CN107959105B - Mobile terminal - Google Patents
Mobile terminal Download PDFInfo
- Publication number
- CN107959105B CN107959105B CN201711191314.4A CN201711191314A CN107959105B CN 107959105 B CN107959105 B CN 107959105B CN 201711191314 A CN201711191314 A CN 201711191314A CN 107959105 B CN107959105 B CN 107959105B
- Authority
- CN
- China
- Prior art keywords
- sim card
- card holder
- pcb
- feed pin
- mobile terminal
- 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.)
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- 230000002093 peripheral effect Effects 0.000 claims abstract description 31
- 239000002184 metal Substances 0.000 claims abstract description 11
- 238000005476 soldering Methods 0.000 claims 2
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- LAXBNTIAOJWAOP-UHFFFAOYSA-N 2-chlorobiphenyl Chemical compound ClC1=CC=CC=C1C1=CC=CC=C1 LAXBNTIAOJWAOP-UHFFFAOYSA-N 0.000 description 7
- 101710149812 Pyruvate carboxylase 1 Proteins 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000004891 communication Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000005855 radiation Effects 0.000 description 3
- 230000000191 radiation effect Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 101700004678 SLIT3 Proteins 0.000 description 1
- 102100027339 Slit homolog 3 protein Human genes 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 230000009977 dual effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 230000035800 maturation Effects 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/44—Details of, or arrangements associated with, antennas using equipment having another main function to serve additionally as an antenna, e.g. means for giving an antenna an aesthetic aspect
-
- 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
-
- 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
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Support Of Aerials (AREA)
Abstract
The invention discloses a mobile terminal, which comprises a PCB and a metal SIM card holder, wherein a WIFI radio frequency circuit and a feed pin are arranged on the PCB, and the feed pin is connected with the WIFI radio frequency circuit; the SIM card holder comprises a peripheral frame, a first gap is formed in the peripheral frame, the feed pin is welded to the PCB at a position corresponding to the first gap, and the feed pin is in contact with one side edge of the first gap. The invention sets a slit on the peripheral frame of the prior SIM card holder, and connects the SIM card holder with the WIFI radio frequency circuit through the feed pin, the SIM card holder can be used as an antenna radiator of the WIFI antenna while keeping the original function of the SIM card holder, that is, the WIFI antenna is integrated on the SIM card holder, so that other spaces of the mobile terminal are not occupied, other components are not additionally arranged, the occupied space of the WIFI antenna is greatly saved, and the production cost is reduced.
Description
Technical Field
The invention relates to the technical field of mobile communication, in particular to a mobile terminal.
Background
With further maturation, popularization and application of new generation wireless communication technologies such as LTE (4G), 802.11a/b/G/n, wireless communication functions integrated on a mobile terminal are more and more, so the number of antennas is more and more: from no more than 3 antennas (2G &3G antennas, GPS antennas, WIFI & BT antennas, etc.) in the 3G age to 5 or more antennas (2G &3G &4G antennas, 2G &3G &4G diversity antennas, GPS antennas, WIFI antennas 1, WIFI antennas 2, dual card GSM antennas, etc.) in the 4G age. These antennas need to be commonly arranged on the mobile terminal, and the existing mobile terminal needs to meet the requirements of large screen, large battery capacity and the like, so that the functional modules of the mobile terminal are very crowded, and therefore, the settable area of the antenna is also greatly limited, which becomes a great challenge in antenna design.
In order to save antenna space, the current common practice is to make the WIFI antenna and the GPS antenna into a two-in-one mode, and although the scheme can save certain space, partial performances of the WIFI antenna and the GPS antenna can be sacrificed, and the WIFI antenna can only deviate to the GPS or the WIFI, so that compatibility is difficult to achieve, and wireless Internet surfing experience or navigation experience of a client is not ideal. Therefore, new ideas need to be proposed to solve the existing antenna design problem.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the mobile terminal can save the occupied space of the WIFI antenna and solve the design difficulty of the antenna in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the mobile terminal comprises a PCB and a metal SIM card holder, wherein a WIFI radio frequency circuit and a feed pin are arranged on the PCB, and the feed pin is connected to the WIFI radio frequency circuit; the SIM card holder comprises a peripheral frame, a first gap is formed in the peripheral frame, the feed pin is welded to the PCB at a position corresponding to the first gap, and the feed pin is in contact with one side edge of the first gap.
The invention has the beneficial effects that: in the existing mobile terminal, the SIM card holder for carrying the SIM card and the WIFI antenna are all indispensable components for realizing wireless communication, and the invention is provided with slits on the peripheral frame of the existing SIM card holder, and the SIM card holder is connected with the WIFI radio frequency circuit through the feed pin, and can be used as an antenna radiator of the WIFI antenna while retaining the original functions of the SIM card holder, that is, the invention integrates the WIFI antenna on the SIM card holder, so that other spaces of the mobile terminal are not occupied, other components are not additionally arranged, the occupied space of the WIFI antenna is greatly saved, and the production cost is reduced.
Drawings
Fig. 1 is a schematic diagram of an internal structure of a mobile terminal according to a first embodiment of the present invention;
fig. 2 is a topology diagram of a filter circuit according to a first embodiment of the present invention;
fig. 3 is a schematic circuit diagram of a WIFI antenna according to a first embodiment of the invention;
fig. 4 is an S11 parameter diagram of a WIFI antenna according to an embodiment of the invention;
fig. 5 is a radiation efficiency diagram of a WIFI antenna according to a first embodiment of the invention;
fig. 6 is a schematic diagram of an internal structure of a mobile terminal according to a second embodiment of the present invention;
description of the reference numerals:
1. a PCB board; 2. a peripheral rim; 3. a first slit; 4. a feed pin; 5. a middle cross beam;
6. and a second slit.
Detailed Description
In order to describe the technical contents, the achieved objects and effects of the present invention in detail, the following description will be made with reference to the embodiments in conjunction with the accompanying drawings.
The most key concept of the invention is that a first gap 3 is arranged on a SIM card holder, a feed pin 4 is arranged on a position, corresponding to the first gap 3, of a PCB 1, and the SIM card holder is communicated with a WIFI radio frequency circuit and a matching circuit on the PCB 1 by contacting the feed pin 4.
Referring to fig. 1, a mobile terminal includes a PCB board 1 and a metal SIM card holder, wherein a WIFI radio frequency circuit and a feeding pin 4 are disposed on the PCB board 1, and the feeding pin 4 is connected to the WIFI radio frequency circuit; the SIM card holder comprises a peripheral frame 2, a first gap 3 is formed in the peripheral frame 2, the feed pin 4 is welded to the PCB 1 at a position corresponding to the first gap 3, and the feed pin 4 is in contact with one side edge of the first gap 3.
The working principle of the invention is as follows: radio frequency signals sent by a WIFI radio frequency circuit on a PCB board are excited through a feed pin 4, a peripheral frame 2 of a SIM card holder can be used as a WIFI antenna radiator to radiate, two sides of a first slit are respectively used as a starting end and a terminating end of the antenna radiator, the length of the peripheral frame 2 through which radio frequency current flows meets the resonance length of the WIFI antenna, and therefore the WIFI antenna and the SIM card holder are integrated together.
From the above description, the beneficial effects of the invention are as follows: in the existing mobile terminal, the SIM card holder and the WIFI antenna for bearing the SIM card are all indispensable components for realizing wireless communication, and the invention is provided with slits on the peripheral frame 2 of the existing SIM card holder, and the SIM card holder is connected with the WIFI radio frequency circuit through the feed pin, and can be used as an antenna radiator of the WIFI antenna while retaining the original functions of the SIM card holder, that is, the invention integrates the WIFI antenna on the SIM card holder, so that other spaces of the mobile terminal are not occupied, other components are not additionally arranged, the occupied space of the WIFI antenna is greatly saved, and the production cost is reduced.
Further, the first slit 3 on the peripheral frame 2 is disposed near the edge of the PCB board 1.
It can be seen from the above description that, when the peripheral frame is used as the WIFI antenna radiator, one side edge of the first slot, which contacts with the feed pin, is the starting end of the WIFI antenna radiator, and the other side edge is the terminating end of the WIFI antenna radiator, and the first slot is disposed at a position close to the edge of the PCB, that is, the starting end and the terminating end of the WIFI antenna radiator are disposed close to the edge, so that, on one hand, interference of other elements inside the PCB to the WIFI antenna can be avoided, and on the other hand, the WIFI antenna can have better radiation effect.
Further, the peripheral frame 2 is rectangular, the rectangle includes two first corners close to the edge of the PCB board 1 and two second corners far away from the edge of the PCB board 1, and the gap is disposed at the first corners.
From the above description, the first slot is formed at the corner of the outer side of the SIM card holder, so that the good radiation effect of the WIFI antenna can be ensured, and the aesthetic degree of the SIM card holder is not damaged.
Further, the circuit also comprises a matching circuit, wherein the matching circuit is arranged on the PCB 1 and is connected between the WIFI radio frequency circuit and the feed pin 4.
As can be seen from the above description, the resonance frequencies generated by the SIM card holders with different sizes are different, and the matching circuit can adjust the antenna to match, so as to fine tune the resonance frequency of the SIM card holder to achieve the required resonance length of the antenna.
Further, the circuit also comprises a filter circuit, wherein the filter circuit is arranged on the PCB 1 and is connected between the feed pin 4 and the matching circuit or between the matching circuit and the WIFI radio frequency circuit.
As can be seen from the above description, the filtering circuit can better filter the clutter signals generated by the SIM card.
Further, the SIM card holder further includes a middle cross beam 5, where the middle cross beam 5 is disposed in the peripheral frame 2, and two ends of the middle cross beam 5 are connected to the peripheral frame 2; the middle cross beam 5 is provided with a second gap 6.
According to the description, the middle cross beam can play a better supporting role on the SIM card holder, and meanwhile, the middle cross beam is provided with the second gap, that is to say, the middle cross beam is provided with the break point, so that radio frequency current cannot flow from the middle cross beam, only can flow along the peripheral frame, the resonant length of the antenna radiator is ensured to be long enough, and the requirement of the WIFI antenna is met.
Further, the size of the SIM card holder is 30mm to 15mm.
From the above description, the SIM card holder with the size is a common SIM card holder, and the SIM card holder with the size can better meet the requirement of the WIFI antenna.
Further, the feeding pin 4 is a metal spring plate, the metal spring plate includes a welding surface and an elastic contact surface, the welding surface is welded on the PCB board 1, and the elastic contact surface is in contact with the SIM card holder.
Example 1
Referring to fig. 1, a first embodiment of the present invention is as follows: a mobile terminal, such as a mobile phone, comprising a housing, a PCB board 1 and a metal SIM card holder, wherein the PCB board 1 can be a main board of the mobile terminal, the SIM card holder is used for carrying a SIM card, and the SIM card holder is slidably inserted in the housing.
Be provided with WIFI radio frequency circuit, matching circuit, filter circuit and feed pin 4 on the PCB board 1, WIFI radio frequency circuit, matching circuit, filter circuit and feed pin 4 link to each other in proper order, of course also can exchange matching circuit and filter circuit's position. The topology of the filter circuit is shown in fig. 2, and is a parallel structure of a capacitor and an inductor. The feed pin 4 is a metal spring plate, the metal spring plate comprises a welding surface and an elastic contact surface, and the welding surface is welded on the PCB 1.
The SIM card holder is a hollow frame structure, and the frame structure comprises a rectangular peripheral frame 2, and the size of the peripheral frame 2 is 30mm x 15mm. The peripheral frame 2 is provided with a first gap 3, the feed pin 4 is welded on the PCB 1 at a position corresponding to the first gap 3, and an elastic contact surface of the feed pin 4 is contacted with one side edge of the first gap 3. The SIM card holder is separated into a non-closed structure by the first slot 3, so that the SIM card holder can be used as a radiator of a WIFI antenna to radiate, one side of the first slot 3, which is in contact with the feed pin 4, is a starting end of the antenna radiator, and the other side naturally becomes a terminating end of the antenna radiator.
Preferably, the first slot 3 is formed at a position close to the edge of the PCB board 1, that is, the starting end and the terminating end of the WIFI antenna radiator are disposed at the edge of the mobile terminal, so that the WIFI antenna can be guaranteed to have a better radiation effect, and other elements inside the mobile terminal can be prevented from interfering with the WIFI antenna. The peripheral frame 2 comprises an inner side edge, an outer side edge, a left side edge and a right side edge, wherein the outer side edge is a side edge positioned outside the mobile terminal, the inner side edge is positioned inside the mobile terminal and is parallel to the outer side edge, the left side edge and the right side edge are connected between the inner side edge and the outer side edge, and the first slit is arranged at a corner where the outer side edge is connected with the left side edge or at a corner where the outer side edge is connected with the right side edge, so that the appearance of the SIM card holder is prevented from being influenced. After the SIM card holder is inserted into the shell, the feed pin 4 is contacted with the outer side edge. In this embodiment, the first slot 3 is disposed at a corner where the outer side edge and the right side edge are connected, the radio frequency signal of the WIFI antenna is excited by the feeding pin 4, and the radio frequency current sequentially passes through the outer side edge, the left side edge, the inner side edge and the right side edge to radiate the signal. The schematic circuit diagram of the WIFI antenna of this embodiment is shown in fig. 3, fig. 4 shows the S11 parameter of the WIFI antenna of this embodiment, fig. 5 shows the radiation efficiency of the WIFI antenna, and it can be seen from fig. 4 and fig. 5 that the WIFI antenna has a better S11 parameter in the designed frequency band, and meanwhile, the antenna also has a good radiation efficiency.
Example two
Referring to fig. 6, the second embodiment is different from the first embodiment in that: the SIM card holder further comprises a middle cross beam 5, wherein the middle cross beam 5 is arranged in the peripheral frame 2, and two ends of the middle cross beam 5 are connected with the peripheral frame 2; the middle cross beam 5 is provided with a second gap 6. The middle cross beam 5 can further strengthen the bearing capacity of the SIM card, and the second gap 6 is arranged on the middle cross beam 5, so that the cutting off of radio frequency current on the middle cross beam 5 can be avoided, the radio frequency current can only flow along the peripheral frame 2, and the resonance length of the WIFI antenna is ensured.
In summary, the mobile terminal provided by the invention can integrate the WIFI antenna on the SIM card holder, so that the original function of the SIM card holder is reserved, the occupied space of the WIFI antenna is reduced, and the layout difficulty of the existing antenna is solved.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent changes made by the specification and drawings of the present invention, or direct or indirect application in the relevant art, are included in the scope of the present invention.
Claims (5)
1. The mobile terminal comprises a PCB and a metal SIM card holder, and is characterized in that a WIFI radio frequency circuit and a feed pin are arranged on the PCB, and the feed pin is connected to the WIFI radio frequency circuit; the SIM card holder comprises a peripheral frame, a first gap is formed in the peripheral frame, the feed pin is welded on the PCB at a position corresponding to the first gap, and the feed pin is contacted with one side edge of the first gap; wherein, the first gap on the peripheral frame is arranged close to the edge of the PCB; the peripheral frame is rectangular, the rectangle comprises two first corners close to the edge of the PCB and two second corners far away from the edge of the PCB, and the gap is arranged at the first corners; the SIM card holder further comprises a middle cross beam, wherein the middle cross beam is arranged in the peripheral frame, and two ends of the middle cross beam are connected with the peripheral frame; and a second gap is formed in the middle cross beam.
2. The mobile terminal of claim 1, further comprising a matching circuit disposed on a PCB board, the matching circuit being connected between the WIFI radio frequency circuit and the feed pin.
3. The mobile terminal of claim 2, further comprising a filter circuit disposed on the PCB, the filter circuit connected between the feed pin and the matching circuit or between the matching circuit and the WIFI radio frequency circuit.
4. The mobile terminal of claim 1, wherein the SIM card holder has a size of 30mm x 15mm.
5. The mobile terminal of claim 1, wherein the feed pin is a metal spring, the metal spring comprises a soldering surface and an elastic contact surface, the soldering surface is soldered on the PCB, and the elastic contact surface is in contact with the SIM card holder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711191314.4A CN107959105B (en) | 2017-11-24 | 2017-11-24 | Mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711191314.4A CN107959105B (en) | 2017-11-24 | 2017-11-24 | Mobile terminal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107959105A CN107959105A (en) | 2018-04-24 |
| CN107959105B true CN107959105B (en) | 2024-03-19 |
Family
ID=61962374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711191314.4A Active CN107959105B (en) | 2017-11-24 | 2017-11-24 | Mobile terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107959105B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113571870B (en) * | 2021-07-09 | 2024-06-07 | 维沃移动通信有限公司 | Electronic equipment |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1189304A2 (en) * | 2000-09-19 | 2002-03-20 | Sony Corporation | Antenna device and radio communication card module having antenna device |
| KR20070017639A (en) * | 2005-08-08 | 2007-02-13 | 주식회사 팬택 | An antenna apparatus for local area wireless communications using a sim card fixing pin in a mobile communication terminal |
| KR20080052123A (en) * | 2006-12-06 | 2008-06-11 | (주)파트론 | Single unit antenna memory card |
| WO2009022387A1 (en) * | 2007-08-10 | 2009-02-19 | Panasonic Corporation | Portable wireless device |
| CN201266674Y (en) * | 2008-09-16 | 2009-07-01 | 深圳华为通信技术有限公司 | Antenna of terminal equipment |
| CN104701638A (en) * | 2015-03-31 | 2015-06-10 | 上海坤锐电子科技有限公司 | Highly shield SIM side-inserted cellphone all-card scheme antenna |
| CN207677067U (en) * | 2017-11-24 | 2018-07-31 | 深圳市信维通信股份有限公司 | A kind of mobile terminal |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102371219B1 (en) * | 2015-10-08 | 2022-03-07 | 삼성전자주식회사 | Tray device and electronic device having the same |
-
2017
- 2017-11-24 CN CN201711191314.4A patent/CN107959105B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1189304A2 (en) * | 2000-09-19 | 2002-03-20 | Sony Corporation | Antenna device and radio communication card module having antenna device |
| KR20070017639A (en) * | 2005-08-08 | 2007-02-13 | 주식회사 팬택 | An antenna apparatus for local area wireless communications using a sim card fixing pin in a mobile communication terminal |
| KR20080052123A (en) * | 2006-12-06 | 2008-06-11 | (주)파트론 | Single unit antenna memory card |
| WO2009022387A1 (en) * | 2007-08-10 | 2009-02-19 | Panasonic Corporation | Portable wireless device |
| CN201266674Y (en) * | 2008-09-16 | 2009-07-01 | 深圳华为通信技术有限公司 | Antenna of terminal equipment |
| CN104701638A (en) * | 2015-03-31 | 2015-06-10 | 上海坤锐电子科技有限公司 | Highly shield SIM side-inserted cellphone all-card scheme antenna |
| CN207677067U (en) * | 2017-11-24 | 2018-07-31 | 深圳市信维通信股份有限公司 | A kind of mobile terminal |
Non-Patent Citations (3)
| Title |
|---|
| A new secure SIM-card based RFID reader;Yiqun Xu 等;《2010 International Conference on Anti-Counterfeiting, Security and Identification》;全文 * |
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| Publication number | Publication date |
|---|---|
| CN107959105A (en) | 2018-04-24 |
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