CN102610914B - China Mobile Multimedia Broadcasting (CMMB) antenna - Google Patents
China Mobile Multimedia Broadcasting (CMMB) antenna Download PDFInfo
- Publication number
- CN102610914B CN102610914B CN201210091546.3A CN201210091546A CN102610914B CN 102610914 B CN102610914 B CN 102610914B CN 201210091546 A CN201210091546 A CN 201210091546A CN 102610914 B CN102610914 B CN 102610914B
- Authority
- CN
- China
- Prior art keywords
- cmmb
- antenna
- mobile terminal
- screen
- signal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Support Of Aerials (AREA)
- Details Of Aerials (AREA)
- Telephone Set Structure (AREA)
Abstract
The invention discloses a China Mobile Multimedia Broadcasting (CMMB) antenna, which comprises a shielding layer which wraps an headphone cable, wherein the length of the shielding layer is a quarter of the wavelength of a CMMB signal; the shielding layer is connected with an output end of an earphone; and the output end is connected with a mobile terminal through a magnetic bead. According to the CMMB antenna, the function of receiving the CMMB signal by wrapping the headphone cable through the shielding layer is realized, so that the headphone cable of the mobile terminal can be made as the CMMB antenna, in this way, the manufacturing cost of the CMMB antenna is reduced, and when the user is in need, the CMMB antenna can be used for listening to broadcasting and television programs anytime and anywhere. Therefore, the CMMB antenna ensures the attractiveness of the mobile terminal while providing convenience for the user.
Description
Technical field
The present invention relates to a kind of CMMB antenna, particularly relate to a kind of CMMB antenna utilizing the earphone cord of mobile terminal to be made into.
Background technology
China Mobile multimedia broadcasting (CMMB, China Mobile Multimedia Broadcasting) be the system of first set towards multiple mobile terminals such as mobile phone, PDA (palmtop PC), MP4 (Multifunctional player), digital camera, notebook computers of China's independent research, and Incorporate covers, whole nation roaming to utilize S-band signal to realize, support many cover TV programme and broadcast program, therefore CMMB more and more welcomed by the people.And the present CMMB antenna being used for receiving CMMB signal is all generally external telescopic antenna or built-in metal chip antenna, therefore manufacturing cost is higher, and if user wants to watch broadcast TV program by CMMB antenna, a CMMB antenna must be bought specially, CMMB antenna also may be needed to be placed on the mobile terminals such as mobile phone, not only increase the cost of user like this, also have impact on the attractive in appearance of mobile terminal.
Summary of the invention
The technical problem to be solved in the present invention is all external telescopic antenna or built-in metal chip antenna to overcome CMMB antenna in prior art, when causing user to watch broadcast TV program by CMMB antenna, cost improves and affects the defect attractive in appearance of mobile terminal, provides a kind of CMMB antenna utilizing the earphone cord of mobile terminal to be made into.
The present invention solves above-mentioned technical problem by following technical proposals:
The invention provides a kind of CMMB antenna, its feature is, it comprises the screen of parcel one earphone cord, the length of described screen is 1/4th of the wavelength of CMMB signal, described screen is connected with an output of described earphone, and described output is connected with a mobile terminal by a magnetic bead.
By by the length setting of described screen be CMMB signal wavelength 1/4th, and utilize described screen to wrap described earphone cord, again the output of described screen with described earphone is connected, namely be connected with the ground of described earphone, described like this screen just can receive CMMB signal together with described earphone cord, namely achieves the function of CMMB antenna.
And described output is connected with described mobile terminal by described magnetic bead, namely be connected with the ground of the mainboard of described mobile terminal, utilize magnetic bead that the low frequency signal passed through is presented to Low ESR, the high-frequency signal passed through presented to the performance of high impedance, add the working frequency range of CMMB in the high-frequency range of 470MHz-798MHz, the high frequency CMMB signal that described CMMB antenna just can be made to receive flows to the input port of CMMB antenna, thus effectively prevent described CMMB signal and directly enter ground.
Preferably, described in the frequency range of described CMMB signal, the impedance of magnetic bead is greater than 500 ohm.
Preferably, the length range of described screen is 0.1-0.25m.
Preferably, the length of described screen is 0.16m.
Preferably, described output is connected by the ground of described magnetic bead with the mainboard of described mobile terminal.
Preferably, described screen is a copper shield or the zinc-plated screen of a bronze medal.By the material of described screen composition is set to fine copper or copper zinc-plated, that section of earphone cord of described screen and parcel just can be made can to realize being similar to the function of coaxial cable, this belongs to the common technology means of this area, thus prevent the CMMB signal received outwards launch and produce loss, ensure the quality of CMMB signal.
Positive progressive effect of the present invention is: the present invention utilizes screen parcel earphone cord to realize receiving the function of CMMB signal, thus the earphone cord of mobile terminal has been made into CMMB antenna, reduce the manufacturing cost of CMMB antenna, and user can be made to utilize when needs CMMB antenna of the present invention to carry out broadcast listening TV programme whenever and wherever possible, while providing convenience to user, also ensure that the attractive in appearance of mobile terminal.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the CMMB antenna of a mobile terminal of a preferred embodiment of the present invention.
Embodiment
Present pre-ferred embodiments is provided, to describe technical scheme of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the CMMB antenna of preferred embodiment of the present invention comprises the screen 1 having wrapped up an earphone cord 2, the length of described screen 1 is 1/4th of the wavelength of CMMB signal, described screen 1 is connected with an output 3 of described earphone, and described output 3 is connected with a mobile terminal 5 by a magnetic bead 4.
The working frequency range of CMMB is in the scope of 470MHz-798MHz, and the wavelength of CMMB signal is calculated by frequency meter, and the length of described screen 1 is set to 1/4th of CMMB signal wavelength, can show that the length range of described screen 1 can be 0.1-0.25m, and when the length value of described screen 1 is 0.16m, the CMMB signal that the CMMB antenna be made into receives comparatively speaking can be stronger, and the performance of the CMMB antenna produced can be better.
And utilize described screen 1 to wrap described earphone cord 2, again described screen 1 is connected with described output 3, namely be connected with the ground of described earphone, add the setting of the length to described screen 1, can realize receiving CMMB signal once working by described screen 1 and described earphone cord 2 like this, namely achieving the function of CMMB antenna.
And the performance of described magnetic bead 4 is when the signal frequency passed through is low, impedance can be very little, and impedance can be very large when the signal frequency passed through is high.In the present invention, the signal impedance for below 20KHz just can be adopted to be less than 1 ohm, and the magnetic bead of 500 ohm is just greater than for the signal impedance of 400-800MHz.Like this, when described output 3 is connected with described mobile terminal 5 by described magnetic bead 4, when being namely connected with the ground of the mainboard in described mobile terminal 5, if utilize above-mentioned CMMB antenna to have received CMMB signal, again because the working frequency range of CMMB is in the high-frequency range of 470MHz-798MHz, like this, the impedance of described magnetic bead 4 will be greater than 500 ohm, and the high frequency CMMB signal that the magnetic bead of high impedance just can make described CMMB antenna receive flows to the input port of CMMB antenna, thus effectively prevent described CMMB signal and directly enter ground.
Wherein, the material of described screen consists of fine copper or is that copper is zinc-plated, thus the setting of coaxial cable just can be similar to described screen 1 and that section of earphone cord of parcel, this belongs to the common technology means of this area, and then just can effectively prevent the CMMB signal received from outwards launching and producing loss, ensure the quality of CMMB signal, thus make user that the CMMB antenna of described mobile terminal 5 can be utilized whenever and wherever possible to watch broadcast TV program.
Although the foregoing describe the specific embodiment of the present invention, it will be understood by those of skill in the art that these only illustrate, protection scope of the present invention is defined by the appended claims.Those skilled in the art, under the prerequisite not deviating from principle of the present invention and essence, can make various changes or modifications to these execution modes, but these change and amendment all falls into protection scope of the present invention.
Claims (4)
1. a CMMB antenna, it is characterized in that, it comprises the screen of parcel one earphone cord, the length of described screen is 1/4th of the wavelength of CMMB signal, described screen is connected with an output of described earphone, described output is connected with a mobile terminal by a magnetic bead, and described in the frequency range of described CMMB signal, the impedance of magnetic bead is greater than 500 ohm, and described output is connected by the ground of described magnetic bead with the mainboard of described mobile terminal.
2. CMMB antenna as claimed in claim 1, it is characterized in that, the length range of described screen is 0.1-0.25m.
3. CMMB antenna as claimed in claim 1, it is characterized in that, the length of described screen is 0.16m.
4. as the CMMB antenna in claim 1-3 as described in any one, it is characterized in that, described screen is a copper shield or the zinc-plated screen of a bronze medal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091546.3A CN102610914B (en) | 2012-03-30 | 2012-03-30 | China Mobile Multimedia Broadcasting (CMMB) antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210091546.3A CN102610914B (en) | 2012-03-30 | 2012-03-30 | China Mobile Multimedia Broadcasting (CMMB) antenna |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102610914A CN102610914A (en) | 2012-07-25 |
| CN102610914B true CN102610914B (en) | 2015-03-11 |
Family
ID=46528148
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210091546.3A Active CN102610914B (en) | 2012-03-30 | 2012-03-30 | China Mobile Multimedia Broadcasting (CMMB) antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102610914B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202759014U (en) * | 2012-08-09 | 2013-02-27 | 中兴通讯股份有限公司 | CMMB antenna device and terminal sharing terminal headset FM function |
| CN102904002B (en) * | 2012-10-31 | 2014-12-03 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1691411A (en) * | 2004-04-19 | 2005-11-02 | 索尼株式会社 | Earphone antenna and portable radio equipment provided with earphone antenna |
| CN1707854A (en) * | 2004-06-04 | 2005-12-14 | 索尼株式会社 | Earphone antenna and portable radio equipment provided with earphone antenna |
| CN201252633Y (en) * | 2008-07-10 | 2009-06-03 | 比亚迪股份有限公司 | Ear piece |
| CN202513283U (en) * | 2012-03-30 | 2012-10-31 | 上海华勤通讯技术有限公司 | China mobile multimedia broadcasting (CMMB) antenna of mobile terminal |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101645300A (en) * | 2009-05-15 | 2010-02-10 | 上海闻泰电子科技有限公司 | Multimedia shared mobile terminal supporting double-interface |
| CN102394367A (en) * | 2011-07-15 | 2012-03-28 | 上海安费诺永亿通讯电子有限公司 | Earphone antenna used for China mobile multimedia broadcasting |
-
2012
- 2012-03-30 CN CN201210091546.3A patent/CN102610914B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1691411A (en) * | 2004-04-19 | 2005-11-02 | 索尼株式会社 | Earphone antenna and portable radio equipment provided with earphone antenna |
| CN1707854A (en) * | 2004-06-04 | 2005-12-14 | 索尼株式会社 | Earphone antenna and portable radio equipment provided with earphone antenna |
| CN201252633Y (en) * | 2008-07-10 | 2009-06-03 | 比亚迪股份有限公司 | Ear piece |
| CN202513283U (en) * | 2012-03-30 | 2012-10-31 | 上海华勤通讯技术有限公司 | China mobile multimedia broadcasting (CMMB) antenna of mobile terminal |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102610914A (en) | 2012-07-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7907095B2 (en) | Antenna device | |
| US8712072B2 (en) | Multi-wired antenna for mobile apparatus | |
| US7559803B2 (en) | Connection structure and signal transmission cable | |
| US8848104B2 (en) | Whip antenna for mobile communication devices | |
| CN201571097U (en) | Terminal integrated with antenna and mobile phone support | |
| CN102610914B (en) | China Mobile Multimedia Broadcasting (CMMB) antenna | |
| CN101894562A (en) | Method and terminal for reducing influence of environment noise on video | |
| KR20120097629A (en) | Earphone antenna of a portable terminal | |
| CN202513283U (en) | China mobile multimedia broadcasting (CMMB) antenna of mobile terminal | |
| CN202979214U (en) | Sound box | |
| CN203775349U (en) | Television signal receiving socket | |
| US20090052720A1 (en) | Earphone connection cable and portable device provided with the same | |
| CN202651357U (en) | CMMB antenna of mobile terminal | |
| CN201114204Y (en) | Mobile equipment | |
| CN102625488A (en) | Mobile terminal | |
| KR101853123B1 (en) | Earphone antenna device | |
| CN2798446Y (en) | Wireless receiver with open and close type antenna structure | |
| CN203180077U (en) | Antenna with earphone connector | |
| CN102394367A (en) | Earphone antenna used for China mobile multimedia broadcasting | |
| CN202374260U (en) | Mobile communication terminal | |
| CN102725907B (en) | CMMB antenna, CMMB earphone antenna and mobile terminal | |
| CN202423562U (en) | Earphone antenna | |
| CN202737092U (en) | Mobile terminal built-in antenna system and mobile terminal | |
| CN204968047U (en) | Dull and stereotyped digital mobile TV of intelligence | |
| KR101376608B1 (en) | Mobile communication device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 201203 Shanghai city Pudong New Area Zhangjiang Keyuan Road No. 399 Building No. 1 Patentee after: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. Address before: 201203 Shanghai city Pudong New Area Zhangjiang Keyuan Road No. 399 Building No. 1 Patentee before: SHANGHAI HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Patentee after: Huaqin Technology Co.,Ltd. Address before: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Patentee before: Huaqin Technology Co.,Ltd. |
|
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: Building 1, No. 399 Keyuan Road, Zhangjiang hi tech park, Pudong New Area, Shanghai, 201203 Patentee after: Huaqin Technology Co.,Ltd. Address before: 201203 Building 1, 399 Zhangyuan Road, Zhangjiang, Pudong New Area, Shanghai Patentee before: HUAQIN TELECOM TECHNOLOGY Co.,Ltd. |