CN110581347B - Be applied to dicyclo antenna of 4G-MIMO intelligent glasses - Google Patents

Be applied to dicyclo antenna of 4G-MIMO intelligent glasses Download PDF

Info

Publication number
CN110581347B
CN110581347B CN201910807766.3A CN201910807766A CN110581347B CN 110581347 B CN110581347 B CN 110581347B CN 201910807766 A CN201910807766 A CN 201910807766A CN 110581347 B CN110581347 B CN 110581347B
Authority
CN
China
Prior art keywords
glasses
antenna
capacitor
decoupling
inductor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN201910807766.3A
Other languages
Chinese (zh)
Other versions
CN110581347A (en
Inventor
王艳艳
班永灵
赵星影
公晓庆
李肖飞
王冰
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
University of Electronic Science and Technology of China
Original Assignee
University of Electronic Science and Technology of China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by University of Electronic Science and Technology of China filed Critical University of Electronic Science and Technology of China
Priority to CN201910807766.3A priority Critical patent/CN110581347B/en
Publication of CN110581347A publication Critical patent/CN110581347A/en
Application granted granted Critical
Publication of CN110581347B publication Critical patent/CN110581347B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/273—Adaptation for carrying or wearing by persons or animals
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
    • H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/48—Earthing means; Earth screens; Counterpoises
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/52—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure
    • H01Q1/521—Means for reducing coupling between antennas; Means for reducing coupling between an antenna and another structure reducing the coupling between adjacent antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q23/00—Antennas with active circuits or circuit elements integrated within them or attached to them
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q5/00—Arrangements for simultaneous operation of antennas on two or more different wavebands, e.g. dual-band or multi-band arrangements

Landscapes

  • Details Of Aerials (AREA)

Abstract

The invention belongs to the technical field of wearable antennas, and particularly relates to a double-loop antenna applied to 4G-MIMO intelligent glasses, which fully utilizes the shape of the glasses, prints the loop antenna on a glasses frame, and forms an MIMO antenna structure according to the symmetry performance of the glasses; the invention realizes the coverage of frequency bands such as GSM850/900, GSM1800/1900, UMTS2100, LTE2300/2500 and the like by loading a matching circuit; furthermore, the invention effectively reduces the near-field coupling between the two antennas by loading a decoupling parasitic element, so that the minimum isolation of the two antennas at a low frequency band is also less than-15 dB; moreover, the influence of the introduction of the decoupling parasitic element on the self-impedance of the antenna is small, and the bandwidth can still cover the two frequency bands 824-960MHz and 1710-2690MHz of 4G. Therefore, the double-loop antenna not only meets the application of the intelligent glasses, but also meets the decoupling requirement.

Description

Be applied to dicyclo antenna of 4G-MIMO intelligent glasses
Technical Field
The invention belongs to the technical field of wearable antennas, and particularly relates to a double-ring antenna applied to 4G-MIMO intelligent glasses.
Background
In recent years, a multiple-input multiple-output MIMO technology has been proposed, which can effectively improve the performance of a wireless communication system, and improve the channel capacity and communication quality of the system by using the characteristics of multiple paths; in this technology, the design of the antenna plays a very important role, since it is the transmission tool for communication between the transmitter and the receiver. Whereas to obtain the performance of a MIMO system, the antennas at the transmitter and receiver should be uncorrelated; theoretically, when the distance between two antennas reaches more than half wavelength of the antennas, the antennas cannot affect each other, but the distance cannot be realized by miniaturized intelligent equipment; therefore, it is necessary to reduce the coupling using decoupling techniques.
Two difficulties exist in the process of designing the MIMO antenna, one is that the bandwidth is narrow for a simple antenna structure, multiple frequency bands are difficult to cover, extra resonance is generated by generally adding parasitic branches, and then broadband coverage is obtained; for the intelligent glasses antenna, the structure and the form are fixed, and the scheme of adding the parasitic branches is limited, so that the resonant frequency of the antenna can be adjusted by a method of loading the matching circuit, and the required frequency band requirement can be met.
Another technical problem of MIMO antennas is that mutual coupling exists between antennas, and the methods of reducing coupling between antennas can be divided into external decoupling and internal decoupling. External decoupling including parasitic element decoupling, matching circuit decoupling, floor printing seam decoupling, and neutral line decoupling, which are added in the antenna structure; the antenna bandwidth obtained by adding the matching circuit to reduce the coupling is narrower, and in addition, most matching circuits are similar to a filter structure, so that multi-mode decoupling can be realized by referring to a multi-mode filter theory, but if the number of decoupling modes is increased, the design becomes difficult, and a matrix corresponding to the filter becomes complicated; floor print slot decoupling, which is actually for antenna elements sharing a floor, reduces the flow of floor current between two antenna elements through a slot, thereby reducing coupling; the design of the neutralization line does not have a standard criterion, and the reduction of the broadband mutual coupling is difficult to realize. The internal decoupling comprises odd-even mode decoupling, mirror image antenna element decoupling, characteristic mode theory decoupling and multi-polarization decoupling; good isolation of the eigenmodes can be achieved for frequency bands below 1GHz, but it is difficult to control the frequency of the multi-eigenmode because flexibility in adapting the radiator is limited; in addition, there is a method of defectively decoupling for antennas sharing a floor, but this structure is too bulky for mobile terminals.
For the double-loop antenna applied to the 4G-MIMO intelligent glasses, the two simple loop antennas realize the coverage of the frequency band through the matching circuit; since the two antennas do not share a common floor structure, neither of the two decoupling methods of defected ground and floor slotting can achieve a reduction in mutual coupling; and, since the form of the glasses is single and the structure is fixed, the required design space of the decoupling scheme of the matching circuit is also greatly limited.
Disclosure of Invention
The invention aims to solve the design difficulty of a double-loop antenna applied to 4G-MIMO intelligent glasses, provides the double-loop antenna applied to the 4G-MIMO intelligent glasses, realizes the coverage of frequency bands such as GSM850/900, GSM1800/1900, UMTS2100, LTE2300/2500 and the like on a 4G-MIMO intelligent glasses frame, effectively reduces the coupling between the two antennas and greatly improves the performance parameters of the antennas.
In order to achieve the purpose, the invention adopts the technical scheme that:
the utility model provides a be applied to dicyclo antenna of 4G-MIMO intelligent glasses, dicyclo antenna is bilateral symmetry structure, includes: the spectacle frame comprises a spectacle frame dielectric substrate 1, a spectacle leg dielectric substrate 2 vertically connected with the spectacle frame dielectric substrate 1, a metal ring 3 arranged on the front surface of the spectacle frame dielectric substrate 1, a metal floor 4 arranged on the outer side of the spectacle leg dielectric substrate 2, a microstrip feeder line 5, a ground short circuit line 6 and a matching circuit 7; the glasses frame is characterized in that the metal ring 3 is an open metal ring, and the open position of the metal ring is over against the connection position of the glasses frame medium substrate 1 and the glasses leg medium substrate 2; the upper opening end of the opening metal ring is connected with the metal floor through a grounding short circuit line 6, the lower opening end is connected with the metal floor 4 through a microstrip feeder line 5, and the joint of the microstrip feeder line 5 and the metal floor 4 is used as a feed port to realize feed; the microstrip feed line is characterized in that a matching circuit is arranged on the microstrip feed line and comprises a capacitor CH1Capacitor CH2Inductor LH1Inductor LL2Inductor LL1And a capacitor CL1(ii) a Wherein the capacitance CH2One end is connected with the metal ring 3 and the other end is connected with the metal ringEnd is sequentially connected with a capacitor C in seriesH1Inductor LL2Inductor LL1Said inductance LL1The other end of the first power supply is connected with the feed port; the capacitor CL1One terminal and an inductor LL1Inductor LL2The other ends are connected with the ground; the inductance LH1One terminal and a capacitor CH1Capacitor CH1Connected and the other end is grounded.
Further, the double-loop antenna further comprises a decoupling parasitic element 8, wherein the decoupling parasitic element 8 is arranged along the upper edge of the dielectric substrate of the glasses frame, and a uniform gap is kept between the decoupling parasitic element 8 and the metal ring 3.
Further, the width of the metal ring is 2 mm.
The width of parasitic element of decoupling is 1mm, length is 200mm, the clearance between metal ring and the parasitic element of decoupling is 1 mm.
The microstrip feed line 5 is composed of a 50 ohm radio frequency line.
The invention has the beneficial effects that:
the double-loop antenna applied to the 4G MIMO intelligent glasses fully utilizes the shape of the glasses, the loop antenna is printed on a glasses frame, and an MIMO antenna structure is formed according to the symmetry performance of the glasses; the invention can cover 4G high and low frequency bands by loading the matching circuit, and meanwhile, no breakpoint is arranged on the loop antenna, thus the invention conforms to the beauty and the obdurability of the design of the all-metal frame. Furthermore, because near-field coupling exists between the two loop antennas, the invention combines the shape of the glasses, loads a decoupled parasitic element on the upper edges of the two loop antennas, the width of the parasitic element is 1mm, the length of the parasitic element is 200mm, and the distance between the parasitic element and the loop antennas is 1 mm; and, the decoupling element matches the shape of the glasses, the middle part is sunken downwards, and the sunken degree is 10 mm. In the invention, before a decoupling parasitic element is not added, the intelligent glasses antenna can cover two frequency bands 824-; the added decoupling parasitic element is equivalent to a dipole which resonates at 0.86GHz, so that the amplitude of S12 of the two antennas generates a coupling zero point at 0.86GHz, the coupling zero point is about-35 dB, and the minimum isolation at a low frequency band is also less than-15 dB; moreover, the influence of the introduction of the decoupling parasitic element on the self-impedance of the antenna is small, and the bandwidth can still cover the two frequency bands 824-960MHz and 1710-2690MHz of 4G.
Drawings
Fig. 1 is a schematic structural diagram of a dual-ring antenna applied to 4G MIMO smart glasses according to embodiment 1 of the present invention;
fig. 2 is a schematic structural diagram of a dual-loop antenna loaded with decoupling parasitic elements and applied to 4G MIMO smart glasses according to embodiment 2 of the present invention;
FIG. 3 is an abstract circuit schematic of the matching circuit loaded by the present invention, including a high pass matching circuit and a low pass matching circuit;
FIG. 4 is a graph of the test and simulated return loss of the dual-loop antenna applied to 4G MIMO smart glasses in example 1;
FIG. 5 is a diagram of the test and simulation return loss of the dual-loop antenna applied to 4G MIMO smart glasses loaded with decoupling parasitic elements in embodiment 2;
wherein: the structure comprises a spectacle frame dielectric substrate 1, a spectacle leg dielectric substrate 2, a metal ring 3, a metal floor 4, a microstrip feeder line 5, a ground short-circuit line 6, a matching circuit 7 and a decoupling parasitic element 8.
Detailed Description
The invention is further described below with reference to the figures and examples.
Example 1
The embodiment provides a double-loop antenna applied to 4G-MIMO smart glasses, the structure of which is shown in fig. 1, the double-loop antenna forms a left and right symmetrical double-antenna structure, and the two antennas are connected through a glasses frame dielectric substrate; the method specifically comprises the following steps: the spectacle frame comprises a spectacle frame dielectric substrate 1, a spectacle leg dielectric substrate 2 vertically connected with the spectacle frame dielectric substrate 1, a metal ring 3 arranged on the front surface of the spectacle frame dielectric substrate 1, a metal floor 4 arranged on the outer side of the spectacle leg dielectric substrate 2, a microstrip feeder line 5, a ground short circuit line 6 and a matching circuit 7; the metal ring 3 is an open metal ring, and the open position of the metal ring is opposite to the connection position of the glasses frame medium substrate 1 and the glasses leg medium substrate 2; the openingThe upper opening end of the metal ring is connected with the metal floor through a grounding short circuit line 6, the lower opening end is connected with the metal floor 4 through a microstrip feeder 5, and the joint of the microstrip feeder 5 and the metal floor 4 is used as a feed port to realize feed; the microstrip feeder line 5 is provided with a matching circuit 7, and the matching circuit 7 comprises a capacitor CH1Capacitor CH2Inductor LH1Inductor LL2Inductor LL1And a capacitor CL1Wherein the capacitance CH2One end of the capacitor is connected with the metal ring 3, and the other end is sequentially connected with the capacitor C in seriesH1Inductor LL2Inductor LL1Said inductance LL1The other end of the capacitor C is connected with a feed portL1One terminal and an inductor LL1Inductor LL2Connected with each other, the other end is grounded, and the inductor LH1One terminal and a capacitor CH1Capacitor CH1Connected and the other end is grounded.
In this embodiment, the high-pass matching circuit CH1＝0.9pF，CH2＝0.5Pf，LH116nH, which is used to adjust low band resonance and matching; low-pass matching circuit LL1＝0.5nH，LL2＝3.5nH，CL10.35pF, which is used to adjust the high band resonance and matching, as shown in fig. 3; the matching circuit 7 is used for adjusting the matching and resonant frequency of the antenna to cover the frequency bands of GSM850/900, GSM1800/1900, UMTS2100 and LTE 2300/2500.
Furthermore, in this embodiment, the antenna has a bilateral symmetry structure, so the number of the dielectric substrate 2 of the earpiece, the metal ring 3, the metal floor 4, the microstrip feed line 5, the ground short-circuit line 6, and the matching circuit 7 is two. The microstrip feed line 5 is composed of a 50 ohm radio frequency line.
The double-loop antenna is subjected to simulation test, and under the action of the matching circuit 7, the return loss of frequency bands such as GSM850/900, GSM1800/1900, UMTS2100, LTE2300/2500 and the like is lower than-6 dB; through test verification, the embodiment can achieve the bandwidth coverage of seven communication frequency bands of 824-960MHz and 1710-2690MHz with the aid of the matching circuit 7, the test and simulation return loss diagram result is shown in fig. 4, and the antenna is not provided with a breakpoint, does not need additional parasitic branches to adjust matching, and meets the application of intelligent glasses.
Example 2
The embodiment provides a double-loop antenna loaded with decoupling parasitic elements and applied to 4G MIMO smart glasses, the structure of which is shown in fig. 2, and the difference from embodiment 1 is that the double-loop antenna further includes decoupling parasitic elements 8, and the decoupling parasitic elements 8 are arranged along the upper edge of a dielectric substrate of a glasses frame and maintain a uniform gap with a metal ring 3.
Further, the width of the metal ring is 2 mm. The width of the decoupling parasitic element is 1mm, and the length of the decoupling parasitic element is 200 mm. And the gap between the decoupling parasitic element and the metal loop antenna is 1 mm. In addition, in order to meet the requirement of high isolation and the aesthetic property of the smart glasses antenna, the middle part of the decoupling parasitic element is sunken downwards along the edge of the glasses frame, and the sunken degree is 10 mm.
In this embodiment, the metal loop 3 antenna generates a loop fundamental mode, which covers the bandwidth of the 4G low frequency band with the aid of the high-pass matching circuit; the high-order mode generated by the metal ring 3 can cover high frequency bands such as GSM1800/1900, U MTS2100 and the like with the help of a low-pass matching circuit; however, since the distance between the two metal loop antennas is relatively close, the coupling at the low frequency band reaches about-8 dB, and it is difficult to meet the communication requirement, the loaded decoupling parasitic element 8 can effectively reduce the mutual coupling of the two antennas, the length of the decoupling parasitic element 8 is about 200mm, and the decoupling parasitic element operates at about 0.86GHz in 1/2 λ mode of dipole, so that a coupling zero point exists in S12 of the two antennas at 0.86GHz, the coupling zero point is reduced to about-35 dB, and the maximum coupling at the whole 4G low frequency band is also lower than-15 dB. Meanwhile, the influence of the addition of decoupling parasitic elements on the self impedance of the antenna is small, and the antenna can still cover the 4G high-low frequency band.
Simulation verification shows that the double-loop antenna loaded with the decoupling parasitic element and applied to the 4G-MIMO intelligent glasses in the embodiment can cover frequency bands of GSM850/900, GSM1800/1900, UMTS2100, LTE2300/2500 and the like, and under the loading of the decoupling parasitic element, the coupling between the two antenna elements also reaches the communication standard, and the simulation return loss diagram result is shown in FIG. 5; the simulation result shows that the invention is suitable for the application of the intelligent glasses antenna.
While the invention has been described with reference to specific embodiments, any feature disclosed in this specification may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise; all of the disclosed features, or all of the method or process steps, may be combined in any combination, except mutually exclusive features and/or steps.

Claims (4)

1. The utility model provides a be applied to dicyclo antenna of 4G-MIMO intelligent glasses, dicyclo antenna is bilateral symmetry structure, includes: the glasses frame comprises a glasses frame dielectric substrate (1), a glasses leg dielectric substrate (2) vertically connected with the glasses frame dielectric substrate (1), a metal ring (3) arranged on the front surface of the glasses frame dielectric substrate (1), a metal floor (4) arranged on the outer side of the glasses leg dielectric substrate (2), a microstrip feeder line (5), a ground short circuit line (6) and a matching circuit (7); the glasses frame is characterized in that the metal ring is an open metal ring, and the open position of the metal ring is over against the connection part of the glasses frame medium substrate and the glasses leg medium substrate; the upper opening end of the opening metal ring is connected with the metal floor through a grounding short circuit line, the lower opening end of the opening metal ring is connected with the metal floor through a microstrip feeder line, and the joint of the microstrip feeder line and the metal floor is used as a feed port; the microstrip feed line is characterized in that a matching circuit is arranged on the microstrip feed line and comprises a capacitor CH1Capacitor CH2Inductor LH1Inductor LL2Inductor LL1And a capacitor CL1(ii) a Wherein the capacitance CH2One end of the capacitor is connected with the metal ring 3, and the other end is sequentially connected with the capacitor C in seriesH1Inductor LL2Inductor LL1Said inductance LL1The other end of the first power supply is connected with the feed port; the capacitor CL1One terminal and an inductor LL1Inductor LL2The other ends are connected with the ground; the inductance LH1One terminal and a capacitor CH1Capacitor CH1The other ends are connected with the ground; the double-loop antenna also comprises a decoupling parasitic element (8) which is arranged along the upper edge of the dielectric substrate of the glasses frame and is uniform with the metal ringA gap.
2. The dual-loop antenna applied to 4G-MIMO smart glasses according to claim 1, wherein the width of the metal loop is 2 mm.
3. The dual-loop antenna applied to 4G-MIMO smart glasses according to claim 1, wherein the width of the decoupling parasitic element is 1mm, the length of the decoupling parasitic element is 200mm, and the gap between the metal loop and the decoupling parasitic element is 1 mm.
4. The dual-loop antenna for 4G-MIMO smart glasses according to claim 1, wherein the microstrip feed line is composed of a 50 ohm rf line.
CN201910807766.3A 2019-08-29 2019-08-29 Be applied to dicyclo antenna of 4G-MIMO intelligent glasses Active CN110581347B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910807766.3A CN110581347B (en) 2019-08-29 2019-08-29 Be applied to dicyclo antenna of 4G-MIMO intelligent glasses

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910807766.3A CN110581347B (en) 2019-08-29 2019-08-29 Be applied to dicyclo antenna of 4G-MIMO intelligent glasses

Publications (2)

Publication Number Publication Date
CN110581347A CN110581347A (en) 2019-12-17
CN110581347B true CN110581347B (en) 2021-04-30

Family

ID=68812343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910807766.3A Active CN110581347B (en) 2019-08-29 2019-08-29 Be applied to dicyclo antenna of 4G-MIMO intelligent glasses

Country Status (1)

Country Link
CN (1) CN110581347B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230238688A1 (en) * 2022-01-24 2023-07-27 Google Llc Parasitic element to reduce coupling between antennae on an eyeglass frame

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2093831A4 (en) * 2006-12-22 2010-03-03 Murata Manufacturing Co Antenna structure and wireless communication apparatus with that antenna structure
DE102008017622A1 (en) * 2008-04-04 2009-10-08 Deutsche Post Ag Antenna arrangement with at least two decoupled antenna coils; RF component for non-contact transmission of energy and data; electronic device with RF component
US8482158B2 (en) * 2008-09-27 2013-07-09 Witricity Corporation Wireless energy transfer using variable size resonators and system monitoring
CN201898204U (en) * 2010-12-08 2011-07-13 上海安费诺永亿通讯电子有限公司 Multi-antenna structure for realizing high isolation of broadband
GB2500209B (en) * 2012-03-13 2016-05-18 Microsoft Technology Licensing Llc Antenna isolation using a tuned ground plane notch
CN103856229A (en) * 2012-12-07 2014-06-11 宏碁股份有限公司 Glasses-type communication device
CN203288752U (en) * 2013-05-08 2013-11-13 广东盛路通信科技股份有限公司 High-isolation-degree multi-frequency transmitting-receiving antenna
TWI539657B (en) * 2013-10-23 2016-06-21 宏碁股份有限公司 Wearable communication device
CN204732527U (en) * 2015-06-02 2015-10-28 电子科技大学 Be applied to the wrist-watch antenna of Big Dipper location time dissemination system
EP3133745A1 (en) * 2015-08-20 2017-02-22 Center for Integrated Smart Sensors Foundation Band-type electronic device and antenna module included therein
CN205723940U (en) * 2016-04-28 2016-11-23 歌尔股份有限公司 A kind of FPC antenna and a kind of intelligent glasses
US10756425B2 (en) * 2016-11-03 2020-08-25 Tom Lavedas Adjustment of near-field gradient probe for the suppression of radio frequency interference and intra-probe coupling
CN207009640U (en) * 2017-05-31 2018-02-13 珠海市魅族科技有限公司 Electronic equipment
CN108987933A (en) * 2017-06-02 2018-12-11 天津三星通信技术研究有限公司 Near-field communication aerial structure and electric terminal with the near-field communication aerial structure
US10534203B2 (en) * 2017-07-31 2020-01-14 Snap Inc. Near-field antenna for eyewear

Also Published As

Publication number Publication date
CN110581347A (en) 2019-12-17

Similar Documents

Publication Publication Date Title
Cai et al. Wideband MIMO antenna array covering 3.3–7.1 GHz for 5G metal-rimmed smartphone applications
EP2660933B1 (en) Array antenna of mobile terminal and implementing method thereof
CN107959117B (en) Antenna assembly for reducing mutual coupling between antennas and self-healing decoupling method
US6759991B2 (en) Antenna arrangement
AU2018423290B2 (en) Antenna system and terminal device
Venkatasubramanian et al. Impact of using resistive elements for wideband isolation improvement
US9748661B2 (en) Antenna for achieving effects of MIMO antenna
CN109672019B (en) Terminal MIMO antenna device and method for realizing antenna signal transmission
CN101752675B (en) Double-frequency antenna and wireless communication device applying same
EP3767742B1 (en) Antenna device and mobile terminal
DE102013022167A1 (en) A capacitively coupled loop antenna and an electronic device containing it
Ishteyaq et al. Multiple input multiple output (MIMO) and fifth generation (5G): An indispensable technology for sub-6 GHz and millimeter wave future generation mobile terminal applications
CN211743388U (en) Wireless electronic device
CN106571523A (en) Terminal multiple-input-multiple-output high-isolation adjustable antenna
WO2013175903A1 (en) Antenna device and mimo wireless device
CN113471665B (en) Antenna and terminal
CN110581347B (en) Be applied to dicyclo antenna of 4G-MIMO intelligent glasses
CN115966900A (en) Broadband high-isolation dual-frequency MIMO single-pole cone antenna array
WO2023168941A1 (en) Feed line filtering antenna and communication device
CN209804897U (en) Multiple-input multiple-output antenna and terminal equipment
CN218940002U9 (en) Multiple-input multiple-output antenna and electronic device
CN110718745A (en) Multi-frequency multiplexing antenna device and smart watch
Chen et al. Compact dual-band MIMO monopole dual-antenna system for 5G laptops
Daghari et al. High Isolation With Defected Ground Structures For MIMO Elliptical Multi-Antennas
Zheng et al. Design and optimization of mini MIMO antenna

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant