CN111129708B - Terminal protection device - Google Patents
Terminal protection device Download PDFInfo
- Publication number
- CN111129708B CN111129708B CN201811296189.8A CN201811296189A CN111129708B CN 111129708 B CN111129708 B CN 111129708B CN 201811296189 A CN201811296189 A CN 201811296189A CN 111129708 B CN111129708 B CN 111129708B
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- China
- Prior art keywords
- terminal
- antenna
- mobile phone
- metal
- antenna radiator
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- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/12—Supports; Mounting means
- H01Q1/22—Supports; Mounting means by structural association with other equipment or articles
- H01Q1/24—Supports; Mounting means by structural association with other equipment or articles with receiving set
- H01Q1/241—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM
- H01Q1/242—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use
- H01Q1/243—Supports; Mounting means by structural association with other equipment or articles with receiving set used in mobile communications, e.g. GSM specially adapted for hand-held use with built-in antennas
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- 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
Abstract
The application discloses a terminal protection device, which is used for improving antenna performance reduction caused by the influence of a device externally arranged on a terminal on the frequency offset of a terminal antenna. The application provides a pair of terminal protection device, including the shell that is used for surrounding the terminal, be provided with on the shell and be used for compensating the part of the antenna frequency offset of terminal, work as the device surrounds when the terminal, the part with the antenna radiation body and the ground connection metal part at terminal form electric capacity.
Description
Technical Field
The application relates to the technical field of antenna devices of communication equipment, in particular to a terminal protection device.
Background
With the continuous development of smart phone technology, the metal appearance material, the glass appearance material and the large screen occupation whole machine design become the mainstream form of the current mobile phone design due to the unique appearance and texture. Meanwhile, the use cost of the consumers is improved due to the defects of easy flower hanging and easy breakage of the appearance brought by the designs. Terminal manufacturers are always dedicated to improving the related materials, but the improvement cannot be solved at present. Therefore, most consumers will add personalized mobile phone protective cases after purchasing mobile phones.
Due to the spatial radiation characteristic of the antenna, the working frequency is related to the dielectric constant of the metal substance of the nearby antenna part. Due to the increase of the protective sleeve of the mobile phone, particularly, the frequency offset generated on the antenna in the model of taking the metal casing as the antenna radiator is inevitably influenced, and the antenna is reduced in certain performance.
In the current design of the mobile phone, the nonmetal mobile phone cover can affect all full-band antennas of the mobile phone by 1-5 dB. Under the condition that the performance of the mobile phone antenna is continuously reduced due to the fact that the design difficulty of the mobile phone antenna is continuously increased, the influence of the mobile phone cover on the performance of the antenna is gradually paid attention to by mainstream mobile phone manufacturers at present so as to reduce the influence to the greatest extent by locally thinning or slotting the antenna radiation field intensity area on the non-metal mobile phone cover, but no effective solution still exists for the corresponding influence. Each manufacturer also invests much effort in the associated new design.
Disclosure of Invention
The embodiment of the application provides a terminal protection device, which is used for improving the antenna performance reduction caused by the influence of a device externally arranged on a terminal on the frequency offset of a terminal antenna.
The terminal protection device provided by the embodiment of the application comprises:
the device comprises a shell used for surrounding the terminal, wherein a component used for compensating the antenna frequency offset of the terminal is arranged on the shell, and when the device surrounds the terminal, the component and an antenna radiator and a grounding metal part of the terminal form a capacitor.
Through the device, including the shell that is used for surrounding the terminal, be provided with on the shell and be used for compensating the antenna frequency offset's of terminal part, when the device surrounds when the terminal, part with the antenna radiation body and the ground connection metal part of terminal form the electric capacity for improve the device of external terminal and to the antenna performance reduction that terminal antenna frequency offset influence caused.
Optionally, the component is a metal component.
Optionally, when the antenna radiator is located on the terminal frame, the component is located on the frame of the housing and is parallel to and opposite to the antenna radiator and the ground metal portion of the terminal.
Optionally, when the antenna radiator is located on the back cover of the terminal, the component is located on the back shell of the housing and is parallel to and opposite to the antenna radiator and the ground metal portion of the terminal.
Optionally, the antenna radiator and the ground metal portion are isolated by a non-metallic material located in a central region of an orthographic projection of the component on the terminal.
Optionally, the position of the component on the housing and the size of the orthographic projection of the component on the terminal are determined in advance according to the antenna frequency offset of the terminal.
Optionally, a plurality of said components are included.
Optionally, the plurality of components are located on the same side or different sides of the antenna radiator and the ground metal portion of the terminal, respectively.
The terminal protection device provided by the embodiment of the application has the following beneficial effects: the antenna performance reduction caused by the influence of the device externally arranged on the terminal on the frequency offset of the terminal antenna is improved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
Fig. 1 is a schematic diagram of a design of a mobile phone with a metal frame according to an embodiment of the present disclosure;
fig. 2 is a schematic diagram of a handset cover design provided in the present embodiment;
fig. 3 is a schematic diagram of a terminal protection device according to an embodiment of the present application;
fig. 4 is a schematic diagram of a terminal protection device according to an embodiment of the present application;
fig. 5 is a schematic diagram of a terminal protection device according to an embodiment of the present application;
fig. 6 is a schematic design diagram of a mobile phone case with multiple metal parts according to an embodiment of the present application.
Detailed Description
In the design of mobile terminals such as the existing mobile phones, the non-mobile phone cover causes frequency offset influence on the mobile phone antenna, and mainstream mobile phone manufacturers mainly reduce the influence to the greatest extent by locally thinning or slotting the antenna radiation field intensity area on the non-mobile phone cover, but the corresponding influence still exists and no effective solution is available.
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The embodiment of the application provides a terminal protection device, which is used for improving the antenna performance reduction caused by the influence of a mobile phone cover on the frequency offset of a mobile phone antenna.
Various embodiments of the present application will be described in detail below with reference to the accompanying drawings. It should be noted that the display sequence of the embodiment of the present application only represents the sequence of the embodiment, and does not represent the merits of the technical solutions provided by the embodiments.
After the mobile phone cover is added to the mobile phone terminal, the working frequency of the antenna
Where f is the antenna operating frequency, f0Is the initial operating frequency of the antenna, epsilon and epsilon0Respectively, the dielectric constant of the mobile phone case and the initial dielectric constant (such as air), so that the change of epsilon can bring about the change of frequency, and generally, the working frequency after the mobile phone case is added is lower than the initial frequency. That is to say, after the mobile phone cover is added, the mobile phone antenna generates frequency offset due to the dielectric constant, the larger the dielectric constant of the mobile phone cover is, the larger the frequency offset generated by the antenna is, and the frequency offset opposite to the influence of the mobile phone cover needs to be generated to correct the negative influence of the mobile phone cover on the signal.
Working frequency LC (2 pi f) of antenna2Where L and C are the equivalent capacitance and the equivalent inductance of the antenna, respectively, based on the reference ground, and f is the operating frequency, the equivalent capacitance C of the antenna to the reference ground changes, the equivalent inductance L does not change, and the corresponding operating frequency also changes. Since both L and C have imaginary parts, the position of the metal parts on the handset cover and the size of the front projection at the handset terminal need to be determined by combining the changing trend of the antenna self-impedance on the smith chart.
The embodiment of the application provides a metal part arranged on a mobile phone case as an additional aid for designing a mobile phone antenna, the metal part is parallel and opposite to an antenna radiator and a grounding metal part of a mobile phone terminal, the metal part, the antenna radiator and the grounding metal part of the mobile phone terminal are isolated through a slot, the slot is made of a non-metal material, one part of the metal part on the mobile phone case is close to the antenna radiator, and the other part of the metal part on the mobile phone case is close to the grounding metal part. The metal part on the mobile phone cover has capacitance with the mobile phone antenna radiator and the grounding metal part respectively, that is, the mobile phone antenna radiator and the grounding metal part have medium capacitive effect.
The antenna radiator of the mobile phone terminal is positioned on the mobile phone metal frame or the mobile phone metal back cover, and if the antenna radiator is positioned on the mobile phone metal frame, the metal part is positioned on the mobile phone sleeve frame at a position parallel and opposite to the mobile phone antenna radiator and the grounding metal part; and if the antenna radiator is positioned on the metal back cover of the mobile phone, the metal part is positioned on the back shell of the mobile phone cover and is parallel and opposite to the antenna radiator of the mobile phone and the grounding metal part. The position of the metal part on the mobile phone cover and the orthographic projection size of the metal part on the mobile phone terminal are determined in advance according to the antenna frequency offset of the mobile phone terminal. The capacitance value of the mobile phone antenna to the reference ground is determined by the area and the distance of the metal part on the mobile phone cover relative to the radiating body of the mobile phone terminal antenna, and the capacitance value of the mobile phone antenna to the reference ground is determined by the area and the distance of the metal part relative to the grounding metal part. The number of the metal parts on the mobile phone cover can be 1 or more, if only 1 metal part is arranged on the mobile phone cover, the influence of the frequency offset of the mobile phone cover on the mobile phone antenna due to the dielectric constant is not enough to be compensated, and a plurality of metal parts can be added on the mobile phone cover. When the mobile phone cover is provided with a plurality of metal parts, the metal parts are respectively positioned on the same side or different sides of the antenna radiator and the grounding metal part of the mobile phone terminal.
The metal component changes the self-impedance of the antenna to compensate the influence of the frequency offset of the mobile phone case on the antenna due to the dielectric constant. That is to say, by increasing the capacitive conduction between the metal component and the reference ground, the capacitive parameters between the antenna and the reference ground are changed to change the frequency of the antenna, so as to offset the frequency offset influence of the mobile phone cover on the mobile phone antenna.
The following detailed description of embodiments of the present application will be made with reference to the accompanying drawings.
Referring to fig. 1, a schematic design diagram of a mobile phone with a metal frame provided in the embodiment of the present application includes mobile phone metal frames 10 and 11, and slots 12 and 13; due to the design of the mobile phone antenna, the metal frames 10 and 11 are isolated by the slits 12 and 13, the slits 12 and 13 are non-metal materials, wherein the metal frame 11 is an antenna radiator, and the metal frame 10 is connected with the metal plate of the reference ground of the whole mobile phone and becomes a metal part with the connection reference ground.
Referring to fig. 2, a design schematic diagram of a mobile phone case provided in the embodiment of the present application includes a protection device 20 externally disposed on a mobile phone, and metal parts 21 and 22 disposed in a slot projection area of the mobile phone on the protection device 20, where the metal parts 21 and 22 respectively cross over a slot of a mobile phone terminal, and have parallel portions with an antenna radiator and a grounding metal portion of the mobile phone terminal.
Referring to fig. 3, an exemplary diagram of a terminal protection device provided in an embodiment of the present application includes:
a casing (not shown in the drawings, corresponding to the protection device 20 in fig. 2) for enclosing the terminal, on which casing parts 33 and 34 for compensating for the antenna frequency offset of the terminal are provided, which parts form capacitances with the antenna radiator 31 and the ground metal part 30 of the terminal when the device encloses the terminal.
The metal part 33 of the handset cover has a capacitive effect with the antenna radiator 31 and the ground metal part 30, respectively, and the metal part 34 has a capacitive effect with the antenna radiator 31 and the ground metal part 30, respectively.
Optionally, the parts 33 and 34 are metal parts.
For example, the metal component may be a metal trace or a sheet metal. The metal parts may be grounded or ungrounded (independently floating).
Optionally, when the antenna radiator is located on the terminal frame, the component is located on the frame of the housing and is parallel to and opposite to the antenna radiator and the ground metal portion of the terminal.
For example, when the antenna radiator 31 is located on the frame of the mobile phone terminal, the metal parts 33 and 34 are located on the frame of the mobile phone case and are parallel and opposite to the antenna radiator 31 and the grounding metal part 30 of the mobile phone terminal, and the metal parts 33 and 34 respectively cross and are close to the two slots.
Optionally, when the antenna radiator is located on the back cover of the terminal, the component is located on the back shell of the housing and is parallel to and opposite to the antenna radiator and the ground metal portion of the terminal.
For example, when the antenna radiator 51 is located at the back cover of the mobile phone terminal, the handset cover metal part 52 is parallel-opposed to the antenna radiator 51 and the ground metal part 53 of the mobile phone terminal.
Optionally, the antenna radiator and the ground metal portion are isolated by a non-metallic material located in a central region of an orthographic projection of the component on the terminal.
For example, the antenna radiator of the mobile phone terminal and the grounding metal part are isolated by the non-metallic material, and the non-metallic material is located in the center area of the orthographic projection of the metal part on the mobile phone terminal, that is, the slit position of the mobile phone terminal is located in the center area of the orthographic projection of the metal part on the mobile phone terminal.
Optionally, the position of the component on the housing and the size of the orthographic projection of the component on the terminal are determined in advance according to the antenna frequency offset of the terminal.
For example, the position of the metal component on the mobile phone case and the size of the orthographic projection of the metal component on the mobile phone terminal are determined in advance according to the antenna frequency offset of the mobile phone terminal. The relative area and distance between the metal part and the antenna radiator determine the change of the antenna capacitance value, and the relative area and distance between the metal part and the grounding metal part determine the change of the antenna capacitance value.
For example, when the component is a metal wire, the orthographic projection size of the component includes the length and thickness of the metal wire.
Optionally, a plurality of said components are included.
For example, only one metal part is added to the mobile phone cover, and the frequency offset generated by the metal part is not enough to correct the influence of the mobile phone cover, then one metal part or two metal parts can be added to the mobile phone cover, and the frequency offset influence of the mobile phone cover on the antenna is corrected through a plurality of metal parts.
Optionally, the plurality of components are located on the same side or different sides of the antenna radiator and the ground metal portion of the terminal, respectively.
In fig. 3, the metal frame mobile phone is taken as an example, and includes a grounded metal frame portion 30, an antenna radiator 31 isolated by a slit, a signal source 32 for conducting feed, and metal parts 33 and 34 disposed in the mobile phone case, where the metal parts 33 and 34 are close to and cross over the two slits, and have parallel portions with the grounded metal frame portion 30 and the antenna radiator 31, respectively. The grounding metal frame part 30 is connected with the alloy plate inside the mobile phone and is used as the reference grounding metal of the whole mobile phone. The metal parts 33 and 34 form capacitances with the antenna radiator 31 and the grounded metal frame part 30, respectively.
Referring to fig. 4, a schematic diagram of a principle of a terminal protection device provided in this embodiment of the present application, taking a metal-frame mobile phone as an example, includes an antenna radiator 41 located on a metal frame, a signal source 42, grounded metal frame portions 45 and 46, and metal parts 43 and 44 of a mobile phone case, where the metal part 43 spans the antenna radiator 41 and the grounded metal frame portion 45, the metal part 44 spans the antenna radiator 41 and the grounded metal frame portion 46, and the antenna radiator 41 is conducted by feeding of the signal source 42. When the mobile phone case has no metal parts 43 and 44, the antenna radiator 41 and the grounded metal frame parts 45 and 46 respectively have capacitances C1 and C3; when the mobile phone case has metal parts 43 and 44, equivalent capacitances C2 and C4 are added to the ground by the antenna radiator 41 and the grounded metal frame parts 45 and 46, respectively, that is, the antenna radiator takes the metal part as a medium to generate an additional equivalent capacitance with the grounded metal frame part on the other side of the slot. The antenna radiator 41 has equivalent capacitances C1+ C2, C3+ C4 with the grounded metal bezel sections 45 and 46, respectively. According to the formula LC (2 pi f)2As can be known from fig. 1, after the metal parts 43 and 44 are added to the handset cover, the capacitance of the handset terminal with respect to the ground is changed, and the inductance is not changed, so that the operating frequency of the handset antenna is changed.
Alternatively, the antenna radiator may be located on the back cover of the terminal, and the components on the housing are located on the back shell of the housing and in parallel opposition to the antenna radiator and the ground metal portion of the terminal.
For example, referring to fig. 5, a schematic diagram of a terminal protection device further provided in the embodiment of the present application is shown, in which a three-section metal back cover mobile phone is taken as an example, in the upper half of the mobile phone, a transverse slit is formed to cut the metal back cover into an upper antenna radiator 51 and a lower metal back cover reference ground 53, the metal back cover reference ground 53 is a mobile phone grounding metal portion, and the slit is made of a non-metal material. The metal part 52 is designed to be added in the projection area at the slit, the metal part 52 is parallel and opposite to the antenna radiator 51 and the metal back cover reference ground 53 of the mobile phone terminal, a part of the metal part 52 is close to the antenna radiator part 51, and a part of the metal part is close to the metal back cover reference ground 53. The metal part 52 has a capacitance with the antenna radiator 51 and the metal back cover reference ground 53, respectively, i.e. the antenna radiator 51 has a dielectric capacitive effect with respect to the metal back cover reference ground 53.
Referring to fig. 6, in a design diagram of a mobile phone case with multiple metal parts provided in this embodiment of the present application, if only one metal part is added to the projection area at the slit, for example, only the metal part 62 is added, frequency offset generated by the metal part is not enough to correct the influence generated by the mobile phone case, multiple metal parts may be added to the projection area at the slit, for example, the metal part 63 is added to the slit, and the multiple metal parts may be located on the same side or different sides of the mobile phone antenna radiator 61 and the ground metal part 64, respectively. Two metal parts 62 and 63 are added at a slot, and the two metal parts are respectively located on the same side of the antenna radiator 61 and the ground metal part 64 of the mobile phone, for example, the metal part 62 is located on the frame of the mobile phone case at the position right opposite to the slot, and the metal part 63 is located on the back of the mobile phone case at the position close to the slot, as long as it is possible to surround the slot. By these two metal parts, the correction effect can be enhanced. Similarly, at other slots, a metal part opposite to the slot can be arranged on the mobile phone cover to enhance the capacitance between the antenna radiator of the terminal and the grounding metal part of the antenna. And will not be described in detail herein.
The purpose of the embodiment of the application is to influence the antenna self-impedance through the change of the capacitance value of the mobile phone antenna to the reference ground, so that the generated frequency deviation can counteract the frequency deviation brought by the dielectric constant of the mobile phone cover to the antenna frequency, and the performance of the antenna is ensured to be reduced in an amplitude as small as possible compared with the performance of a free space.
In summary, according to the terminal protection device provided in the embodiment of the present application, the metal component is added to the mobile phone cover, and the capacitive parameter between the terminal antenna and the reference ground is changed to change the frequency of the terminal antenna, so as to offset the frequency offset influence on the antenna caused by the mobile phone cover, and improve the antenna performance degradation caused by the frequency offset influence on the antenna caused by the mobile phone cover.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (6)
1. A terminal protection device comprises a shell used for surrounding a terminal, and is characterized in that a component used for compensating antenna frequency offset of the terminal is arranged on the shell, the component is a metal component, and when the device surrounds the terminal, the component and an antenna radiator and a grounding metal part of the terminal form a capacitor;
the antenna radiator and the ground metal part are isolated through a slot, and the position of the slot is made of a non-metal material; the part is parallel and opposite to the antenna radiator and the grounding metal part of the terminal, one part of the part is close to the antenna radiator of the terminal, and the other part of the part is close to the grounding metal part of the terminal; the component has projections on both the antenna radiator and the grounded metal part to realize electromagnetic coupling; the position of the component on the shell and the orthographic projection size of the component on the terminal are determined in advance according to the antenna frequency deviation of the terminal.
2. The apparatus of claim 1, wherein the member is located on a bezel of the housing and is parallel to and opposite the antenna radiator and ground metal portion of the terminal when the antenna radiator is located on the bezel of the terminal.
3. The apparatus of claim 1, wherein the component is located on a back shell of the housing and in parallel opposition to an antenna radiator and a grounded metal portion of the terminal when the antenna radiator is located on a back cover of the terminal.
4. The apparatus of claim 1, wherein the antenna radiator and the grounded metal portion are insulated by a non-metallic material located in a central region of an orthographic projection of the component on the terminal.
5. A device according to any one of claims 1 to 4, comprising a plurality of said members.
6. The apparatus of claim 5, wherein the plurality of components are located on the same side or different sides of the antenna radiator and ground metal portion of the terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296189.8A CN111129708B (en) | 2018-11-01 | 2018-11-01 | Terminal protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811296189.8A CN111129708B (en) | 2018-11-01 | 2018-11-01 | Terminal protection device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111129708A CN111129708A (en) | 2020-05-08 |
| CN111129708B true CN111129708B (en) | 2021-10-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811296189.8A Active CN111129708B (en) | 2018-11-01 | 2018-11-01 | Terminal protection device |
Country Status (1)
| Country | Link |
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| CN (1) | CN111129708B (en) |
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| EP2930786A3 (en) * | 2014-04-09 | 2016-01-13 | Samsung Electronics Co., Ltd | Antenna and electronic devices comprising the same |
| CN106299608A (en) * | 2016-09-30 | 2017-01-04 | 努比亚技术有限公司 | A kind of band spreading structure of terminal antenna |
| CN205882167U (en) * | 2015-09-08 | 2017-01-11 | 苹果公司 | Construct mating electronic equipment of removing shell with electronic equipment |
| CN106384870A (en) * | 2016-09-30 | 2017-02-08 | 努比亚技术有限公司 | Terminal antenna frequency band extension structure |
| CN106450676A (en) * | 2016-09-30 | 2017-02-22 | 努比亚技术有限公司 | Protective shell |
| CN106887699A (en) * | 2017-03-30 | 2017-06-23 | 努比亚技术有限公司 | A kind of antenna structure and mobile terminal |
| CN108682957A (en) * | 2018-04-03 | 2018-10-19 | 歌尔科技有限公司 | A kind of mobile terminal and its antenna |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101753649A (en) * | 2008-11-28 | 2010-06-23 | Lg电子株式会社 | Mobile terminal |
| CN103780716A (en) * | 2012-10-17 | 2014-05-07 | 邓志浩 | Method for enhancing mobile phone signals and structure thereof |
| EP2930786A3 (en) * | 2014-04-09 | 2016-01-13 | Samsung Electronics Co., Ltd | Antenna and electronic devices comprising the same |
| CN104301463A (en) * | 2014-09-29 | 2015-01-21 | 广东欧珀移动通信有限公司 | Mobile phone system, mobile phone case and mobile phone |
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| CN106299608A (en) * | 2016-09-30 | 2017-01-04 | 努比亚技术有限公司 | A kind of band spreading structure of terminal antenna |
| CN106384870A (en) * | 2016-09-30 | 2017-02-08 | 努比亚技术有限公司 | Terminal antenna frequency band extension structure |
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| CN108682957A (en) * | 2018-04-03 | 2018-10-19 | 歌尔科技有限公司 | A kind of mobile terminal and its antenna |
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| Publication number | Publication date |
|---|---|
| CN111129708A (en) | 2020-05-08 |
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Address after: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee after: Qingdao Hisense Mobile Communication Technology Co.,Ltd. Address before: 266071 Shandong city of Qingdao province Jiangxi City Road No. 11 Patentee before: HISENSE MOBILE COMMUNICATIONS TECHNOLOGY Co.,Ltd. |
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