CN206259922U - RF front-end module and mobile terminal - Google Patents
RF front-end module and mobile terminal Download PDFInfo
- Publication number
- CN206259922U CN206259922U CN201621257121.5U CN201621257121U CN206259922U CN 206259922 U CN206259922 U CN 206259922U CN 201621257121 U CN201621257121 U CN 201621257121U CN 206259922 U CN206259922 U CN 206259922U
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- switch
- antenna
- trapper
- antenna tuning
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- 230000006854 communication Effects 0.000 abstract description 24
- 238000004891 communication Methods 0.000 abstract description 22
- 239000000203 mixture Substances 0.000 abstract description 3
- 238000001914 filtration Methods 0.000 abstract 1
- 230000005611 electricity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000001629 suppression Effects 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009432 framing Methods 0.000 description 3
- 230000005855 radiation Effects 0.000 description 3
- 230000001413 cellular effect Effects 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
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Abstract
The utility model is related to a kind of RF front-end module and mobile terminal.RF front-end module includes the sending module, antenna tuning switch, trapper and the antenna that are sequentially connected electrically；Wherein, at least one output end in antenna tuning switch is provided with the trapper, for exporting the dominant frequency signal of the radiofrequency signal and filtering spurious frequency signal.By adjusting the corresponding resonance point of trapper, the secondary or triple-frequency harmonics composition beyond the GSM850/900 that sending module or antenna are produced is eliminated just, to reach the spuious surplus of lifting, only export the dominant frequency signal of radiofrequency signal.Meanwhile, the narrow bandwidth of trapper, it is strong (more than 30dB) to secondary or triple-frequency harmonics rejection ability, and will not bring differential loss to the dominant frequency communication frequency band signal frequency range of radiofrequency signal, it is ensured that communication quality, and occupy little space, low cost.
Description
Technical field
The utility model is related to radio communication technology field, more particularly to RF front-end module and mobile terminal.
Background technology
Mobile terminal can be used remote radio communication circuit system (such as cell phone circuit system) to utilize honeycomb electricity
Voice frequency band is communicated.Mobile terminal can be used short-distance wireless communication circuit system (such as wireless LAN communication circuit system)
To process the communication with neighbouring device.Mobile terminal can also have satellite navigation system receiver and other radio-circuit systems.
When being communicated using cellular telephone band, it is general use be low-frequency range communication (GSM850/900), but
The device of radio-frequency front-end can produce secondary or triple-frequency harmonics radiation dispersion in communication process.Traditional processing mode includes：
First, the Power Amplifier Unit part in the RF front-end module of mobile terminal is in itself to secondary and triple-frequency harmonics suppression, its
Inhibition is poor, with uncontrollability；Second, being above standard when radiation dispersion surplus or when already close to standard, just
These spuious harmonic waves can be derived or blocked by pasting corresponding electromagnetic interference material, increase volume, the cost of device
It is high.
Utility model content
Based on this, it is necessary to regarding to the issue above, there is provided before a kind of low cost and the good radio frequency of suppression radiation dispersion effect
End module and mobile terminal.
A kind of RF front-end module, including sending module, antenna tuning switch, trapper and the day being sequentially connected electrically
Line；Wherein,
The sending module is amplified and output channel selection signal to the radiofrequency signal for receiving；
The antenna tuning is switched for the radiofrequency signal to be tuned into correspondence respectively according to the channel selecting signal
Antenna；
At least one output end of antenna tuning switch is provided with the trapper, for exporting the radio frequency letter
Number dominant frequency signal and filter spurious frequency signal.
Above-mentioned RF front-end module, including sending module, antenna tuning switch, trapper and the antenna being sequentially connected electrically,
At least one output end of antenna tuning switch is provided with the trapper.By adjusting the corresponding resonance of trapper
Point, eliminates the secondary or triple-frequency harmonics composition beyond the GSM850/900 that sending module or antenna are produced just, is carried with reaching
Spuious surplus is risen, the dominant frequency signal of radiofrequency signal is only exported.Meanwhile, the narrow bandwidth of trapper, its to it is secondary or three times it is humorous
The rejection ability of ripple is strong (more than 30dB), and will not bring differential loss to the dominant frequency communication frequency band signal frequency range of radiofrequency signal, protects
Demonstrate,proved communication quality, and occupy little space, low cost.
Wherein in one embodiment, multiple trappers are provided with least one output end of antenna tuning switch,
Wherein, the resonant parameter of each trapper is different.
Wherein in one embodiment, the trapper includes first electric capacity and the first inductance of series connection, first electricity
One end of appearance is connected with antenna tuning switch, antenna respectively, and the other end of first electric capacity connects through first inductance
Ground.
Wherein in one embodiment, the trapper includes the second electric capacity and the second inductance in parallel, the trapper
It is connected between the antenna tuning switch and the antenna.
Wherein in one embodiment, the antenna tuning switch is single-pole double-throw switch (SPDT), SP3T switch or hilted broadsword
Four throw switches.
Wherein in one embodiment, the sending module includes Power Amplifier Unit and RF switch, the power
Amplifier unit, RF switch, antenna tuning switch are sequentially connected electrically；
The Power Amplifier Unit is used to amplify the power of the radiofrequency signal；
The RF switch is used to switch the radiofrequency signal and exports the channel selecting signal.
Wherein in one embodiment, the Power Amplifier Unit and the RF switch are integrated in one.
Wherein in one embodiment, also including making what the RF switch and the antenna tuning hindrance matched
Match circuit, the match circuit is serially connected between the RF switch and antenna tuning switch.
Wherein in one embodiment, the radiofrequency signal includes any in GSM850/900/1800/1900 megahertzs
Plant or be combined.
Additionally, also providing a kind of mobile terminal, above-mentioned RF front-end module is integrated with.
Brief description of the drawings
Fig. 1 is the structural framing figure of RF front-end module in an embodiment；
Fig. 2 is the structural framing figure of RF front-end module in another embodiment；
Fig. 3 is the circuit diagram of trapper in an embodiment；
Fig. 4 is the simulated effect figure of trapper in Fig. 3；
Fig. 5 is the circuit diagram of trapper in another embodiment；
Fig. 6 is the circuit diagram of trapper in another embodiment；
Fig. 7 is the schematic diagram of mobile terminal in another embodiment.
Specific embodiment
For the ease of understanding the utility model, the utility model is more fully retouched below with reference to relevant drawings
State.Preferred embodiment of the present utility model is given in accompanying drawing.But, the utility model can come real in many different forms
It is existing, however it is not limited to embodiment described herein.On the contrary, the purpose for providing these embodiments is made to public affairs of the present utility model
The understanding for opening content is more thorough comprehensive.
Unless otherwise defined, all of technologies and scientific terms used here by the article is led with technology of the present utility model is belonged to
The implication that the technical staff in domain is generally understood that is identical.It is herein to be in term used in the description of the present utility model
The purpose of description specific embodiment, it is not intended that limitation the utility model.Term as used herein "and/or" includes one
The arbitrary and all of combination of individual or multiple related Listed Items.
As shown in Figure 1 is the structural framing figure of RF front-end module in an embodiment, and RF front-end module 10 includes hair
Module 110, antenna tuning is sent to switch 120, trapper 130 and antenna 140.Sending module 110, antenna tuning switch 120, trap
Device 130, antenna 140 are sequentially connected electrically.
Wherein, trapper 130 is arranged at least one output end of antenna tuning switch 120, by adjusting trapper 130
Corresponding resonance point, can just eliminate secondary beyond the GSM850/900 that sending module 110 or antenna 140 are produced or three
Subharmonic composition, to reach the spuious surplus of lifting, only exports the dominant frequency signal of radiofrequency signal.Meanwhile, the bandwidth of trapper 130
Narrow, it is strong (more than 30dB) to secondary or triple-frequency harmonics rejection ability, and will not communicate frequency to the dominant frequency of radiofrequency signal
Segment signal frequency range brings differential loss, it is ensured that communication quality, occupies little space, and low cost.
The radiofrequency signal of 110 pairs of receptions of sending module is amplified and output channel selection signal；Wherein, radio-frequency signal source
From in modem, its radiofrequency signal includes any one or any combination in GSM850/900/1800/1900 megahertzs.
Sending module 110 includes Power Amplifier Unit 111 and RF switch 113；Power Amplifier Unit 111, radio frequency
Switch 113, antenna tuning switch 120 is sequentially connected electrically.In one embodiment, Power Amplifier Unit 111 includes multiple
Power amplifier, each power amplifier is amplified treatment to the power of the radiofrequency signal of different frequency range respectively, you can output is more
The radiofrequency signal (GSM850/900/1800/1900) of individual different communication frequency bands.RF switch 113 switches multiple different communication frequencies
The radiofrequency signal of section simultaneously exports corresponding channel selecting signal to antenna tuning switch 120.RF switch 113 be hilted broadsword more throw out
Close, the output end connection corresponding with multiple inputs of RF switch 113 respectively of its each Power Amplifier Unit 111, it is penetrated
The particular type of frequency switch 113 can set according to the actual demand of radiofrequency signal communication frequency band.
In the present embodiment, Power Amplifier Unit 111 and RF switch 113 are integrated in one, and its integrated level is high, volume
It is small.In other embodiments, Power Amplifier Unit 111 can be separately provided with RF switch 113 with discrete.
Antenna tuning switchs 120 receiving channel selection signals, and is tuned radiofrequency signal respectively according to channel selecting signal
To respective antenna 140.Antenna tuning switch 120 is single-pole double-throw switch (SPDT), SP3T switch or the throw switch of hilted broadsword four.In this reality
Apply in example, antenna tuning switchs 120 for the throw switch of hilted broadsword four, including a common port and four output ends, its common port or so
The input of antenna tuning switch 120, the output end with RF switch 113 is connected.Four output ends connect with antenna 140 respectively
Connect.
In one embodiment, with reference to Fig. 2, RF front-end module 10 also includes match circuit 150.Match circuit 150 is concatenated
Between RF switch 113 and antenna tuning switch 120, make the connectivity port of RF switch 113 and antenna tuning switch 120
50 ohm are fitted on, make its matches impedances.
In the present embodiment, with reference to Fig. 3, trapper 130 includes the first electric capacity C1 and the first inductance L1 of series connection.First electricity
The one end for holding C1 is connected with antenna tuning switch 120, antenna 140 respectively, and the other end of the first electric capacity C1 connects through the first inductance L1
Ground, that is, in antenna tuning switch 120 and input port one trapper 130 of parallel connection of the matching of antenna 140.With reference to Fig. 4, lead to
One trapper of parallel connection 130 of setting is crossed, can be eliminated beyond the GSM850/900 that sending module 110 or antenna 140 are produced
Triple-frequency harmonics, the rejection ability to triple-frequency harmonics can be stronger, can reach more than 30dB.Meanwhile, the dominant frequency communication to radiofrequency signal
Frequency range will not bring Insertion Loss, protect communication quality.
Because trapper 130 is connected in parallel between the input port of antenna tuning switch 120 and the matching of antenna 140, will not
Influence the conducting of circuit.Between other output ends of antenna tuning switch 120 and the input port of the matching of antenna 140, may be used also
To reserve corresponding position, without any device, in later stage communication process, if a certain communication frequency band occur it is secondary or three times
Harmonic wave, then trapper 130 is added, to realize to secondary or triple-frequency harmonics suppression.
In one embodiment, with reference to Fig. 5, can also be simultaneously in the input port of antenna tuning switch 120 and the matching of antenna 140
Two trappers (130,130 ') of connection, the electricity of capacitance and the first inductance (L1, L1 ') by adjusting the first electric capacity (C1, C1 ')
Inductance value changes the resonant parameter of trapper (130,130 '), you can while secondary beyond eliminating GSM850/900 and three times
Harmonic wave.Because trapper 130 is connected in parallel between the input port of antenna tuning switch 120 and the matching of antenna 140, electricity is not interfered with
The conducting on road, during subsequent communications, if occurring second harmonic and triple-frequency harmonics simultaneously, it is only necessary to increase in original path
Plus a trapper 130 ' with suppression second harmonic or triple-frequency harmonics.Wherein, the quantity of trapper 130 can basis
Actual suppresses secondary or triple-frequency harmonics effect to set, however it is not limited to this.
In one embodiment, with reference to Fig. 6, trapper 130 " can also be connected on antenna tuning switch 120 and antenna 140 it
Between, trapper 130 " including the second electric capacity C2 and the second inductance L2 in parallel, wherein, the position of the second electric capacity C2 and the second inductance L2
Putting to exchange.By setting a trapper 130 for series connection ", it is also possible to eliminate what sending module 110 or antenna 140 were produced
Secondary or triple-frequency harmonics beyond GSM850/900 is strong to secondary or triple-frequency harmonics rejection ability.Meanwhile, to radiofrequency signal
Dominant frequency communications band will not bring Insertion Loss, protect communication quality.In other embodiments, the quantity of trapper 130 " can basis
Actual demand sets.
Additionally, also providing a kind of mobile terminal 20, the radio-frequency front-end mould in the various embodiments described above is integrated with mobile terminal
Block 10.With reference to Fig. 7, the mobile terminal of RF front-end module is provided with, mobile terminal can be (including so-called for Mobile or cellular telephone
" smart phone "), flat board and laptop computer, wearable communication equipment, USB dongle or other with wireless communication function
Terminal.The mobile terminal also possesses above-mentioned RF front-end module identical beneficial effect, repeats no more.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses several embodiments of the present utility model, and its description is more specific and detailed,
But therefore can not be interpreted as the limitation to utility model patent scope.It should be pointed out that for the common skill of this area
For art personnel, without departing from the concept of the premise utility, various modifications and improvements can be made, these are belonged to
Protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be determined by the appended claims.
Claims (10)
1. a kind of RF front-end module, it is characterised in that including the sending module, antenna tuning switch, the trap that are sequentially connected electrically
Device and antenna；Wherein,
The sending module is amplified and output channel selection signal to the radiofrequency signal for receiving；
The antenna tuning is switched for the radiofrequency signal to be tuned into respective antenna respectively according to the channel selecting signal；
At least one output end of antenna tuning switch is provided with the trapper, for exporting the radiofrequency signal
Dominant frequency signal simultaneously filters spurious frequency signal.
2. RF front-end module according to claim 1, it is characterised in that at least one of antenna tuning switch
Output end is provided with multiple trappers, wherein, the resonant parameter of each trapper is different.
3. RF front-end module according to claim 1, it is characterised in that the trapper includes the first electric capacity of series connection
With the first inductance, one end of first electric capacity is connected with antenna tuning switch, antenna respectively, first electric capacity it is another
One end is grounded through first inductance.
4. RF front-end module according to claim 1, it is characterised in that the trapper includes the second electric capacity in parallel
With the second inductance, the trapper is connected between antenna tuning switch and the antenna.
5. RF front-end module according to claim 1, it is characterised in that the antenna tuning switch is opened for single-pole double throw
Pass, SP3T switch or the throw switch of hilted broadsword four.
6. RF front-end module according to claim 1, it is characterised in that the sending module includes power amplifier list
Unit and RF switch, the Power Amplifier Unit, RF switch, antenna tuning switch are sequentially connected electrically；
The Power Amplifier Unit is used to amplify the power of the radiofrequency signal；
The RF switch is used to switch the radiofrequency signal and exports the channel selecting signal.
7. RF front-end module according to claim 6, it is characterised in that the Power Amplifier Unit and the radio frequency
Switch is integrated in one.
8. RF front-end module according to claim 6, it is characterised in that also including making the RF switch with the day
The match circuit of line tuning switch matches impedances, the match circuit is serially connected in the RF switch and is opened with the antenna tuning
Between pass.
9. RF front-end module according to claim 1, it is characterised in that the radiofrequency signal includes GSM850/900/
Any one in 1800/1900 megahertz or any combination.
10. a kind of mobile terminal, it is characterised in that be integrated with the radio-frequency front-end mould as any one of claim 1~9
Block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621257121.5U CN206259922U (en) | 2016-11-22 | 2016-11-22 | RF front-end module and mobile terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621257121.5U CN206259922U (en) | 2016-11-22 | 2016-11-22 | RF front-end module and mobile terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206259922U true CN206259922U (en) | 2017-06-16 |
Family
ID=59025524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621257121.5U Expired - Fee Related CN206259922U (en) | 2016-11-22 | 2016-11-22 | RF front-end module and mobile terminal |
Country Status (1)
| Country | Link |
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| CN (1) | CN206259922U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517060A (en) * | 2017-09-25 | 2017-12-26 | 尚睿微电子（上海）有限公司 | A kind of method of radio-frequency switch circuit and processing radiofrequency signal |
| CN107887685A (en) * | 2017-11-30 | 2018-04-06 | 广东欧珀移动通信有限公司 | Antenna assembly and mobile terminal |
| CN108063307A (en) * | 2017-12-14 | 2018-05-22 | 广东欧珀移动通信有限公司 | Antenna tuning circuit and mobile terminal |
| CN108183331A (en) * | 2017-12-14 | 2018-06-19 | 广东欧珀移动通信有限公司 | Antenna tuning circuit, antenna assembly and mobile terminal |
| CN108337005A (en) * | 2018-01-08 | 2018-07-27 | 广东欧珀移动通信有限公司 | Antenna tuning circuit and electronic device |
| CN108540164A (en) * | 2018-04-08 | 2018-09-14 | 广州慧智微电子有限公司 | A kind of radio-frequency front-end system |
| CN110730013A (en) * | 2019-09-25 | 2020-01-24 | 维沃移动通信有限公司 | Method for improving transmission stray and mobile terminal |
| CN111464204A (en) * | 2020-03-04 | 2020-07-28 | 深圳市广和通无线股份有限公司 | Radio frequency circuit and antenna tuning circuit |
| CN113992215A (en) * | 2021-10-22 | 2022-01-28 | 闻泰通讯股份有限公司 | Radio frequency front end transmitting module and adaptive adjusting method of out-of-band spurious emission thereof |
| CN115664441A (en) * | 2022-10-21 | 2023-01-31 | 电子科技大学 | High dynamic range receiver and receiving method based on N-Path wave trap |
-
2016
- 2016-11-22 CN CN201621257121.5U patent/CN206259922U/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107517060A (en) * | 2017-09-25 | 2017-12-26 | 尚睿微电子（上海）有限公司 | A kind of method of radio-frequency switch circuit and processing radiofrequency signal |
| CN107887685A (en) * | 2017-11-30 | 2018-04-06 | 广东欧珀移动通信有限公司 | Antenna assembly and mobile terminal |
| CN108063307A (en) * | 2017-12-14 | 2018-05-22 | 广东欧珀移动通信有限公司 | Antenna tuning circuit and mobile terminal |
| CN108183331A (en) * | 2017-12-14 | 2018-06-19 | 广东欧珀移动通信有限公司 | Antenna tuning circuit, antenna assembly and mobile terminal |
| CN108183331B (en) * | 2017-12-14 | 2020-12-01 | Oppo广东移动通信有限公司 | Antenna tuning circuit, antenna device and mobile terminal |
| CN108063307B (en) * | 2017-12-14 | 2020-04-21 | Oppo广东移动通信有限公司 | Antenna tuning circuit and mobile terminal |
| CN108337005B (en) * | 2018-01-08 | 2020-01-14 | Oppo广东移动通信有限公司 | Antenna tuning circuit and electronic device |
| CN108337005A (en) * | 2018-01-08 | 2018-07-27 | 广东欧珀移动通信有限公司 | Antenna tuning circuit and electronic device |
| CN108540164A (en) * | 2018-04-08 | 2018-09-14 | 广州慧智微电子有限公司 | A kind of radio-frequency front-end system |
| CN110730013A (en) * | 2019-09-25 | 2020-01-24 | 维沃移动通信有限公司 | Method for improving transmission stray and mobile terminal |
| CN111464204A (en) * | 2020-03-04 | 2020-07-28 | 深圳市广和通无线股份有限公司 | Radio frequency circuit and antenna tuning circuit |
| CN113992215A (en) * | 2021-10-22 | 2022-01-28 | 闻泰通讯股份有限公司 | Radio frequency front end transmitting module and adaptive adjusting method of out-of-band spurious emission thereof |
| CN115664441A (en) * | 2022-10-21 | 2023-01-31 | 电子科技大学 | High dynamic range receiver and receiving method based on N-Path wave trap |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20170616 |