CN201563142U - Portable terminal with electrostatic protection - Google Patents

Portable terminal with electrostatic protection Download PDF

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Publication number
CN201563142U
CN201563142U CN2009202621097U CN200920262109U CN201563142U CN 201563142 U CN201563142 U CN 201563142U CN 2009202621097 U CN2009202621097 U CN 2009202621097U CN 200920262109 U CN200920262109 U CN 200920262109U CN 201563142 U CN201563142 U CN 201563142U
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CN
China
Prior art keywords
signal
antenna
magnetic bead
processing chip
signal processing
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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.)
Expired - Lifetime
Application number
CN2009202621097U
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Chinese (zh)
Inventor
文冲
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.)
Huawei Device Co Ltd
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Shenzhen Huawei Communication Technologies Co Ltd
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Publication date
Application filed by Shenzhen Huawei Communication Technologies Co Ltd filed Critical Shenzhen Huawei Communication Technologies Co Ltd
Priority to CN2009202621097U priority Critical patent/CN201563142U/en
Application granted granted Critical
Publication of CN201563142U publication Critical patent/CN201563142U/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The utility model discloses a signal receiver with electrostatic protection in the embodiment, which can weaken the static electricity during in receiving a wireless signal, comprising an antenna, a signal processing chip and a magnetic bead; wherein, the antenna is used for receiving the wireless signal; the signal processing chip is used for receiving the wireless signal with the antenna and processing the wireless signal; when a static signal is conducted by the antenna, the magnetic bead is used for weakening the energy of the static signal. The utility model correspondingly provides a terminal device. The antenna and the signal processing chip are connected by the magnetic bead in series, thus greatly weakening the energy of the static signal and protecting the signal processing chip.

Description

A kind of portable terminal device with electrostatic defending
Technical field
The utility model relates to electrostatic discharge protection circuit, particularly a kind of electrostatic discharge protection circuit of antenna.
Background technology
At present, mobile phone, portable electronic device (MP3, Moving Picture Experts GroupAudio Layer III), personal digital assistant (PDA, Personal Digital Assistant) etc. all has frequency modulation (FM, frequency modulation) function of radio receiver on the terminal equipment.
Because the FM frequency range is at 87-107MHz, than the frequency range 800M of mobile communication, 900M is much lower, so that the FM antenna need be done is longer.Common built-in antenna for mobile phone can not be satisfied the demand, so in order to realize so FM function on mobile phone, then need load onto the FM antenna in addition on mobile phone.At present great majority comprise that the terminal equipment of mobile phone realizes the FM antenna function with earphone; The mobile phone that has adds telescopic antenna, can break away from earphone and listen the FM broadcast program, is with the mobile phone of touch screen function to utilize felt pen to listen to the FM broadcast program as telescopic antenna at some; Also having some mobile phones then is built-in FM antenna.Above-mentioned mode except built-in FM antenna all can be referred to as external FM antenna.
External FM antenna is found serious electrostatic problem in actual applications, particularly electrostatic test the time, when playing the FM broadcast program, facing to the discharge of FM antenna, problems such as noiseless, noise will occur, even may damage the FM chip.
At present, by at protective devices such as FM days line parallel TVS (Transient Voltage Suppression, transient voltage suppresses) device, piezo-resistances, utilize the voltage clamp function of protective device to eliminate static.Yet in order not influence the reception of FM signal, protective device herein has special requirement: the protective device junction capacitance is very little, protective device junction capacitance＜3pF, and satisfy the TVS of this requirement or piezo-resistance price all than higher.The protective device junction capacitance is more little in addition, and its barrier propterty is just poor more.So the use protective device carries out electrostatic protection effect in the FM antenna circuit not good enough.
The utility model content
The utility model embodiment provides a kind of signal receiving device with electrostatic defending, makes can weaken static when receiving wireless signal, comprises an antenna, a signal processing chip, a magnetic bead; Wherein, described antenna is used to receive wireless signal; Described signal processing chip is used to cooperate antenna to receive wireless signal, carries out wireless signal and handles; Described magnetic bead electrically connect and described antenna and described signal processing chip between, be used for giving described signal processing chip with wireless signal transfer; When an electrostatic signal when antenna imports, magnetic bead is used to weaken the energy of this electrostatic signal.
The utility model embodiment also provides a kind of terminal equipment, comprises an antenna, a signal processing chip, a magnetic bead; Wherein, described antenna is used to receive wireless signal; Described signal processing chip is used to cooperate antenna to receive wireless signal, carries out wireless signal and handles; Described magnetic bead electrically connect and described antenna and described signal processing chip between, be used for giving described signal processing chip with wireless signal transfer; When an electrostatic signal when antenna imports, magnetic bead is used to weaken the energy of this electrostatic signal.
Magnetic bead can weaken the energy of electrostatic signal greatly owing to connect between antenna and signal processing chip, thus the guard signal process chip.
Description of drawings
Fig. 1 is the utility model FM antenna electrostatic protection apparatus example structure schematic diagram;
Fig. 2 is the utility model FM antenna electrostatic protection apparatus embodiment circuit diagram;
Fig. 3 is the utility model mobile phone example structure schematic diagram;
Fig. 4 is the terminal equipment example structure schematic diagram that the utlity model has television receiving function
Embodiment
For the purpose, technical scheme and the advantage that make the utility model embodiment is clearer, below with reference to the accompanying drawing embodiment that develops simultaneously, embodiment is described in further detail to the utility model.
As shown in Figure 1, be the utility model FM antenna electrostatic protection apparatus example structure schematic diagram, Fig. 1 is example with felt pen as the FM antenna.In the reality, the FM antenna also can be external antennas such as other telescopic antenna or earphone.FM antenna electrostatic discharge protection circuit comprises felt pen 11, FM chip 12, magnetic bead 13.
Felt pen 11 is used to receive the FM signal as the FM antenna,
FM chip 12 is integrated FM radio reception receiving circuit, is used to cooperate felt pen 11 to receive the FM signal, promptly is used to search for the FM channel, selective reception FM signal, output audio signal.
Between magnetic bead 13 electrical connections and felt pen 11 and the FM chip 12, be used for the FM signal is passed to FM chip 12 from felt pen 11, when an electrostatic signal imported by felt pen 11, magnetic bead was used to weaken electrostatic energy.The magnetic bead size can be 600 ohm/100MHz, this numerical value can allow this protection circuit by+-the 8KV strength of discharge.The magnetic bead size of using in the side circuit is decided by concrete device.
Operation principle is as follows:
When receiving the FM broadcast program, felt pen 11 can receive the FM signal, and when the FM signal passed through felt pen 11 through magnetic beads 13, because the FM signal frequency is little, magnetic bead 13 was a low resistance for the FM signal, can not influence the reception of FM signal substantially.When electrostatic signal also was delivered to magnetic bead 13 by felt pen 11, because electrostatic signal frequency height, magnetic bead 13 was a high resistance for electrostatic signal, causes the electrostatic signal energy to weaken greatly, when arriving FM chip 12, had not had damage capability.So, this device just can pass through the FM signal, stops electrostatic signal.
By present embodiment as can be seen,, can effectively stop static, protection FM chip by magnetic bead of series connection between FM antenna and FM chip.
Be illustrated in figure 2 as the utility model FM antenna electrostatic protection apparatus embodiment circuit diagram.Present embodiment is that example is described with general telescopic antenna, and FM antenna electrostatic protection apparatus comprises 24, one coupling inductances 25 of 23, one coupling capacitances of 22, one magnetic beads of 21, one FM chips of a telescopic antenna.
Telescopic antenna 21 is used to receive the FM signal as the FM antenna.
FM chip 22 is integrated FM radio reception receiving circuit, is used to cooperate telescopic antenna 21 to receive the FM signal, specifically is used to search for the FM channel, and selective reception FM signal carries out the FM signal processing, output audio signal.
Magnetic bead 23 is electrically connected felt pens 11, is used to transmit the FM signal, when an electrostatic signal when telescopic antenna imports, magnetic bead is used to weaken electrostatic energy.The magnetic bead size is 600 ohm/100MHz, can pass through IEC61000-4-2, the level3 grade (atmospherical discharges+-8KV) test, if magnetic bead is increased to 1000 ohm/100MHz or bigger, this device is to pass through IEC61000-4-2, the level4 grade (atmospherical discharges+-15KV) test.In the practical application, visual physical circuit is selected the specification of magnetic bead.
Coupling capacitance 24 is electrically connected and connects magnetic bead 23 and FM chip 22, is used for the FM signal is passed to FM chip 22 from magnetic bead 23, through out-of-date, weakens electrostatic energy as electrostatic signal, and coupling capacitance 24 is mated the FM radio frequency parameter in circuit.2 pin of coupling capacitance 24 and FM chip 22 particularly, promptly the FMIP pin is connected.
Coupling inductance 25 1 ends be connected and magnetic bead 23 and telescopic antenna 21 between, other end ground connection, coupling FM radio frequency parameter in circuit.
In work, the FM signal receives by telescopic antenna 21, passes through magnetic bead 23 then, and coupling capacitance 24 finally arrives FM chip 22, and the FM chip carries out signal processing work then.Magnetic bead 23 is a kind of resistive elements, and along with the increase resistance of entering signal frequency should increase, can absorb electromagnetic interference on high frequency band.When FM signal process telescopic antenna 21, when entering into magnetic bead 23, the resistance of magnetic bead 23 performances has only tens ohm, because the 22 receiving terminal internal resistances of FM chip are very big, thus, the FM signal is through behind this circuit as can be known, and signal does not have decay substantially.
And when electrostatic signal arrived telescopic antenna 21, at this moment to be that input resistance compares less for 22 pairs of electrostatic signal of FM chip.Electrostatic signal can flow along the past FM chip 22 of circuit rapidly; when going to magnetic bead 23; magnetic bead 23 can show as hundreds of even last kilohm impedance; weaken the energy of electrostatic signal greatly; when the coupling capacitance 24, coupling capacitance 24 electrostatic signal that also can decay is when finally arriving FM chip 22; electrostatic signal has not had any damage capability, and FM chip 22 just has been protected like this.
From the foregoing description as can be seen, by can weakening the energy of electrostatic signal greatly in connect between FM antenna and the FM chip magnetic bead and coupling capacitance, thus protection FM chip.
As shown in Figure 3, being the structural representation of the utility model mobile phone embodiment, is that example describes with felt pen as the FM antenna in this enforcement.Mobile phone 30 comprises: felt pen 31, FM chip 32, magnetic bead 33, felt pen shell fragment 34.
FM chip 32 is integrated FM radio reception receiving circuit, is used to cooperate felt pen 31 to receive the FM signal, specifically is used to search for the FM channel, and selective reception FM signal is handled the FM signal, output audio signal.
Between magnetic bead 33 electrical connections and felt pen shell fragment 34 and the FM chip 32, be used for the FM signal is passed to FM chip 32, through felt pen, when the felt pen shell fragment imports, magnetic bead is used to weaken electrostatic energy as electrostatic signal.
Felt pen 31 is connected to form the FM antenna with felt pen shell fragment 34, is used to receive the FM signal.
FM chip 32 antenna inputs are connected on the felt pen shell fragment 34 through magnetic bead 33, and after felt pen 31 was inserted on the mobile phone 30, felt pen 31 contacted with felt pen shell fragment 34, form the FM antenna.Pass through felt pen 31 when electrostatic signal, felt pen shell fragment 34 reaches magnetic bead 33, because electrostatic signal frequency height, magnetic bead 33 is as resistive element, and the signal high to frequency shows as high resistance, has therefore weakened the energy of electrostatic signal; And the FM signal passes through felt pen 31, and felt pen shell fragment 34 reaches magnetic bead 33, because the FM signal frequency is little, magnetic bead 33 shows as low resistance, so the FM signal can continue to be sent to FM chip 32 places, carries out signal processing by the FM chip.
From the foregoing description as can be seen, by can weakening the energy of electrostatic signal greatly at the magnetic bead of connecting between FM antenna and the FM chip, thus protection FM chip.
Above embodiment has mainly described the electrostatic defending of FM antenna, and circuit structure of the present utility model can be used for having the terminal equipment of television receiving function, particularly as shown in Figure 4, equipment with television receiving function comprises: TV telescopic antenna 41, processing television signals chip 42, magnetic bead 43;
TV telescopic antenna 41 is used for received television signal;
Processing television signals chip 42 is used to cooperate TV telescopic antenna 41 received television signals, handles the TV signal that is received by TV telescopic antenna 42 particularly;
Magnetic bead 43 electrically connect and TV telescopic antenna 41 and processing television signals chip 42 between, be used for TV signal is passed to processing television signals chip 41 from TV telescopic antenna 41, when TV telescopic antenna 41 imported, magnetic bead was used to cut down the energy of electrostatic signal as electrostatic signal.
During concrete work, when electrostatic signal also is delivered to magnetic bead 43 by TV telescopic antenna 41, because electrostatic signal frequency height, magnetic bead 43 is a high resistance for electrostatic signal, consume the most energy of electrostatic signal, cause the electrostatic signal energy to weaken greatly, when arriving processing television signals chip 42, do not had damage capability.And TV signal is by telescopic antenna 41 during through magnetic beads 43, because TV signal frequency is little, magnetic bead 43 is a low resistance for TV signal, can not influence the reception of TV signal substantially.So, this device just can pass through TV signal, stops electrostatic signal.
More than lift preferred embodiment; the purpose of this utility model, technical scheme and advantage are further described; institute is understood that; the above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.

Claims (9)

1. the signal receiving device with electrostatic defending is characterized in that, comprises an antenna, a signal processing chip, a magnetic bead; Wherein,
Described antenna is used to receive wireless signal;
Described signal processing chip is used to cooperate antenna to receive wireless signal, carries out wireless signal and handles;
Described magnetic bead electrically connect and described antenna and described signal processing chip between, be used for giving described signal processing chip with wireless signal transfer; When an electrostatic signal when antenna imports, magnetic bead is used to weaken the energy of this electrostatic signal.
2. the signal receiving device with electrostatic defending according to claim 1 is characterized in that, described wireless signal is the FM signal, and signal processing chip is the FM chip; Or
Described wireless signal is a TV signal, and signal processing chip is the processing television signals chip.
3. the signal receiving device with electrostatic defending according to claim 1, it is characterized in that, the coupling capacitance of also connecting between described magnetic bead and the described signal processing chip, described coupling capacitance is used for wireless signal is passed to described signal processing chip by magnetic bead.
4. the signal receiving device with electrostatic defending according to claim 1 is characterized in that, described antenna is a telescopic antenna.
5. a terminal equipment is characterized in that, comprises an antenna, a signal processing chip, a magnetic bead; Wherein,
Described antenna is used to receive wireless signal;
Described signal processing chip is used to cooperate antenna to receive wireless signal, carries out wireless signal and handles;
Described magnetic bead electrically connect and described antenna and described signal processing chip between, be used for giving described signal processing chip with wireless signal transfer; When an electrostatic signal when antenna imports, magnetic bead is used to weaken the energy of this electrostatic signal.
6. terminal equipment according to claim 5 is characterized in that, described wireless signal is the FM signal, and signal processing chip is the FM chip; Or
Described wireless signal is a TV signal, and signal processing chip is the processing television signals chip.
7. terminal equipment according to claim 5 is characterized in that, the coupling capacitance of also connecting between described magnetic bead and the described signal processing chip, and described coupling capacitance is used for wireless signal is passed to described signal processing chip by magnetic bead.
8. terminal equipment according to claim 5 is characterized in that, described antenna is a telescopic antenna.
9. terminal equipment according to claim 5, it is characterized in that, described terminal equipment is a touch-screen mobile phone, described antenna is a felt pen, then further comprise a felt pen shell fragment, electrically connect signal processing chip through magnetic bead, described felt pen contacts described felt pen shell fragment, thereby, be connected with signal processing chip through magnetic bead.
CN2009202621097U 2009-12-28 2009-12-28 Portable terminal with electrostatic protection Expired - Lifetime CN201563142U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2009202621097U CN201563142U (en) 2009-12-28 2009-12-28 Portable terminal with electrostatic protection

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Application Number Priority Date Filing Date Title
CN2009202621097U CN201563142U (en) 2009-12-28 2009-12-28 Portable terminal with electrostatic protection

Publications (1)

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CN2009202621097U Expired - Lifetime CN201563142U (en) 2009-12-28 2009-12-28 Portable terminal with electrostatic protection

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103916147A (en) * 2014-03-28 2014-07-09 宁波萨瑞通讯有限公司 Method for enhancing ESD resistance of FM in digital electronic products
CN107565529A (en) * 2017-08-31 2018-01-09 广东欧珀移动通信有限公司 Electrostatic protection apparatus, radio circuit and electronic equipment
CN117394812A (en) * 2023-07-20 2024-01-12 荣耀终端有限公司 Terminal equipment and noise reduction circuit

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103916147A (en) * 2014-03-28 2014-07-09 宁波萨瑞通讯有限公司 Method for enhancing ESD resistance of FM in digital electronic products
CN103916147B (en) * 2014-03-28 2016-04-13 宁波萨瑞通讯有限公司 A kind of method strengthening FM against esd performance in digital electronic goods
CN107565529A (en) * 2017-08-31 2018-01-09 广东欧珀移动通信有限公司 Electrostatic protection apparatus, radio circuit and electronic equipment
CN117394812A (en) * 2023-07-20 2024-01-12 荣耀终端有限公司 Terminal equipment and noise reduction circuit

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Legal Events

Date Code Title Description
C14 Grant of patent or utility model
GR01 Patent grant
CP01 Change in the name or title of a patent holder

Address after: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No.

Patentee after: HUAWEI DEVICE Co.,Ltd.

Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No.

Patentee before: Huawei Device Co.,Ltd.

CP01 Change in the name or title of a patent holder
TR01 Transfer of patent right

Effective date of registration: 20171214

Address after: Metro Songshan Lake high tech Industrial Development Zone, Guangdong Province, Dongguan City Road 523808 No. 2 South Factory (1) project B2 -5 production workshop

Patentee after: Huawei terminal (Dongguan) Co.,Ltd.

Address before: 518129 Longgang District, Guangdong, Bantian HUAWEI base B District, building 2, building No.

Patentee before: HUAWEI DEVICE Co.,Ltd.

TR01 Transfer of patent right
CP01 Change in the name or title of a patent holder

Address after: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province

Patentee after: HUAWEI DEVICE Co.,Ltd.

Address before: 523808 Southern Factory Building (Phase I) Project B2 Production Plant-5, New Town Avenue, Songshan Lake High-tech Industrial Development Zone, Dongguan City, Guangdong Province

Patentee before: Huawei terminal (Dongguan) Co.,Ltd.

CP01 Change in the name or title of a patent holder
CX01 Expiry of patent term

Granted publication date: 20100825

CX01 Expiry of patent term