CN108181634A - A kind of GPS radio frequency front end receiver device and method - Google Patents
A kind of GPS radio frequency front end receiver device and method Download PDFInfo
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- CN108181634A CN108181634A CN201711258013.9A CN201711258013A CN108181634A CN 108181634 A CN108181634 A CN 108181634A CN 201711258013 A CN201711258013 A CN 201711258013A CN 108181634 A CN108181634 A CN 108181634A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S19/00—Satellite radio beacon positioning systems; Determining position, velocity or attitude using signals transmitted by such systems
- G01S19/01—Satellite radio beacon positioning systems transmitting time-stamped messages, e.g. GPS [Global Positioning System], GLONASS [Global Orbiting Navigation Satellite System] or GALILEO
- G01S19/13—Receivers
- G01S19/35—Constructional details or hardware or software details of the signal processing chain
- G01S19/36—Constructional details or hardware or software details of the signal processing chain relating to the receiver frond end
-
- 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
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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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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Position Fixing By Use Of Radio Waves (AREA)
Abstract
The present invention provides a kind of GPS radio frequency front end receiver device and method, wherein device includes signal receiver, the first tunable filter, the first low-noise amplifier, the second tunable filter, GPS receiver.Method includes step S10 and obtains GPS signal；The GPS signal of acquisition is carried out first order filtering process by step S20 according to first control signal；GPS signal after first order filtering process is carried out first order signal enhanced processing by step S30；GPS signal after signal enhanced processing is carried out second level filtering process by step S50 according to second control signal；Step S60 adjusts first control signal and second control signal respectively according to the GPS signal after the filtering process of the second level.The present invention receives the radiofrequency signal for meeting carrier-to-noise ratio and requiring by tunable filter and increase RF switch, realizes the purpose for the GPS sensitivity for effectively improving mobile communication equipment.
Description
Technical field
The present invention relates to wireless communication technology field, espespecially a kind of GPS radio frequency front end receiver device and method.
Background technology
Mobile communication rapidly develops, and the function that communication equipment integrates also gradually increases.Mobile equipment usually can all have
WIFI (Wireless Fidelity, WLAN), BT (Bluetooth, bluetooth), GPS (Global Positioning
System, global positioning system) three kinds of functions, and share an antenna, it is difficult to while realize ideal performance requirement.To wherein
The higher equipment of a kind of performance requirement, it usually needs the performance of other two function is sacrificed, to reach the property of required function
Energy.
The GPS radio frequency front-end circuit of communication equipment is by antenna, duplexer, wave filter, LNA (Low Noise at present
Amplifier, low-noise amplifier), GPS receiver composition.Wherein, the performance of wave filter is fixed, but in the band of wave filter
Loss and out-of-band noise rejection ability are the amounts of two contradiction, and band internal loss is excessive or out-of-band noise is excessive can dislike to a certain degree
Change GPS sensitivity.And the electromagnetic environment residing for communication equipment is continually changing, and the communications status of communication equipment itself also can
Change its electromagnetic environment, so the property that the wave filter of traditional fixed performance can not be optimal in the electromagnetic environment of variation
Energy.
On the other hand, the gain of LNA is in 20dB or so, and when GPS signal is bigger, GPS receiver can receive full
The signal of sufficient C/N (carrier-to-noise ratio) requirement, but when GPS signal is excessively faint, GPS receiver do not receive then meet C/N values will
The signal asked.If the LNA for selecting gain bigger, GPS receiver saturation can be made when GPS signal is bigger, so as to make C/N
Value declines.
For the above situation, this application provides a kind of technical solutions of solution more than technical problem.
Invention content
The object of the present invention is to provide a kind of GPS radio frequency front end receiver device and methods, pass through tunable filter and increasing
Add RF switch to receive the radiofrequency signal for meeting carrier-to-noise ratio requirement, realize the GPS sensitivity for effectively improving mobile communication equipment.
Technical solution provided by the invention is as follows：
A kind of GPS radio frequency front end receiver device, including signal receiver, the first tunable filter, the first low noise amplification
Device, the second tunable filter, GPS receiver；The signal receiver, for receiving GPS signal；The first adjustable filtering
Device is communicated with the signal receiver and is connected, for by the GPS signal received according to the from the GPS receiver
One control signal carries out first order filtering process；First low-noise amplifier is communicated with first tunable filter and is connected
It connects, for first order signal enhanced processing will to be carried out by the GPS signal after first order filtering process；Described second is adjustable
Wave filter is communicated with first low-noise amplifier and is connected, for will be by the GPS signal root after signal enhanced processing
Second level filtering process is carried out according to the second control signal from the GPS receiver；The GPS receiver, with described second
Tunable filter communication connection for receiving the GPS signal after the filtering process of the second level, and is believed according to the GPS
Number adjust the first control signal and the second control signal.
Preferably, the signal receiver includes：Antenna, duplexer；The antenna, for receiving penetrating in current spatial
Frequency signal, and the radiofrequency signal of reception is converted into electric signal；The duplexer is communicated with the antenna and is connected, is used for
The electric signal is detached, obtains GPS signal.
Preferably, RF switch, the second low-noise amplifier are further included；The RF switch, with first low noise
Amplifier communication connection, for the second low noise amplification according to the third control signal gating from the GPS receiver
Device；Second low-noise amplifier is communicated with the RF switch and is connected, will be through for when the RF switch is opened
The GPS signal for crossing first order signal enhanced processing carries out second level signal enhanced processing.
Preferably, the GPS receiver is additionally operable to adjust institute according to the GPS signal by second level filtering process
State third control signal.
Preferably, the GPS receiver is additionally operable to judge in the GPS signal after the filtering process of the second level
Whether load parameter of making an uproar meets preset requirement, when meeting preset requirement, by third control signal be adjusted to open described in penetrate
Frequency switchs, and when being unsatisfactory for preset requirement, third control signal is adjusted to close the RF switch.
The present invention also provides a kind of GPS radio frequency front-end receiving methods, are filled using aforementioned GPS radio frequency front end receiver
It puts, the method includes the steps S10 to obtain GPS signal；Step S20 is by the GPS signal of acquisition according to first control signal
Carry out first order filtering process；The GPS signal after first order filtering process is carried out first order signal and put by step S30
Big processing；The GPS signal after signal enhanced processing is carried out second level filtering by step S50 according to second control signal
Processing；Step S60 according to the GPS signal after the filtering process of the second level adjust respectively the first control signal and
The second control signal.
Preferably, step S10 is specifically included：Step S11 receives the radiofrequency signal in current spatial；Step S12 will be received
The radiofrequency signal be converted into electric signal；Step S13 detaches the electric signal after conversion, obtains GPS signal.
Preferably, it is further included between step S30 and step S50：Step S40 controls signal according to third, judges that radio frequency is opened
Whether pass opens, and when activated, the GPS signal after first order signal enhanced processing is carried out second level signal amplification
After processing, step S50 is performed, upon closing, performs step S50.
Preferably, it is further included after step S60：Step S70 is according to the GPS signal after the filtering process of the second level
Adjust the third control signal.
Preferably, step S70 is specifically included：Step S71 is judged in the GPS signal after the filtering process of the second level
Load parameter of making an uproar whether meet preset requirement；Step S72 when the load in the GPS signal make an uproar parameter meet preset requirement when, will
The third control signal is adjusted to open the RF switch；The load parameter of making an uproar that step S73 works as in the GPS signal is unsatisfactory for
During preset requirement, third control signal is adjusted to close the RF switch.
By GPS radio frequency front end receiver device and method provided by the invention, can bring following at least one beneficial to effect
Fruit：
1st, in the present invention, the signal needed outside signal band is filtered out using prime wave filter, is filtered out using rear class filtering device
Out of band signal in amplifier output signal, and prime wave filter and rear class filtering device are tunable filter, and pass through GPS and connect
Receipts machine is adjusted in real time according to the GPS signal of reception, so as to make the shadow with internal loss and out-of-band noise to the carrier-to-noise ratio of GPS signal
It rings minimum so that the performance that GPS sensitivity is optimal in the electromagnetic environment of variation.
2nd, in the present invention, it is selectable to use second level low-noise amplifier, by GPS receiver according to reception
GPS signal controls whether it accesses circuit, so as to carry out the amplification of different gains to the GPS signal of varying strength so that ensure
While normal signal carrier-to-noise ratio, ensure the transmission quality of size GPS signal, improve GPS signal acquisition sensitivity and tracking spirit
Sensitivity.
3rd, in the present invention, the GPS signal of reception and WIFI/BT Signal separators are come using duplexer, avoids enhancing
The performance of WIFI/BT signals is weakened while GPS signal performance, improves the tolerance of GPS accesses so that WIFI/BT leads to
Also there is the debugging space of bigger on road.
Description of the drawings
Below by a manner of clearly understandable, preferred embodiment is described with reference to the drawings, to a kind of GPS radio frequency front end receiver
Above-mentioned characteristic, technical characteristic, advantage and its realization method of device and method are further described.
Fig. 1 is the structure diagram of one embodiment of the GPS radio frequency front end receiver device of the present invention；
Fig. 2 is the structure diagram of another embodiment of the GPS radio frequency front end receiver device of the present invention；
Fig. 3 is the structure diagram of another embodiment of the GPS radio frequency front end receiver device of the present invention；
Fig. 4 is the flow chart of one embodiment of the GPS radio frequency front-end receiving method of the present invention；
Fig. 5 is the flow chart of another embodiment of the GPS radio frequency front-end receiving method of the present invention；
Fig. 6 is the flow chart of another embodiment of the GPS radio frequency front-end receiving method of the present invention；
Fig. 7 is the flow chart of another embodiment of the GPS radio frequency front-end receiving method of the present invention；
Fig. 8 is the flow chart of another embodiment of the GPS radio frequency front-end receiving method of the present invention.
Drawing reference numeral explanation：
1- signal receivers；The first tunable filters of 2-；The first low-noise amplifiers of 3-；The second tunable filters of 4-；5-
GPS receiver；6- RF switches；The second low-noise amplifiers of 7-；
11- antennas；12- duplexers.
Specific embodiment
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, control is illustrated below
The specific embodiment of the present invention.It should be evident that the accompanying drawings in the following description is only some embodiments of the present invention, for
For those of ordinary skill in the art, without creative efforts, other are can also be obtained according to these attached drawings
Attached drawing, and obtain other embodiments.
To make simplified form, part related to the present invention is only schematically shown in each figure, they are not represented
Its practical structures as product.In addition, so that simplified form is easy to understand, there is identical structure or function in some figures
Component only symbolically depicts one of those or has only marked one of those.Herein, "one" is not only represented
" only this " can also represent the situation of " more than one ".
The present invention provides a kind of one embodiment of GPS radio frequency front end receiver device, referring to Fig. 1, including：Signal receives
Device 1, the first tunable filter 2, the first low-noise amplifier 3, the second tunable filter 4, GPS receiver 5；The signal receives
Device 1, for receiving GPS signal；First tunable filter 2 is communicated with the signal receiver 1 and is connected, for that will receive
The GPS signal according to from the GPS receiver 5 first control signal carry out first order filtering process；Described first
Low-noise amplifier 3 is communicated with first tunable filter 2 and is connected, described in will be after first order filtering process
GPS signal carries out first order signal enhanced processing；Second tunable filter 4 is communicated with first low-noise amplifier 3
Connection, for that will be believed by the GPS signal after signal enhanced processing according to the second control from the GPS receiver 5
Number carry out second level filtering process；The GPS receiver 5 is communicated with second tunable filter 4 and is connected, and is passed through for receiving
It crosses the GPS signal after the filtering process of the second level, and the first control signal and described is adjusted according to the GPS signal
Second control signal.
Specifically, in the present embodiment, after signal receiver receives GPS signal, send it to the first adjustable filtering
Device is filtered, and the first tunable filter is prime wave filter, and the first tunable filter is according to the from GPS receiver
One controls Signal Regulation out-of-band noise rejection ability and with internal loss, and the target signal filter outside signal band will be needed to fall；Then will
The first low-noise amplifier is sent to by the filtered GPS signal of prime, the amplification of signal is carried out to faint GPS signal；
Then the second tunable filter will be sent to by amplified GPS signal, the first tunable filter is rear class filtering device, second
Tunable filter adjusts out-of-band noise rejection ability and with internal loss according to the second control signal from GPS receiver, and will
Out of band signal in amplified signal filters out；Then the GPS signal after rear class filtering is sent to GPS receiver, GPS
Receiver receives the GPS signal of filtered amplification, and uses it for GPS positioning, while according to the filtered amplification of reception
GPS signal adjustment update first control signal and second control signal, updated first control signal and the second control letter
Number continue to be respectively used to adjust front stage wave filter, that is, adjust the out-of-band noise rejection ability of front stage wave filter and with interior damage
Consumption so that the carrier-to-noise ratio combined influence of GPS signal that out-of-band noise and path loss receive GPS receiver is minimum, so as to
So that the GPS signal carrier-to-noise ratio that GPS receiver receives is maximum.
In the present invention, the signal needed outside signal band is filtered out using prime wave filter, is filtered out and put using rear class filtering device
Out of band signal in big device output signal, and prime wave filter and rear class filtering device are tunable filter, and pass through GPS receiver
Machine is adjusted in real time according to the GPS signal of reception, so as to make with the influence of internal loss and out-of-band noise to the carrier-to-noise ratio of GPS signal
It is minimum so that the performance that GPS sensitivity is optimal in the electromagnetic environment of variation.
On the basis of above example, the present invention also provides one embodiment, and with reference to Fig. 2, the signal receiver 1 wraps
It includes：Antenna 11, duplexer 12；The antenna 11, for receiving the radiofrequency signal in current spatial, and by the radio frequency of reception
Signal is converted into electric signal；The duplexer 12 is communicated with the antenna 11 and is connected, for the electric signal to be detached,
Obtain GPS signal.
Specifically, in the present embodiment, the hybrid radio frequency signal in antenna reception space first, including GPS signal, WIFI
Hybrid radio frequency signal, is then converted into the form of electric signal, subsequent conditioning circuit is facilitated to be handled by signal and BT signals；Duplexer
After the mixing electric signal that reception antenna is sent, mixing electric signal is detached, extracts GPS signal and WIFI/ respectively
BT signals, and GPS signal is sent to GPS radio frequency front end receiver circuit and is handled.
In the present invention, the GPS signal of reception and WIFI/BT Signal separators are come using duplexer, avoids enhancing GPS
The performance of WIFI/BT signals is weakened while signal performance, improves the tolerance of GPS accesses so that WIFI/BT accesses
There is the debugging space of bigger.
On the basis of above example, the present invention also provides one embodiment, with reference to Fig. 3, further include RF switch 6,
Second low-noise amplifier 7；The RF switch 6 is communicated with first low-noise amplifier 3 and is connected, and is come from for basis
Second low-noise amplifier 7 described in the third control signal gating of the GPS receiver 5；Second low-noise amplifier 7,
It communicates and connects with the RF switch 6, for when the RF switch 6 is opened, first order signal enhanced processing will to be passed through
The GPS signal carries out second level signal enhanced processing.
Specifically, in the present embodiment, after faint GPS signal is amplified by the first low-noise amplifier, it is sent to radio frequency
Switch, RF switch is opened or closed according to the third control signal from GPS receiver, when RF switch is closed, warp
The GPS signal for crossing first order amplification is sent directly to the second tunable filter and is filtered, when RF switch is opened, by the
After the GPS signal of level-one amplification is sent to the progress second level amplification of the second low-noise amplifier, retransmit to the second adjustable filter
Wave device is filtered.
In another preferred embodiment of the present embodiment, the GPS receiver 5 is additionally operable to according to by second
The GPS signal of grade filtering process adjusts the third control signal.
Specifically, in the present embodiment, the GPS signal after rear class filtering is sent to GPS receiver, GPS receiver
Machine receives the GPS signal of filtered amplification, and uses it for GPS positioning, while the GPS of the filtered amplification according to reception
Signal adjustment update third control signal, updated third control signal are used to control being turned on and off for RF switch.
In another preferred embodiment of the present embodiment, the GPS receiver 5 is additionally operable to judge by second
Whether the load parameter of making an uproar in the GPS signal after grade filtering process meets preset requirement, when meeting preset requirement, will described in
Third control signal is adjusted to open the RF switch 6, when being unsatisfactory for preset requirement, by third control signal adjustment
To close the RF switch 6.
Specifically, in the present embodiment, the GPS signal after rear class filtering is sent to GPS receiver, when GPS connects
When the GPS signal for the filtered amplification that receipts machine receives is still excessively faint, i.e., the carrier-to-noise ratio of the GPS signal of filtered amplification is still
It is old smaller, it is unfavorable for positioning, then GPS receiver can adjust update third control signal RF switch to be controlled to open, so as to connect
Enter the second low-noise amplifier, still faint GPS signal is further amplified, and then generate and be suitble to having more for positioning
The GPS signal of big carrier-to-noise ratio is to GPS receiver, so as to be positioned.
In the present invention, it is selectable to use second level low-noise amplifier, by GPS receiver according to the GPS of reception
Signal controls whether it accesses circuit, so as to carry out the amplification of different gains to the GPS signal of varying strength so that ensures normal
While signal carrier-to-noise ratio, ensure the transmission quality of size GPS signal, improve GPS signal acquisition sensitivity and tracking sensitivity.
The present invention also provides a kind of GPS radio frequency front-end receiving method, with reference to Fig. 4, including：Step S10 obtains GPS letters
Number；The GPS signal of acquisition is carried out first order filtering process by step S20 according to first control signal；Step S30 will pass through
The GPS signal after first order filtering process carries out first order signal enhanced processing；Step S50 will pass through signal enhanced processing
The GPS signal afterwards carries out second level filtering process according to second control signal；Step S60 is according at by second level filtering
The GPS signal after reason adjusts the first control signal and the second control signal respectively.
Specifically, in the present embodiment, after receiving GPS signal, it is subjected to first order filter according to first control signal
Wave, the first order are filtered into prime filtering, it would be desirable to which the target signal filter outside signal band falls；Then it is filtered faint will to pass through prime
GPS signal carry out signal amplification；Then it will pass through amplified GPS signal and second level filter is carried out according to second control signal
Wave, the second level are filtered into rear class filtering, and the out of band signal in amplified signal is filtered out；Then by filtered amplification
GPS signal is used for GPS positioning, at the same according to the GPS signal adjustment update first control signal of the filtered amplification of reception and
Second control signal, updated first control signal and second control signal continue to be respectively used to front stage filtering, that is, are used for
Adjust the out-of-band noise rejection ability of front stage filtering and with internal loss so that out-of-band noise and path loss are to GPS receiver
The carrier-to-noise ratio combined influence of the GPS signal received is minimum, so that the GPS signal carrier-to-noise ratio that GPS receiver receives is most
Greatly.
In the present invention, the signal needed outside signal band is filtered out using prime wave filter, is filtered out and put using rear class filtering device
Out of band signal in big device output signal, and prime wave filter and rear class filtering device are tunable filter, and pass through GPS receiver
Machine is adjusted in real time according to the GPS signal of reception, so as to make with the influence of internal loss and out-of-band noise to the carrier-to-noise ratio of GPS signal
It is minimum so that the performance that GPS sensitivity is optimal in the electromagnetic environment of variation.
On the basis of above example, the present invention also provides one embodiment, with reference to Fig. 5, including：Step S10 is specific
Including：Step S11 receives the radiofrequency signal in current spatial；The radiofrequency signal of reception is converted into electric signal by step S12；
Step S13 detaches the electric signal after conversion, obtains GPS signal.
Specifically, in the present embodiment, the hybrid radio frequency signal first in reception space, including GPS signal, WIFI signal
With BT signals, then hybrid radio frequency signal is converted into the form of electric signal, then mixing electric signal is detached, extracted respectively
Go out GPS signal and WIFI/BT signals, and GPS signal is sent to GPS radio frequency front end receiver circuit and is handled.
In the present invention, the GPS signal of reception and WIFI/BT Signal separators are come using duplexer, avoids enhancing GPS
The performance of WIFI/BT signals is weakened while signal performance, improves the tolerance of GPS accesses so that WIFI/BT accesses
There is the debugging space of bigger.
On the basis of above example, the present invention also provides one embodiment, with reference to Fig. 6, including：Step S30 and step
It is further included between rapid S50：Step S40 controls signal according to third, judges whether RF switch is opened, when activated, will pass through
After the GPS signal after first order signal enhanced processing carries out second level signal enhanced processing, step S50 is performed, works as closing
When, perform step S50.
Specifically, in the present embodiment, after faint GPS signal is amplified by first order signal, RF switch is sent to, is penetrated
Frequency switch controls signal to be opened or closed according to third, when RF switch is closed, by the GPS signal quilt of first order amplification
Second level filtering is carried out, when RF switch is opened, after the GPS signal by first order amplification carries out second level amplification by hair,
Second level filtering is carried out again.
On the basis of above example, the present invention also provides one embodiment, with reference to Fig. 7, including：After step S60
It further includes：Step S70 adjusts the third according to the GPS signal after the filtering process of the second level and controls signal.
Specifically, in the present embodiment, the GPS signal after rear class filtering is used for GPS positioning, while according to reception
Filtered amplification GPS signal adjustment update third control signal, updated third control signal is for controlling radio frequency
It switches on or closes.
On the basis of above example, the present invention also provides one embodiment, with reference to Fig. 8, including：Step S70 is specific
Including：The load that step S71 judges in the GPS signal after the filtering process of the second level make an uproar parameter whether meet it is default will
It asks；Step S72 when the load in the GPS signal make an uproar parameter meet preset requirement when, by the third control signal be adjusted to out
Open the RF switch；Step S73 when the load in the GPS signal make an uproar parameter be unsatisfactory for preset requirement when, by the third control
Signal processed is adjusted to close the RF switch.
Specifically, in the present embodiment, when the GPS signal of filtered amplification is still excessively faint, i.e., filtered amplification
GPS signal carrier-to-noise ratio it is still smaller, be unfavorable for positioning, then adjust update third control signal and RF switch is controlled to beat
It opens, so as to access second level signal amplification, still faint GPS signal is further amplified, and then generate and be suitble to positioning
The GPS signal with bigger carrier-to-noise ratio, so as to be positioned.
It is selectable in the present invention to use second level low-noise amplifier, believed by GPS receiver according to the GPS of reception
Number control whether it accesses circuit, so as to carry out the amplification of different gains to the GPS signal of varying strength so that ensure normal letter
While number carrier-to-noise ratio, ensure the transmission quality of size GPS signal, improve GPS signal acquisition sensitivity and tracking sensitivity.
On the basis of above example, the present invention also provides one embodiment, with reference to shown in Fig. 4-8, including：Step
S11 receives the radiofrequency signal in current spatial；The radiofrequency signal of reception is converted into electric signal by step S12；Step S13 will
The electric signal after conversion is detached, and obtains GPS signal；Step S20 is by the GPS signal of acquisition according to the first control
Signal carries out first order filtering process；The GPS signal after first order filtering process is carried out first order letter by step S30
Number enhanced processing；Step S40 controls signal according to third, judges whether RF switch is opened, when activated, will pass through the first order
After the GPS signal after signal enhanced processing carries out second level signal enhanced processing, step S50 is performed, upon closing, is performed
Step S50；The GPS signal after signal enhanced processing is carried out second level filter by step S50 according to second control signal
Wave processing；Step S60 according to the GPS signal after the filtering process of the second level adjust respectively the first control signal with
And the second control signal；The load that step S71 judges in the GPS signal after the filtering process of second level parameter of making an uproar is
It is no to meet preset requirement；Step S72 when the load in the GPS signal make an uproar parameter meet preset requirement when, the third is controlled
Signal is adjusted to open the RF switch；Step S73 when the load in the GPS signal make an uproar parameter be unsatisfactory for preset requirement when,
Third control signal is adjusted to close the RF switch.
Specifically, in the present embodiment, typical case scene description is as follows：
Then hybrid radio frequency signal is converted into the form of electric signal by the 1st, the hybrid radio frequency signal first in reception space,
And therefrom isolated GPS signal；
2nd, by GPS signal successively by prime filtering, the amplification of first order signal, rear class filtering；
3rd, when the GPS signal of filtered amplification is unsatisfactory for the carrier-to-noise ratio of requirement, adjustment update first control signal, the
Two control signals, third control signal；
4th, first control signal and second control signal adjust prime filtering and rear class filtering respectively, that is, adjust front stage filter
The out-of-band noise rejection ability of wave and with internal loss so that out-of-band noise and path loss integrate shadow to the carrier-to-noise ratio of GPS signal
Minimum is rung, so that the GPS signal carrier-to-noise ratio that GPS receiver receives is maximum.
5th, third control signal opens RF switch for controlling, so as to access second level signal amplification, to still faint
GPS signal be further amplified, and then generate be suitble to positioning the GPS signal with bigger carrier-to-noise ratio.
The present invention receives the radiofrequency signal for meeting carrier-to-noise ratio and requiring by tunable filter and increase RF switch, real
Now effectively improve the purpose of the GPS sensitivity of mobile communication equipment.
One of ordinary skill in the art will appreciate that：Realizing all or part of step of above method embodiment can pass through
The relevant hardware of program instruction is completed, and aforementioned program can be stored in a read/write memory medium, which is performing
When, perform step including the steps of the foregoing method embodiments；And aforementioned storage medium includes：ROM, RAM, magnetic disc or CD etc. are each
Kind can store the medium of program code.
It should be noted that the contents such as information exchange, implementation procedure in the present apparatus between each module and the above method are real
It applies example and is based on same design, particular content can be found in the narration in the method for the present invention embodiment, and details are not described herein again.
It should be noted that above-described embodiment can be freely combined as needed.The above is only the preferred of the present invention
Embodiment, it is noted that for those skilled in the art, in the premise for not departing from the principle of the invention
Under, several improvements and modifications can also be made, these improvements and modifications also should be regarded as protection scope of the present invention.
Claims (10)
1. a kind of GPS radio frequency front end receiver device, which is characterized in that including：Signal receiver, the first tunable filter, first
Low-noise amplifier, the second tunable filter, GPS receiver；
The signal receiver, for receiving GPS signal；
First tunable filter, with the signal receiver communicate connect, for by the GPS signal received according to
First order filtering process is carried out from the first control signal of the GPS receiver；
First low-noise amplifier is communicated with first tunable filter and is connected, for that will pass through at first order filtering
The GPS signal after reason carries out first order signal enhanced processing；
Second tunable filter is communicated with first low-noise amplifier and is connected, for that will pass through signal enhanced processing
The GPS signal afterwards carries out second level filtering process according to the second control signal from the GPS receiver；
The GPS receiver is communicated with second tunable filter and is connected, for receiving after the filtering process of the second level
The GPS signal, and the first control signal and the second control signal are adjusted according to the GPS signal.
2. GPS radio frequency front end receiver device according to claim 1, which is characterized in that the signal receiver includes：My god
Line, duplexer；
The radiofrequency signal of reception for receiving the radiofrequency signal in current spatial, and is converted into electric signal by the antenna；
The duplexer communicates with the antenna and connects, for the electric signal to be detached, obtains GPS signal.
3. GPS radio frequency front end receiver device according to claim 2, which is characterized in that further include：RF switch, second
Low-noise amplifier；
The RF switch is communicated with first low-noise amplifier and is connected, for according to the from the GPS receiver
Second low-noise amplifier described in three control signal gatings；
Second low-noise amplifier is communicated with the RF switch and is connected, will be through for when the RF switch is opened
The GPS signal for crossing first order signal enhanced processing carries out second level signal enhanced processing.
4. GPS radio frequency front end receiver device according to claim 3, it is characterised in that：
The GPS receiver is additionally operable to adjust the third control letter according to the GPS signal by second level filtering process
Number.
5. GPS radio frequency front end receiver device according to claim 4, it is characterised in that：
The GPS receiver, be additionally operable to judge the load in the GPS signal after the filtering process of the second level make an uproar parameter whether
Meet preset requirement, when meeting preset requirement, third control signal is adjusted to open the RF switch, when discontented
During sufficient preset requirement, third control signal is adjusted to close the RF switch.
6. a kind of GPS radio frequency front end receiver side applied to any GPS radio frequency front end receiver devices of claim 1-5
Method, which is characterized in that including：
Step S10 obtains GPS signal；
The GPS signal of acquisition is carried out first order filtering process by step S20 according to first control signal；
The GPS signal after first order filtering process is carried out first order signal enhanced processing by step S30；
Step S50 carries out the GPS signal after signal enhanced processing at the filtering of the second level according to second control signal
Reason；
Step S60 according to the GPS signal after the filtering process of the second level adjust respectively the first control signal and
The second control signal.
7. GPS radio frequency front-end receiving method according to claim 6, which is characterized in that step S10 is specifically included：
Step S11 receives the radiofrequency signal in current spatial；
The radiofrequency signal of reception is converted into electric signal by step S12；
Step S13 detaches the electric signal after conversion, obtains GPS signal.
8. GPS radio frequency front-end receiving method according to claim 6, which is characterized in that between step S30 and step S50
It further includes：
Step S40 controls signal according to third, judges whether RF switch is opened, when activated, will be put by first order signal
After the GPS signal progress second level signal enhanced processing that treated greatly, step S50 is performed, upon closing, performs step
S50。
9. GPS radio frequency front-end receiving method according to claim 8, which is characterized in that further included after step S60：
Step S70 adjusts the third according to the GPS signal after the filtering process of the second level and controls signal.
10. GPS radio frequency front-end receiving method according to claim 9, which is characterized in that step S70 is specifically included：
Whether the load that step S71 judges in the GPS signal after the filtering process of second level parameter of making an uproar meets preset requirement；
Step S72 when the load in the GPS signal make an uproar parameter meet preset requirement when, by the third control signal be adjusted to out
Open the RF switch；
Step S73 when the load in the GPS signal make an uproar parameter be unsatisfactory for preset requirement when, by the third control signal be adjusted to
Close the RF switch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258013.9A CN108181634A (en) | 2017-12-04 | 2017-12-04 | A kind of GPS radio frequency front end receiver device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711258013.9A CN108181634A (en) | 2017-12-04 | 2017-12-04 | A kind of GPS radio frequency front end receiver device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108181634A true CN108181634A (en) | 2018-06-19 |
Family
ID=62545529
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711258013.9A Withdrawn CN108181634A (en) | 2017-12-04 | 2017-12-04 | A kind of GPS radio frequency front end receiver device and method |
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| CN (1) | CN108181634A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552604A (en) * | 2021-07-26 | 2021-10-26 | 深圳市电咖测控科技有限公司 | Signal amplification circuit for GNSS receiver and receiver thereof |
| CN114035212A (en) * | 2022-01-10 | 2022-02-11 | 荣耀终端有限公司 | Receiving module, packaging structure, printed circuit board and electronic equipment |
| CN114696865A (en) * | 2022-03-30 | 2022-07-01 | Oppo广东移动通信有限公司 | Wireless communication device and control method thereof |
-
2017
- 2017-12-04 CN CN201711258013.9A patent/CN108181634A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113552604A (en) * | 2021-07-26 | 2021-10-26 | 深圳市电咖测控科技有限公司 | Signal amplification circuit for GNSS receiver and receiver thereof |
| CN114035212A (en) * | 2022-01-10 | 2022-02-11 | 荣耀终端有限公司 | Receiving module, packaging structure, printed circuit board and electronic equipment |
| CN114035212B (en) * | 2022-01-10 | 2022-05-20 | 荣耀终端有限公司 | Receiving module, packaging structure, printed circuit board and electronic equipment |
| WO2023131169A1 (en) * | 2022-01-10 | 2023-07-13 | 荣耀终端有限公司 | Receiving module, encapsulation structure, printed circuit board, and electronic device |
| CN114696865A (en) * | 2022-03-30 | 2022-07-01 | Oppo广东移动通信有限公司 | Wireless communication device and control method thereof |
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