CN201590875U - Speaker system and electronic device using same - Google Patents
Speaker system and electronic device using same Download PDFInfo
- Publication number
- CN201590875U CN201590875U CN2009202052109U CN200920205210U CN201590875U CN 201590875 U CN201590875 U CN 201590875U CN 2009202052109 U CN2009202052109 U CN 2009202052109U CN 200920205210 U CN200920205210 U CN 200920205210U CN 201590875 U CN201590875 U CN 201590875U
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- speaker system
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Abstract
The utility model provides a speaker system and an electronic device using the same. The speaker system comprises a speaker body, a coil used as an antenna for electromagnetic wave signal transmission and fixed on an outer casing of the speaker body, a near field communication or a radio frequency identification amplification output circuit, and a radio frequency amplification output circuit. Compared with the prior art, by positioning the coil on the outer casing of the speaker body, the speaker system and the electronic device using the same are capable of saving space, enlarging coil area without increasing the space, and accordingly increasing radiation efficiency of electromagnetic wave signals and communication distance among devices.
Description
[technical field]
The utility model relates to a kind of speaker system and uses the electronic equipment of this system, relate in particular to a kind of with short-range communication technique speaker system and use the electronic equipment of this system.
[background technology]
Fast development along with portable consumer electronic device, people are more and more higher to its functional requirement, except being furnished with acoustical generator, near-field communication Near Field Communication (being called for short NFC) and radio-frequency (RF) identification Radio Frequency Identification (being called for short RFID) function have all been set up in a lot of consumer-elcetronics devicess in the electronic equipment with the information exchange between the realization equipment as the vocal function.For realizing this function, existing mobile communication equipment manufacturer successively is embedded in near-field communication technology or REID at mobile communication product, make such mobile communication product get final product sounding, can exchange electromagnetic wave signal to realize carrying out short-range information exchange between the electronic equipment by near-field communication technology and REID again to realize call function.An antenna also need be installed with emission or reception electromagnetic wave signal in this product, electric capacity in this antenna and NFC or the RFID power amplifier output circuit constitutes resonant circuit, and launch the electromagnetic wave signal that this resonant circuit produces, thereby carry out short-range information exchange by the exchange electromagnetic wave between the realization equipment by this antenna.Generally, required antenna is to add a special-purpose coil in mobile communication equipment, but along with mobile communication equipment is more and more microminiaturized, its volume inside is then more and more limited, thereby causes being difficult to find suitable space to be used to settle special-purpose coil.
Thereby, near-field communication technology and radio-frequency (RF) identification (being called for short RFID) are embedded in the mobile communication equipment, the problem values that can solve its inner space predicament again gets people's research.
[utility model content]
The technical problem that the utility model need solve is to overcome above-mentioned the deficiencies in the prior art, and a kind of speaker system that can save the space is provided.
According to the above-mentioned technical problem that needs solution, designed a kind of speaker system, comprise the loud speaker body, this loud speaker body includes shell and is exposed to first power connection end and second power connection end of shell, this speaker system also comprises: as the coil of antenna with the transmission electromagnetic wave signal, it is fixed on the shell of loud speaker body, and electrically connects with first power connection end and second power connection end; Near-field communication or radio-frequency (RF) identification power amplifier output circuit, its output links to each other with an end of inductance respectively with input, and the other end of each inductance is connected respectively to first power connection end and second power connection end again; Audio frequency power amplifier output circuit, its output and input link to each other with an end of electric capacity respectively, and the other end of each electric capacity is connected respectively to described first power connection end and second power connection end again.
According to the above-mentioned technical problem that needs solution, also designed a kind of electronic equipment, this electronic equipment comprises speaker system, this speaker system comprises the loud speaker body, this loud speaker body includes shell and is exposed to first power connection end and second power connection end of shell, this speaker system also comprises as antenna to transmit the coil of electromagnetic wave signal, the coil and first power connection end and the electric connection of second power connection end; Near-field communication or radio-frequency (RF) identification power amplifier output circuit, its output links to each other with an end of inductance respectively with input, and the other end of each inductance is connected respectively to first power connection end and second power connection end again; Audio frequency power amplifier output circuit, its output and input link to each other with an end of electric capacity respectively, and the other end of each electric capacity is connected respectively to described first power connection end and second power connection end again.
Compared with prior art, the coil location that the utility model is provided with can be saved the space on the shell of loud speaker body, and under the situation that does not increase the space, make the area of coil bigger, thereby can increase the radiation efficiency of electromagnetic wave signal and the communication distance between equipment and the equipment.
[description of drawings]
Fig. 1 is the utility model speaker system and circuit arrangement schematic diagram wherein.
[embodiment]
The utility model is described in further detail below in conjunction with drawings and embodiments.
Please refer to Fig. 1, the utility model speaker system comprises loud speaker body (not shown), NFC power amplifier output circuit, audio frequency power amplifier output circuit.This loud speaker body includes shell (not shown) and is exposed to first power connection end 3 and second power connection end 4 of shell.First power connection end links to each other with the intrinsic voice coil loudspeaker voice coil 1 of second power connection end and loud speaker feed tone currents for the loud speaker body.On the loud speaker body housing, also be provided with as the coil 2 of antenna use, firm for making coil location, also be provided with groove at the shell of loud speaker body, with set winding.
Referring again to Fig. 1, the intrinsic voice coil loudspeaker voice coil 1 of this loud speaker and all be electrical connected with first power connection end 3 and second power connection end 4 as the coil 2 of antenna.NFC power amplifier output circuit includes rf power amplifier, and rf power amplifier is used for need are waited that the signal of sending out or exchanging amplifies.The output of this NFC power amplifier output circuit links to each other with the end of two inductance L 1, L2 respectively with input, and the other end of two inductance L 1, L2 is connected respectively to first power connection end 3 and second power connection end 4 again.The audio frequency power amplifier output circuit includes audio power amplifier, and audio power amplifier is used for audio signal is amplified.The output of this audio frequency power amplifier output circuit links to each other with the end of two capacitor C 1, C2 respectively with input, and the other end of two capacitor C 1, C2 is connected respectively to described first power connection end 3 and second power connection end 4 again.
Operation principle of the present utility model is: when the audio frequency power amplifier output circuit is worked, its operating frequency section is 0～22KHZ, and capacitor C 1 and C2 present high impedance or resistance at this frequency band, so that can be considered disconnection, when being the work of audio frequency power amplifier output circuit, NFC power amplifier output circuit is not worked.Equally, when NFC power amplifier output circuit was worked, its operating frequency was 13.56MHz, inductance L 1 and L2 in the audio frequency power amplifier output circuit present high impedance or resistance in this frequency, so that can be considered disconnection, i.e. during NFC power amplifier output circuit work, the audio frequency power amplifier output circuit is not worked.
Coil of the present utility model is an annular, and this structure is better effects if on the interacting of blocking-up audio frequency, radio frequency.
The utility model speaker system often is applied on the electronic equipments such as cell phone.Loudspeaker monomer is sounded to realize call function.The NFC power amplifier is to realize carrying out short-range information exchange between the electronic equipment.Usually, audio frequency power amplifier output circuit and NFC power amplifier output circuit and other electrical components all are integrated on the interior pcb board of electronic equipment.The utility model can separate audio frequency output and NFC output, thereby, when the user need use the near-field communication technology to carry out short haul connection, the work of NFC power amplifier output circuit, the audio frequency power amplifier output circuit is not worked, and the coil of this moment is equal to an inductance, and capacitor C 1 in this circuit and capacitor C 2 and inductance constitute a resonant circuit, simultaneously, coil passes out the electromagnetic wave signal that this resonant circuit produces as antenna.
The utility model is wrapped on the electronic equipment on the existing loud speaker device body as the coil of antenna, audio frequency output and NFC output can be worked simultaneously, be independent of each other, improved the usage space of electronic equipment effectively, realize speaker system and use the rational deployment of the electronic equipment of this system, solved the space predicament of electronic equipment, and do not increased under the situation in space, make the area of coil bigger, thereby can increase the radiation efficiency of electromagnetic wave signal and the communication distance between equipment and the equipment.
The NFC technology that adopts the utility model realizes the information exchange between the electronic equipment, also can adopt the information exchange between the RFID technology realization electronic equipment.
Above-described only is preferred implementation of the present utility model; should be pointed out that for the person of ordinary skill of the art at this, under the prerequisite that does not break away from the utility model creation design; can also make improvement, but these all belong to protection range of the present utility model.
Claims (4)
1. a speaker system comprises the loud speaker body, and described loud speaker body includes shell and is exposed to first power connection end and second power connection end of shell, and it is characterized in that: described speaker system also comprises:
To transmit the coil of electromagnetic wave signal, it is fixed on the shell of loud speaker body as antenna, and electrically connects with first power connection end and second power connection end;
Near-field communication or radio-frequency (RF) identification power amplifier output circuit, its output links to each other with an end of inductance respectively with input, and the other end of each inductance is connected respectively to first power connection end and second power connection end again;
Audio frequency power amplifier output circuit, its output and input link to each other with an end of electric capacity respectively, and the other end of each electric capacity is connected respectively to described first power connection end and second power connection end again.
2. speaker system according to claim 1 is characterized in that: described coil is a loop configuration.
3. speaker system according to claim 1 is characterized in that: the groove that also is provided with a position line circle on the shell of loud speaker body.
4. electronic equipment that uses the speaker system of claim 1, described electronic equipment comprises speaker system, this speaker system comprises the loud speaker body, described loud speaker body includes shell and is exposed to first power connection end and second power connection end of shell, it is characterized in that: described speaker system also comprises as antenna to transmit the coil of electromagnetic wave signal, the coil and first power connection end and the electric connection of second power connection end;
Near-field communication or radio-frequency (RF) identification power amplifier output circuit, its output links to each other with an end of inductance respectively with input, and the other end of each inductance is connected respectively to first power connection end and second power connection end again;
Audio frequency power amplifier output circuit, its output and input link to each other with an end of electric capacity respectively, and the other end of each electric capacity is connected respectively to described first power connection end and second power connection end again.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202052109U CN201590875U (en) | 2009-09-28 | 2009-09-28 | Speaker system and electronic device using same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202052109U CN201590875U (en) | 2009-09-28 | 2009-09-28 | Speaker system and electronic device using same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201590875U true CN201590875U (en) | 2010-09-22 |
Family
ID=42750669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202052109U Expired - Lifetime CN201590875U (en) | 2009-09-28 | 2009-09-28 | Speaker system and electronic device using same |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201590875U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082838A (en) * | 2011-01-24 | 2011-06-01 | 中兴通讯股份有限公司 | Wireless communication device |
| CN102300148A (en) * | 2011-08-10 | 2011-12-28 | 美律电子(深圳)有限公司 | Electroacoustic transducer having sensing function |
| CN104124514A (en) * | 2014-08-08 | 2014-10-29 | 深圳市中兴移动通信有限公司 | Antenna assembly and mobile terminal |
| WO2015172483A1 (en) * | 2014-05-15 | 2015-11-19 | 中兴通讯股份有限公司 | Near field communication device and working method, mobile terminal thereof |
| CN106229610A (en) * | 2016-07-21 | 2016-12-14 | 宇龙计算机通信科技(深圳)有限公司 | A kind of mobile terminal, near-field communication aerial and method to set up |
-
2009
- 2009-09-28 CN CN2009202052109U patent/CN201590875U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102082838A (en) * | 2011-01-24 | 2011-06-01 | 中兴通讯股份有限公司 | Wireless communication device |
| CN102300148A (en) * | 2011-08-10 | 2011-12-28 | 美律电子(深圳)有限公司 | Electroacoustic transducer having sensing function |
| CN102300148B (en) * | 2011-08-10 | 2015-04-01 | 美律电子(深圳)有限公司 | Electroacoustic transducer having sensing function |
| WO2015172483A1 (en) * | 2014-05-15 | 2015-11-19 | 中兴通讯股份有限公司 | Near field communication device and working method, mobile terminal thereof |
| CN104124514A (en) * | 2014-08-08 | 2014-10-29 | 深圳市中兴移动通信有限公司 | Antenna assembly and mobile terminal |
| CN106229610A (en) * | 2016-07-21 | 2016-12-14 | 宇龙计算机通信科技(深圳)有限公司 | A kind of mobile terminal, near-field communication aerial and method to set up |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100922 |
|
| CX01 | Expiry of patent term |