# US 12,119,572 B2 · Base station antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,119,572 B2 - Document ID: US12119572B2 - Status: Granted - Kind: B2 - Application number: 17/972,025 - Filed: 2022-10-24 - Published: 2023-05-04 - Granted: 2024-10-15 - Earliest claimed: 2021-11-01 - Assignees: Suzhou Luxshare Technology Co., Ltd. - Applicants: Suzhou Luxshare Technology Co., Ltd. - Inventors: WenKai Xu; ChengYu Xu; KangNing Lv; ZhenHua Li; WanQiang Zhang; ZhengGuo Zhou; Gang Zhou - Web page: https://patentgrep.com/patent/US12119572B2 ## CPC - H01Q 9/285: {Planar dipole (H01Q9/065 takes precedence; patch antenna H01Q9/0407)} - H01Q 1/246: {specially adapted for base stations} - H01Q 1/521: {reducing the coupling between adjacent antennas} - H01Q 21/061: {Two dimensional planar arrays} - H01Q 9/065: {Microstrip dipole antennas (patch antenna H01Q9/0407)} - 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: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract Disclosed is a base station antenna, which includes a substrate and an antenna sub-array. The antenna sub-array includes a feeding plate, a plurality of radiation units, and two metal baffles. The feeding plate is disposed on the substrate. The plurality of radiation units are disposed on the feeding plate along a first direction and electrically connected to the feeding plate. The two metal baffles are respectively disposed on two sides of the feeding plate along a second direction perpendicular to the first direction, and each metal baffle extends along the first direction. Each metal baffle is provided with an opening slot, and the length of the opening slot along the first direction corresponds to a wavelength of a center frequency of the base station antenna. Therefore, the base station antenna can achieve the technical effects of converging the horizontal beam width and optimizing the cross polarization ratio. ## Claims ### Claim 1 A base station antenna, comprising: a substrate; and an antenna sub-array, comprising: a feeding plate disposed on the substrate; a plurality of radiation units disposed on the feeding plate along a first direction and electrically connected to the feeding plate; and two metal baffles respectively disposed on two sides of the feeding plate along a second direction perpendicular to the first direction, wherein each of the two metal baffles extends along the first direction, and each of the two metal baffles is provided with an opening slot, and a length of the opening slot of each metal baffle along the first direction corresponds to a wavelength of a center frequency of the base station antenna; wherein the length of the opening slot of each metal baffle along the first direction is 0.8 times the wavelength of the center frequency of the base station antenna. ### Claim 2 (depends on 1) The base station antenna according to claim 1, wherein each of the two metal baffles is provided with a plurality of the opening slots along the first direction, and a distance between two adjacent opening slots is 0.25 times the wavelength of the center frequency of the base station antenna. ### Claim 3 (depends on 1) The base station antenna according to claim 1, wherein the opening slot of each metal baffle is located at a center position of each metal baffle along the first direction. ### Claim 4 (depends on 1) The base station antenna according to claim 1, wherein each of the two metal baffles is provided with a plurality of the opening slots, and the plurality of the opening slots are located symmetrically with respect to a center position of each metal baffle along the first direction. ### Claim 5 (depends on 1) The base station antenna according to claim 1, wherein the feeding plate has a central axis extending along the first direction and located in a middle position between the two sides of the feeding plate along the second direction, the plurality of radiation units are arranged along the central axis, and a distance between the central axis and any one of the two metal baffles along the second direction is 0.5 times the wavelength of the center frequency of the base station antenna. ### Claim 6 (depends on 1) The base station antenna according to claim 1, further comprising an isolation component correspondingly disposed on the antenna sub-array and disposed between two adjacent radiation units and between the two metal baffles. ### Claim 7 (depends on 6) The base station antenna according to claim 6, further comprising two isolation columns disposed between the two adjacent radiation units and between the two metal baffles, wherein the isolation component is connected with the two isolation columns. ### Claim 8 (depends on 7) The base station antenna according to claim 7, wherein each metal baffle comprises a folded edge, each metal baffle is connected to the substrate through the corresponding folded edge, bottom ends of the two isolation columns are connected to the folded edges of the two metal baffles, top ends of the two isolation columns are connected to the isolation component, and the isolation component does not contact the feeding plate. ### Claim 9 (depends on 1) The base station antenna according to claim 1, wherein each radiation unit comprises a balun support part and an antenna oscillator part, the antenna oscillator part of each radiation unit is disposed on and electrically connected to the balun support part of each radiation unit, the balun support part of each radiation unit is disposed on the feeding plate, and the antenna oscillator part and the balun support part of each radiation unit are both composed of printed circuit boards. ### Claim 10 (depends on 9) The base station antenna according to claim 9, wherein the balun supporting part of each radiation unit is provided with a curved balun wiring to reduce a height of each radiation unit. ### Claim 11 (depends on 9) The base station antenna according to claim 9, wherein a distance between the antenna oscillator parts of two adjacent radiation units is 0.8 times the wavelengths of the center frequency of the base station antenna. ### Claim 12 (depends on 9) The base station antenna according to claim 9, wherein the antenna oscillator part of each radiation unit comprises at least a pair of oscillator arms, and a length of each oscillator arm is 0.25 times the wavelength of the center frequency of the base station antenna. ### Claim 13 (depends on 1) The base station antenna according to claim 1, wherein the number of the antenna sub-array is plural, and a distance between two adjacent antenna sub-arrays is 1.5 times the wavelength of the center frequency of the base station antenna. ### Claim 14 (depends on 1) The base station antenna according to claim 1, further comprising a coaxial connector and a coaxial cable, wherein the coaxial connector is connected to the feeding plate through the coaxial cable. ### Claim 15 A base station antenna, comprising: a substrate; and an antenna sub-array, comprising: a feeding plate disposed on the substrate; a plurality of radiation units disposed on the feeding plate along a first direction and electrically connected to the feeding plate; and two metal baffles respectively disposed on two sides of the feeding plate along a second direction perpendicular to the first direction, wherein each of the two metal baffles extends along the first direction, and each of the two metal baffles is provided with an opening slot, and a length of the opening slot of each metal baffle along the first direction corresponds to a wavelength of a center frequency of the base station antenna; wherein each of the two metal baffles is provided with a plurality of the opening slots along the first direction, and a distance between two adjacent opening slots is 0.25 times the wavelength of the center frequency of the base station antenna. ### Claim 16 (depends on 15) The base station antenna according to claim 15, wherein the plurality of the opening slots are located symmetrically with respect to a center position of each metal baffle along the first direction. ### Claim 17 (depends on 15) The base station antenna according to claim 15, wherein the feeding plate has a central axis extending along the first direction and located in a middle position between the two sides of the feeding plate along the second direction, the plurality of radiation units are arranged along the central axis, and a distance between the central axis and any one of the two metal baffles along the second direction is 0.5 times the wavelength of the center frequency of the base station antenna. ### Claim 18 A base station antenna, comprising: a substrate; an antenna sub-array, comprising: a feeding plate disposed on the substrate; a plurality of radiation units disposed on the feeding plate along a first direction and electrically connected to the feeding plate; and two metal baffles respectively disposed on two sides of the feeding plate along a second direction perpendicular to the first direction, wherein each of the two metal baffles extends along the first direction, and each of the two metal baffles is provided with an opening slot, and a length of the opening slot of each metal baffle along the first direction corresponds to a wavelength of a center frequency of the base station antenna; and an isolation component correspondingly disposed on the antenna sub-array and disposed between two adjacent radiation units and between the two metal baffles. ### Claim 19 (depends on 18) The base station antenna according to claim 18, wherein the number of the antenna sub-array is plural, and a distance between two adjacent antenna sub-arrays is 1.5 times the wavelength of the center frequency of the base station antenna.