CN108155916A - Rf signal reception circuit, circuit board, chip and terminal - Google Patents
Rf signal reception circuit, circuit board, chip and terminal Download PDFInfo
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- CN108155916A CN108155916A CN201810101085.0A CN201810101085A CN108155916A CN 108155916 A CN108155916 A CN 108155916A CN 201810101085 A CN201810101085 A CN 201810101085A CN 108155916 A CN108155916 A CN 108155916A
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- 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
- H04B1/16—Circuits
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- 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
- H04B1/1018—Means associated with receiver for limiting or suppressing noise or interference noise filters connected between the power supply and the receiver
-
- 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
- H04B1/16—Circuits
- H04B1/1607—Supply circuits
- H04B1/1615—Switching on; Switching off, e.g. remotely
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Abstract
The embodiment of the invention discloses a kind of rf signal reception circuit, circuit board, chip and internet-of-things terminal, which includes：Antenna circuit, the first filter circuit, switching circuit, the second filter circuit, low noise amplifier circuit and mixting circuit, second filter circuit include the first sub- filter circuit and the second sub- filter circuit；The first sub- filter circuit includes：First filter part F1, second filter part F2, third filtering device F3 and the 4th filtering device F4；The first end of the F1 is connect with the first end of the F2, and the second end of the F1 is connect with the first end of the F3, and the second end of the F3 is connect with the first end of the F4, and the second end of the F4 is connect with the second end of the F2.Foregoing circuit can improve treatment effect of the modem to signal to a certain extent.
Description
Technical field
The present invention relates to circuit structure technical field more particularly to a kind of rf signal reception circuit, circuit board, chip and
Internet-of-things terminal.
Background technology
Internet of Things is widely used in melting for network by Intellisense, identification technology with cognition technologies that communicates such as general fit calculations
In conjunction, also therefore it is referred to as the third wave that world information industry develops after computer, internet.Technology of Internet of things
Rapid development and application, it is meant that the requirement to the communication technology is higher and higher, and the transmission of communication signal is faced with increasing
Challenge.
During existing internet-of-things terminal is launched and transmits signal, there are transmission range is shorter, signal is disturbed
The problem of degree is big, when encountering interference, internet-of-things terminal will weaken the filter effect of received signal, so as to cause
Receiving the signal-to-noise ratio of signal reduces, and unfavorable modem is in the processing to signal.
Invention content
An embodiment of the present invention provides a kind of rf signal reception circuit, circuit board, chip and internet-of-things terminal, Neng Gou
The signal-to-noise ratio for receiving signal is promoted to a certain extent, and then improves modem to a certain extent and the processing of signal is imitated
Fruit.
The first aspect of the embodiment of the present invention provides a kind of rf signal reception circuit, which includes：Antenna circuit,
First filter circuit, switching circuit, the second filter circuit, low noise amplifier circuit and mixting circuit, second filter circuit
Including the first sub- filter circuit and the second sub- filter circuit；
The first sub- filter circuit includes：First filter part F1, second filter part F2, third filtering device F3 and
4th filtering device F4；The first end of the F1 is connect with the first end of the F2, and is the input terminal of the first sub- filter circuit,
The second end of the F2 is connect with the first end of the F3, and the second end of the F3 is connect with the first end of the F4, the F4
Second end connect with the second end of the F2；
The output terminal of the antenna circuit is connect with the input terminal of first filter circuit, first filter circuit
Output terminal is connect with the input terminal of the switching circuit, and the output terminal of the switching circuit is defeated with the described first sub- filter circuit
Enter end connection, the output terminal of the first sub- filter circuit is connect with the input terminal of the low noise amplifier circuit, the low noise
The output terminal of sound amplifying circuit is connect with the input terminal of the described second sub- filter circuit, the output terminal of the second sub- filter circuit
It is connect with the mixting circuit；
The low noise amplifier circuit includes amplifying circuit and absorbing circuit, and the absorbing circuit is used to inhibit the radio frequency
The moment concussion of voltage and high-frequency current in signal receiving circuit.
Optionally, the described first sub- filter circuit further includes：
5th filtering device F5, the 6th filtering device F6, the 7th filtering device F7 and the 8th filtering device F8；
The first end of the F5 is the input terminal of the described first sub- filter circuit, the of the second end of the F5 and the F6
The first end of one end and F7 connect, and the second end of the F6 is connect with the first end of the F8, the second end of the F7 and institute
State the second end connection of F8.
Optionally, the described second sub- filter circuit includes：
9th filtering device S1, the tenth filtering device S2, the 11st filtering device S3, the 12nd filtering device S4；It is described
The first end of S1 is the input terminal of the described second sub- filter circuit, the first end and S3 of the second end of the S1 and the S2
First end connects, and the second end of the S2 is connect with the first end of the S4, the second end of the S3 and the second end of the S4
Connection.
Optionally, the described second sub- filter circuit includes：
13rd filtering device S5, the 14th filtering device S6, the filters of the 15th filtering device S7 and the 16th
Wave device S8；The first end of the S5 be the described first sub- filter circuit input terminal, the second end of the S5 with
The first end of the S6 and the first end connection of S7, the second end of the S6 are connect with the first end of the S8, the S7's
Second end is connect with the second end of the S8.
Optionally, the low noise amplifier circuit includes the first amplifying circuit and the first absorbing circuit, and the low noise is put
Big circuit includes the first power supply, second source, third power supply, the first inductance, the second inductance, third inductance, the first field-effect crystalline substance
Body pipe, the second field-effect transistor and the first capacitance；
The output terminal of first power supply is connect with the first end of first inductance, the second end of first inductance with
The grid connection of first field-effect transistor, the source electrode of first field-effect transistor and the first of second inductance
End connection, the second end ground connection of second inductance, the input of the output terminal of the second source and first absorbing circuit
The connection of the grid of end and the second field-effect transistor, the output terminal ground connection of first absorbing circuit, second field-effect
The source electrode of transistor is connect with the drain electrode of first field-effect transistor, the drain electrode of second field-effect transistor with it is described
First end and third inductance the first end connection of first capacitance, the second end of the third inductance are defeated with the third power supply
Outlet connects.
Optionally, the low noise amplifier circuit includes the second amplifying circuit and the second absorbing circuit, wherein the second amplification
Circuit includes the 4th power supply, the 5th power supply, the 6th power supply, the 4th inductance, the 5th inductance, the 6th inductance, third field effect transistor
Pipe, the 4th field-effect transistor and the second capacitance；
The output terminal of 4th power supply is connect with the first end of the 4th inductance, the second end of the 4th inductance with
The connection of the first end of the grid of the third field-effect transistor and second absorbing circuit, the of second absorbing circuit
Two ends are grounded, and the source electrode of the third field-effect transistor is connect with the first end of the 5th inductance, the 5th inductance
Second end is grounded, and the drain electrode of the third field-effect transistor connect with the source electrode of the 4th field-effect transistor, and described the
The grid of four field-effect transistors is connect with the output terminal of the 5th power supply, the drain electrode of the 4th field-effect transistor and institute
State the first end of the 6th inductance and the first end connection of the second capacitance, second end and the 6th power supply of the 6th inductance
Output terminal connection.
Optionally, the absorbing circuit includes the RC circuits that third capacitance and first resistor form, wherein third capacitance and
First resistor is connected.
The second aspect of the embodiment of the present invention provides a kind of chip, which includes processor, power circuit and above-mentioned
The rf signal reception circuit that any possible realization method of first aspect or first aspect is appointed to be provided.
The third aspect of the embodiment of the present invention provides a kind of circuit board, which includes modem, at signal
Device and the chip of second aspect of embodiment of the present invention offer are provided.
The fourth aspect of the embodiment of the present invention provides a kind of terminal, which includes housing and third of the embodiment of the present invention
The circuit board that aspect provides.
The embodiment of the present invention has the advantages that：
By the second filter circuit of connecting between switching circuit and low noise amplifier circuit, the signal received is being led to
The first filter circuit is crossed to carry out after filtering for the first time, then carry out second of filtering, and include multiple wave filters in the second filter circuit
Part is attached by certain structure between multiple filtering devices, has preferable frequency-selecting effect, and then to noise signal needle
Property is further filtered out, promotes the signal-to-noise ratio of signal in circuit.Meanwhile it connects between the grid and ground of low noise
Absorbing circuit due to the work of switching circuit, can generate transient voltage so that very big change occurs in a short time for loop current
Change, after accessing absorbing circuit, absorb induced voltage, reduce circuit shock range, ensure that the normal work of circuit.
Description of the drawings
Technical solution in order to illustrate the embodiments of the present invention more clearly, below will be to needed in embodiment description
Attached drawing is briefly described.
Fig. 1 is a kind of rf signal reception circuit provided in an embodiment of the present invention；
Fig. 2 is a kind of structure diagram of possible first sub- filter circuit provided in an embodiment of the present invention；
Fig. 3 is the structure diagram of the first alternatively possible sub- filter circuit provided in an embodiment of the present invention；
Fig. 4 is a kind of possible low noise amplifier circuit structure diagram provided in an embodiment of the present invention；
Fig. 5 is alternatively possible low noise amplifier circuit structure diagram provided in an embodiment of the present invention；
Fig. 6 is a kind of possible absorbing circuit structure diagram provided in an embodiment of the present invention；
Fig. 7 is a kind of possible structure diagram an embodiment of the present invention provides chip；
Fig. 8 is a kind of possible structure diagram an embodiment of the present invention provides circuit board.
Specific embodiment
Below in conjunction with the attached drawing in embodiment of the present invention, the technical solution in embodiment of the present invention is carried out clear
Chu is fully described by, it is clear that described embodiment is only the reality of a part of embodiment of the present invention rather than whole
Apply mode.Based on the embodiment in the present invention, those of ordinary skill in the art institute without making creative work
The every other embodiment obtained, shall fall within the protection scope of the present invention.
Term " first ", " second " in description and claims of this specification and above-mentioned attached drawing etc. are for distinguishing
Different objects rather than for describing particular order.In addition, term " comprising " and " having " and their any deformations, it is intended that
It is to cover non-exclusive include.Such as process, method, system, product or the equipment for containing series of steps or unit do not have
The step of having listed or unit are defined in, but optionally further includes the step of not listing or unit or optionally also wraps
It includes for other intrinsic steps of these processes, method, product or equipment or unit.
" embodiment " is referred in the present invention it is meant that a particular feature, structure, or characteristic described can be in conjunction with the embodiments
Comprising at least one embodiment of the present invention.The phrase, which occurs, in each position in the description might not each mean phase
Same embodiment, nor the independent or alternative embodiment with other embodiments mutual exclusion.Those skilled in the art are explicitly
Implicitly understand, embodiment described in the invention can be combined with other embodiments.
Referring to Fig. 1, Fig. 1 is an embodiment of the present invention provides a kind of rf signal reception circuits.As described in Figure 1, the electricity
Road includes：Antenna circuit 101, the first filter circuit 102, switching circuit 103, the second filter circuit, low noise amplifier circuit 105
With mixting circuit 109, second filter circuit includes the first sub- 104 and second sub- filter circuit 108 of filter circuit；
The output terminal of the antenna circuit 101 is connect with the input terminal of first filter circuit 102, first filtering
The output terminal of circuit 101 is connect with the input terminal of the switching circuit 103, the output terminal of the switching circuit 103 and described the
The input terminal connection of one sub- filter circuit 104, output terminal and the low noise amplifier circuit of the first sub- filter circuit 104
105 input terminal connection, the input terminal of the output terminal of the low noise amplifier circuit 105 and the described second sub- filter circuit 108
Connection, the output terminal of the second sub- filter circuit 108 are connect with the mixting circuit 109；
The low noise amplifier circuit 105 includes amplifying circuit 107 and absorbing circuit 106, and the absorbing circuit 106 is used for
Inhibit moment concussion and the high-frequency current of voltage in rf signal reception circuit.
Optionally, the first filter circuit can be low-pass filter circuit, including input filter inductances low-pass filter circuit or electricity
Feel input type low-pass filter circuit, filter capacitor is used in power rectifier circuit, for filtering out alternating component, makes the direct current of output
Smoother, filter inductance is small to the impedance of direct current, big to the impedance of exchange, thus preferable filter effect can be obtained and direct current
Lose small, the current waveform for making output is more smooth.The type of low-pass filtering is selected as needed.
As shown in Fig. 2, for a kind of structure diagram of possible first sub- filter circuit 104, the first sub- filtered electrical
Road 104 includes：First filter part F1, second filter part F2, third filtering device F3 and the 4th filtering device F4；The F1
First end connect with the first end of the F2, and for the first sub- filter circuit input terminal, the second end of the F2 with it is described
The first end connection of F3, the second end of the F3 connect with the first end of the F4, and the of the second end of the F4 and the F2
Two ends connect.For signal by Vin input circuits, it is defeated finally to take voltage difference at tetra- filtering device second ends of F1/F2/F3/F4
Go out signal Vout.Optionally, wherein filtering device is resonator, and the sub- filter circuit of the structure is lattice SAW filter.
To the signal that receives after by the first filter circuit filter for the first time, by switching circuit and low noise
Second filter circuit of connecting between amplifying circuit carries out second of filtering again, and multiple wave filters are included in the second filter circuit
Part is attached by certain structure between multiple filtering devices, has preferable frequency-selecting effect, and then to noise signal needle
Property is further filtered out, promotes the signal-to-noise ratio of signal in circuit.Meanwhile it connects between the grid and ground of low noise
Absorbing circuit due to the work of switching circuit, can generate transient voltage so that very big change occurs in a short time for loop current
Change, after accessing absorbing circuit, absorb induced voltage, reduce circuit shock range, ensure that the normal work of circuit.
Optionally, as shown in figure 3, structure diagram for the first alternatively possible sub- filter circuit, first son
Filter circuit includes：5th filtering device F5, the 6th filtering device F6, the 7th filtering device F7 and the 8th filtering device F8；
The first end of the F5 is the input terminal of the described first sub- filter circuit, the of the second end of the F5 and the F6
The first end of one end and F7 connect, and the second end of the F6 is connect with the first end of the F8, the second end of the F7 and institute
State the second end connection of F8.For signal by Vin input circuits, the voltage difference for finally taking F8 both ends is output signal Vout.It is optional
, the subfilter part is resonator, which is trapezoidal sound surface filtering circuit.
Optionally, the second sub- filter circuit is structure as shown in Figure 2, alternatively, the second sub- filter circuit is as shown in Figure 3
Structure, meanwhile, the first sub- filter circuit may be the same or different with the second sub- filter circuit.
In the second above-mentioned filter circuit, using the first sub- filter circuit of two kinds of structures and the second sub- filter circuit group
, can be to the signal that receives after by the first filter circuit filter for the first time into the second filter circuit, then carry out second
Secondary filtering, and there is different connection structures comprising multiple filtering devices, multiple filtering devices in sub- filter circuit, have preferable
Frequency-selecting effect, and then noise signal is pointedly further filtered out, promotes the signal-to-noise ratio of signal in circuit.
Optionally, referring to Fig. 4, Fig. 4 is a kind of possible low noise amplifier circuit structure provided in an embodiment of the present invention
Schematic diagram.As shown in the figure, the low noise amplifier circuit include the first amplifying circuit and the first absorbing circuit 404, described first
Amplifying circuit includes the first power supply 401, second source 402, third power supply 403, the first inductance L1, the second inductance L2, third electricity
Feel L3, the first field-effect transistor T1, the second field-effect transistor T2 and the first capacitance C1；
The output terminal of first power supply 401 is connect with the first end of the first inductance L1, the first inductance L1's
Second end is connect with the grid G of the first field-effect transistor T1, the source S of the first field-effect transistor L1 with it is described
The first end connection of second inductance L2, the second end ground connection of the second inductance L2, the output terminal of the second source 402 and institute
State the grid G connection of the input terminal and the second field-effect transistor T2 of the first absorbing circuit 404, first absorbing circuit
404 output terminal ground connection, the source S of the second field-effect transistor T2 and the drain D of the first field-effect transistor T1
Connection, the drain D of the second field-effect transistor T2 and the first end of the first capacitance C1 and third inductance L3 first
End connection, the second end of the third inductance L3 are connect with the output terminal of the third power supply 403.Signal inputs electricity by
Road flows through L1, T1, T2, C1, finally the output signal at out.
Optionally, referring to Fig. 5, Fig. 5 is alternatively possible low noise amplifier circuit knot provided in an embodiment of the present invention
Structure schematic diagram, the low noise amplifier circuit includes the second amplifying circuit and the second absorbing circuit 504, wherein the second amplifying circuit
Including the 4th power supply 501, the 5th power supply 502, the 6th power supply 503, the 4th inductance L4, the 5th inductance L5, the 6th inductance L6, third
Field-effect transistor T3, the 4th field-effect transistor T4 and the second capacitance C2；
The output terminal of 4th power supply 501 is connect with the first end of the 4th inductance L4, the 4th inductance L4's
Second end is connect with the grid G of the third field-effect transistor T3 and the first end of second absorbing circuit 504, and described
The second end ground connection of two absorbing circuits 504, the source S of the third field-effect transistor T3 and the first of the 5th inductance L5
End connection, the second end ground connection of the 5th inductance L5, the drain D of the third field-effect transistor T3 and described 4th effect
The source S of transistor L4 is answered to connect, the grid G of the 4th field-effect transistor L4 and the output terminal of the 5th power supply 502
The of connection, the first end of the drain D of the 4th field-effect transistor T4 and the 6th inductance L6 and the second capacitance C2
One end connects, and the second end of the 6th inductance L6 is connect with the output terminal of the 6th power supply 503.Signal inputs electricity by
Road flows through L4, T3, T4, C2, finally the output signal at out.
It connects between the grid and ground of above-mentioned low noise amplifier circuit scene effect transistor absorbing circuit, due to switch electricity
The work on road can generate transient voltage so that and loop current changes a lot in a short time, after accessing absorbing circuit,
Induced voltage is absorbed, reduces circuit shock range, ensure that the normal work of circuit.
Optionally, referring to Fig. 6, Fig. 6 is a kind of possible absorbing circuit structure diagram provided in an embodiment of the present invention,
The absorbing circuit includes the RC circuits that third capacitance C3 and first resistor R1 is formed, and electric current is inputted from, is exported from out,
Middle third capacitance C3 and first resistor R1 series connection.
The absorbing circuit reduces circuit shock range, ensure that the normal work of circuit by series resistance and capacitance.
In embodiments of the present invention, by adding the first filter circuit before switching circuit, in low noise amplifier circuit two
The second filter circuit of end setting, is filtered the signal of input, improves the signal-to-noise ratio in circuit；By in low noise amplification
Absorbing circuit is added in circuit, circuit caused by absorbing instantaneous voltage shakes, and ensure that the normal work of circuit.
A kind of chip is provided in another embodiment of the present invention, which connects comprising radiofrequency signal as described in Figure 1
Receive circuit, power circuit and processor.Referring to Fig. 7, Fig. 7 is a kind of possible structure an embodiment of the present invention provides chip
Schematic diagram.As shown in fig. 7, chip includes：Power circuit 701, processor 702 and rf signal reception circuit 703.Above-mentioned power supply
For its major function of circuit 701 to provide power supply to the chip, it for example can be central processing that above-mentioned processor 702, which for example can be,
Device (Central Processing Unit, CPU), general processor, digital signal processor (Digital Signal
Processor, DSP), application-specific integrated circuit (Application-Specific Integrated Circuit, ASIC) is existing
Field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic device, hardware
Component or its arbitrary combination, rf signal reception circuit 703 are the either circuit described in above-described embodiment.
Another embodiment of the embodiment of the present invention provides a kind of circuit board, which includes modem, base band
The chip provided in signal processor and above-described embodiment.Referring to Fig. 8, Fig. 8 is an embodiment of the present invention provides circuit boards
A kind of possible structure diagram.As shown in figure 8, the circuit board includes：Modem 801, signal processor 802, chip
803 and bus 804.Modem 801, signal processor 802, chip 803 are connected by bus 804.Modem 801
Mainly for the treatment of wireless signal by treated the baseband signal of chip 803, signal processor 802 is mainly for the treatment of process
Signal after the demodulation of modem 801, chip 803 are mainly used for that radio frequency signal is handled to obtain baseband signal.
A kind of terminal is provided in another embodiment of the present invention, which includes foregoing circuit plate and housing.
Above specific embodiment has carried out into one the purpose, technical solution and advantageous effect of the embodiment of the present invention
Step is described in detail, it should be understood that these are only the specific embodiment of the embodiment of the present invention, is not used to limit this
The protection domain of inventive embodiments, all any modifications on the basis of the technical solution of the embodiment of the present invention, made are equal
Replace, improve etc., it should all be included within the protection domain of the embodiment of the present invention.
Claims (10)
1. a kind of rf signal reception circuit, which is characterized in that the circuit includes：Antenna circuit, the first filter circuit, switch
Circuit, the second filter circuit, low noise amplifier circuit and mixting circuit, second filter circuit include the first sub- filter circuit
With the second sub- filter circuit；
The first sub- filter circuit includes：First filter part F1, second filter part F2, third filtering device F3 and the 4th
Filtering device F4；The first end of the F1 is connect with the first end of the F2, and is the input terminal of the first sub- filter circuit, described
The second end of F1 is connect with the first end of the F3, and the second end of the F3 is connect with the first end of the F4, and the of the F4
Two ends are connect with the second end of the F2；
The output terminal of the antenna circuit is connect with the input terminal of first filter circuit, the output of first filter circuit
End is connect with the input terminal of the switching circuit, the input terminal of the output terminal of the switching circuit and the described first sub- filter circuit
Connection, the output terminal of the first sub- filter circuit are connect with the input terminal of the low noise amplifier circuit, and the low noise is put
The output terminal of big circuit is connect with the input terminal of the described second sub- filter circuit, the output terminal of the second sub- filter circuit and institute
State mixting circuit connection；
The low noise amplifier circuit includes amplifying circuit and absorbing circuit, and the absorbing circuit is used to inhibit the radiofrequency signal
The moment concussion of voltage and high-frequency current in receiving circuit.
2. circuit according to claim 1, which is characterized in that the first sub- filter circuit further includes：
5th filtering device F5, the 6th filtering device F6, the 7th filtering device F7 and the 8th filtering device F8；
The first end of the F5 is the input terminal of the described first sub- filter circuit, the second end of the F5 and the first end of the F6
And the first end connection of F7, the second end of the F6 are connect with the first end of the F8, the second end of the F7 and the F8
Second end connection.
3. circuit according to claim 1, which is characterized in that the second sub- filter circuit includes：
9th filtering device S1, the tenth filtering device S2, the 11st filtering device S3, the 12nd filtering device S4；
The first end of the S1 is the input terminal of the described second sub- filter circuit, the second end of the S1 and the first end of the S2
And the first end connection of S3, the second end of the S2 are connect with the first end of the S4, the second end of the S3 and the S4
Second end connection.
4. circuit according to claim 1, which is characterized in that the second sub- filter circuit includes：
13rd filtering device S5, the 14th filtering device S6, the 15th filtering device S7 and the 16th filtering device S8；It is described
The first end of S5 is the input terminal of the described first sub- filter circuit, the first end and S7 of the second end of the S5 and the S6
First end connects, and the second end of the S6 is connect with the first end of the S8, the second end of the S7 and the second end of the S8
Connection.
5. circuit according to claim 1, which is characterized in that the low noise amplifier circuit include the first amplifying circuit and
First absorbing circuit, first amplifying circuit include the first power supply, second source, third power supply, the first inductance, the second electricity
Sense, third inductance, the first field-effect transistor, the second field-effect transistor and the first capacitance；
The output terminal of first power supply is connect with the first end of first inductance, the second end of first inductance with it is described
The grid connection of first field-effect transistor, the source electrode of first field-effect transistor and the first end of second inductance connect
Connect, the second end of second inductance ground connection, the input terminal of the output terminal of the second source and first absorbing circuit with
And second field-effect transistor grid connection, first absorbing circuit output terminal ground connection, second field effect transistor
The source electrode of pipe is connect with the drain electrode of first field-effect transistor, the drain electrode of second field-effect transistor and described first
First end and third inductance the first end connection of capacitance, the second end of the third inductance and the output terminal of the third power supply
Connection.
6. circuit according to claim 1, which is characterized in that the low noise amplifier circuit include the second amplifying circuit and
Second absorbing circuit, wherein the second amplifying circuit includes the 4th power supply, the 5th power supply, the 6th power supply, the 4th inductance, the 5th electricity
Sense, the 6th inductance, third field-effect transistor, the 4th field-effect transistor and the second capacitance；
The output terminal of 4th power supply is connect with the first end of the 4th inductance, the second end of the 4th inductance with it is described
The first end connection of the grid of third field-effect transistor and second absorbing circuit, the second end of second absorbing circuit
Ground connection, the source electrode of the third field-effect transistor are connect with the first end of the 5th inductance, and the second of the 5th inductance
End ground connection, the drain electrode of the third field-effect transistor are connect with the source electrode of the 4th field-effect transistor, described 4th
The grid of effect transistor is connect with the output terminal of the 5th power supply, the drain electrode of the 4th field-effect transistor and described the
The first end of six inductance and the connection of the first end of the second capacitance, the second end of the 6th inductance are defeated with the 6th power supply
Outlet connects.
7. circuit according to claim 4 or 5, which is characterized in that the absorbing circuit includes third capacitance and the first electricity
Hinder the RC circuits of composition, wherein third capacitance and first resistor series connection.
8. a kind of chip, which is characterized in that the chip is included described in processor, power circuit and claim any one of 1-7
Rf signal reception circuit.
9. a kind of circuit board, which is characterized in that the circuit board includes modem, signal processor and claim 8 institute
The chip stated.
A kind of 10. terminal, which is characterized in that circuit board of the terminal described in including housing and claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101085.0A CN108155916A (en) | 2018-01-31 | 2018-01-31 | Rf signal reception circuit, circuit board, chip and terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810101085.0A CN108155916A (en) | 2018-01-31 | 2018-01-31 | Rf signal reception circuit, circuit board, chip and terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108155916A true CN108155916A (en) | 2018-06-12 |
Family
ID=62459448
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810101085.0A Pending CN108155916A (en) | 2018-01-31 | 2018-01-31 | Rf signal reception circuit, circuit board, chip and terminal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108155916A (en) |
Cited By (1)
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| TWI831310B (en) * | 2022-07-28 | 2024-02-01 | 瑞昱半導體股份有限公司 | Signal receiver and signal receiving method |
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| CN103517458A (en) * | 2013-09-29 | 2014-01-15 | 苏州华士无线科技有限公司 | WIFI long-distance transmission module with double-direction frequency conversion technology |
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| CN101064522A (en) * | 2006-04-24 | 2007-10-31 | 中兴通讯股份有限公司 | Multifunctional transceiver for time division duplexing system |
| CN101162912A (en) * | 2007-11-19 | 2008-04-16 | 上海士康射频技术有限公司 | Single chip radio frequency transceiver |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| TWI831310B (en) * | 2022-07-28 | 2024-02-01 | 瑞昱半導體股份有限公司 | Signal receiver and signal receiving method |
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Application publication date: 20180612 |