CN106100652A - Mixed-dispel suppression device and method - Google Patents
Mixed-dispel suppression device and method Download PDFInfo
- Publication number
- CN106100652A CN106100652A CN201610379086.2A CN201610379086A CN106100652A CN 106100652 A CN106100652 A CN 106100652A CN 201610379086 A CN201610379086 A CN 201610379086A CN 106100652 A CN106100652 A CN 106100652A
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- Prior art keywords
- suppression circuit
- harmonic suppression
- electric capacity
- duplexer
- signal
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Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/02—Transmitters
- H04B1/04—Circuits
- H04B1/0475—Circuits with means for limiting noise, interference or distortion
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B1/1036—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal with automatic suppression of narrow band noise or interference, e.g. by using tuneable notch filters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/06—Receivers
- H04B1/10—Means associated with receiver for limiting or suppressing noise or interference
- H04B1/1027—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal
- H04B2001/1072—Means associated with receiver for limiting or suppressing noise or interference assessing signal quality or detecting noise/interference for the received signal by tuning the receiver frequency
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/02—Terminal devices
- H04W88/06—Terminal devices adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
Abstract
The present invention is applicable to communication technical field, particularly relates to mixed-dispel suppression device and method.This device includes: power amplifier, duplexer and harmonic suppression circuit；The outfan of power amplifier is connected with the transmitting terminal of duplexer, and the common port of duplexer is connected with the input of harmonic suppression circuit；Harmonic suppression circuit is for controlling the input impedance of harmonic suppression circuit and the output matches impedances of harmonic suppression circuit, and the resonant frequency controlling harmonic suppression circuit is identical with the tranmitting frequency of signal to be transmitted.The present invention, by arranging the harmonic suppression circuit being connected with the common port of duplexer, controls input impedance and the output matches impedances of harmonic suppression circuit；The resonant frequency controlling harmonic suppression circuit is identical with the tranmitting frequency of signal to be transmitted, thus make harmonic suppression circuit less on the impact of the tranmitting frequency of signal to be transmitted, and harmonic signal is had bigger decay such that it is able to reduce clutter interference, improve receiving sensitivity.
Description
Technical field
The invention belongs to communication technical field, particularly relate to a kind of mixed-dispel suppression device and method.
Background technology
Multimode multi-frequency mobile phone refers to the mobile phone that can use between the network of different technologies standard, and i.e. one mobile phone is permissible
Support multiple network standard simultaneously, support multiple network frequency range.Before multimode multi-frequency mobile phone occurs, general handheld device is led to
Often only support bimodulus, i.e. support GSM (Global System for Mobile communication, global mobile communication system
System) and TD-SCDMA (Time Division-Synchronous Code Division Multiple Access, the time-division is together
Step CDMA), or support GSM and WCDMA (Wideband Code Division Multiple Access, broadband code
Divide multiple access).And along with 4G (the 4thGeneration mobile communication technology, forth generation moves
Communication technology) appearance of network, start that substantial amounts of 4G cell phone occurs, these 4G cell phones can be supported on a mobile phone simultaneously
GSM, TD-SCDMA, WCDMA, TD-LTE (Time Division-Long Term Evolution, timesharing Long Term Evolution),
FDD-LTE (Frequency Division Duplex-Long Term Evolution, FDD Long Term Evolution) is even more
Many network formats and corresponding multiple frequency range.Additionally, Wi-Fi (Wireless the most also supported by current mobile phone
Fidelity, adopting wireless fidelity technology) and the frequency range of GPS (Global Position System, global positioning system) correspondence.
Easily there is clutter interference in the mobile phone supporting multiband.Clutter interference refers to the spuious spoke outside a system frequency range
Penetrating the interference caused in dropping into the reception frequency range of another one system, the higher hamonic wave of such as low-frequency range can fall at high band
In reception frequency range, the reception to high band interferes.Clutter interference directly affects the receiving sensitivity of system.Fall into if spuious
The amplitude that certain system receives in frequency range is higher, and the receiver of the most disturbed system cannot filter this spurious signal.Therefore,
Radio frequency certification needs to test spuious index.Spuious index and PCB (Printed Circuit Board, printed circuit board) layout
The performance of the device of wiring and selection has relatively Important Relations.Due at present for miniaturization, thickness and the one-tenth present aspect of mobile phone
Have higher requirements, make placement-and-routing's difficulty continue to increase, thus cause spuious problem more serious.
To sum up, prior art being supported, the clutter interference of the communication equipment of multiband is relatively big, causes receiving sensitivity
Affect bigger.
Summary of the invention
In consideration of it, embodiments provide a kind of mixed-dispel suppression device and method, to reduce clutter interference, raising connects
Receive sensitivity.
First aspect, embodiments provides a kind of mixed-dispel suppression device, including:
Power amplifier, duplexer and harmonic suppression circuit；
The outfan of described power amplifier is connected with the transmitting terminal of described duplexer, the common port of described duplexer and institute
The input stating harmonic suppression circuit is connected；
Described harmonic suppression circuit is for controlling the input impedance of described harmonic suppression circuit and described harmonic suppression circuit
Output matches impedances, and the resonant frequency controlling described harmonic suppression circuit is identical with the tranmitting frequency of signal to be transmitted.
Second aspect, embodiments provides a kind of spurious reduction method of mixed-dispel suppression device as above,
Including:
Obtain the tranmitting frequency of signal to be transmitted；
Regulation harmonic suppression circuit, makes the resonant frequency of described harmonic suppression circuit and the tranmitting frequency phase of signal to be transmitted
With；
Regulate described harmonic suppression circuit, make the input impedance of described harmonic suppression circuit and described harmonic suppression circuit
Output matches impedances.
The embodiment of the present invention compared with prior art exists and provides the benefit that: the embodiment of the present invention is by arranging and duplex
The harmonic suppression circuit that the common port of device is connected, controls the input impedance of harmonic suppression circuit and the output resistance of harmonic suppression circuit
Resist and match, thus make the common port of duplexer and the matches impedances of load end；Control the resonant frequency of harmonic suppression circuit
Identical with the tranmitting frequency of signal to be transmitted, thus make harmonic suppression circuit on the impact of the tranmitting frequency of signal to be transmitted relatively
Little, and harmonic signal is had bigger decay such that it is able to reduce clutter interference, improve receiving sensitivity.
Accompanying drawing explanation
For the technical scheme being illustrated more clearly that in the embodiment of the present invention, below will be to embodiment or description of the prior art
The accompanying drawing used required in is briefly described, it should be apparent that, the accompanying drawing in describing below is only some of the present invention
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to according to these
Accompanying drawing obtains other accompanying drawing.
Fig. 1 shows the structured flowchart of the mixed-dispel suppression device that the embodiment of the present invention provides；
Fig. 2 shows the schematic diagram of harmonic suppression circuit in the mixed-dispel suppression device that the embodiment of the present invention provides；
Fig. 3 shows the flowchart of the spurious reduction method that the embodiment of the present invention provides；
Fig. 4 shows the flowchart of the spurious reduction method that another embodiment of the present invention provides；
Fig. 5 shows the flowchart of the spurious reduction method that another embodiment of the present invention provides.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, right
The present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, and
It is not used in the restriction present invention.
Fig. 1 shows the structured flowchart of the mixed-dispel suppression device that the embodiment of the present invention provides, and for convenience of description, only illustrates
The part relevant to the embodiment of the present invention.As it is shown in figure 1, this device includes:
Power amplifier 11, duplexer 12 and harmonic suppression circuit 13, the outfan of power amplifier 11 and duplexer
The transmitting terminal of 12 is connected, and the common port of duplexer 12 is connected with the input of harmonic suppression circuit 13.
Wherein, harmonic suppression circuit 13 is for controlling input impedance and the harmonic suppression circuit 13 of harmonic suppression circuit 13
Output matches impedances, and the resonant frequency controlling harmonic suppression circuit 13 is identical with the tranmitting frequency of signal to be transmitted.
In embodiments of the present invention, the harmonic wave being connected by the common port arranged in mixed-dispel suppression device with duplexer 12
Suppression circuit 13, owing to this harmonic suppression circuit 13 can control input impedance and the harmonic suppression circuit 13 of harmonic suppression circuit 13
Output matches impedances, i.e. control the input impedance of harmonic suppression circuit 13 equal to the output impedance of harmonic suppression circuit 13,
So that the impedance of the common port of duplexer 12 and the matches impedances of load end, it is to avoid the impedance of the common port of duplexer 12
With the impedance mismatching of load end, i.e. avoid the impedance of common port of duplexer 12 to differ with the impedance of load end, thus obtain
Maximum power output.
Wherein, after signal to be transmitted refers to be amplified by power amplifier 11 output, treat the signal launched by antenna.
In embodiments of the present invention, this harmonic suppression circuit 13 is additionally operable to the resonant frequency controlling harmonic suppression circuit 13 and letter to be launched
Number tranmitting frequency identical, so that harmonic suppression circuit 13 is less on the impact of the tranmitting frequency of signal to be transmitted, and energy
Enough on the premise of not increasing cost and not affecting radio-frequency performance, strengthen the harmonic wave that power amplifier 11 is exported by duplexer 12
The rejection ability of signal, thus solve spuious problem.Wherein, harmonic signal refers to be exported by power amplifier 11, and treats
Launch the signal that the frequency of tranmitting frequency of signal is different.In embodiments of the present invention, it is desirable to filtered by harmonic suppression circuit 13
Except harmonic signal.
Fig. 2 shows the schematic diagram of harmonic suppression circuit 13 in the mixed-dispel suppression device that the embodiment of the present invention provides.Such as Fig. 2
Shown in, this harmonic suppression circuit 13 includes: inductance L, the first electric capacity C1 and the second electric capacity C2.
Wherein, the input of harmonic suppression circuit 13 is connected with one end of inductance L and one end of the first electric capacity C1 respectively；Humorous
The outfan of ripple suppression circuit 13 is connected with the other end of inductance L and one end of the second electric capacity C2 respectively；First electric capacity C1's is another
The other end of one end and the second electric capacity C2 ground connection respectively.
Preferably, the equal scalable of capacitance of the inductance value of inductance L, the capacitance of the first electric capacity C1 and the second electric capacity C2.
Preferably, harmonic suppression circuit 13 is additionally operable to control the impedance convergence of the common port of duplexer 12.
Here, controlled the impedance convergence of the common port of duplexer 12 by harmonic suppression circuit 13, make duplexer 12
The impedance stabilization of common port, thus keeps the common port of duplexer 12 and the matches impedances state of load end, thus improves
The stability of mixed-dispel suppression device.
Preferably, the outfan of harmonic suppression circuit 13 is connected with duplexer.
As an example of the embodiment of the present invention, the outfan of harmonic suppression circuit 13 is connected with duplexer, wherein,
Duplexer is the switch of the duty for switching antenna, and the duty of antenna includes reception state and emission state.
In inventive embodiments, after signal to be transmitted carries out spurious reduction process by harmonic suppression circuit 13, control duplexer
It is in emission state, so that the signal to be transmitted after spurious reduction processes to be launched.
It should be noted that duplexer can be arranged in mixed-dispel suppression device, it is also possible to be set to and spurious reduction
Device is connected, in this no limit.
The embodiment of the present invention, by arranging the harmonic suppression circuit 13 being connected with the common port of duplexer, controls harmonics restraint
The input impedance of circuit 13 and the output matches impedances of harmonic suppression circuit 13, thus make common port and the load of duplexer 12
The matches impedances of end；The resonant frequency controlling harmonic suppression circuit 13 is identical with the tranmitting frequency of signal to be transmitted, thus makes
Harmonic suppression circuit 13 is less on the impact of the tranmitting frequency of signal to be transmitted, and has bigger decay to harmonic signal, thus
Clutter interference can be reduced, improve receiving sensitivity.
Fig. 3 shows the flowchart of the spurious reduction method that the embodiment of the present invention provides, and the method is by spurious reduction
Device performs.With reference to Fig. 3, the method includes:
In step S301, obtain the tranmitting frequency of signal to be transmitted；
In step s 302, regulate harmonic suppression circuit, make resonant frequency and the signal to be transmitted of harmonic suppression circuit
Tranmitting frequency is identical；
In step S303, regulate harmonic suppression circuit, make input impedance and the harmonic suppression circuit of harmonic suppression circuit
Output matches impedances.
It should be noted that during regulation harmonic suppression circuit, harmonics restraint electricity can be measured by circuit tester
The input impedance on road and the output impedance of harmonic suppression circuit, it is also possible to by the signal intensity of oscilloscope display harmonic signal.
Preferably, regulate harmonic suppression circuit, including: the regulation inductance value of inductance L of harmonic suppression circuit, the first electric capacity
The capacitance of C1 and/or the capacitance of the second electric capacity C2.
As an example of the embodiment of the present invention, regulate harmonic suppression circuit, including: the electricity of regulation harmonic suppression circuit
At least one in the capacitance of the sense inductance value of L, the capacitance of the first electric capacity C1 and the second electric capacity C2.
Alternatively, regulate harmonic suppression circuit 13, make input impedance and the harmonic suppression circuit 13 of harmonic suppression circuit 13
Output matches impedances, particularly as follows:
Regulation harmonic suppression circuit 13, makes the input impedance of harmonic suppression circuit 13 and the output resistance of harmonic suppression circuit 13
Resist is 50 ohm.
As an example of the embodiment of the present invention, regulate the inductance value of inductance L of harmonic suppression circuit 13, the first electric capacity
The capacitance of C1 and/or the capacitance of the second electric capacity C2, so that the input impedance of harmonic suppression circuit 13 and harmonic suppression circuit
The output impedance of 13 is 50 ohm, thus on the premise of matches impedances, takes into account wanting of pressure, power capacity and decay
Ask.
Fig. 4 shows the flowchart of the spurious reduction method that another embodiment of the present invention provides, with reference to Fig. 4:
In step S401, obtain the tranmitting frequency of signal to be transmitted；
In step S402, regulate harmonic suppression circuit, make resonant frequency and the signal to be transmitted of harmonic suppression circuit
Tranmitting frequency is identical；
In step S403, regulate harmonic suppression circuit, make input impedance and the harmonic suppression circuit of harmonic suppression circuit
Output matches impedances；
In step s 404, the first electric capacity of regulation harmonic suppression circuit, make the impedance convergence of the common port of duplexer.
As an example of the embodiment of the present invention, at the regulation inductance value of inductance L of harmonic suppression circuit, the first electric capacity
The capacitance of C1 and/or the capacitance of the second electric capacity C2, make the input impedance of harmonic suppression circuit and the defeated of harmonic suppression circuit
After going out matches impedances, the method also includes: the inductance L and the second electric capacity C2 of fixing harmonic suppression circuit, and regulation harmonic wave presses down
First electric capacity C1 of circuit processed, makes the impedance of the common port of duplexer restrain as far as possible.
Fig. 5 shows the flowchart of the spurious reduction method that another embodiment of the present invention provides, with reference to Fig. 5:
In step S501, obtain the tranmitting frequency of signal to be transmitted；
In step S502, regulate harmonic suppression circuit, make resonant frequency and the signal to be transmitted of harmonic suppression circuit
Tranmitting frequency is identical；
In step S503, regulate harmonic suppression circuit, make input impedance and the harmonic suppression circuit of harmonic suppression circuit
Output matches impedances；
In step S504, the first electric capacity of regulation harmonic suppression circuit, make the impedance convergence of the common port of duplexer；
In step S505, regulate harmonic suppression circuit, to regulate the load balance factor of power amplifier.
As an example of the embodiment of the present invention, the method also includes: the inductance of the inductance L of regulation harmonic suppression circuit
Value, the capacitance of the first electric capacity C1 and/or the capacitance of the second electric capacity C2, to regulate the load balance factor of power amplifier, thus
The parameter such as emission current and ACLR (Adjacent Channel Leakage Ratio, adjacent channel leakage ratio) is made to meet design
Requirement.
Should be understood that in embodiments of the present invention, the size of the sequence number of above-mentioned each process is not meant to the elder generation of execution sequence
After, the execution sequence of each process should determine with its function and internal logic, and should be to the implementation process structure of the embodiment of the present invention
Become any restriction.
The embodiment of the present invention, by arranging the harmonic suppression circuit being connected with the common port of duplexer, controls harmonics restraint electricity
The input impedance on road and the output matches impedances of harmonic suppression circuit, thus make the common port of duplexer and the impedance of load end
Match；The resonant frequency controlling harmonic suppression circuit is identical with the tranmitting frequency of signal to be transmitted, thus makes harmonics restraint electricity
Road is less on the impact of the tranmitting frequency of signal to be transmitted, and has bigger decay to harmonic signal such that it is able to reduce spuious
Interference, improves receiving sensitivity.
The above, the only detailed description of the invention of the present invention, but protection scope of the present invention is not limited thereto, and any
Those familiar with the art, in the technical scope that the invention discloses, can readily occur in change or replace, should contain
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with scope of the claims.
Claims (10)
1. a mixed-dispel suppression device, it is characterised in that including:
Power amplifier, duplexer and harmonic suppression circuit；
The outfan of described power amplifier is connected with the transmitting terminal of described duplexer, and the common port of described duplexer is humorous with described
The input of ripple suppression circuit is connected；
Described harmonic suppression circuit is for controlling the input impedance of described harmonic suppression circuit and the defeated of described harmonic suppression circuit
Go out matches impedances, and the resonant frequency controlling described harmonic suppression circuit is identical with the tranmitting frequency of signal to be transmitted.
Device the most according to claim 1, it is characterised in that described harmonic suppression circuit includes:
Inductance, the first electric capacity and the second electric capacity；
The input of described harmonic suppression circuit one end with one end of described inductance and described first electric capacity respectively is connected；
The outfan of described harmonic suppression circuit one end with the other end of described inductance and described second electric capacity respectively is connected；
The other end of described first electric capacity and the other end of described second electric capacity ground connection respectively.
Device the most according to claim 2, it is characterised in that the inductance value of described inductance, the electric capacity of described first electric capacity
Value and the equal scalable of capacitance of described second electric capacity.
4. according to the device described in claims 1 to 3 any one, it is characterised in that described harmonic suppression circuit is additionally operable to control
Make the impedance convergence of the common port of described duplexer.
Device the most according to claim 1, it is characterised in that the outfan of described harmonic suppression circuit and duplexer phase
Even.
6. the spurious reduction method of the device as described in claim 1 to 5 any one, it is characterised in that described method
Including:
Obtain the tranmitting frequency of signal to be transmitted；
Regulation harmonic suppression circuit, the resonant frequency making described harmonic suppression circuit is identical with the tranmitting frequency of signal to be transmitted；
Regulate described harmonic suppression circuit, make the input impedance of described harmonic suppression circuit and the output of described harmonic suppression circuit
Matches impedances.
Method the most according to claim 6, it is characterised in that regulation harmonic suppression circuit, including:
Regulate the inductance value of the inductance of described harmonic suppression circuit, the capacitance of the first electric capacity and/or the capacitance of the second electric capacity.
8., according to the method described in claim 6 or 7, it is characterised in that regulate described harmonic suppression circuit, make described harmonic wave press down
The input impedance of circuit processed and the output matches impedances of described harmonic suppression circuit, particularly as follows:
Regulate described harmonic suppression circuit, make the input impedance of described harmonic suppression circuit and the output of described harmonic suppression circuit
Impedance is 50 ohm.
9. according to the method described in claim 6 or 7, it is characterised in that described method also includes:
Regulate the capacitance of the first electric capacity of described harmonic suppression circuit, make the impedance convergence of the common port of described duplexer.
10. according to the method described in claim 6 or 7, it is characterised in that described method also includes:
Regulate described harmonic suppression circuit, to regulate the load balance factor of power amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379086.2A CN106100652B (en) | 2016-05-31 | 2016-05-31 | Mixed-dispel suppression device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610379086.2A CN106100652B (en) | 2016-05-31 | 2016-05-31 | Mixed-dispel suppression device and method |
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| CN106100652A true CN106100652A (en) | 2016-11-09 |
| CN106100652B CN106100652B (en) | 2018-11-27 |
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| CN201610379086.2A Active CN106100652B (en) | 2016-05-31 | 2016-05-31 | Mixed-dispel suppression device and method |
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Cited By (4)
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| CN109660267A (en) * | 2018-12-10 | 2019-04-19 | 维沃移动通信有限公司 | A kind of antenna system and mobile terminal |
| WO2020051798A1 (en) * | 2018-09-12 | 2020-03-19 | 华为技术有限公司 | Cancellation method and device for radio spectrum emission signal |
| CN114696844A (en) * | 2020-12-31 | 2022-07-01 | 炬芯科技股份有限公司 | Wireless signal transmitting device with harmonic suppression function and harmonic suppression method |
| WO2023137769A1 (en) * | 2022-01-24 | 2023-07-27 | 华为技术有限公司 | Acoustic filter and electronic device |
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| CN114696844A (en) * | 2020-12-31 | 2022-07-01 | 炬芯科技股份有限公司 | Wireless signal transmitting device with harmonic suppression function and harmonic suppression method |
| CN114696844B (en) * | 2020-12-31 | 2023-12-15 | 炬芯科技股份有限公司 | Wireless signal transmitting device with harmonic suppression and harmonic suppression method |
| WO2023137769A1 (en) * | 2022-01-24 | 2023-07-27 | 华为技术有限公司 | Acoustic filter and electronic device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106100652B (en) | 2018-11-27 |
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Address after: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee after: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. Address before: Changan town in Guangdong province Dongguan 523860 usha Beach Road No. 18 Patentee before: GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORP., Ltd. |
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