# US 2018/0026353 A1 · Antenna structure and wireless communication device using same > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2018/0026353 A1 - Document ID: US20180026353A1 - Status: Published application - Kind: A1 - Application number: 15/653,679 - Filed: 2017-07-19 - Published: 2018-01-25 - Earliest claimed: 2016-07-21 - Assignees: Chiun Mai Communication Systems, Inc. - Applicants: Chiun Mai Communication Systems, Inc. - Inventors: YU-KAI TSENG; KUO-LUN HUANG; MING-YU CHOU - Web page: https://patentgrep.com/patent/US20180026353A1 ## CPC - H01Q 1/243: {with built-in antennas} - H01Q 5/10: Resonant antennas - H01Q 5/371: Branching current paths - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q 13/10: Resonant slot antennas - H01Q 21/28: Combinations of substantially independent non-interacting antenna units or systems {(multiple beam H01Q25/00)} - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna structure includes a housing, a first feed portion, a first ground portion, and a second ground portion. The housing defines a slot, a first groove, and a gap. The housing is divided into a first portion and a second portion by the slot, the first groove, and the gap. The first portion is further divided into a first radiating portion and a second radiating portion by the first feed portion. A first portion of the housing extending from the first feed portion to the first gap forms the first radiating portion. A second portion of the housing extending from the first feed portion to the groove forms the second radiating portion. The second radiating portion is shorter than the second portion. The second portion is shorter than the first radiating portion. The first portion activates a first operation mode and the second portion activates a second operation mode. ## Claims ### Claim 1 An antenna structure comprising: a housing, the housing defining a slot, a first gap, and a groove, the slot comprising a first end and a second end, wherein the first gap is defined on the housing corresponding to the first end and communicates with the slot; the groove is defined on a portion of the housing between the first end and the second end, the groove communicates with the slot; the housing is divided into a first portion and a second portion by the first gap, the groove, and the slot; a first portion of the housing between the first gap and the groove forms the first portion; and a second portion of the housing between the gap and the second end forms the second portion; a first feed portion, the first feed portion electrically connected to the first portion and the first portion being divided into a first radiating portion and a second radiating portion by the first feed portion; wherein a first portion of the housing extending from the first feed portion to the first gap forms the first radiating portion, and a second portion of the housing extending from the first feed portion to the groove forms the second radiating portion; a first ground portion, the first ground portion electrically connected to the first radiating portion; and a second ground portion, the second ground portion electrically connected to the second radiating portion; wherein the second radiating portion is shorter than the second portion, the second portion is shorter than the first radiating portion, the first portion activates a first operation mode, and the second portion activates a second operation mode. ### Claim 2 (depends on 1) The antenna structure of claim 1, wherein the slot, the first gap, and the groove are all filled with insulating material. ### Claim 3 (depends on 1) The antenna structure of claim 1, wherein the housing at least comprises a front frame and a side frame, the front frame is positioned around a periphery of the side frame, the slot is defined on the side frame, and the first gap and the groove are defined on the front frame. ### Claim 4 (depends on 1) The antenna structure of claim 1, wherein the housing further defines a second gap, the second gap is defined on the housing corresponding to the second end and communicates with the slot, a portion of the housing between the groove and the second gap forms the second portion. ### Claim 5 (depends on 1) The antenna structure of claim 1, further comprising a radiator and two second feed portions, wherein one of the two second feed portions is electrically connected to the second portion, the other of the two second feed portions is electrically connected to the radiator, and the second portion is grounded. ### Claim 6 (depends on 5) The antenna structure of claim 5, wherein when the first feed portion supplies current, the current flows through the first radiating portion and is grounded through the first ground portion; when the first feed portion supplies current, the current flows through the second radiating portion and is grounded through the second ground portion; the first radiating portion and the second radiating portion cooperatively activate the first operation mode to generate radiation signals in a first frequency band; when one of the two the second feed portions supplies current, the current flows through the second portion and is grounded through the second portion, the second portion activates the second operation mode to generate radiation signals in a second frequency band; when the other of the two the second feed portions supplies current, the current flows through the radiator, and the radiator activates a third operation mode to generate radiation signals in a third frequency band. ### Claim 7 (depends on 6) The antenna structure of claim 6, wherein the first operation mode is a LTE mode, the second operation mode is a GPS/GLONASS mode, and the third operation mode is a WIFI mode. ### Claim 8 (depends on 5) The antenna structure of claim 5, wherein the radiator comprises a connecting portion, a first branch, and a second branch, the connecting portion comprises a first connecting section and a second connecting section, the first connecting section is electrically connected to one of two second feed portions to feed current to the radiator; the second connecting section is perpendicularly connected to an end of the first connecting section to form a L-shaped structure with the first connecting section; the first branch comprises a first extending section, a second extending section, and a third extending section, the first extending section is connected to the end of the second connecting section away from the first connecting section and extends along a direction perpendicular and away from the first connecting section to be collinear with the second connecting section; one end of the second extending section is perpendicularly connected to the end of the first extending section away from the second connecting section, another end of the second extending section extends along a direction parallel to the first connecting section away from the first extending section; one end of the third extending section is electrically connected to the end of the second extending section away from the first extending section, another end of the third extending section extends along a direction parallel to the second connecting section towards the first connecting section; the second branch comprises a first resonance section and a second resonance section; one end of the first resonance section is perpendicularly connected to a junction of the second connecting section and the first extending section, another end of the first resonance section extends along a direction parallel to the first connecting section; one end of the second resonance section is perpendicularly connected to the end of the first resonance section away from the second connecting section and the first extending section, another end of the second resonance section extends along a direction perpendicular to the first resonance section towards the second extending section to form the L-shaped structure with the first resonance section. ### Claim 9 (depends on 5) The antenna structure of claim 5, further comprising a third ground portion, wherein the radiator comprises a first radiating arm, a second radiating arm, a third radiating arm, a fourth radiating arm, a fifth radiating arm, and a sixth radiating arm; the second radiating arm is perpendicularly connected to a middle position of the first radiating arm, the third radiating arm is perpendicularly connected to the end of the second radiating arm away from the first radiating arm and extends along a direction parallel to the first radiating arm; one end of the fourth radiating arm is perpendicularly connected to a junction of the second radiating arm and the third radiating arm, another end of the fourth radiating arm extends along a direction parallel to the first radiating arm away from the third radiating arm to form a H-shaped structure with the first radiating arm, the second radiating arm, and the third radiating arm; the fifth radiating arm is perpendicularly connected to the end of the fourth radiating arm away from the third radiating arm and extends along a direction parallel to the second radiating arm; the sixth radiating section is substantially arc-shaped, the sixth radiating arm is connected to the end of the fifth radiating arm away from the fourth radiating arm; one of the first radiating arm and the third radiating arm is electrically connected to one of the two second feed portions, and the other of the first radiating arm and the third radiating arm is electrically connected to the third ground portion. ### Claim 10 (depends on 5) The antenna structure of claim 5, wherein the radiator comprises a first radiating arm, a second radiating arm, a fourth radiating arm, a fifth radiating arm, and a sixth radiating arm; the first radiating arm is electrically connected to one of two second feed portions, the second radiating arm is perpendicularly connected to a middle position of the first radiating arm, one end of the fourth radiating arm is perpendicularly connected to the end of the second radiating arm away from the first radiating arm, another end of the fourth radiating arm extends along a direction parallel to the first radiating arm; the fifth radiating arm is perpendicularly connected to the end of the fourth radiating arm away from the second radiating arm and extends along a direction parallel to the second radiating arm; the sixth radiating section is substantially arc-shaped, the sixth radiating arm is connected to the end of the fifth radiating arm away from the fourth radiating arm. ### Claim 11 (depends on 1) The antenna structure of claim 1, further comprising a first switching circuit, wherein the first switching circuit comprises a first switching unit and a plurality of first switching elements, the first switching unit is electrically connected to the first ground portion, the first switching elements are connected in parallel to each other, one end of each first switching element is electrically connected to the first switching unit, and the other end of each first switching element is grounded; through controlling the first switching unit to switch, the first radiating portion is switched to different first switching elements and a frequency band of the first radiating portion is adjusted. ### Claim 12 (depends on 1) The antenna structure of claim 1, further comprising a second switching circuit, wherein the second switching circuit comprises a second switching unit and a plurality of second switching elements, the second switching unit is electrically connected to the second ground portion, the second switching elements are connected in parallel to each other, one end of each second switching element is electrically connected to the second switching unit, and the other end of each second switching element is grounded; through controlling the second switching unit to switch, the second radiating portion is switched to different second switching elements and a frequency band of the second radiating portion is adjusted. ### Claim 13 (depends on 1) The antenna structure of claim 1, wherein a wireless communication device uses the first portion to receive or send wireless signals at multiple frequency bands simultaneously through carrier aggregation (CA) technology of Long Term Evolution Advanced (LTE-A). ### Claim 14 (depends on 1) The antenna structure of claim 1, further comprising a radiator and a second feed portion, wherein the second feed portion is electrically connected to the radiator, and the second portion is grounded. ### Claim 15 (depends on 14) The antenna structure of claim 14, wherein when the first feed portion supplies current, the current flows through the first radiating portion and is grounded through the first ground portion; when the first feed portion supplies current, the current flows through the second radiating portion and is grounded through the second ground portion; the first radiating portion and the second radiating portion cooperatively activate the first operation mode to generate radiation signals in a first frequency band; when the second feed portions supplies current, the current flows through the radiator and is coupled to the second portion, the second portion activates the second operation mode to generate radiation signals in a second frequency band; when the current flows through the radiator, the radiator further activates a third operation mode to generate radiation signals in a third frequency band. ### Claim 16 (depends on 15) The antenna structure of claim 15, wherein the first operation mode is a LTE mode, the second operation mode is a GPS/GLONASS mode, and the third frequency band comprises a high frequency band of the first operation mode, a Bluetooth frequency band, and a WIFI frequency band. ### Claim 17 (depends on 14) The antenna structure of claim 14, wherein the radiator comprises a first radiating section, a second radiating section, a third radiating section, a fourth radiating section, and a fifth radiating section connected in that order; the first radiating section is electrically connected to the second feed portion; the second radiating section is perpendicularly connected to the end of the first radiating section away from the second feed portion; the third radiating section is perpendicularly connected to the end of the second radiating section away from the first radiating section; the fourth radiating section is perpendicularly connected to the end of the third radiating section away from the second radiating section and extends along a direction parallel to the second side portion to form a U-shaped structure with the second radiating section and the third radiating section; the fifth radiating section is perpendicularly connected to the fourth radiating section away from the third radiating section and extends along a direction parallel to the third radiating section towards the second radiating section to form a U-shaped structure with the third radiating section and the fourth radiating section. ### Claim 18 (depends on 17) The antenna structure of claim 17, wherein when the first feed portion supplies current, the current flows through the first radiating portion and is grounded through the first ground portion; when the first feed portion supplies current, the current flows through the second radiating portion and is grounded through the second ground portion; the first radiating portion and the second radiating portion cooperatively activate the first operation mode to generate radiation signals in a first frequency band; when the second feed portions supplies current, the current flows through the radiator and is coupled to the second portion, the second portion activates the second operation mode to generate radiation signals in a second frequency band; when the current flows through the radiator, the radiator further activates a third operation mode to generate radiation signals in a third frequency band. ### Claim 19 (depends on 18) The antenna structure of claim 18, wherein the first operation mode is a LTE mode, the second operation mode is a GPS/GLONASS mode, and the third frequency band comprises a high frequency band of the first operation mode, a Bluetooth frequency band, and a WIFI frequency band. ### Claim 20 (depends on 19) The antenna structure of claim 19, wherein the second feed portion comprises a diplexer and a signal extractor, two output ends of the diplexer provides the WIFI 2.4G signals and LTE high frequency band signals to share a signal output/input path; the signal extractor provides GPS/GLONASS signals and non GPS/GLONASS signals to share a signal output/input path. ### Claim 21 (depends on 19) The antenna structure of claim 19, wherein the second feed portion comprises a triplexer, the triplexer provides GPS/GLONASS signals and non GPS/GLONASS signals to share a signal output/input path. ### Claim 22 A wireless communication device comprising: an antenna structure, the antenna structure comprising: a housing, the housing defining a slot, a first gap, and a groove, the slot comprising a first end and a second end, wherein the first gap is defined on the housing corresponding to the first end and communicates with the slot; the groove is defined on a portion of the housing between the first end and the second end, the groove communicates with the slot; the housing is divided into a first portion and a second portion by the first gap, the groove, and the slot; a first portion of the housing between the first gap and the groove forms the first portion; and a second portion of the housing between the gap and the second end forms the second portion; a first feed portion, the first feed portion electrically connected to the first portion and the first portion being divided into a first radiating portion and a second radiating portion by the first feed portion; wherein a first portion of the housing extending from the first feed portion to the first gap forms the first radiating portion, and a second portion of the housing extending from the first feed portion to the groove forms the second radiating portion; a first ground portion, the first ground portion electrically connected to the first radiating portion; and a second ground portion, the second ground portion electrically connected to the second radiating portion; wherein the second radiating portion is shorter than the second portion, the second portion is shorter than the first radiating portion, the first portion activates a first operation mode, and the second portion activates a second operation mode. ### Claim 23 (depends on 22) The wireless communication device of claim 22, wherein the slot, the first gap, and the groove are all filled with insulating material. ### Claim 24 (depends on 22) The wireless communication device of claim 22, wherein the housing at least comprises a front frame and a side frame, the front frame is positioned around a periphery of the side frame, the slot is defined on the side frame, and the first gap and the groove are defined on the front frame. ### Claim 25 (depends on 22) The wireless communication device of claim 22, wherein the housing further defines a second gap, the second gap is defined on the housing corresponding to the second end and communicates with the slot, a portion of the housing between the groove and the second gap forms the second portion. ### Claim 26 (depends on 22) The wireless communication device of claim 22, wherein the antenna structure further comprises a radiator and two second feed portions, one of the two second feed portions is electrically connected to the second portion, the other of the two second feed portions is electrically connected to the radiator, and the second portion is grounded. ### Claim 27 (depends on 26) The wireless communication device of claim 26, wherein when the first feed portion supplies current, the current flows through the first radiating portion and is grounded through the first ground portion; when the first feed portion supplies current, the current flows through the second radiating portion and is grounded through the second ground portion; the first radiating portion and the second radiating portion cooperatively activate the first operation mode to generate radiation signals in a first frequency band; when one of the two the second feed portions supplies current, the current flows through the second portion and is grounded through the second portion, the second portion activates the second operation mode to generate radiation signals in a second frequency band; when the other of the two the second feed portions supplies current, the current flows through the radiator, and the radiator activates a third operation mode to generate radiation signals in a third frequency band. ### Claim 28 (depends on 27) The wireless communication device of claim 27, wherein the first operation mode is a LTE mode, the second operation mode is a GPS/GLONASS mode, and the third operation mode is a WIFI mode. ### Claim 29 (depends on 26) The wireless communication device of claim 26, wherein the radiator comprises a connecting portion, a first branch, and a second branch, the connecting portion comprises a first connecting section and a second connecting section, the first connecting section is electrically connected to one of two second feed portions to feed current to the radiator; the second connecting section is perpendicularly connected to an end of the first connecting section to form a L-shaped structure with the first connecting section; the first branch comprises a first extending section, a second extending section, and a third extending section, the first extending section is connected to the end of the second connecting section away from the first connecting section and extends along a direction perpendicular and away from the first connecting section to be collinear with the second connecting section; one end of the second extending section is perpendicularly connected to the end of the first extending section away from the second connecting section, another end of the second extending section extends along a direction parallel to the first connecting section away from the first extending section; one end of the third extending section is electrically connected to the end of the second extending section away from the first extending section, another end of the third extending section extends along a direction parallel to the second connecting section towards the first connecting section; the second branch comprises a first resonance section and a second resonance section; one end of the first resonance section is perpendicularly connected to a junction of the second connecting section and the first extending section, another end of the first resonance section extends along a direction parallel to the first connecting section; one end of the second resonance section is perpendicularly connected to the end of the first resonance section away from the second connecting section and the first extending section, another end of the second resonance section extends along a direction perpendicular to the first resonance section towards the second extending section to form the L-shaped structure with the first resonance section. ### Claim 30 (depends on 26) The wireless communication device of claim 26, wherein the antenna structure further comprises a third ground portion, the radiator comprises a first radiating arm, a second radiating arm, a third radiating arm, a fourth radiating arm, a fifth radiating arm, and a sixth radiating arm; the second radiating arm is perpendicularly connected to a middle position of the first radiating arm, the third radiating arm is perpendicularly connected to the end of the second radiating arm away from the first radiating arm and extends along a direction parallel to the first radiating arm; one end of the fourth radiating arm is perpendicularly connected to a junction of the second radiating arm and the third radiating arm, another end of the fourth radiating arm extends along a direction parallel to the first radiating arm away from the third radiating arm to form a H-shaped structure with the first radiating arm, the second radiating arm, and the third radiating arm; the fifth radiating arm is perpendicularly connected to the end of the fourth radiating arm away from the third radiating arm and extends along a direction parallel to the second radiating arm; the sixth radiating section is substantially arc-shaped, the sixth radiating arm is connected to the end of the fifth radiating arm away from the fourth radiating arm; one of the first radiating arm and the third radiating arm is electrically connected to one of the two second feed portions, and the other of the first radiating arm and the third radiating arm is electrically connected to the third ground portion. ### Claim 31 (depends on 26) The wireless communication device of claim 26, wherein the radiator comprises a first radiating arm, a second radiating arm, a fourth radiating arm, a fifth radiating arm, and a sixth radiating arm; the first radiating arm is electrically connected to one of two second feed portions, the second radiating arm is perpendicularly connected to a middle position of the first radiating arm, one end of the fourth radiating arm is perpendicularly connected to the end of the second radiating arm away from the first radiating arm, another end of the fourth radiating arm extends along a direction parallel to the first radiating arm; the fifth radiating arm is perpendicularly connected to the end of the fourth radiating arm away from the second radiating arm and extends along a direction parallel to the second radiating arm; the sixth radiating section is substantially arc-shaped, the sixth radiating arm is connected to the end of the fifth radiating arm away from the fourth radiating arm. ### Claim 32 (depends on 22) The wireless communication device of claim 22, wherein the antenna structure further comprises a first switching circuit, the first switching circuit comprises a first switching unit and a plurality of first switching elements, the first switching unit is electrically connected to the first ground portion, the first switching elements are connected in parallel to each other, one end of each first switching element is electrically connected to the first switching unit, and the other end of each first switching element is grounded; through controlling the first switching unit to switch, the first radiating portion is switched to different first switching elements and a frequency band of the first radiating portion is adjusted. ### Claim 33 (depends on 22) The wireless communication device of claim 22, wherein the antenna structure further comprises a second switching circuit, the second switching circuit comprises a second switching unit and a plurality of second switching elements, the second switching unit is electrically connected to the second ground portion, the second switching elements are connected in parallel to each other, one end of each second switching element is electrically connected to the second switching unit, and the other end of each second switching element is grounded; through controlling the second switching unit to switch, the second radiating portion is switched to different second switching elements and a frequency band of the second radiating portion is adjusted. ### Claim 34 (depends on 22) The wireless communication device of claim 22, wherein the wireless communication device uses the first portion to receive or send wireless signals at multiple frequency bands simultaneously through carrier aggregation (CA) technology of Long Term Evolution Advanced (LTE-A). ### Claim 35 (depends on 22) The wireless communication device of claim 22, wherein the antenna structure further comprises a radiator and a second feed portion, the second feed portion is electrically connected to the radiator, and the second portion is grounded. ### Claim 36 (depends on 35) The wireless communication device of claim 35, wherein when the first feed portion supplies current, the current flows through the first radiating portion and is grounded through the first ground portion; when the first feed portion supplies current, the current flows through the second radiating portion and is grounded through the second ground portion; the first radiating portion and the second radiating portion cooperatively activate the first operation mode to generate radiation signals in a first frequency band; when the second feed portions supplies current, the current flows through the radiator and is coupled to the second portion, the second portion activates the second operation mode to generate radiation signals in a second frequency band; when the current flows through the radiator, the radiator further activates a third operation mode to generate radiation signals in a third frequency band. ### Claim 37 (depends on 36) The wireless communication device of claim 36, wherein the first operation mode is a LTE mode, the second operation mode is a GPS/GLONASS mode, and the third frequency band comprises a high frequency band of the first operation mode, a Bluetooth frequency band, and a WIFI frequency band. ### Claim 38 (depends on 35) The wireless communication device of claim 35, wherein the radiator comprises a first radiating section, a second radiating section, a third radiating section, a fourth radiating section, and a fifth radiating section connected in that order; the first radiating section is electrically connected to the second feed portion; the second radiating section is perpendicularly connected to the end of the first radiating section away from the second feed portion; the third radiating section is perpendicularly connected to the end of the second radiating section away from the first radiating section; the fourth radiating section is perpendicularly connected to the end of the third radiating section away from the second radiating section and extends along a direction parallel to the second side portion to form a U-shaped structure with the second radiating section and the third radiating section; the fifth radiating section is perpendicularly connected to the fourth radiating section away from the third radiating section and extends along a direction parallel to the third radiating section towards the second radiating section to form a U-shaped structure with the third radiating section and the fourth radiating section. ### Claim 39 (depends on 38) The wireless communication device of claim 38, wherein when the first feed portion supplies current, the current flows through the first radiating portion and is grounded through the first ground portion; when the first feed portion supplies current, the current flows through the second radiating portion and is grounded through the second ground portion; the first radiating portion and the second radiating portion cooperatively activate the first operation mode to generate radiation signals in a first frequency band; when the second feed portions supplies current, the current flows through the radiator and is coupled to the second portion, the second portion activates the second operation mode to generate radiation signals in a second frequency band; when the current flows through the radiator, the radiator further activates a third operation mode to generate radiation signals in a third frequency band. ### Claim 40 (depends on 39) The wireless communication device of claim 39, wherein the first operation mode is a LTE mode, the second operation mode is a GPS/GLONASS mode, and the third frequency band comprises a high frequency band of the first operation mode, a Bluetooth frequency band, and a WIFI frequency band. ### Claim 41 (depends on 40) The wireless communication device of claim 40, wherein the second feed portion comprises a diplexer and a signal extractor, two output ends of the diplexer provides the WIFI 2.4G signals and LTE high frequency band signals to share a signal output/input path; the signal extractor provides GPS/GLONASS signals and non GPS/GLONASS signals to share a signal output/input path. ### Claim 42 (depends on 40) The wireless communication device of claim 40, wherein the second feed portion comprises a triplexer, the triplexer provides GPS/GLONASS signals and non GPS/GLONASS signals to share a signal output/input path.