicants: Wistron Corp. - Inventors: Chen Yu Chou - Web page: https://patentgrep.com/patent/US10120065B2 ## CPC - G01S 7/42: Diversity systems specially adapted for radar - G01S 7/03: Details of HF subsystems specially adapted therefor, e.g. common to transmitter and receiver - G01S 13/56: for presence detection {(presence detection using near field arrangements G01V3/00, e.g. G01V3/08, G01V3/12; burglar, theft or intruder alarms with electrical actuation G08B13/22 - G08B13/26)} - H01Q 9/285: {Planar dipole (H01Q9/065 takes precedence; patch antenna H01Q9/0407)} - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna array is provided for monitoring an object. The antenna array includes an emitting antenna module, a first receiving antenna module, a second receiving antenna module and a third receiving antenna module. The emitting antenna module emits a detecting signal, wherein the detecting signal contacts the object, and is reflected by the object as a return signal. The first receiving antenna module receives the return signal. The second receiving antenna module receives the return signal. The third receiving antenna module receives the return signal, wherein any one of the antenna modules has a phase difference of 90 degrees with the nearest neighboring antenna module. ## Claims ### Claim 1 An antenna array, for monitoring an object, comprising: an emitting antenna module, emitting a detecting signal, wherein the detecting signal contacts the object, and is reflected by the object as a return signal; a first receiving antenna module, to receive the return signal; a second receiving antenna module, to receive the return signal; and a third receiving antenna module, to receive the return signal, wherein a structural difference between each of the antenna module and the nearest neighboring antenna module is arranged orthogonally. ### Claim 2 (depends on 1) The antenna array as claimed in claim 1, wherein a distance is formed between each of the antenna modules and the nearest neighboring antenna module, and the distance is greater than a wavelength of the detecting signal. ### Claim 3 (depends on 2) The antenna array as claimed in claim 2, wherein the first receiving antenna module, the second receiving antenna module and the third receiving antenna module are arranged in a triangle. ### Claim 4 (depends on 3) The antenna array as claimed in claim 3, wherein the emitting antenna module is located between the first receiving antenna module and the second receiving antenna module. ### Claim 5 (depends on 1) The antenna array as claimed in claim 1, wherein the emitting antenna module, the first receiving antenna module, the second receiving antenna module and the third receiving antenna module are the antenna modules of the same structure. ### Claim 6 (depends on 5) The antenna array as claimed in claim 5, wherein the emitting antenna module comprises a substrate, a ground element, a feed point, a first radiator and a second radiator; a first slot and a second slot are formed on the ground element, at least a portion of the first radiator extends into the first slot, at least a portion of the second radiator extends into the second slot, and the feed point couples the first radiator with the second radiator. ### Claim 7 (depends on 6) The antenna array as claimed in claim 6, wherein the first radiator and the second radiator are fishbone shaped. ### Claim 8 (depends on 7) The antenna array as claimed in claim 7, wherein the shape of the first radiator differs from the shape of the second radiator. ### Claim 9 (depends on 8) The antenna array as claimed in claim 8, wherein the shape of the first slot differs from the shape of the second slot. ### Claim 10 (depends on 9) The antenna array as claimed in claim 9, wherein the first radiator comprises a first extending portion, a first branch, a second branch and a third branch, wherein the first branch, the second branch and the third branch are parallel to each other, an end of the first extending portion is connected to the feed point, the other end of the first extending portion is connected to the first branch, and the second branch and the third branch are located between the feed point and the first branch and are connected to the first extending portion. ### Claim 11 (depends on 10) The antenna array as claimed in claim 10, wherein the first branch is located outside of the first slot, and the second branch and the third branch are located in the first slot. ### Claim 12 (depends on 11) The antenna array as claimed in claim 11, wherein the second radiator comprises a second extending portion, a fourth branch, a fifth branch, a sixth branch and a seventh branch, wherein the fourth branch, the fifth branch, the sixth branch and the seventh branch are parallel to each other, an end of the second extending portion is connected to the feed point, the other end of the second extending portion is connected to the seventh branch, and the fourth branch, the fifth branch and the sixth branch are located between the feed point and the seventh branch and are connected to the second extending portion. ### Claim 13 (depends on 12) The antenna array as claimed in claim 12, wherein the seventh branch is located outside of the second slot, and the fourth branch, the fifth branch and the sixth branch are located in the second slot. ### Claim 14 (depends on 13) The antenna array as claimed in claim 13, wherein an extending direction of the first extending portion is opposite to an extending direction of the second extending portion. ### Claim 15 (depends on 14) The antenna array as claimed in claim 14, wherein a width of the first branch is greater than a width of the seventh branch. ### Claim 16 (depends on 15) The antenna array as claimed in claim 15, wherein a length of the fifth branch is greater than a length of the fourth branch, and the length of the fifth branch is greater than a length of the sixth branch.