# US 8,786,512 B2 · Dual-polarized antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 8,786,512 B2 - Document ID: US8786512B2 - Status: Granted - Kind: B2 - Application number: 13/357,480 - Filed: 2012-01-24 - Published: 2013-05-16 - Granted: 2014-07-22 - Earliest claimed: 2011-11-11 - Assignees: Cipherlab Co., Ltd. - Applicants: Fu-Jen Shih; Kuo-Pin Hsu; Yi-Teng Hsiao - Inventors: Fu-Jen Shih; Kuo-Pin Hsu; Yi-Teng Hsiao - Web page: https://patentgrep.com/patent/US8786512B2 ## CPC - H01Q 1/243: {with built-in antennas} - H01Q 5/371: Branching current paths - H01Q 9/0421: {with a shorting wall or a shorting pin at one end of the element (H01Q9/0414 takes precedence)} - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q 21/30: Combinations of separate antenna units operating in different wavebands and connected to a common feeder system - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A dual-polarized antenna includes a ground plane, an inverted-F conductor unit with an inverted-F plane, an inverted-L conductor unit with an inverted-L plane and a stretched ground conductor unit with a T-shaped plane. The inverted-F plane is vertically connected to the inverted-L plane, the T-shaped plane and the ground plane respectively, and the T-shaped plane is vertically connected with the ground plane. Therefore, the inverted-F plane, the inverted-L plane and the stretched ground conductor unit correspond to each side of the ground plane respectively to form a dual-polarized radiation field. ## Claims ### Claim 1 A dual-polarized antenna, comprising: a ground plane; an inverted-F conductor unit disposed on the ground plane, comprising: a first stretched conductor section, a first end of the first stretched conductor section being extended from the ground plane; a signal-feeding conductor section, a side of the signal-feeding conductor section perpendicular to the ground plane being parallel to a side of first stretched conductor section perpendicular to the ground plane, and a first end of the signal-feeding conductor section being connected with the ground plane through a signal-feeding cable; and a first arm conductor section, a first end of a first side of the first arm conductor section being connected with a second end of the first stretched conductor section and a second end of the signal-feeding conductor section to form an inverted-F plane; and an inverted-L conductor unit being connected with the inverted-F conductor unit, and a surface of the inverted-L conductor unit, the inverted-F plane of the inverted-F conductor unit and a surface of the ground plane being perpendicular to each other. ### Claim 2 (depends on 1) The dual-polarized antenna as claimed in claim 1, wherein a surface of the first stretched conductor section, a surface of the signal-feeding conductor section and a surface of the first arm conductor section are combined to form the inverted-F plane of the inverted-F conductor unit. ### Claim 3 (depends on 1) The dual-polarized antenna as claimed in claim 1, wherein the ground plane is a radiation guiding plane, a radiation direction of the dual-polarized antenna is perpendicular to the surface of the ground plane. ### Claim 4 (depends on 1) The dual-polarized antenna as claimed in claim 1, wherein the inverted-L conductor unit comprises: a second stretched conductor section, a first end of the second stretched conductor section is extended from a second side of the first arm conductor section; and a branch arm conductor section, a first end of the branch arm conductor section is connected to a second end of the second stretched conductor section. ### Claim 5 (depends on 4) The dual-polarized antenna as claimed in claim 4, wherein a surface of the second stretched conductor section and a surface of the branch arm conductor section are combined to form the surface of the inverted-L conductor unit. ### Claim 6 (depends on 4) The dual-polarized antenna as claimed in claim 4, wherein a total length of the first stretched conductor section, the first arm conductor section, the second stretched conductor section and the branch arm conductor section is a quarter of an operating wavelength of the dual-polarized antenna. ### Claim 7 (depends on 4) The dual-polarized antenna as claimed in claim 4, wherein the second side of the first arm conductor section connected to the inverted-L conductor unit is adjacent to and perpendicular to the first side of the first arm conductor section connected to the signal-feeding conductor section and the first stretched conductor section. ### Claim 8 (depends on 4) The dual-polarized antenna as claimed in claim 4, wherein the inverted-F plane of the inverted-F conductor unit and the surface of the inverted-L conductor unit correspond to two adjacent sides of the ground plane respectively. ### Claim 9 (depends on 1) The dual-polarized antenna as claimed in claim 1, wherein a radiation intensity of the dual-polarized antenna increases gradually from the first stretched conductor section to the inverted-L conductor unit. ### Claim 10 (depends on 1) The dual-polarized antenna as claimed in claim 1, wherein the ground plane is rectangular. ### Claim 11 (depends on 1) The dual-polarized antenna as claimed in claim 1, further comprising: a stretched ground conductor unit extended vertically from the ground plane, and being connected with the inverted-F plane. ### Claim 12 (depends on 11) The dual-polarized antenna as claimed in claim 11, wherein the stretched ground conductor unit comprises: a third stretched conductor section, a first end of the third stretched conductor section is extended vertically from the ground plane; a second arm conductor section, a first side of the second arm conductor section is connected to a second end of the third stretched conductor section, a second side of the second arm conductor section is connected to the inverted-F plane, and the second arm conductor section and the third stretched conductor section are combined to form a T-shaped plane; and a fourth stretched conductor section extended from a third side of the second arm conductor section. ### Claim 13 (depends on 12) The dual-polarized antenna as claimed in claim 12, wherein a surface of the fourth stretched conductor section is perpendicular to a surface of the second arm conductor section to form an L-shape, and the surface of the fourth stretched conductor section is perpendicular to a surface of the third stretched conductor section. ### Claim 14 (depends on 12) The dual-polarized antenna as claimed in claim 12, wherein the second arm conductor section, the fourth stretched conductor section and the first arm conductor section are disposed above the ground plane at a same height level. ### Claim 15 (depends on 12) The dual-polarized antenna as claimed in claim 12, wherein the surface of the first arm conductor section, the surface of the inverted-L conductor unit, a surface of the second arm conductor section and a surface of the fourth stretched conductor section correspond to each of the sides of the ground plane respectively. ### Claim 16 (depends on 12) The dual-polarized antenna as claimed in claim 12, wherein a radiation intensity of the dual-polarized antenna increases gradually from the first stretched conductor section to the inverted-L conductor unit and the fourth stretched conductor section respectively. ### Claim 17 (depends on 12) The dual-polarized antenna as claimed in claim 12, wherein a total length of the third stretched conductor section, the second arm conductor section, the second stretched conductor section and the fourth stretched conductor section is a quarter of an operating wavelength of the dual-polarized antenna.