CN101951268A - Method and device for improving performance of radio antenna - Google Patents
Method and device for improving performance of radio antenna Download PDFInfo
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- CN101951268A CN101951268A CN2010102370607A CN201010237060A CN101951268A CN 101951268 A CN101951268 A CN 101951268A CN 2010102370607 A CN2010102370607 A CN 2010102370607A CN 201010237060 A CN201010237060 A CN 201010237060A CN 101951268 A CN101951268 A CN 101951268A
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- ground wire
- channel line
- radio antenna
- capacitive device
- antenna performance
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Abstract
The invention relates to mobile equipment capable of being inserted with an earphone as audio output, and discloses a method and a device for improving the performance of a radio antenna. The device comprises an earphone connector, channel lines and an earth wire, wherein the channel lines and the earth wire are connected with the earphone connector respectively; the earth wire can be used for the access of FM antenna signals; and capacitive devices are arranged between the earth wire and each channel line respectively. In the method and the device for improving the performance of the radio antenna, the capacitive devices are added to introduce FM signals on a left channel, a right channel and a microphone cable onto the FM antenna signals so as to improve the signal strength and receiving sensitivity of the FM antenna and effectively improve the performance of the FM antenna; and the method and the device are proved by a plurality of products to have the advantages of simple structure, low manufacturing cost and easy implementation.
Description
Technical field
The present invention relates to insert the mobile device of earphone, in particular a kind of method and device that improves the radio antenna performance as audio frequency output.
Background technology
Present mobile phone, increasing integrated FM radio function in the mobile devices such as MP3, because external earphone cord is long, the relative built-in earphone of performance is relatively good, and, simplicity of design practicality (ground wire of FM antenna duplexer earphone), and external earphone has the function of listening to music concurrently, is the indispensable accessory of mobile phone.Yet, because the earth connection of FM antenna duplexer earphone, when listening to the FM program, the user receives the FM signal by ground wire again, and this ground wire becomes the holding wire of audio frequency and FM antenna duplexer, simultaneously, because the impedance of the loudspeaker of earphone is very little (general 32 ohm, perhaps 16 ohm), the left and right acoustic channels of earphone and Mike's line all become the part of FM antenna, so the energy of the useful signal that a part of FM antenna receives can lose by left and right acoustic channels and Mike's line loss of earphone, causes the sensitivity of FM antenna on the low side, poor signal, and then have influence on the effect that the user listens to the FM program
Therefore, prior art has yet to be improved and developed.
Summary of the invention
The technical problem to be solved in the present invention is, at the above-mentioned defective of prior art, provides a kind of method and device that improves the radio antenna performance, it has improved the signal strength signal intensity and the receiving sensitivity of broadcast receiver FM antenna, effectively improved the FM antenna performance, and simple in structure, realize easily.
The technical scheme that technical solution problem of the present invention is adopted is as follows:
A kind of device that can improve the radio antenna performance comprises headset connector, and sound channel line that is connected with described headset connector respectively and the ground wire that can be used as the access of FM aerial signal, wherein, is provided with capacitive device between described ground wire and described sound channel line.
The described device that can improve the radio antenna performance, wherein, described sound channel line comprises the L channel line, and is provided with first capacitive device between described L channel line and described ground wire.
The described device that can improve the radio antenna performance, wherein, described sound channel line comprises the R channel line, and is provided with second capacitive device between described R channel line and described ground wire.
The described device that can improve the radio antenna performance, wherein, it also comprises the MIC line that is connected with headset connector, and is provided with the 3rd capacitive device between described MIC line and described ground wire.
The described device that can improve the radio antenna performance, wherein, institute's capacitive device is an electric capacity, and its choosing value scope is 500pf～2nf.
A kind of method that improves the radio antenna performance wherein, comprises step: between ground wire and sound channel line capacitive device is set, by described capacitive device the FM signal on the sound channel line line is guided on the ground wire that can be used as the access of FM aerial signal.
The method of described raising radio antenna performance, wherein, it also comprises step: between MIC line and described ground wire the 3rd capacitive device is set.
The method of described raising radio antenna performance wherein, describedly is provided with capacitive device and specifically comprises step between ground wire and sound channel line:
Between L channel line and described ground wire, first capacitive device is set;
Between R channel line and described ground wire, second capacitive device is set.
The method of described raising radio antenna performance, wherein, institute's capacitive device is an electric capacity, and its choosing value scope is 500pf～2nf.
The method and the device of raising radio antenna performance provided by the present invention, by increasing capacitive device the FM signal on earphone left and right acoustic channels and the Mike's line is guided on the FM aerial signal, the signal strength signal intensity and the receiving sensitivity of FM antenna have been improved, effectively improved the FM antenna performance, and in many products, be verified, and simple in structure, cost of manufacture is low, realizes easily.
Description of drawings
Fig. 1 is the apparatus structure schematic diagram that can improve the radio antenna performance of the embodiment of the invention.
Embodiment
The method and the device of raising radio antenna performance provided by the present invention, clearer, clear and definite for making purpose of the present invention, technical scheme and advantage, below develop simultaneously with reference to accompanying drawing that the present invention is described in more detail for embodiment.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
A kind of device that can improve the radio antenna performance of the embodiment of the invention 1, be mainly used in the earphone interface circuit with the handheld mobile device of function of radio receiver, as shown in Figure 1, it comprises headset connector 100, and sound channel line that is connected with described headset connector 100 respectively and the ground wire 111 that can be used as the access of FM aerial signal.Headset connector described in the present embodiment 100 is for being arranged on the earphone socket on the mobile device, and its ground wire 111 connects with reference to ground by a jamproof buffer circuit.
When inserting earphone in the prior art and begin radio function, mainly insert the FM signal by the ground wire that connects earphone from ground wire, reach radio function, and the not strong problem of its radio receiver signal.During invention is implemented, be provided with capacitive device 120 between described ground wire 111 and the described sound channel line and strengthen function of radio receiver by being arranged on.As shown in Figure 1, described sound channel line comprises L channel line 113 and R channel line 112.And between described L channel line 113 and described ground wire 111, be provided with the first capacitive device C2.Between described R channel line 112 and described ground wire 111, be provided with the second capacitive device C1.
Some mobile device also has headset (MIC) line to connect microphone, and in the embodiment of the invention, it also comprises the MIC line 114 that is connected with headset connector 100, and is provided with the 3rd capacitive device C3 between described MIC line 114 and described ground wire 111.
In the embodiment of the invention, the described first capacitive device C2, the choosing value of the second capacitive device C1 and the 3rd capacitive device C3 (is 500pf～2nf) about 1NF, because this is that the resonance frequency of electric capacity is greatly about 100MHz, the frequency range that drops on receipts machine sound machine (FM) is (in the 76M～108MHz), and the tonal range that can hear away from people's ear (300Hz～3400Hz), so, the present invention can effectively dredge the signal of FM frequency range on the ground wire 111 (being FM aerial signal line) that can be used as the access of FM aerial signal from earphone left and right acoustic channels line and Mike's line, can not influence audio signal again, thereby the signal strength signal intensity and the receiving sensitivity of FM antenna have effectively been strengthened, effectively improved the FM antenna performance, and in many products, be verified, simultaneously, it is simple in structure, and cost of manufacture is low.
The device that can improve the radio antenna performance that second embodiment of the present invention provides, identical with the embodiment principle of front, what what is called was different is, front first embodiment is arranged in the earphone interface in the mobile device, and second embodiment is provided with capacitive device between sound channel line in existing earphone and the ground wire can reach above-mentioned effect equally.
The device that can improve the radio antenna performance is provided in second example, be earphone, comprise headset plug, and the earphone ground wire that can be used as the FM antenna and the earphone sound channel line that are connected with described headset plug, and between described earphone ground wire and described earphone sound channel line, be provided with capacitive device.Certainly, when earphone band microphone lines is arranged, can between described microphone lines and described ground wire, above-mentioned capacitive device be set equally.Its principle is identical with the principle of first embodiment, be not repeated in this description a bit.
Based on the foregoing description, the embodiment of the invention also provides a kind of method that improves the radio antenna performance, as shown in Figure 1, described method comprises step: between ground wire 111 and sound channel line capacitive device is set, by described capacitive device the FM signal on the sound channel line line is guided on the ground wire that can be used as the access of FM aerial signal.And the 3rd capacitive device C3 spare is set between MIC line 114 and described ground wire 111.
The method of described raising radio antenna performance, described sound channel line comprises L channel line 113 and R channel line 112, it is described to be provided with capacitive device and specifically to comprise step between ground wire and sound channel line:
The first capacitive device C2 is set between L channel line 113 and described ground wire 111;
Between R channel line and 112 described ground wires 111, the second capacitive device C3 is set.
The method of described raising radio antenna performance, wherein, institute's capacitive device is an electric capacity, and its choosing value scope is 500pf～2nf.
In sum, the method and the device of raising radio antenna performance provided by the present invention, by increasing capacitive device the FM signal on earphone left and right acoustic channels and the Mike's line is guided on the FM aerial signal, the signal strength signal intensity and the receiving sensitivity of FM antenna have been improved, effectively improved the FM antenna performance, and in many products, be verified, and simple in structure, cost of manufacture is low, realizes easily.
Should be understood that application of the present invention is not limited to above-mentioned giving an example, for those of ordinary skills, can be improved according to the above description or conversion that all these improvement and conversion all should belong to the protection range of claims of the present invention.
Claims (9)
1. device that can improve the radio antenna performance, comprise headset connector, and sound channel line that is connected with described headset connector respectively and the ground wire that can be used as the access of FM aerial signal, it is characterized in that, between described ground wire and described sound channel line, be provided with capacitive device.
2. according to the described device that can improve the radio antenna performance of claim 1, it is characterized in that described sound channel line comprises the L channel line, and between described L channel line and described ground wire, be provided with first capacitive device.
3. according to the described device that can improve the radio antenna performance of claim 1, it is characterized in that described sound channel line comprises the R channel line, and between described R channel line and described ground wire, be provided with second capacitive device.
4. according to the described device that can improve the radio antenna performance of claim 1, it is characterized in that it also comprises the MIC line that is connected with headset connector, and between described MIC line and described ground wire, be provided with the 3rd capacitive device.
5. according to the described device that can improve the radio antenna performance of claim 1, it is characterized in that institute's capacitive device is an electric capacity, and its choosing value scope is 500pf～2nf.
6. a method that improves the radio antenna performance is characterized in that, comprises step: between ground wire and sound channel line capacitive device is set, by described capacitive device the FM signal on the sound channel line line is guided on the ground wire that can be used as the access of FM aerial signal.
7. the method for raising radio antenna performance according to claim 6 is characterized in that, it also comprises step: between MIC line and described ground wire the 3rd capacitive device is set.
8. the method for raising radio antenna performance according to claim 6 is characterized in that, describedly between ground wire and sound channel line capacitive device is set and specifically comprises step:
Between L channel line and described ground wire, first capacitive device is set;
Between R channel line and described ground wire, second capacitive device is set.
9. the method for raising radio antenna performance according to claim 6 is characterized in that, institute's capacitive device is an electric capacity, and its choosing value scope is 500pf～2nf.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102370607A CN101951268A (en) | 2010-07-23 | 2010-07-23 | Method and device for improving performance of radio antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102370607A CN101951268A (en) | 2010-07-23 | 2010-07-23 | Method and device for improving performance of radio antenna |
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| Publication Number | Publication Date |
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| CN101951268A true CN101951268A (en) | 2011-01-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010102370607A Pending CN101951268A (en) | 2010-07-23 | 2010-07-23 | Method and device for improving performance of radio antenna |
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| CN (1) | CN101951268A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104284274A (en) * | 2013-07-12 | 2015-01-14 | 深圳富泰宏精密工业有限公司 | Electronic device and voice frequency unit with same |
| CN104683903A (en) * | 2015-02-10 | 2015-06-03 | 小米科技有限责任公司 | Earphone control method and device |
| CN109474299A (en) * | 2018-10-18 | 2019-03-15 | 维沃移动通信有限公司 | A kind of antenna determines method and mobile terminal |
| CN110635861A (en) * | 2018-06-25 | 2019-12-31 | 易力声科技(深圳)有限公司 | Telephone radio antenna |
| CN111901727A (en) * | 2020-07-30 | 2020-11-06 | 维沃移动通信有限公司 | Audio control circuit and electronic equipment |
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| JP2005354275A (en) * | 2004-06-09 | 2005-12-22 | Hosiden Corp | Earphone microphone |
| CN1972009A (en) * | 2005-11-22 | 2007-05-30 | 索尼株式会社 | Receiver |
| CN101136643A (en) * | 2005-10-07 | 2008-03-05 | 索尼株式会社 | Earphone antenna |
| CN101316111A (en) * | 2008-07-23 | 2008-12-03 | 嘉兴闻泰通讯科技有限公司 | Mobile terminal headphone |
| CN100576757C (en) * | 2002-06-12 | 2009-12-30 | 诺基亚有限公司 | Electronic apparatus with audio connector that antenna function is provided |
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2010
- 2010-07-23 CN CN2010102370607A patent/CN101951268A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100576757C (en) * | 2002-06-12 | 2009-12-30 | 诺基亚有限公司 | Electronic apparatus with audio connector that antenna function is provided |
| JP2005354275A (en) * | 2004-06-09 | 2005-12-22 | Hosiden Corp | Earphone microphone |
| CN101136643A (en) * | 2005-10-07 | 2008-03-05 | 索尼株式会社 | Earphone antenna |
| CN1972009A (en) * | 2005-11-22 | 2007-05-30 | 索尼株式会社 | Receiver |
| CN101316111A (en) * | 2008-07-23 | 2008-12-03 | 嘉兴闻泰通讯科技有限公司 | Mobile terminal headphone |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104284274A (en) * | 2013-07-12 | 2015-01-14 | 深圳富泰宏精密工业有限公司 | Electronic device and voice frequency unit with same |
| CN104284274B (en) * | 2013-07-12 | 2018-12-04 | 深圳富泰宏精密工业有限公司 | The audio component of electronic device and the application electronic device |
| CN104683903A (en) * | 2015-02-10 | 2015-06-03 | 小米科技有限责任公司 | Earphone control method and device |
| CN110635861A (en) * | 2018-06-25 | 2019-12-31 | 易力声科技(深圳)有限公司 | Telephone radio antenna |
| CN109474299A (en) * | 2018-10-18 | 2019-03-15 | 维沃移动通信有限公司 | A kind of antenna determines method and mobile terminal |
| CN111901727A (en) * | 2020-07-30 | 2020-11-06 | 维沃移动通信有限公司 | Audio control circuit and electronic equipment |
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Application publication date: 20110119 |