# US 10,320,060 B2 · Antenna and mobile terminal > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,320,060 B2 - Document ID: US10320060B2 - Status: Granted - Kind: B2 - Application number: 16/057,374 - Filed: 2018-08-07 - Published: 2018-12-06 - Granted: 2019-06-11 - Earliest claimed: 2018-08-07 - Assignees: Huawei Device Co., Ltd. - Applicants: Huawei Device Co., Ltd. - Inventors: Hanyang Wang; Jianming Li - Web page: https://patentgrep.com/patent/US10320060B2 ## CPC - H01Q 1/243: {with built-in antennas} - H01Q 1/36: Structural form of radiating elements, e.g. cone, spiral, umbrella; {Particular materials used therewith}(H01Q1/08, H01Q1/14 take precedence) - H01Q 1/38: formed by a conductive layer on an insulating support {(patch antennas H01Q9/0407; microstrip dipole antennas H01Q9/065; microstrip slot antennas H01Q13/106; transmission line microstrip antennas H01Q13/206; manufacturing reflecting surfaces using insulating material for supporting the reflecting surface H01Q15/142)} - H01Q 1/48: Earthing means; Earth screens; Counterpoises - H01Q 5/00: Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements (combinations of separate active antenna units operating in different wavebands and connected to a common feeder system H01Q21/30) - H01Q 5/321: within a radiating element or between connected radiating elements - H01Q 5/378: Combination of fed elements with parasitic elements - H01Q 7/00: Loop antennas with a substantially uniform current distribution around the loop and having a directional radiation pattern in a plane perpendicular to the plane of the loop - H01Q 9/0414: {in a stacked or folded configuration} - H01Q 9/42: with folded element, the folded parts being spaced apart a small fraction of the operating wavelength - H01Q: ANTENNAS, i.e. RADIO AERIALS (radiators or antennas for microwave heating H05B6/72) ## Abstract An antenna, including a first radiation part, a matching circuit, and a feed source, where the first radiation part includes a first radiator, a second radiator, and a capacitor structure, a first end of the first radiator is connected to the feed source using the matching circuit, the feed source is connected to a grounding part, a second end of the first radiator is connected to a first end of the second radiator using the capacitor structure, a second end of the second radiator is connected to the grounding part, the first radiation part is configured to generate a first resonance frequency, and a length of the second radiator is one-eighth of a wavelength corresponding to the first resonance frequency which helps to reduce an antenna length, and a volume of a mobile terminal. ## Claims ### Claim 1 An antenna, comprising: a first radiation part configured to generate a first frequency, the first radiation part comprising: a capacitor structure configured as a series-distributed capacitor structure in a composite right/left-handed transmission line configuration; a first radiator comprising: a first end; and a second end; and a second radiator configured as a parallel distributed inductor in the composite right/left-handed transmission line configuration, the second radiator comprising: a first end connected to the second end of the first radiator using the capacitor structure; and a second end connected to a grounding part; a matching circuit; and a feed source connected to the first end of the first radiator using the matching circuit, the feed source further connected to the grounding part. ### Claim 2 (depends on 1) The antenna of claim 1, wherein the first radiator and the second radiator are metal sheets, wherein the first radiator and the second radiator are formed on a bracket, and wherein the bracket is an insulation medium. ### Claim 3 (depends on 1) The antenna of claim 1, wherein the capacitor structure is a capacitor. ### Claim 4 (depends on 1) The antenna of claim 1, wherein the first radiator and the second radiator are microstrips disposed on a circuit board, and wherein the first radiator part, the matching circuit and the grounding part are disposed on a same plane of the circuit board. ### Claim 5 (depends on 1) The antenna of claim 1, further comprising a second radiation part, wherein a first end of the second radiation part is connected to the second end of the first radiator, and wherein the second radiation part and the capacitor structure are configured to generate a first high-frequency resonance frequency. ### Claim 6 (depends on 1) The antenna of claim 1, wherein the first frequency is a low-frequency resonance frequency. ### Claim 7 (depends on 6) The antenna of claim 6, wherein the low-frequency resonance frequency is 800 megahertz (MHz). ### Claim 8 (depends on 1) The antenna of claim 1, wherein the grounding part is a ground of a circuit board. ### Claim 9 A mobile terminal, comprising: an antenna comprising: a first radiation part configured to generate a first frequency, the first radiation part comprising: a first radiator comprising a first end and a second end; a second radiator comprising: a first end connected to the second end of the first radiator using a capacitor structure; and a second end connected to a grounding part; and the capacitor structure; a matching circuit; and a feed source connected to the first end of the first radiator using the matching circuit, the feed source further connected to the grounding part; a radio frequency processor; and a baseband processor, wherein the antenna is configured to: transmit a received radio signal to the radio frequency processor; or convert a transmit signal of the radio frequency processor into an electromagnetic wave, and transmit the electromagnetic wave, wherein the radio frequency processor is configured to: perform frequency selection, amplification, and down-conversion processing on the received radio signal, convert the received radio signal into an intermediate frequency signal or a baseband signal, and transmit the intermediate frequency signal or the baseband signal to the baseband processor; or transmit, using the antenna, the baseband signal or the intermediate frequency signal that is sent by the baseband processor and that is obtained by means of up-conversion and amplification, and wherein the baseband processor is configured to perform processing on the intermediate frequency signal or the baseband signal. ### Claim 10 (depends on 9) The mobile terminal of claim 9, wherein the first radiator and the second radiator are metal sheets, wherein the first radiator and the second radiator are formed on a bracket, and wherein the bracket is an insulation medium. ### Claim 11 (depends on 9) The mobile terminal of claim 9, wherein the capacitor structure is a capacitor. ### Claim 12 (depends on 9) The mobile terminal of claim 9, wherein the first radiator and the second radiator are microstrips disposed on a circuit board, and wherein the first radiator part, the matching circuit and the grounding part are disposed on a same plane of the circuit board. ### Claim 13 (depends on 9) The mobile terminal of claim 9, wherein the antenna further comprises a second radiation part, wherein a first end of the second radiation part is connected to the second end of the first radiator, and wherein the second radiation part and the capacitor structure generate a first high-frequency resonance frequency. ### Claim 14 (depends on 9) The mobile terminal of claim 9, wherein the first frequency is a low-frequency resonance frequency. ### Claim 15 (depends on 14) The mobile terminal of claim 14, wherein the low-frequency resonance frequency is 800 megahertz (MHz). ### Claim 16 (depends on 9) The mobile terminal of claim 9, wherein the first radiation part is located on an antenna bracket. ### Claim 17 A mobile terminal comprising: an antenna comprising: a first radiation part configured to generate a first frequency, the first radiation part comprising: a capacitor structure configured as a series-distributed capacitor structure in a composite right/left-handed transmission line configuration; a first radiator comprising: a first end; and a second end; and a second radiator configured as a parallel distributed inductor in the composite right/left-handed transmission line configuration, the second radiator comprising: a first end connected to the second end of the first radiator using the capacitor structure; and a second end connected to a grounding part; a matching circuit; and a feed source connected to the first end of the first radiator using the matching circuit, the feed source further connected to the grounding part. ### Claim 18 (depends on 17) The mobile terminal of claim 17, wherein the capacitor structure is a capacitor. ### Claim 19 (depends on 17) The mobile terminal of claim 17, wherein the first frequency is a low-frequency resonance frequency. ### Claim 20 (depends on 17) The mobile terminal of claim 17, wherein the mobile terminal further comprises a circuit board comprising a ground, and wherein the grounding part is the ground.