# US 12,113,283 B2 · Radiation apparatus and multi-band array antenna > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,113,283 B2 - Document ID: US12113283B2 - Status: Granted - Kind: B2 - Application number: 17/405,868 - Filed: 2021-08-18 - Published: 2021-12-02 - Granted: 2024-10-08 - Earliest claimed: 2019-02-19 - Assignees: Huawei Technologies Co., Ltd. - Applicants: Huawei Technologies Co., Ltd. - Inventors: Xun Zhang; Jianping Li; Xiaodeng Duan; Wenao Li - Web page: https://patentgrep.com/patent/US12113283B2 ## CPC - H01Q 21/0006: {Particular feeding systems} - H01P 5/10: for coupling balanced lines or devices with unbalanced lines or devices - H01Q 1/12: Supports; Mounting means - H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) - H01Q 5/48: Combinations of two or more dipole type antennas - H01Q 9/065: {Microstrip dipole antennas (patch antenna H01Q9/0407)} - H01Q 19/108: {Combination of a dipole with a plane reflecting surface (H01Q19/106 takes precedence; strip line H01Q9/065)} - H01Q 21/062: {using dipole aerials; (H01Q21/067, H01Q21/068 take precedence)} - 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 21/26: Turnstile or like antennas comprising arrangements of three or more elongated elements disposed radially and symmetrically in a horizontal plane about a common centre - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) - H01P: WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE (operating at optical frequencies G02B) ## Abstract Embodiments of this application provide a radiation apparatus and a multi-band array antenna, and relate to the field of antenna technologies. The radiation apparatus includes a radiation module, a first conductor balun, and a second conductor balun. The first conductor balun is mechanically connected to the second conductor balun under the radiation module. The radiation module includes a first radiation unit and a second radiation unit in a +45° polarization direction, and a third radiation unit and a fourth radiation unit in a −45° polarization direction. The first conductor balun is configured to feed a first differential signal to the first radiation unit and the second radiation unit. The second conductor balun is configured to feed a second differential signal to the third radiation unit and the fourth radiation unit. The first conductor balun and the second conductor balun are disposed in the same plane. ## Claims ### Claim 1 A radiation apparatus, comprising: a radiation module, a first balun, and a second balun; the radiation module comprises a first radiation unit and a second radiation unit that are arranged in a +45° polarization direction, and a third radiation unit and a fourth radiation unit that are arranged in a −45° polarization direction; and the first balun is configured to feed a first differential signal to the first radiation unit and the second radiation unit, the second balun is configured to feed a second differential signal into the third radiation unit and the fourth radiation unit, and the first balun and the second balun are disposed in a same plane; wherein the first balun and the second balun each comprise a feeding conductor, a first reference ground conductor, a second reference ground conductor, and a fastener, wherein the fastener is configured to fasten relative positions of the feeding conductor, the first reference ground conductor and the second reference ground conductor; the feeding conductor comprises a first feeding conductor segment and a second feeding conductor segment that extend in a first direction, the first feeding conductor segment and the second feeding conductor segment are arranged in parallel, a lower end of the first feeding conductor segment is a signal input end, and an upper end of the second feeding conductor segment is electrically connected to an upper end of the first feeding conductor segment; the first reference ground conductor is parallel to the first feeding conductor segment, a capacitive coupling effect can be generated between the first reference ground conductor and the first feeding conductor segment, a lower end of the first reference ground conductor is a reference ground connection end, and an upper end of the first reference ground conductor is a first signal output end; the second reference ground conductor is parallel to the second feeding conductor segment, a capacitive coupling effect can be generated between the second reference ground conductor and the second feeding conductor segment, a lower end of the second reference ground conductor is a reference ground connection end, and an upper end of the second reference ground conductor is a second signal output end; and the first signal output end and the second signal output end of the first balun are respectively electrically connected to the first radiation unit and the second radiation unit, and the first signal output end and the second signal output end of the second balun are respectively electrically connected to the third radiation unit and the fourth radiation unit. ### Claim 2 (depends on 1) The radiation apparatus according to claim 1, wherein the feeding conductor further comprises a third feeding conductor segment, the third feeding conductor segment extends in a second direction perpendicular to the first direction, one end of the third feeding conductor segment is electrically connected to the upper end of the first feeding conductor segment, and another end of the third feeding conductor segment is electrically connected to the upper end of the second feeding conductor segment. ### Claim 3 (depends on 1) The radiation apparatus according to claim 1, wherein the first feeding conductor segment and the second feeding conductor segment are located in a first plane, the first reference ground conductor and the second reference ground conductor are located in a second plane, and the first plane is parallel to and opposite to the second plane. ### Claim 4 (depends on 3) The radiation apparatus according to claim 3, wherein the fastener is a first insulating substrate that is disposed in the first direction, the feeding conductor, the first reference ground conductor, and the second reference ground conductor are metal layers disposed on the first insulating substrate. ### Claim 5 (depends on 3) The radiation apparatus according to claim 3, wherein the fastener comprises a fastener substrate, a first slot, a second slot, and a third slot are disposed on the fastener substrate, the feeding conductor is clamped in the first slot, the first reference ground conductor is clamped in the second slot, and the second reference ground conductor is clamped in the third slot. ### Claim 6 (depends on 1) The radiation apparatus according to claim 1, wherein the feeding conductor, the first reference ground conductor, and the second reference ground conductor are located in the same plane. ### Claim 7 (depends on 1) The radiation apparatus according to claim 1, further comprising a substrate, wherein the substrate is mechanically connected to lower ends of the first balun and the second balun, and the substrate comprises a reference ground, a first feeding terminal, and a second feeding terminal that are isolated from each other; and the reference ground connection end of the first balun and the reference ground connection end of the second balun are both electrically connected to the reference ground, a signal input end of the first balun is electrically connected to the first feeding terminal, and a signal input end of the second balun is electrically connected to the second feeding terminal. ### Claim 8 (depends on 7) The radiation apparatus according to claim 7, wherein the substrate further comprises a second insulating substrate that is disposed along a second direction perpendicular to the first direction, the reference ground is a metal layer disposed on one surface of an upper surface and a lower surface of the second insulating substrate, and the first feeding terminal and the second feeding terminal are metal layers disposed on the other another surface of the upper surface and the lower surface of the second insulating substrate. ### Claim 9 (depends on 7) The radiation apparatus according to claim 7, wherein the substrate comprises a first coaxial feeder and a second coaxial feeder, the first coaxial feeder is located below the first balun, the second coaxial feeder is located below the second balun, the reference ground is an external conductor of the first coaxial feeder and an external conductor of the second coaxial feeder, the first feed terminal is an inner conductor of the first coaxial feeder, and the second feeding terminal is an inner conductor of the second coaxial feeder. ### Claim 10 (depends on 1) The radiation apparatus according to claim 1, wherein the radiation module further comprises a third insulating substrate that is disposed along a second direction, and the first radiation unit, the second radiation unit, the third radiation unit, and the fourth radiation unit are a metal layer disposed on an upper surface of the third insulating substrate. ### Claim 11 (depends on 1) The radiation apparatus according to claim 1, wherein the first radiation unit, the second radiation unit, the third radiation unit and the fourth radiation unit are isolated from each other. ### Claim 12 A multi-band array antenna, comprising: a reflection panel and a radiation apparatus array disposed on the reflection panel, wherein the radiation apparatus array comprises a first radiation apparatus and a second radiation apparatus that are disposed adjacent to each other, a frequency band in which the first radiation apparatus operates is higher than a frequency band in which the second radiation apparatus operates, and the second radiation apparatus comprises a radiation module, a first balun, and a second balun, wherein the first balun is connected to the second balun on one side of the radiation module; the radiation module comprises a first radiation unit and a second radiation unit that are arranged in a +45° polarization direction, and a third radiation unit and a fourth radiation unit that are arranged in a −45° polarization direction; and the first balun is configured to feed a first differential signal to the first radiation unit and the second radiation unit, the second balun is configured to feed a second differential signal into the third radiation unit and the fourth radiation unit, and the first balun and the second balun are disposed in a same plane; wherein the first balun and the second balun each comprise a feeding conductor, a first reference ground conductor, a second reference ground conductor, and a fastener, wherein the fastener is configured to fasten relative positions of the feeding conductor, the first reference ground conductor and the second reference ground conductor; the feeding conductor comprises a first feeding conductor segment and a second feeding conductor segment that extend in a first direction, the first feeding conductor segment and the second feeding conductor segment are arranged in parallel, a lower end of the first feeding conductor segment is a signal input end, and an upper end of the second feeding conductor segment is electrically connected to an upper end of the first feeding conductor segment; the first reference ground conductor is parallel to the first feeding conductor segment, a capacitive coupling effect can be generated between the first reference ground conductor and the first feeding conductor segment, a lower end of the first reference ground conductor is a reference ground connection end, and an upper end of the first reference ground conductor is a first signal output end; the second reference ground conductor is parallel to the second feeding conductor segment, a capacitive coupling effect can be generated between the second reference ground conductor and the second feeding conductor segment, a lower end of the second reference ground conductor is a reference ground connection end, and an upper end of the second reference ground conductor is a second signal output end; and the first signal output end and the second signal output end of the first balun are respectively electrically connected to the first radiation unit and the second radiation unit, and the first signal output end and the second signal output end of the second balun are respectively electrically connected to the third radiation unit and the fourth radiation unit. ### Claim 13 (depends on 12) The multi-band array antenna according to claim 12, wherein the first radiation unit, the second radiation unit, the third radiation unit and the fourth radiation unit are isolated from each other.