CN203279117U - Earphone reused as external antenna and mobile terminal device using same - Google Patents
Earphone reused as external antenna and mobile terminal device using same Download PDFInfo
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- CN203279117U CN203279117U CN 201220640165 CN201220640165U CN203279117U CN 203279117 U CN203279117 U CN 203279117U CN 201220640165 CN201220640165 CN 201220640165 CN 201220640165 U CN201220640165 U CN 201220640165U CN 203279117 U CN203279117 U CN 203279117U
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Abstract
The utility model discloses an earphone reused as external antenna and a mobile terminal device using the earphone to receive FM/TV signals. The earphone comprises earphone signal lines and an earphone plug. At least an earphone signal line is an antenna, and the antenna is winded on other earphone signal lines. When the mobile terminal device uses the earphone reused as the external antenna and matched with the mobile terminal device, since the earphone is used as an accessory and does not need specially arranging a position and does not occupy inner space of the mobile terminal device, on an appearance structure aspect, the design of the mobile terminal device is more free, and influence of the antenna on other circuits in the mobile terminal device is prevented. The mobile terminal device includes a TV signal feed network can not only receive DTV system signals which are emitted by a plurality of base stations and has good electric wave coverage, but also can receive ATV system signal emitted by a large region single base station , and reception effect is equivalent to that of a common rod antenna.
Description
Technical field
The utility model relates to the electronics field, is specifically related to a kind of mobile terminal device that is multiplexed with the earphone of external antenna and uses this earphone.
Background technology
Here, first simply introduce this field common technology term:
LNA(Low Noise Amplifier)---low noise amplifier: the amplifier that a kind of semiconductor device that employing is made by special material and technique consists of, the noise factor of self is very low, is used for amplifying very faint high-frequency signal.
FM(Frequency Modulation)---frequency modulation(FM) is to be used for the processing mode of signal transmission in a kind of electronic technology field, often refers in particular to f-m broadcast station or with the radio receiver of frequency modulation standard.
ATV (Analogue Television)---simulated television, more early stage a kind of Da Qu wireless television system scheme processed covers the whole distract by a powerful television transmitting station.Due to its correlation technique and equipment very ripe, at present the ATV system is still very popular in Southeast Asia and South American region.
DTV(Digital Television)---Digital Television, with live image, voice and data, compress, encode, transmit, store by digital technology, send in real time, broadcast, the audiovisual system that supplies spectators to receive/play.That is to say, this be one from programme acquisition, be fabricated into program transmission, and all realize digitized system to the reception of user terminal.
LTCC(Low Temperature Co-fired Ceramic)---LTCC, LTCC technology are in the new material integrated assembly technology of nineteen eighty-two Hughes Electronics's exploitation, have become the mainstream technology of passive integration at present.The low-temperature sintered ceramics powder is made the accurate and fine and close green band of thickness, utilize the techniques such as laser drilling, micropore slip casting, accurate conductor paste printing to make needed circuitous pattern on the green band, and a plurality of passive components (as low appearance value electric capacity, resistance, filter, impedance transducer, coupler etc.) are imbedded in multilayer ceramic substrate, then overlap together, internal and external electrode can use respectively the metals such as silver, copper, gold, at 900 ℃ of lower sintering, make the non-interfering high-density circuit of three dimensions.
At present, begun to have played the part of important role in people's life with the hand held mobile terminal device of television broadcasting function, as the mobile phone with the TV broadcast capability that is seen everywhere.Usually, the receivable television broadcasting of hand held mobile terminal device mainly contains following two kinds, and dissimilar television broadcasting also has different requirements to the antenna that receives its signal:
1. simulated television (ATV) broadcasting, frequency range be 48MHz to 860MHz, wavelength is from 6.25 meters to 350 millimeters, needs 1.6 meters to 87 millimeters by quarter-wave antenna length, require the size of antenna radiator very large, generally adopt telescopic antenna in industry now.
2. Digital Television (DTV)) broadcasting, frequency is from 470MHz to 860MHz, wavelength is from 638 millimeters to 350 millimeters, need 160 millimeters to 87 millimeters by quarter-wave antenna length, require the size of antenna radiator very large, generally adopt telescopic antenna in industry now, the LTCC ceramic antenna is also popular gradually.But the present cost of LTCC ceramic antenna is higher, debugging difficulty is large, and its reception is also far short of what is expected than telescopic antenna.
Telescopic antenna and LTCC ceramic antenna are as two kinds of the widest TV antennas of the industry scope of application, and they self respectively have its pluses and minuses:
1. telescopic antenna---most widely used a kind of unipole antenna on the TV module of hand held mobile terminal device such as mobile TV and mobile phone, be built in hand held mobile terminal device housing at ordinary times, pulls out in apparatus casing during TV reception; Shows maximum radiation efficiency can reach 35-45%.The practical application of telescopic antenna is many, performance index are better, but complicated structure, often make the ID of hand held mobile terminal device such as mobile phone and structure even hardware designs be very restricted, the user that can't further improve hand held mobile terminal device such as mobile phone experiences (UE) performance and apparent innovative design level, and the cost high life is low.As proposed a kind of telescopic antenna in patent 200810202680, be mainly the performance optimization that has increased the structure design aspect on the basis of normal conventional telescopic antenna, this telescopic antenna does not change the fundamental nature of common telescopic antenna in fact.
Put it briefly, the existing subject matter of telescopic antenna has:
(1) must take approximately 60x16=960mm
3Shell in space (metal headroom district), and around antenna, the arrangement of element is limited significantly.For the style of the dapper hand held mobile terminal device of major part such as mobile phone etc., make its structural design face no small challenge.
(2) after antenna is pulled out, surrounding space form is disturbed, affect side personage's activity, particularly in people how crowded public place, it is convenient not to use.
(3) the complex structure cost is high, and in use procedure, the drawing mechanism frequent movement easily damages, and certainly will affect the life-span of hand held mobile terminal device complete machine.
(4) structural design scheme of telescopic antenna has seriously limited the design freedom of hand held mobile terminal device such as cell phone appearance moulding, hand held mobile terminal device with TV function can't be forged into the mass product with fashion appearance and modeling.
2.LTCC ceramic antenna---with hand held mobile terminal device such as the ultra thin handset a kind of built-in miniature antenna commonly used of DTV receiving module, and present cost is higher, uses chance seldom in mid and low-end products.As proposed a kind of LTCC ceramic antenna in patent 200910097375, can replace telescopic antenna in hand held mobile terminal device such as hand held numeric movable television device, have volume little, Stability Analysis of Structures makes the digital television mobile apparatus field that extensive use be arranged.But from present technical merit, the LTCC ceramic antenna basically can only be used for the digital television broadcasting of frequency from 470MHz to 860MHz and receive, can not be used for the analog television broadcast reception antenna, because the gain of LTCC ceramic antenna is very low and cost is high, low frequency end effect at simulated television is relatively poor, not yet develops the launch that reaches practical level at present.
Put it briefly, the subject matter of LTCC ceramic antenna has:
(1) bandwidth is generally 450-880MHz, even in its working band, reception is also poor, be only applicable to the emission of many base stations and electric wave and cover good DTV system, be not suitable as ATV low channel reception antenna (the ATV frequency band is 48-958MHz), namely can't be practical for the ATV system of Da Qu system single base station emission.
(2) in its effective band, shows maximum radiation efficiency can reach 25-35% in theory, but because being subjected to the impact of applied environment---induction when holding can make the skew of antenna resonance frequency---, and the radiation efficiency of antenna can sharply reduce.
(3) need on such antenna theory and structural member that the metals such as PCB element and battery are more between distance greater than 10mm, 8.5mm at least, PCB headroom area must not be less than 70x35mm
2, this is also the expense of sizable PCB area, when using in the hand held mobile terminal device, limitation is very large.
Except above two kinds of common antennas, some new antenna have also appearred, and as having proposed a kind of built-in television antenna for mobile terminal in patent 201120080107, be a kind of broken line antenna that is printed on cell rear cover.it is very abundant that this antenna is applicable in machine the space, can satisfy printed antenna on back cabinet for the requirement in headroom district in machine, otherwise reception can't reach the level of practice, and generally, be similar to this class formation of mobile phone closely in the hand held mobile terminal device, between cell rear cover and battery block, so large space is arranged unlikely on the one hand, on the other hand, add this class antenna in housing, in housing, battery also can be very large on the impact certainty of its performance, antenna performance is sharply descended, too low reception weak output signal gains, so that can't be on cell phone type hand held mobile terminal device practice.
Summary of the invention
The utility model provides a kind of mobile terminal device that is multiplexed with the earphone of external antenna and uses this earphone.
According to first aspect of the present utility model, the utility model provides a kind of earphone that is multiplexed with external antenna, and this earphone comprises earphone signal line and headset plug, also comprises antenna, and described antenna is wound on described earphone signal line, is electrically connected to described headset plug; The utility model provides a kind of earphone that is multiplexed with external antenna, and this earphone comprises earphone signal line and headset plug, and at least one in described earphone signal line is along other earphone signal wire-wound systems.
According to second aspect of the present utility model, the utility model provides a kind of mobile terminal device that uses this earphone, this equipment comprises earphone socket and display, also comprise antenna matching network, TV signal feed-in network, ATV circuit or DTV circuit, described earphone socket, antenna matching network, TV signal feed-in network, ATV circuit or DTV circuit signal successively connect; Described ATV circuit or DTV circuit are connected with described monitor signal.
the beneficial effects of the utility model are: because the antenna on earphone adopts the winding method design, make antenna after coiling to satisfy and receive analog television broadcast and the desired size of digital television broadcasting frequency range, can greatly reduce the length of whole earphone cord again, thereby avoid as satisfying the antenna size requirement, and with whole earphone cord during as antenna, cause its bend mode to change at any time because the earphone signal line is long, so that the also situation of acute variation of its signal strength signal intensity that receives, and mobile terminal device is when using the above-mentioned earphone with external antenna be complementary with it, because this earphone does not need to arrange specially the position not take the interior space of mobile terminal device as accessory yet, thereby make mobile terminal device freer aspect the outward appearance structural design, and can also avoid antenna on the impact of other circuit in mobile terminal device, simultaneously, the mobile terminal device that comprises TV signal feed-in network not only can receive the emission of many base stations and the good DTV system signal of electric wave covering, ATV system signal for the single base station emission of Da Qu system also can receive, and reception can be suitable with common telescopic antenna.
Description of drawings
Fig. 1 is the structural representation of coiling part on a kind of earphone that is multiplexed with external antenna in the utility model embodiment one;
Fig. 2 is that a kind of mobile terminal device in the utility model embodiment two uses the described earphone of embodiment one to realize the principle schematic that the TV signal receives.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail below by embodiment.
Embodiment one
Please refer to Fig. 1, the earphone that is multiplexed with external antenna in the present embodiment comprises following part: earphone signal line and headset plug, earphone is multiplexed with antenna can be realized by following dual mode: the one, and separately add at least single line as antenna on earphone, and the wire-wound that this adds is formed on described earphone signal line, this line is electrically connected to described headset plug; Perhaps, directly with at least one in the earphone signal line as antenna, this line is along other earphone signal wire-wound systems.Directly with at least one in the earphone signal line as antenna, and when this line is processed along other earphone signal wire-wounds, concrete winding method divided following two kinds of situations:
The first situation is that earphone wire size line is when being four, these four earphone wire size lines are respectively R channel (R-Ch) tone frequency channel wire 101, microphone (MIC) tone frequency channel wire 102, L channel (L-Ch) tone frequency channel wire 104 and ground wire 103, the antenna that coiling forms specifically has following three kinds of different winding methods: (1) with any earphone signal line in 4 earphone signal lines as heart yearn, in other three earphone signal lines at least one are multiplexed with antenna, simultaneously, these other three earphone signal lines tightly are wrapped in coiling on heart yearn together; (2) with any two earphone signal lines in 4 earphone signal lines as heart yearn, at least one in other two earphone signal lines are multiplexed with antenna, simultaneously, these other two earphone signal lines tightly are wrapped in coiling on heart yearn together; (3) with any three earphone signal lines in 4 earphone signal lines as heart yearn, other earphone signal line is multiplexed with antenna, simultaneously, this earphone signal line that is multiplexed with antenna tightly is wrapped in coiling on heart yearn.
The second situation is that earphone wire size line is when being three, these three earphone wire size lines are respectively R channel (R-Ch) tone frequency channel wire 101, L channel (L-Ch) tone frequency channel wire 104 and ground wire 103, the antenna that coiling forms specifically has following two kinds of different winding methods: (1) with any earphone signal line in 3 earphone signal lines as heart yearn, in other two earphone signal lines at least one are multiplexed with antenna, simultaneously, these other two earphone signal lines tightly are wrapped in coiling on heart yearn together; (2) with any two earphone signal lines in 3 earphone signal lines as heart yearn, other earphone signal line is multiplexed with antenna, simultaneously, this earphone signal line that is multiplexed with antenna tightly is wrapped in coiling on heart yearn.
After completing with the upper type coiling, its axial length of winding portion on antenna is 80-150mm, the stretched length of winding portion is about the half-wavelength of operating frequency, the class of concrete axial length and stretched length depending on earphone product or to the reception of aerial signal.Simultaneously, because the dielectric constant of the wire diameter of earphone signal line, conductivity and insulating barrier is different, need to select as the case may be which bar earphone signal line as heart yearn, other earphone signal lines tightly are wrapped on heart yearn becomes antenna with coiling.In the present embodiment, as shown in Figure 1, antenna on earphone be adopt the first situation the inside (3) in the method coiling, that is: with the R channel in the earphone signal line (R-Ch) tone frequency channel wire 101, microphone (MIC) tone frequency channel wire 102 and ground wire 103 as heart yearn, the L channel of earphone signal line (L-Ch) tone frequency channel wire 104 is multiplexed with antenna, and it tightly is wrapped in coiling on heart yearn.
Because the antenna on earphone adopts the winding method design, make antenna after coiling to satisfy and receive analog television broadcast and the desired size of digital television broadcasting frequency range, can greatly reduce the length of whole earphone cord again, thereby avoid as satisfying the antenna size requirement, and with whole earphone cord during as antenna, cause its bend mode to change at any time because the earphone signal line is long, so that the also situation of acute variation of its signal strength signal intensity that receives.Multiple different winding method and coiling length make the design of antenna can be more flexible and changeable according to actual operating position, to satisfy different consumers' different needs.
Embodiment two
Please refer to Fig. 2, realize for mobile terminal device uses the described earphone of embodiment one principle schematic that the FM/TV signal receives, wherein, the arrow that forms with round dot represents that the TV high-frequency signal flows to track, and the arrow that forms with dash line represents that audio signal flows to track.
In the present embodiment, earphone socket, antenna matching network, TV signal feed-in network, ATV circuit or DTV circuit and display are housed in mobile terminal device.Earphone socket, antenna matching network, TV signal feed-in network, ATV circuit or DTV circuit signal successively connect; ATV circuit or DTV circuit are connected with described monitor signal.
the earphone socket that arranges on mobile terminal device and the headset plug on earphone are complementary, and earphone socket is provided with pin, in the signal access mobile terminal device that this pin is used for the antenna reception on earphone is arrived, TV signal feed-in network in mobile terminal device namely is connected with the headset plug signal by the pin of earphone socket, after headset plug is inserted the earphone socket that is complementary with it, in a single day antenna on earphone receives the signal of analog television broadcast or digital television broadcasting frequency range, the signal that receives can be introduced TV signal feed-in network by the pin on headset plug and earphone socket.In the present embodiment, also the ceramic dielectric capacitor of available 1000PF with each winding terminal in antenna by the TV signal feed-in network in the pin on earphone socket access mobile terminal device, with same capacitor with each heart yearn ground connection; Simultaneously, at audio signal channel arrangement isolation magnetic bead, the radiofrequency signal wiring of earphone socket will reduce the impact of distributed constant as far as possible.
Further, also be provided with band pass filter in mobile terminal device, band pass filter is respectively at TV signal feed-in network and ATV circuit or the connection of DTV circuit signal.
Further, also can select LNA LNA according to the broadcast television signal intensity in product objective market in mobile terminal device.If it is relatively poor that broadcast television signal covers, a little less than the most area signal strength signal intensity, can select LNA LNA; Otherwise, cover country preferably at signal, do not need to select LNA LNA.The LNA LNA that selects is connected with band pass filter with the ATV circuit respectively.
In order to realize the matched well between each circuit in antenna and mobile terminal device, need carefully to debug the coiling length of antenna and each component parameters in TV signal feed-in network.For antenna matching network, the general T-shaped or П type LC network that adopts maturation, choose from disclosed universal circuit and get final product, need to carry out according to the axial length of the winding portion of antenna for the design of antenna matching network and debugging, if after coiling, the axial length of winding portion is less than 100mm, can allocate by the mode of one pole half-wave dipole, if after coiling, the axial length of winding portion is greater than 150mm, preferably debug matching network (being similar to the endless open circuited transmission line) by the allotment scheme of traveling-wave antenna.
In the hand held mobile terminal device with radio function, the mode that earphone directly is multiplexed with the FM antenna is very popular, but because picture quality is had relatively high expectations, the signal intractability is large, so any one the mode that directly earphone is multiplexed with in ATV, DTV antenna is in the exploratory stage always, also without any the case of practical application, and in the present embodiment, realized directly earphone being multiplexed with the scheme of ATV or DTV antenna.when mobile terminal device uses the mode of utilizing earphone signal wire-wound system described in the embodiment one that is complementary with it to be multiplexed with the earphone of external TV antenna, because this earphone does not need to arrange specially the position not take the interior space of mobile terminal device as accessory yet, thereby avoided the impact of external antenna on the appearance design scheme of mobile phone or other hand held mobile terminal device, make mobile terminal device freer aspect the outward appearance structural design, significantly improve the degree of freedom of shape-designing, and can also avoid antenna on the impact of other circuit in mobile terminal device, facility when increasing simultaneously the user by hand held mobile terminal device TV reception, eliminate telescopic antenna and pulled out the rear other people's of impact inconvenience, and telescopic antenna useful life the limited and product quality accident that causes etc.Simultaneously, the mobile terminal device that comprises TV signal feed-in network etc. not only can receive the emission of many base stations and electric wave covers good DTV system signal, ATV system signal for the single base station emission of Da Qu system also can receive, and reception can be suitable with common telescopic antenna.And adjusting and the design of the antenna matching network that carries out according to the axial length of the winding portion of antenna, reduced the debugging difficulty of the ATV antenna of using as cell phone type hand held mobile terminal device, and can reach the receptivity of general telescopic antenna, the efficient of cell phone type mobile terminal device antenna used is brought up to more than 50%, and easy realization with low cost.The design simple possible of this kind multiplex antenna can significantly reduce the cost of television antenna, improves machine life.Reception in most of simulated television frequency range basically can be suitable with common telescopic antenna, by being multiplexed with the technical scheme of ATV or DTV antenna after common headphones wire-wound system, can greatly reduce direct jitter, picture quality when multiplexing too poor so that can't practical weakness, make its reception can reach level close to telescopic antenna, can practice in general product design scheme, and finally accepted by the user.
Above content is in conjunction with concrete execution mode further detailed description of the utility model, can not assert that concrete enforcement of the present utility model is confined to these explanations.For the utility model person of an ordinary skill in the technical field, without departing from the concept of the premise utility, can also make some simple deduction or replace.
Claims (10)
1. an earphone that is multiplexed with external antenna, comprise earphone signal line and headset plug, it is characterized in that, also comprises antenna, and described antenna is wound on described earphone signal line, is electrically connected to described headset plug.
2. an earphone that is multiplexed with external antenna, comprise earphone signal line and headset plug, it is characterized in that, at least one in described earphone signal line is along other earphone signal wire-wound systems.
3. earphone as claimed in claim 2, is characterized in that, in described earphone signal line any one along at least one coiling in other two earphone signal lines.
4. earphone as claimed in claim 2, is characterized in that, in described earphone signal line any two along other earphone signal wire-wound system.
5. earphone as claimed in claim 2, is characterized in that, in described earphone signal line any one along at least one coiling in other three earphone signal lines.
6. earphone as claimed in claim 2, is characterized in that, in described earphone signal line any two along at least one coiling in other two earphone signal lines.
7. earphone as claimed in claim 2, is characterized in that, in described earphone signal line any three along other earphone signal wire-wound system.
8. an employing realizes as earphone as described in any one in claim 1-7 the mobile terminal device that the FM/TV signal receives, comprise earphone socket and display, it is characterized in that, also comprise antenna matching network, TV signal feed-in network, ATV circuit or DTV circuit, described earphone socket, antenna matching network, TV signal feed-in network, ATV circuit or DTV circuit signal successively connect; Described ATV circuit or DTV circuit are connected with described monitor signal.
9. mobile terminal device as claimed in claim 8, is characterized in that, also comprises band pass filter, described band pass filter respectively with described ATV circuit or DTV circuit, and TV signal feed-in network signal be connected.
10. mobile terminal device as claimed in claim 9, is characterized in that, also comprises LNA LNA, and described LNA LNA is connected with ATV circuit or DTV circuit and band pass filter signal respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640165 CN203279117U (en) | 2012-11-28 | 2012-11-28 | Earphone reused as external antenna and mobile terminal device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220640165 CN203279117U (en) | 2012-11-28 | 2012-11-28 | Earphone reused as external antenna and mobile terminal device using same |
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| Publication Number | Publication Date |
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| CN203279117U true CN203279117U (en) | 2013-11-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201220640165 Expired - Fee Related CN203279117U (en) | 2012-11-28 | 2012-11-28 | Earphone reused as external antenna and mobile terminal device using same |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390825A (en) * | 2015-11-28 | 2016-03-09 | 广东欧珀移动通信有限公司 | Antenna device of mobile terminal and mobile terminal |
| CN106899907A (en) * | 2017-02-24 | 2017-06-27 | 惠州Tcl移动通信有限公司 | A kind of earphone and communication component |
| CN107229885A (en) * | 2017-05-27 | 2017-10-03 | 深圳市德卡科技股份有限公司 | It is non-to connect brushing card device |
| CN112399296A (en) * | 2019-08-19 | 2021-02-23 | Oppo广东移动通信有限公司 | Wearable device |
-
2012
- 2012-11-28 CN CN 201220640165 patent/CN203279117U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105390825A (en) * | 2015-11-28 | 2016-03-09 | 广东欧珀移动通信有限公司 | Antenna device of mobile terminal and mobile terminal |
| CN106899907A (en) * | 2017-02-24 | 2017-06-27 | 惠州Tcl移动通信有限公司 | A kind of earphone and communication component |
| CN107229885A (en) * | 2017-05-27 | 2017-10-03 | 深圳市德卡科技股份有限公司 | It is non-to connect brushing card device |
| CN112399296A (en) * | 2019-08-19 | 2021-02-23 | Oppo广东移动通信有限公司 | Wearable device |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20181128 |