# US 9,520,655 B2 · Dual-polarized radiating patch antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 9,520,655 B2 - Document ID: US9520655B2 - Status: Granted - Kind: B2 - Application number: 14/488,432 - Filed: 2014-09-17 - Published: 2016-03-17 - Granted: 2016-12-13 - Earliest claimed: 2014-05-29 - Assignees: University Corporation for Atmospheric Research - Applicants: University Corporation for Atmospheric Research - Inventors: Jorge Luis Salazar Cerreno - Web page: https://patentgrep.com/patent/US9520655B2 ## CPC - H01Q 21/24: Combinations of antenna units polarised in different directions for transmitting or receiving circularly and elliptically polarised waves or waves linearly polarised in any direction {(circularly polarised patch antennas H01Q9/0428; circularly polarised horns H01Q13/0241; cross-polarised horns H01Q13/0258; polarisation converters H01Q15/242; cross-polarised rear feeds H01Q19/136; crossed polarisation dual antenna H01Q25/001)} - H01Q 21/065: {Patch antenna array} - H01Q 1/42: Housings not intimately mechanically associated with radiating elements, e.g. radome - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract A dual-polarized patch antenna, an dual-polarized patch antenna array, and a method for forming the same are provided. The dual-polarized patch antenna comprises a radome, a horizontal feed and a vertical feed, a first cross-shaped patch, and a ground plane including a cross aperture. The dual-polarized patch antenna may include a cross patch and a cross aperture to increase the isolation in a cross-polarization between a horizontal polarized signal and a vertical polarized signal in a first principle plane and to decrease a mismatch in co-polarizations between the horizontal polarized signal and the vertical polarized signal in a second principle plane. ## Claims ### Claim 1 A dual-polarized patch antenna (100), comprising: a radome; a horizontal feed and a vertical feed disposed below the radome; a first cross-shaped patch disposed below the radome and above the horizontal and vertical feeds; and a ground plane including a cross aperture disposed below the first cross-shaped patch and above the horizontal and vertical feeds, wherein the ground plane includes four corners and four capacitive and inductive loading corners, each of the four capacitive and inductive loading corners positioned proximate to a respective corner of the four corners. ### Claim 2 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the cross aperture is formed to increase an isolation between a horizontal polarized signal and a vertical polarized signal in a principle plane below −32 dB, and to provide a match between a co-polar beam pattern of the horizontal polarized signal and a co-polar beam pattern of the horizontal polarized signal below 7%. ### Claim 3 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the first cross-shaped patch is formed to increase an isolation between a horizontal polarized signal and a vertical polarized signal in a principle plane below −32 dB, and to provide a match between a co-polar beam pattern of the horizontal polarized signal and a co-polar beam pattern of the horizontal polarized signal below 7%. ### Claim 4 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the cross aperture is a cross with dog-bone bisecting segments. ### Claim 5 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the horizontal and vertical feeds are power divider feeds. ### Claim 6 (depends on 1) The dual-polarized patch antenna of claim 1, further including a second cross-shaped patch. ### Claim 7 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the second cross-shaped patch is larger than the first cross-shaped patch. ### Claim 8 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the horizontal feed is coupled to a first SMA connector and the vertical feed is coupled to a second SMA connector. ### Claim 9 (depends on 1) The dual-polarized patch antenna of claim 1, wherein the horizontal feed is fed a signal from a first network and the vertical feed is fed a signal from a second network, the first network being independent of the second network. ### Claim 10 A dual-polarized patch antenna array (100), comprising an array of dual-polarized patch antenna elements, each respective dual polarized patch antenna including: a radome; a horizontal feed and a vertical feed disposed below the radome; a cross-shaped patch disposed below the radome and above the horizontal and vertical feeds; and a ground plane including a cross aperture disposed below the first cross-shaped patch and above the horizontal and vertical feeds, wherein the ground plane includes four corners and four capacitive and inductive loading corners, each of the four capacitive and inductive loading corners positioned proximate to a respective corner of the four corners. ### Claim 11 (depends on 10) The dual-polarized patch antenna array of claim 10, wherein the cross aperture for each respective dual-polarized patch antenna element is formed to increase an isolation between a horizontal polarized signal and a vertical polarized signal in a principle plane below −32 dB, and to provide a match between a co-polar beam pattern of the horizontal polarized signal and a co-polar beam pattern of the horizontal polarized signal below 7%. ### Claim 12 (depends on 10) The dual-polarized patch antenna array of claim 10, wherein the first cross-shaped patch for each respective dual-polarized patch antenna element is formed to increase an isolation between a horizontal polarized signal and a vertical polarized signal in a principle plane below −32 dB, and to provide a match between a co-polar beam pattern of the horizontal polarized signal and a co-polar beam pattern of the horizontal polarized signal below 7%. ### Claim 13 (depends on 10) The dual-polarized patch antenna array of claim 10, wherein the ground plane including a cross aperture for each respective dual-polarized patch antenna element is formed from a single ground plane conductive surface. ### Claim 14 (depends on 10) The dual-polarized patch antenna array of claim 10, further comprising: a border formed around the dual-polarized patch antenna array, the border having a border width, wherein the border width is formed to match a phase of a dual-polarized patch antenna element to a phase of an outside edge of the border. ### Claim 15 (depends on 10) The dual-polarized patch antenna array of claim 10, wherein the dual-polarized patch antenna array is a square array. ### Claim 16 A method of forming a dual-polarized patch antenna array including a radome, a horizontal feed, a vertical feed, a cross-shaped patch, and a ground plane including a cross aperture, the method comprising steps of: forming the ground plane including a cross aperture, wherein the ground plane includes four corners and four capacitive and inductive loading corners, each of the four capacitive and inductive loading corners positioned proximate to a respective corner of the four corners; forming the cross-shaped patch; and assembling the radome, the horizontal feed below the ground plane, the vertical feed below the ground plane, the cross-shaped patch below the radome and above the ground plane, and the ground plane above the cross-shaped patch and below the radome. ### Claim 17 (depends on 16) The method of claim 16, wherein at least one of the cross aperture and the cross patch is formed to increase an isolation between a horizontal polarized signal and a vertical polarized signal in a principle plane below −32 dB, and to provide a match between a co-polar beam pattern of the horizontal polarized signal and a co-polar beam pattern of the horizontal polarized signal below 7%. ### Claim 18 (depends on 16) The method of claim 16, wherein the horizontal feed is fed a signal from a first network and the vertical feed is fed a signal from a second network, the first network being independent of the second network.