CN104378086A - Radio frequency chip, radio frequency circuit and electronic device - Google Patents
Radio frequency chip, radio frequency circuit and electronic device Download PDFInfo
- Publication number
- CN104378086A CN104378086A CN201310349651.7A CN201310349651A CN104378086A CN 104378086 A CN104378086 A CN 104378086A CN 201310349651 A CN201310349651 A CN 201310349651A CN 104378086 A CN104378086 A CN 104378086A
- Authority
- CN
- China
- Prior art keywords
- radio frequency
- filter circuit
- frequency chip
- pin
- radio
- 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.)
- Granted
Links
Abstract
The invention relates to the technical field of communication and discloses a radio frequency chip, a radio frequency circuit and an electronic device. The radio frequency chip, the radio frequency circuit and the electronic device aim to solve the technical problem that in the prior art, power interference is serious. The radio frequency chip comprises a power supply pin and an adjustable filter circuit, wherein power supplied by a power supply is received through the power supply pin, the filtering frequency of the adjustable filter circuit can be adjusted, the first end of the adjustable filter circuit is connected with the power supply pin, the second end of the adjustable filter circuit is connected to a control end which is used for controlling the adjustable filter circuit, and when power is supplied to the radio frequency chip through the power supply pin, interference signals generated by the power supply can be filtered through the adjustable filter circuit so that at least a part of the interference signals can be filtered. Due to the fact that the adjustable filter circuit is arranged inside the radio frequency chip, the distance between the adjustable filter circuit and the radio frequency chip is shortened, and the technical effect of reducing interference of the power supply is achieved.
Description
Technical field
The present invention relates to communication technical field, particularly a kind of radio frequency chip, radio circuit and electronic equipment.
Background technology
Along with the development of science and technology, electronic technology have also been obtained development at full speed, and then also creates increasing electronic equipment, such as: mobile phone, panel computer, notebook computer etc.The function that these electronic equipments have from strength to strength, has become a part indispensable in people's life.
And a lot of electronic equipment all has communication function, and then can receive or send data, in order to realize communication function, in these electronic equipments, be all provided with radio frequency chip, and power supply can produce interference by radio frequency chip, so need to reduce interference by arranging filter circuit.
As shown in Figure 1, for the annexation schematic diagram of radio frequency chip 10 of the prior art, filter circuit 11 and power supply 12, wherein, it is outside that filter circuit 11 is arranged at radio frequency chip 10, be connected with the power pin 10a of described radio frequency chip 10, described power supply 12 is connected with described radio frequency chip 10 by described filter circuit 11, and then reduces the interference of power supply 12 to described radio frequency chip 10 by described filter circuit 11.
Wherein, as shown in Figure 2, described filter circuit 11, specifically comprises:
First electric capacity 20, comprises the first pin 20a and the second pin 20b, described first pin 20a ground connection;
First inductance 21, comprise the 3rd pin 21a and the 4th pin 21b, there is the first intersection point 23 in described 3rd pin 21a and described second pin 20b, described first intersection point 23 is connected to described power pin 10a, and described 4th pin 21b is connected to the radio-frequency (RF) output end of described radio frequency chip.
In order to ensure that described filter circuit 11 reaches best filter effect, need in prior art manually to change the first electric capacity or the first inductance, such as adopt the multiple inductance of 6.8nH, 8.2nH, 12nH, 15nH, 22nH, 33nH etc. to test the first inductance, and then determine the value that the filter effect of filter circuit 11 is best.
Present inventor finds at least there is following technical problem in prior art:
Due in the prior art, filter circuit is arranged at radio frequency chip outside, and need preferentially to arrange other circuit between radio frequency chip and filter circuit, such as: radio frequency cabling, biasing circuit, cycle of phase-locked loop filter circuit etc., so cause filter circuit distance radio frequency chip far away, so cause the weak effect reducing power supply disturbance, thus cause the technical problem that there is higher power supply disturbance in prior art; Further, due in the prior art, in order to make the filter effect of filter circuit best, needing repeatedly frequently to change the first electric capacity and the first inductance, and then there is the technical problem of inconvenient operation, also easily causing electronic device loss.
Summary of the invention
The embodiment of the present invention provides a kind of radio frequency chip, radio circuit and electronic equipment, for solving in prior art the technical problem that there is higher power supply disturbance.
A kind of radio frequency chip is provided according to a first aspect of the invention, comprises: power pin, the electric energy provided by described power pin reception power supply; The tunable filter circuit that frequency filtering is adjustable, the first end of described tunable filter circuit is connected with described power pin, and the second end of described tunable filter circuit is connected to the control end controlled described tunable filter circuit; Wherein, when powering to described radio frequency chip by described power pin, by described tunable filter circuit, filtering is carried out to the interference signal that described power supply produces, to filter out described interference signal at least partially.
In conjunction with first aspect, in the implementation that the first is possible, described tunable filter circuit, specifically comprises: first tunable capacitor of capacitance in the first capacitance value range and first controllable impedance of inductance value in the first inductance value range.
In conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, described first tunable capacitor comprises the first pin and the second pin, and described first controllable impedance comprises the 3rd pin and the 4th pin; Described first pin is connected with power pin; Described second pin is connected with described 3rd pin; Described 4th pin ground connection.
In conjunction with the first possible implementation of first aspect, in the implementation that the third is possible, the arbitrary capacitance in described first capacitance value range is less than first and presets threshold capacitance.
In conjunction with the first possible implementation of first aspect, in the 4th kind of possible implementation, the arbitrary inductance value in described first inductance value range is less than first and presets threshold inductance value.
In conjunction with any one the possible implementation in first to fourth kind of first aspect possible implementation, in the 5th kind of possible implementation, described radio frequency chip, also comprise: register, for the current inductance value of the capacitance present value and/or described first controllable impedance that store described first tunable capacitor.
A kind of radio circuit is provided according to a second aspect of the invention, comprises: according to a first aspect of the invention or the radio frequency chip provided in the first to five of first aspect kind of possible implementation; Baseband processor, is connected to described radio frequency chip, for sending the first control signal by described control end to described tunable filter circuit, regulates the frequency filtering of tunable filter circuit.
In conjunction with second aspect, in the implementation that the first is possible, when described radio frequency chip comprises register, described radio circuit, also comprise: configuration bus, by described configuration bus, described baseband processor is connected to described register, transfers to described register, to regulate described frequency filtering for described first control signal described baseband processor produced.
In conjunction with second aspect, in the implementation that the second is possible, described radio circuit also comprises: radio-frequency front-end, is connected with described radio frequency chip.
A kind of electronic equipment is provided according to a third aspect of the invention we, comprises: shell; Processor, is arranged at described enclosure; According to the radio circuit that any one the possible implementation in the first to two kind of second aspect or second aspect possible implementation provides, be arranged at described case surface or inside, be connected with described processor, for sending the first signal that described processor exports.
The one or more technical schemes provided in the embodiment of the present application, at least have following technique effect or advantage:
(1) due in the embodiment of the present application, tunable filter circuit is arranged at radio frequency chip inside, so the power pin close together of tunable filter circuit distance radio frequency chip, so filter effect is comparatively obvious, thus reaches the technique effect reducing power supply disturbance;
Further, the filter circuit carrying out filtering due to the interference signal produced power supply is the adjustable tunable filter circuit of frequency filtering, so do not need frequently to change filter circuit, also can regulate the frequency filtering of filter circuit, and then the filter effect making filter circuit reach best, owing to not needing frequently to change tunable filter circuit, so have technique effect more convenient to operate.
(2) due in embodiments of the present invention, the capacitance forming the first tunable capacitor of tunable filter circuit is adjustable, the inductance value forming the first controllable impedance of tunable filter circuit is also adjustable, so, filter effect directly by directly regulating the capacitance of the first tunable capacitor or the inductance value of the first controllable impedance to make tunable filter circuit reach best, and do not need frequently to change the first adjustable electric perhaps the first controllable impedance, so reach technique effect more convenient to operate; And prevent electronic device because frequently change the loss caused.
(3) due in the embodiment of the present application, arbitrary capacitance in first capacitance value range is less than first and presets threshold capacitance, and then make the small volume of the first tunable capacitor, and in prior art, the volume of radio frequency chip is general less, so reduce the technical difficulty the first tunable capacitor being arranged at radio frequency chip.
(4) due in the embodiment of the present application, the arbitrary inductance value in the first inductance value range is less than first and presets threshold inductance value, and then makes the small volume of the first controllable impedance, thus reduces the technical difficulty the first controllable impedance being arranged at radio frequency chip.
(5) due in the embodiment of the present application, described radio frequency chip also includes register, described register stores the capacitance present value of the first tunable capacitor and/or the current inductance value of described first controllable impedance, so, can directly modify to the capacitance present value in described register or current inductance value, and then the capacitance of the first tunable capacitor to be regulated or the inductance value of the first controllable impedance regulates, so reach the convenient technique effect of the adjustment of the first adjustable electric perhaps the first controllable impedance, and then can be convenient tunable filter circuit is adjusted to optimum filtering effect.
Accompanying drawing explanation
Fig. 1 is the annexation schematic diagram of radio frequency chip, tunable filter circuit and power supply in prior art;
Fig. 2 is the structure chart of tunable filter circuit in prior art;
Fig. 3 is the structure chart of radio frequency chip in the embodiment of the present application;
Fig. 4 is the first structure chart of tunable filter circuit in the embodiment of the present application radio frequency chip;
Fig. 5 is the second structure chart of tunable filter circuit in the embodiment of the present application radio frequency chip;
Fig. 6 carries out by register pair first tunable capacitor the circuit diagram that controls;
Fig. 7 is the structure chart of radio circuit in the embodiment of the present application;
Fig. 8 is the structure chart of electronic equipment in the embodiment of the present application.
Embodiment
The embodiment of the present invention provides a kind of radio frequency chip, radio circuit and electronic equipment, for solving in prior art the technical problem of the weak effect reducing power supply disturbance.
Technical scheme in the embodiment of the present application is solve above-mentioned technical problem, and general thought is as follows:
A kind of radio frequency chip is provided, comprises: power pin, the electric energy provided by this power pin reception power supply; The tunable filter circuit that frequency filtering is adjustable, the first end of this tunable filter circuit is connected with this power pin, and the second end of this tunable filter circuit is connected to the control end controlled this tunable filter circuit; Wherein, when powering to this radio frequency chip by this power pin, by this tunable filter circuit, filtering is carried out to the interference signal that this power supply produces, to filter out this interference signal at least partially.
Due in such scheme, tunable filter circuit is arranged at radio frequency chip inside, so the power pin close together of tunable filter circuit distance radio frequency chip, so filter effect is comparatively obvious, thus improves the technique effect reducing power supply disturbance;
Further, the filter circuit carrying out filtering due to the interference signal produced power supply is tunable filter circuit, so do not need frequently to change filter circuit, also can regulate the filtering parameter of filter circuit, and then the filter effect making filter circuit reach best, owing to not needing frequently to change tunable filter circuit, so have technique effect more convenient to operate.First aspect, the embodiment of the present application provides a kind of radio frequency chip, please refer to Fig. 3, and this radio frequency chip specifically comprises following structure:
Power pin 30, receives by this power pin 30 electric energy that power supply provides;
The tunable filter circuit 31 that frequency filtering is adjustable, the first end 33 of this tunable filter circuit 31 is connected with this power pin 30, and the second end 34 of this tunable filter circuit is connected to the control end controlled this tunable filter circuit;
Wherein, when powering to this radio frequency chip by this power pin 30, by this tunable filter circuit 31, filtering is carried out to the interference signal that this power supply 30 produces, to filter out this interference signal at least partially.
As further preferred embodiment, please refer to Fig. 4 and Fig. 5, wherein Fig. 4 and Fig. 5 is respectively the different structure chart of two kinds of tunable filter circuit 31, and this tunable filter circuit 31 specifically comprises: the first tunable capacitor 31a of capacitance in the first capacitance value range and the first controllable impedance 31b of inductance value in the first inductance value range.Wherein, Fig. 4 is the first tunable capacitor 31a structure chart in parallel with the first controllable impedance 31b; Fig. 5 is the structure chart that the first tunable capacitor 31a connects with the first controllable impedance 31b.
As seen from the above description, the capacitance forming the first tunable capacitor of tunable filter circuit is adjustable, the inductance value forming the first controllable impedance of tunable filter circuit is also adjustable, so, filter effect directly by directly regulating the capacitance of the first tunable capacitor or the inductance value of the first controllable impedance to make tunable filter circuit reach best, and do not need frequently to change the first adjustable electric perhaps the first controllable impedance, so reach technique effect more convenient to operate; And prevent electronic device because frequently change the loss caused.
In specific implementation process, this tunable filter circuit 31 can have various structures, introduces two kinds wherein below, certainly, in specific implementation process, is not limited to following two kinds of situations.
The first, please refer to Fig. 4, and this first tunable capacitor 31a comprises the first pin 40 and the second pin 41, and this first controllable impedance 31b comprises the 3rd pin 42 and the 4th pin 43; This first pin 40 ground connection; The first intersection point 44 is there is in this second pin 41 with the 3rd pin 42; 4th pin 43 is connected to the radio-frequency (RF) output end of this radio frequency chip.
The second, please refer to Fig. 5, and this first tunable capacitor 31a comprises the 5th pin 50 and the 6th pin 51, and this first controllable impedance 31b comprises the 7th pin 52 and the 8th pin the 53, five pin 50 ground connection; 6th pin 51 is connected to the 7th pin 52; 8th pin 53 is connected to this power pin 30.
In addition, in specific implementation process, first capacitance value range of this first tunable capacitor 31a can be any range, such as: 0pf ~ 100pf, 0pf ~ 50pf etc., is not restricted this embodiment of the present application; In like manner, first inductance value range of this first controllable impedance 31b can be also any range, such as, be: 0 ~ 15nH, 0 ~ 33nH etc., be not restricted this embodiment of the present application.At needs, the filtering parameter of this tunable filter circuit 31 is adjusted, during the filter effect reaching best to make this tunable filter circuit, only need to adjust the capacitance present value of this first tunable capacitor 31a and the current inductance value of this first controllable impedance 31b, and do not need the first tunable capacitor 31a and the first controllable impedance 31b to forming this tunable filter circuit 31 to change, so reach technique effect more convenient to operate; And prevent electronic device because frequently change the loss brought.
In specific implementation process, because the volume of radio frequency chip is all less, so be arranged at the technical difficulty of this radio frequency chip to reduce the first tunable capacitor 31a, arbitrary capacitance in this first capacitance value range is less than first and presets threshold capacitance, when namely ensureing the first tunable capacitor 31a to be arranged at this radio frequency chip, the normal work of this radio frequency chip can not be hindered.
In specific implementation process, this first default threshold capacitance can be any capacitance, such as: 50pf, 90pf, 120pf etc., wherein, as a preferred embodiment, this first default threshold capacitance is 100pf, when this first default threshold capacitance is 100pf, this first tunable capacitor 31a can either be guaranteed to be arranged at this radio frequency chip, can ensure that again this first tunable capacitor 31a has the as far as possible wide capacitance of adjustable extent, thus make tunable filter circuit 31 also have the filtering parameter that scope is as far as possible wide, thus make tunable filter circuit 31 can reach good filter effect.
In like manner, the arbitrary inductance value in this first inductance value range is less than first and presets threshold inductance value, is the small volume in order to ensure shared by this first controllable impedance 31b equally, and then reduces the technical difficulty that the first controllable impedance 31b is arranged at this radio frequency chip.
In specific implementation process, this first default threshold inductance value can be arbitrary value equally, such as: 15nH, 30nH, 40nH etc., is not restricted this embodiment of the present application.As a preferred embodiment, this first default threshold inductance value is 33nH, in this case, the size of this first controllable impedance 31b can either be enable to be arranged at this radio frequency chip, enable again this first controllable impedance 31b have inductance value in a big way simultaneously, thus make the Selecting parameter scope of tunable filter circuit 31 comparatively wide, thus make tunable filter circuit 31 can obtain good filter effect as far as possible.
Further, please continue to refer to Fig. 4 and Fig. 5, this radio frequency chip also comprises:
Register 60, is connected to this second end 34, for the current inductance value of the capacitance present value and/or this first controllable impedance 31b that store this first tunable capacitor 31a.
In specific implementation process, by the value of amendment to the register 60 that the first tunable capacitor 31a controls, just can determine that the switch of the multiple electric capacity forming this first tunable capacitor 31a is in unlatching or closed condition, and then the capacitance present value of this first tunable capacitor 31a can be determined; And by the value of amendment to the register 60 that the first controllable impedance 31b controls, just can determine that the switch of the multiple inductance forming this first controllable impedance 31b is in unlatching or closed condition, and then the current inductance value of this first tunable capacitor 31b can be determined.
Please refer to Fig. 6, the circuit diagram for being controlled the first tunable capacitor 31a by a register 60:
This first tunable capacitor 31a comprises electric capacity 61, electric capacity 62, electric capacity 63, wherein, electric capacity 61 and electric capacity 62 size are 1pf, electric capacity 63 size is 2pf, the value of register is 011, so the switch of electric capacity 61 is in opening, the switch of electric capacity 62, electric capacity 63 is in open mode, and then the electric capacity of this first tunable capacitor of current composition 31a is electric capacity 62 and electric capacity 63, thus the capacitance present value of this first tunable capacitor 31a is: 3pf:
And if the value of register is 110, so the switch of electric capacity 61 and electric capacity 62 is in closure state, and the switch of electric capacity 63 is in opening, and then the capacitance present value of this first tunable capacitor 31a is 2pf etc.
Second aspect, the embodiment of the present application provides a kind of radio circuit, please refer to Fig. 7, and this radio circuit specifically comprises:
Radio frequency chip 70, the radio frequency chip that this radio frequency chip is introduced for the application's any embodiment;
Baseband processor 71, is connected to this radio frequency chip 70,
For sending the first control signal by described control end to described tunable filter circuit, the frequency filtering of tunable filter circuit is regulated.
Wherein, when this radio frequency chip 70 comprises register 60, please continue to refer to Fig. 7, this radio circuit also comprises:
Configuration bus 72, is connected to this register 73 by this configuration bus 72 by this baseband processor 71, transfers to this register 73, to regulate this frequency filtering for this first control signal this baseband processor 71 produced.
In specific implementation process, baseband processor 71 by configuration bus 72 to this this filter circuit of composition the capacitance present value of the first tunable capacitor 31a or the current inductance value of the first controllable impedance 31b modify, and then the frequency filtering of tunable filter circuit is regulated, wherein often revise once, just measure a radio-frequency (RF) index, after repeatedly revising, just can obtain radio-frequency performance preferably time capacitance present value and current inductance value, then this data record is got off, as the configuration parameter of the frequency filtering of tunable filter circuit 31, thus can prevent from frequently changing this first tunable capacitor 31a and this first controllable impedance 31b.
Further, this radio circuit, also comprises:
Radio-frequency front-end, is connected with this radio frequency chip, and this radio-frequency front-end specifically comprises: receiving path and transmitting path.
Further, receiving path comprises the devices such as low noise amplifier (LNA), filter, comprise the indexs such as gain, sensitivity, radio frequency reception bandwidth, will design according to products characteristics, object is that the radiofrequency signal ensured can pick up out from space complete, without distortion and the circuit such as frequency conversion, intermediate frequency amplification flowing to rear class processes.
The signal sent, specifically for the work such as power amplification, filtering, carries out modulating, digital-to-analogue conversion, after power amplification etc. a series of activities, sends antenna to and send by transmitting path.
Further, this radio circuit also comprises:
Antenna, is connected with this radio-frequency front-end.
This antenna is mainly used in receiving and carries out processing signals by radio-frequency front-end, is then sent; Or for receiving the Received signal strength that other electronic equipment sends, and sent radio-frequency front-end and processed.
According to description above, above-mentioned radio circuit is the radio circuit being provided with above-mentioned radio frequency chip, so the structure of above-mentioned radio circuit is corresponding with one or more embodiments of above-mentioned radio frequency chip, has not just repeated one by one at this.
The third aspect, the embodiment of the present application provides a kind of electronic equipment, and this electronic equipment is such as: notebook computer, mobile phone, panel computer etc., and the embodiment of the present application is not restricted, and please refer to Fig. 8, and this electronic equipment specifically comprises:
Shell 80;
Processor 81, is arranged at this shell 80 inner;
The radio circuit 82 that the application's any embodiment is introduced, is arranged at this case surface or inside, is connected with this processor 81, for sending the first signal that this processor 81 exports.
According to description above, above-mentioned electronic equipment is the electronic equipment being provided with above-mentioned radio circuit, so the structure of above-mentioned electronic equipment is corresponding with one or more embodiments of above-mentioned radio circuit, has not just repeated one by one at this.
One or more technical schemes that the application provides, at least have following technique effect or advantage:
(1) due in the embodiment of the present application, tunable filter circuit is arranged at radio frequency chip inside, so the power pin close together of tunable filter circuit distance radio frequency chip, so filter effect is comparatively obvious, thus reaches the technique effect reducing power supply disturbance;
Further, the filter circuit carrying out filtering due to the interference signal produced power supply is tunable filter circuit, so do not need frequently to change filter circuit, also can regulate the filtering parameter of filter circuit, and then the filter effect making filter circuit reach best, owing to not needing frequently to change tunable filter circuit, so have technique effect more convenient to operate.
(2) due in embodiments of the present invention, the capacitance forming the first tunable capacitor of tunable filter circuit is adjustable, the inductance value forming the first controllable impedance of tunable filter circuit is also adjustable, so, filter effect directly by directly regulating the capacitance of the first tunable capacitor or the inductance value of the first controllable impedance to make tunable filter circuit reach best, and do not need frequently to change the first adjustable electric perhaps the first controllable impedance, so reach technique effect more convenient to operate; And prevent electronic device because frequently change the loss caused.
(3) due in the embodiment of the present application, arbitrary capacitance in first capacitance value range is less than first and presets threshold capacitance, and then make the small volume of the first tunable capacitor, and in prior art, the volume of radio frequency chip is general less, so reduce the technical difficulty the first tunable capacitor being arranged at radio frequency chip.
(4) due in the embodiment of the present application, the arbitrary inductance value in the first inductance value range is less than first and presets threshold inductance value, and then makes the small volume of the first controllable impedance, thus reduces the technical difficulty the first controllable impedance being arranged at radio frequency chip.
(5) due in the embodiment of the present application, this radio frequency chip also includes register, this register stores the capacitance present value of the first tunable capacitor and/or the current inductance value of this first controllable impedance, so, can directly modify to the capacitance present value in this register or current inductance value, and then the capacitance of the first tunable capacitor to be regulated or the inductance value of the first controllable impedance regulates, so reach the convenient technique effect of the adjustment of the first adjustable electric perhaps the first controllable impedance, and then can be convenient tunable filter circuit is adjusted to optimum filtering effect.
It will be understood by those skilled in the art that embodiments of the invention can be provided as method, device (equipment) or computer program.Therefore, the present invention can adopt the form of complete hardware embodiment, completely software implementation or the embodiment in conjunction with software and hardware aspect.And the present invention can adopt in one or more form wherein including the upper computer program implemented of computer-usable storage medium (including but not limited to magnetic disc store, CD-ROM, optical memory etc.) of computer usable program code.
The present invention describes with reference to according to the flow chart of the method for the embodiment of the present invention, device (equipment) and computer program and/or block diagram.Should understand can by the combination of the flow process in each flow process in computer program instructions realization flow figure and/or block diagram and/or square frame and flow chart and/or block diagram and/or square frame.These computer program instructions can being provided to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, making the instruction performed by the processor of computer or other programmable data processing device produce device for realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be stored in can in the computer-readable memory that works in a specific way of vectoring computer or other programmable data processing device, the instruction making to be stored in this computer-readable memory produces the manufacture comprising command device, and this command device realizes the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make on computer or other programmable devices, to perform sequence of operations step to produce computer implemented process, thus the instruction performed on computer or other programmable devices is provided for the step realizing the function of specifying in flow chart flow process or multiple flow process and/or block diagram square frame or multiple square frame.
Although describe the preferred embodiments of the present invention, those skilled in the art once obtain the basic creative concept of cicada, then can make other change and amendment to these embodiments.So claims are intended to be interpreted as comprising preferred embodiment and falling into all changes and the amendment of the scope of the invention.
Obviously, those skilled in the art can carry out various change and modification to the present invention and not depart from the spirit and scope of the present invention.Like this, if these amendments of the present invention and modification belong within the scope of the claims in the present invention and equivalent technologies thereof, then the present invention is also intended to comprise these change and modification.
Claims (10)
1. a radio frequency chip, is characterized in that, comprising:
Power pin, the electric energy provided by described power pin reception power supply;
The tunable filter circuit that frequency filtering is adjustable, the first end of described tunable filter circuit is connected with described power pin, and the second end of described tunable filter circuit is connected to the control end controlled described tunable filter circuit;
Wherein, when powering to described radio frequency chip by described power pin, by described tunable filter circuit, filtering is carried out to the interference signal that described power supply produces, to filter out described interference signal at least partially.
2. radio frequency chip as claimed in claim 1, it is characterized in that, described tunable filter circuit, specifically comprises: first tunable capacitor of capacitance in the first capacitance value range and first controllable impedance of inductance value in the first inductance value range.
3. radio frequency chip as claimed in claim 2, it is characterized in that, described first tunable capacitor comprises the first pin and the second pin, and described first controllable impedance comprises the 3rd pin and the 4th pin; Described first pin is connected with power pin; Described second pin is connected with described 3rd pin; Described 4th pin ground connection.
4. radio frequency chip as claimed in claim 2, is characterized in that, the arbitrary capacitance in described first capacitance value range is less than first and presets threshold capacitance.
5. radio frequency chip as claimed in claim 2, is characterized in that, the arbitrary inductance value in described first inductance value range is less than first and presets threshold inductance value.
6. the radio frequency chip as described in claim as arbitrary in claim 2-5, is characterized in that, described radio frequency chip, also comprises:
Register, is connected to described second end, for the current inductance value of the capacitance present value and/or described first controllable impedance that store described first tunable capacitor.
7. a radio circuit, is characterized in that, comprising:
Radio frequency chip as described in claim as arbitrary in claim 1-6;
Baseband processor, is connected to described radio frequency chip, for sending the first control signal by described control end to described tunable filter circuit, regulates the frequency filtering of tunable filter circuit.
8. radio circuit as claimed in claim 7, it is characterized in that, when described radio frequency chip comprises register, described radio circuit, also comprises:
Configuration bus, is connected to described register by described configuration bus by described baseband processor, transfers to described register, to regulate described frequency filtering for described first control signal described baseband processor produced.
9. radio circuit as claimed in claim 7, it is characterized in that, described radio circuit also comprises:
Radio-frequency front-end, is connected with described radio frequency chip.
10. an electronic equipment, is characterized in that, comprising:
Shell;
Processor, is arranged at described enclosure;
Radio circuit as described in claim as arbitrary in claim 7-9, is arranged at described case surface or inside, is connected with described processor, for sending the first signal that described processor exports.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310349651.7A CN104378086B (en) | 2013-08-12 | A kind of radio frequency chip, radio circuit and electronic equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310349651.7A CN104378086B (en) | 2013-08-12 | A kind of radio frequency chip, radio circuit and electronic equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104378086A true CN104378086A (en) | 2015-02-25 |
| CN104378086B CN104378086B (en) | 2018-08-31 |
Family
ID=
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853100A (en) * | 2015-05-15 | 2015-08-19 | 惠州Tcl移动通信有限公司 | Power supply interference control device for camera module and control method thereof |
| WO2018157660A1 (en) * | 2017-02-28 | 2018-09-07 | 维沃移动通信有限公司 | Multiplex antenna and antenna multiplexing method |
| CN110888380A (en) * | 2019-12-25 | 2020-03-17 | 北京北方华创微电子装备有限公司 | Control method of filter circuit in semiconductor equipment and semiconductor equipment |
| 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 |
| CN113659952A (en) * | 2021-07-12 | 2021-11-16 | 荣耀终端有限公司 | Filter circuit structure and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090146760A1 (en) * | 2006-05-15 | 2009-06-11 | Nxp B.V. | Assembly, chip and method of operating |
| CN201430603Y (en) * | 2009-04-24 | 2010-03-24 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN201608642U (en) * | 2010-01-19 | 2010-10-13 | 上海迦美信芯通讯技术有限公司 | Power supply management device of navigation radio frequency chip |
| CN102742351A (en) * | 2009-10-10 | 2012-10-17 | 帕拉泰克微波公司 | Method and apparatus for managing operations of a communication device |
| CN102761265A (en) * | 2011-04-29 | 2012-10-31 | 成都芯源系统有限公司 | Switching power supply controller and method of operating switching power supply |
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090146760A1 (en) * | 2006-05-15 | 2009-06-11 | Nxp B.V. | Assembly, chip and method of operating |
| CN201430603Y (en) * | 2009-04-24 | 2010-03-24 | 青岛海信移动通信技术股份有限公司 | Mobile terminal |
| CN102742351A (en) * | 2009-10-10 | 2012-10-17 | 帕拉泰克微波公司 | Method and apparatus for managing operations of a communication device |
| CN201608642U (en) * | 2010-01-19 | 2010-10-13 | 上海迦美信芯通讯技术有限公司 | Power supply management device of navigation radio frequency chip |
| CN102761265A (en) * | 2011-04-29 | 2012-10-31 | 成都芯源系统有限公司 | Switching power supply controller and method of operating switching power supply |
Non-Patent Citations (1)
| Title |
|---|
| 沈铖武: "光电经纬仪数据光纤传输系统研究", 《中国优秀博硕士学位论文全文数据库(硕士) 信息科技辑》 * |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104853100A (en) * | 2015-05-15 | 2015-08-19 | 惠州Tcl移动通信有限公司 | Power supply interference control device for camera module and control method thereof |
| CN104853100B (en) * | 2015-05-15 | 2018-04-06 | 惠州Tcl移动通信有限公司 | The power supply disturbance control device and its control method of camera module |
| WO2018157660A1 (en) * | 2017-02-28 | 2018-09-07 | 维沃移动通信有限公司 | Multiplex antenna and antenna multiplexing method |
| US11095322B2 (en) | 2017-02-28 | 2021-08-17 | Vivo Mobile Communication Co., Ltd. | Multiplexed antenna and method for multiplexing antenna |
| CN110888380A (en) * | 2019-12-25 | 2020-03-17 | 北京北方华创微电子装备有限公司 | Control method of filter circuit in semiconductor equipment and semiconductor equipment |
| CN110888380B (en) * | 2019-12-25 | 2021-11-16 | 北京北方华创微电子装备有限公司 | Control method of filter circuit in semiconductor equipment and semiconductor equipment |
| 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 |
| CN113659952A (en) * | 2021-07-12 | 2021-11-16 | 荣耀终端有限公司 | Filter circuit structure and electronic equipment |
| CN113659952B (en) * | 2021-07-12 | 2022-09-02 | 荣耀终端有限公司 | Filter circuit structure and electronic equipment |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US9712196B2 (en) | Tunable notch filter | |
| CN104934706B (en) | Electronic equipment | |
| US9660612B2 (en) | Phase shifted resonator | |
| CN207638649U (en) | Communication module | |
| US9031516B2 (en) | Apparatus and method for impedance adjustment | |
| US10290940B2 (en) | Broadband switchable antenna | |
| US9905911B2 (en) | Antenna for electronic device | |
| EP2866300A1 (en) | Antenna apparatus | |
| CN106788472A (en) | The radio frequency front-end device and mobile terminal of carrier aggregation | |
| US20130187829A1 (en) | High speed tunable matching network for antenna systems | |
| CN105742818A (en) | Antenna and control method | |
| CN203250847U (en) | Adjustable antenna and wireless communication apparatus | |
| CN104852152B (en) | A kind of antenna and electronic equipment | |
| CN203660044U (en) | Intelligent terminal capable of multiplexing high and low frequency antennas | |
| CN106663859A (en) | Systems and methods for enabling radio-frequency communication of modular mobile electronic device | |
| CN109274347B (en) | Radio frequency matching device and debugging method thereof | |
| WO2017197807A1 (en) | Circuit and method for adjusting frequency band of antenna, and electronic device | |
| EP3084958B1 (en) | Tunable loadline | |
| CN106067830B (en) | A kind of radiofrequency signal sending device and mobile terminal | |
| CN108181634A (en) | A kind of GPS radio frequency front end receiver device and method | |
| CN106656071A (en) | Uniform matching system with bypass channel and low-noise amplifier and used for 5GHz WiFi communication | |
| CN104009295A (en) | Near-field communication antenna and portable electronic device with antenna | |
| CN104378086A (en) | Radio frequency chip, radio frequency circuit and electronic device | |
| CN205212801U (en) | Electrically tunable filter | |
| CN203368415U (en) | Electric-tuning filter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |