CN208157612U - A kind of earphone switching antenna and DTV - Google Patents
A kind of earphone switching antenna and DTV Download PDFInfo
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- CN208157612U CN208157612U CN201820348461.1U CN201820348461U CN208157612U CN 208157612 U CN208157612 U CN 208157612U CN 201820348461 U CN201820348461 U CN 201820348461U CN 208157612 U CN208157612 U CN 208157612U
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Abstract
The utility model relates to a kind of earphone switching antenna and DTVs, more particularly to technical field of electronic equipment.The technical problem to be solved is that the filters of DTV antenna, and filtering is not effectively performed so that the signal of antenna transmission by tone frequency channel wire with being coupled to mainboard, it is bad so as to cause the effectiveness of antenna.Including:First connector, for being connect with electronic equipment；Second connector, for being connect with earphone；Cable connects the first connector, the second connector；Audio isolation circuit, for the first connector and the cable of connecting.The utility model earphone switching antenna at least has following advantages：Filtering has been effectively performed by the way that audio isolation circuit is arranged between the first connector and cable, audio signal and aerial signal has been isolated, has improved the efficiency of transmission of antenna transmission signal；Isolation circuit setting eliminates the isolation circuit on mainboard, optimizes arrangement space on earphone switching antenna.
Description
Technical field
The utility model relates to technical field of electronic equipment, more particularly to a kind of earphone switching antenna and DTV.
Background technique
DTV is also known as Digital TV or digital television (DTV：Digital TV), from studio to transmitting, transmission,
It is all by by 0,1 numeric string that received all links, which are all using digital television signal or the signal propagation all to the system,
The binary digit stream constituted is come the television genre propagated, and compared with simulated television, the loss of signal is small, and reception is good；Its
Using bidirectional transfer of information technology, interaction capabilities are increased, impart many completely new functions of TV, allow user according to certainly
Oneself demand obtains the new business such as various network services, including video on demand, shopping online, remote teaching, tele-medicine, makes electricity
Become qualified information household appliances depending on machine.Therefore liking for user is received, obtained widely universal.
The antenna of DTV is a kind of converter, for being transformed into free space the guided wave on transmission line
Electromagnetic wave, or carry out opposite transformation and receive wireless signal.Its frequency is 470MHz -700MHz.The antenna of DTV is past
Toward on the mainboard for being connected to television internal together with earphone, therefore, earphone is connected to television set and needs one to have antenna
The earphone jack of cable, one end and TV connects, and the other end connects earphone, so that user improves without in addition setting antenna
The appearance of TV.
But since the signal of such cable antenna and the audio signal of earphone interfere with each other, not only reduce antenna
Effectiveness, while also influencing the transmission of audio signal, therefore, generally with the connecting pin of earphone setting filtering dress
It sets, so that preferable audio frequency effect can be obtained while improving the efficiency of antenna.Existing earphone antenna is all that will filter dress
It installs and is disposed adjacent on the terminal of earphone, by actual measurement, the signal transfer rate of antenna still has loss, in 600MHz -700MHz
Its efficiency of transmission only has 5% -1% in frequency range, it has been investigated that, which is because, since filter is apart from TV master
Farther out, filter does not play filter action to the antennal interface of plate well, so that the signal of antenna transmission is by tone frequency channel wire coupling
With closing mainboard, bad so as to cause the effectiveness of antenna.
Utility model content
The main purpose of the utility model is that providing a kind of new structural earphone switching antenna, skill to be solved
Art problem is that filtering is not effectively performed in the filter of DTV antenna, so that the signal of antenna transmission is coupled to by tone frequency channel wire
Mainboard, it is bad so as to cause the effectiveness of antenna.
It the purpose of this utility model and solves its technical problem and adopts the following technical solutions to realize.It is practical according to this
A kind of earphone switching antenna of novel proposition, including:
First connector, for being connect with electronic equipment；
Second connector, for being connect with earphone；
Cable connects the first connector, the second connector；
Audio isolation circuit is arranged in series between the first connector and cable.
It the purpose of this utility model and solves its technical problem also following technical measures can be used to further realize.
Preferably, earphone switching antenna above-mentioned, wherein the cable includes L channel line, right channel line, ground wire and wheat
Gram wind line.
Preferably, earphone switching antenna above-mentioned, wherein first connector includes,
L channel terminal, for connecting the L channel line；
Right channel terminal, for connecting the right channel line；
Ground terminal, for connecting the ground wire；
Microphone terminal, for connecting the microphone lines.
Preferably, earphone switching antenna above-mentioned, sound intermediate frequency isolation circuit include:
L channel isolation circuit, one end connect the L channel terminal, and the other end connects the L channel line；
Right channel isolation circuit, one end connect the right channel terminal, and the other end connects the right channel line；
Microphone isolation circuit, one end connect the microphone terminal, and the other end connects the microphone lines.
Preferably, earphone switching antenna above-mentioned, wherein the L channel isolation circuit includes the first laminated inductance；
The right channel isolation circuit includes the second laminated inductance；
The microphone isolation circuit includes third layer stack inductance.
Preferably, earphone switching antenna above-mentioned, wherein the L channel terminal, the right channel terminal, the ground connection
Terminal and the microphone terminal are coaxially disposed in first connector.
Preferably, earphone above-mentioned is transferred antenna, wherein first laminated inductance, second laminated inductance and described
The inductance of third layer stack inductance is 220nH-330nH.
Preferably, earphone switching antenna above-mentioned, wherein the length of earphone switching antenna is 16cm -17cm.
Preferably, earphone switching antenna above-mentioned, wherein second connector has jack.
It the purpose of this utility model and solves its technical problem also the following technical solution is employed to realize.It is practical according to this
A kind of DTV of novel proposition, including,
Above-mentioned earphone switching antenna；
Mainboard, is equipped with earphone jack, first connector of earphone switching antenna by the earphone jack and
Mainboard connection.
By above-mentioned technical proposal, the utility model earphone switching antenna at least has following advantages：
Filtering has been effectively performed by the way that audio isolation circuit is arranged between the first connector and cable, audio has been isolated
Signal and aerial signal improve the efficiency of transmission of antenna transmission signal；Isolation circuit setting is saved on earphone switching antenna
Isolation circuit on mainboard, optimizes arrangement space.
The above description is merely an outline of the technical solution of the present invention, in order to better understand the skill of the utility model
Art means, and can be implemented in accordance with the contents of the specification, below on the preferred embodiment of the present invention and the accompanying drawings in detail
It describes in detail bright as after.
Detailed description of the invention
Fig. 1 is the front view for the earphone switching antenna that the embodiments of the present invention propose；
Fig. 2 is that the first connector of the earphone switching antenna that the embodiments of the present invention propose and audio isolation circuit connect
The schematic diagram connect；
Fig. 3 is the structural block diagram for the earphone switching antenna that the embodiments of the present invention propose.
Specific embodiment
Further to illustrate that the utility model is the technical means and efficacy reaching predetermined purpose of utility model and being taken,
Below in conjunction with attached drawing and preferred embodiment, to according to the utility model proposes earphone switching its specific embodiment of antenna, knot
Structure, feature and its effect, detailed description is as follows.In the following description, different " embodiment " or " embodiment " refers to different
It surely is the same embodiment.In addition, the special characteristic, structure or feature in one or more embodiments can be by any suitable form group
It closes.
Now, many DTV TVs use headset cord as television antenna, by connecting headset plug and insertion ear by cable
The earphone patchcord that the jack of machine is constituted may make up television antenna.The audio signal of low frequency is being transmitted in such earphone patchcord
Meanwhile the aerial signal of high frequency can be transmitted, audio signal is low frequency signal of the range between 300~3000Hz, antenna letter
Number for range 470~700MHz high-frequency signal, realize two kinds of signals use same root cable transmission function, simplify
Television accessory equipment, user are easy to use.But there is also aerial signals can be coupled to ground by audio signal, to decay
Aerial signal, reduces the efficiency of transmission of aerial signal.Therefore, to solve this problem, the utility model proposes a kind of ears
Machine switching antenna.
As shown in Figure 1, a kind of earphone switching antenna that one embodiment of the utility model proposes comprising:First connects
Device 1 is connect, for connecting with electronic equipment；Second connector 4, for being connect with earphone；Cable 3, the first connector 1 of connection, the
Two connectors 4；Audio isolation circuit 2, for the first connector 1 and the cable 3 of connecting.
In the present embodiment, audio isolation circuit is connected between the first connector and cable, due to the first connector
It is connect with electronic equipment, therefore, audio isolation circuit is far from the second connector；And the earphone switching antenna of the present embodiment is in addition to tool
Play the role of outside earphone switching cable, using antenna can also be played the role of on DTV TV, since audio isolation circuit is separate
Second connector can be effectively isolated audio signal and aerial signal, improve the signal of aerial signal close to DTV mainboard
The efficiency of transmission.
Further, as one embodiment, as shown in figure 3, cable 3 includes L channel line 31, right channel line 32, ground wire
34 and microphone lines 33.
DTV TV can also have the function of game, program request, commercial affairs etc. other than having the function of televising, at
For a kind of intelligent electronic equipment, it is therefore desirable to which headset cord, will also be to television transmission other than receiving the audio signal of TV
Audio signal, this preferred embodiment provide the function that audio signal is mutually effectively transmitted between man-machine.
Further, preferably, as shown in Figures 2 and 3, first connector 1 includes L channel terminal
11, for connecting the L channel line 31；Right channel terminal 12, for connecting the right channel line 32；Ground terminal 14, is used for
Connect the ground wire 34；Microphone terminal 13, for connecting the microphone lines 33.
In order to which mutual audio frequency transmission function between man-machine is better achieved, pass through L channel line, right channel line, ground wire and wheat
Gram wind line is separately connected L channel terminal, right channel terminal, ground terminal and microphone terminal.
Further, preferably, audio isolation circuit 2 includes:L channel isolation circuit, one end connection are left
Sound channel terminal 11, the other end connect L channel line 31；Right channel isolation circuit, one end connect right channel terminal 12, and the other end connects
Connect right channel line 32；Microphone isolation circuit, one end connect microphone terminal 13, and the other end connects microphone lines 33.
By long-term research with multiple repetition test, using above-mentioned preferred embodiment, by L channel terminal with
Isolation circuit is respectively set in L channel line, right channel terminal and right channel line and microphone terminal and microphone lines, can reach
Optimal isolation effect effectively improves the efficiency of transmission of aerial signal.
Further, preferably, as shown in figure 3, L channel isolation circuit includes the first laminated inductance 21；
Right channel isolation circuit includes the second laminated inductance 22；Microphone isolation circuit includes third layer stack inductance 23.
Laminated inductance has good electromagnetic shielding performance, sintered density height, mechanical strength good.Compared with coiling chip inductor
Have many advantages, such as：Size is small, is conducive to the miniaturization of circuit, magnetic circuit closed, will not interfere the component of surrounding, will not be faced
The interference of nearly component, is conducive to the high-density installation of component；Integral structure, high reliablity；Heat resistance, solderability are good；
Shape is regular, is suitable for automating surface installation production.
Laminated inductance conduct is passed through using above-mentioned preferred embodiment with multiple repetition test by long-term research
The electronic component of isolation signals can achieve the optimum efficiency of signal isolation.
Further, preferably, the L channel terminal 11, right channel terminal 12,14 and of ground terminal
Microphone terminal 13 is coaxially disposed in the first connector 1.
By long-term research with multiple repetition test, using above-mentioned preferred embodiment, L channel terminal, right channel
Terminal, ground terminal and microphone terminal coaxial arrangement can achieve optimal audio signal transmission effect.
Further, preferably, as shown in figure 3, first laminated inductance 21, second lamination electricity
The inductance of sense 22 and the third layer stack inductance 23 is 220nH-330nH.
By long-term research with multiple repetition test, using above-mentioned preferred embodiment, use inductance for
The laminated inductance of 220nH-330nH can be effectively isolated audio signal and aerial signal, so that the 470MHz-of antenna
The efficiency of transmission of 700MHz signal reaches 10% or more.
Further, preferably, the length of earphone switching antenna provided by the utility model is 16cm-
17cm。
The length and signal frequency of antenna have close relationship, the laser propagation effect of signal are directly affected, by long-term
Research and multiple repetition test, using above-mentioned preferred embodiment, which is suitable for 470~700MHz's of antenna
Range of signal enables to antenna to reach optimum signal laser propagation effect.
Further, preferably, as shown in Figure 1, second connector 4 has jack (in figure not
Show).
By this preferred embodiment, can make the utility model proposes earphone switching antenna realize joint use
Function, that is, can connect earphone, also can connect antenna base；TV can be connected at home, and man-machine friendship is carried out by headset
Mutually activity, also can be applied to the electronic equipment of automobile audio etc., convenient and practical.
Another embodiment of the utility model proposes a kind of DTV, further includes：Above-mentioned earphone switching antenna and mainboard,
Earphone jack is equipped on mainboard, first connector of the earphone switching antenna is connected by the earphone jack and mainboard
It connects.Simultaneously by carrying out aerial signal transmission between earphone jack and mainboard, realize through headset simultaneous transmission audio signal and
The function of aerial signal.
The above descriptions are merely preferred embodiments of the present invention, not makees in any form to the utility model
Limitation, any simple modification, equivalent change and modification made by the above technical examples according to the technical essence of the present invention,
It is still within the scope of the technical solutions of the present invention.
Claims (10)
- The antenna 1. a kind of earphone is transferred, it is characterised in that：Including:First connector, for being connect with electronic equipment；Second connector, for being connect with earphone；Cable connects the first connector and the second connector；Audio isolation circuit is arranged in series between the first connector and cable.
- The antenna 2. earphone according to claim 1 is transferred, which is characterized in thatThe cable includes L channel line, right channel line, ground wire and microphone lines.
- The antenna 3. earphone according to claim 2 is transferred, which is characterized in thatFirst connector includes,L channel terminal, for connecting the L channel line；Right channel terminal, for connecting the right channel line；Ground terminal, for connecting the ground wire；Microphone terminal, for connecting the microphone lines.
- The antenna 4. earphone according to claim 3 is transferred, which is characterized in thatAudio isolation circuit includes:L channel isolation circuit, one end connect the L channel terminal, and the other end connects the L channel line；Right channel isolation circuit, one end connect the right channel terminal, and the other end connects the right channel line；Microphone isolation circuit, one end connect the microphone terminal, and the other end connects the microphone lines.
- The antenna 5. earphone according to claim 4 is transferred, which is characterized in thatThe L channel isolation circuit includes the first laminated inductance；The right channel isolation circuit includes the second laminated inductance；The microphone isolation circuit includes third layer stack inductance.
- The antenna 6. earphone according to claim 4 is transferred, which is characterized in thatThe L channel terminal, the right channel terminal, the ground terminal and the microphone terminal are in first connection Coaxial arrangement in device.
- The antenna 7. earphone according to claim 5 is transferred, which is characterized in thatThe inductance of first laminated inductance, second laminated inductance and the third layer stack inductance is 220nH-330nH.
- The antenna 8. earphone according to claim 1 is transferred, which is characterized in thatThe length of earphone switching antenna is 16cm-17cm.
- The antenna 9. earphone according to claim 1 is transferred, which is characterized in thatSecond connector has jack.
- 10. a kind of DTV, which is characterized in that including,Any earphone switching antenna of the claims 1 to 9；Mainboard, is equipped with earphone jack, and first connector of the earphone switching antenna passes through the earphone jack and mainboard Connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820348461.1U CN208157612U (en) | 2018-03-14 | 2018-03-14 | A kind of earphone switching antenna and DTV |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820348461.1U CN208157612U (en) | 2018-03-14 | 2018-03-14 | A kind of earphone switching antenna and DTV |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208157612U true CN208157612U (en) | 2018-11-27 |
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ID=64391484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820348461.1U Active CN208157612U (en) | 2018-03-14 | 2018-03-14 | A kind of earphone switching antenna and DTV |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208157612U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825058A (en) * | 2021-09-18 | 2021-12-21 | 深圳金贝奇电子有限公司 | Wireless communication earphone communication system for reducing external environment interference |
-
2018
- 2018-03-14 CN CN201820348461.1U patent/CN208157612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113825058A (en) * | 2021-09-18 | 2021-12-21 | 深圳金贝奇电子有限公司 | Wireless communication earphone communication system for reducing external environment interference |
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