CN207427128U - RF front-end circuit and mobile terminal device - Google Patents
RF front-end circuit and mobile terminal device Download PDFInfo
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- CN207427128U CN207427128U CN201721524345.2U CN201721524345U CN207427128U CN 207427128 U CN207427128 U CN 207427128U CN 201721524345 U CN201721524345 U CN 201721524345U CN 207427128 U CN207427128 U CN 207427128U
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Abstract
The utility model proposes a kind of RF front-end circuit and mobile terminal device, wherein, RF front-end circuit includes：WCN antennas, diversity reception antenna, the first radio frequency path, the second radio frequency path and WCN transceivers；Wherein, WCN antennas are connected to WCN transceivers by the first radio frequency path, diversity reception antenna is connected to WCN transceivers by the second radio frequency path, when the GPS positioning of mobile terminal device is opened, WCN antennas and diversity reception antenna receive GPS signal simultaneously, and pass through the first radio frequency path and the GPS signal received is transmitted separately to WCN transceivers by the second radio frequency path.The technical solution receives GPS signal by the diversity reception antenna for being multiplexed mobile terminal device, the directionality of GPS signal is effectively improved, so as to improve the quality of reception of GPS signal.
Description
Technical field
The utility model is related to field of communication technology, in particular to RF front-end circuit and mobile terminal device.
Background technology
At present, as a large amount of popularizations of the mobile terminal devices such as mobile phone and location information are widely applied increasingly, multiple
Requirement under miscellaneous scene to the locating speed and precision of global position system is also higher and higher, while also to mobile terminal device
Antenna is strong with GPS (Global Position System, global positioning system) signal received by front radio-frequency access
Degree and quality propose challenge.
The characteristics of GPS satellite signal for intensity is weak, signal-to-noise ratio is low and there are multipath effect, receiver to loss of signal with
Noise is more sensitive, and when antenna directivity is bad, easily cause the intensity of GPS signal under signal-to-noise ratio easily several dB
Drop, so as to make a big impact to alignment quality.
Existing mobile terminal device under normal conditions only have a GPS antenna, and mostly with 2.4G＆5G WiFi
(Wireless Fidelity, WLAN) antenna duplexer, and when this designing scheme is applied to metal fuselage, nothing
Method ensures the good directionality of GPS antenna, such as when user converts the posture or ambient enviroment of handhold mobile terminal equipment
Variation cause in GPS signal degradation on the stronger direction of antenna, user just can only receive such case, without more
Selection.
But usually mobile terminal device usually has more antennas, directionality is also different, and only uses a day
Line realizes that the reception of GPS signal causes resource very big waste, therefore, how using mobile terminal device to have more antennas
Advantage improves the directionality of GPS signal, so as to improve the quality of reception of GPS signal.
Utility model content
The utility model is based on the above problem, it is proposed that a kind of new technical solution is set by being multiplexed mobile terminal
Standby diversity reception antenna receives GPS signal, the directionality of GPS signal is effectively improved, so as to improve connecing for GPS signal
Receive quality.
In view of this, according to the technical solution of the utility model first aspect, it is proposed that a kind of RF front-end circuit is used for
Mobile terminal device, including：WCN antennas, diversity reception antenna, the first radio frequency path, the second radio frequency path and WCN transceivers；
Wherein, WCN antennas are connected to WCN transceivers by the first radio frequency path, and diversity reception antenna is connected by the second radio frequency path
To WCN transceivers, when the GPS positioning of mobile terminal device is opened, WCN antennas and diversity reception antenna receive GPS letters simultaneously
Number, and pass through the first radio frequency path and the GPS signal received is transmitted separately to WCN transceivers by the second radio frequency path.
In the RF front-end circuit, when the GPS positioning of mobile terminal device is opened, except through WCN (Wireless
Connectivity Network, connec-tionless network) antenna and its corresponding first radio frequency path received outside GPS signal, also
Can GPS signal be received by diversity reception antenna and its corresponding second radio frequency path, specifically, diversity reception antenna can be with
For the Cellular DRX antennas (i.e. cellular network diversity reception antenna) of mobile terminal device, thus by being only used for receiving
Diversity reception antenna on increase reception to GPS signal, make GPS signal into WCN transceivers by increasing all the way as two-way,
It can not only effectively improve the directionality of GPS signal by realizing the diversity reception to GPS signal, while can also avoid
Since GPS signal is to disturbing the more sensitive transmitting signal for making mobile terminal device itself to cause bigger spirit to GPS signal
Sensitivity decline, the i.e. reception of realization GPS signal are effectively isolated with mobile terminal device its own transmission signal, so as to effectively improve
The quality of reception of GPS signal.
In addition, the RF front-end circuit that the utility model above-mentioned technical proposal provides also has following additional technical feature：
In the above-mentioned technical solutions, it is preferable that the second radio frequency path includes：Gating switch, double letter devices, the first GPS radio frequency
Sub-channel and Cellular radio frequencies sub-channel and diversity reception antenna are respectively connected to the first of double letter devices by gating switch
End and Cellular radio frequency sub-channels, it is double letter devices second ends and the 3rd end be respectively connected to the first GPS radio frequency sub-channel and
Cellular radio frequency sub-channels.
In the technical scheme, in order to ensure realizing the multiplexing to the diversity reception antenna of mobile terminal device, specifically,
Second radio frequency path include the first GPS radio frequency sub-channel for being used for transmission the GPS signal transmission that diversity reception antenna receives and
Be used for transmission the Cellular radio frequency sub-channels for the Cellular signals that diversity reception antenna receives, further this first
GPS radio frequency sub-channel passes sequentially through double letter devices and gating switch is connected to diversity reception antenna, to realize through diversity reception day
Line receives GPS signal and Cellular radio frequencies sub-channel on the one hand passes sequentially through double letter devices and gating switch is connected to diversity
On the other hand reception antenna is connected directly to diversity reception antenna by gating switch, then be elected to logical switching and be connected to this
Diversity reception antenna only carries out the reception of Cellular signals during Cellular radio frequency sub-channels, and elected logical switching connects
The reception of GPS signal and Cellular signals is carried out at the same time to diversity reception antenna during double letter devices, and by leading in the second radio frequency
Increased double letter devices realize the differentiation to two signals in road, so that GPS signal and Cellular signals pass through the first GPS respectively
Radio frequency sub-channel and Cellular radio frequency sub-channels enter WCN transceivers and Cellular transceivers, so as to effectively by two
Different frequency range signal separates, and realizes the diversity reception to GPS signal and Cellular signals.
In any of the above-described technical solution, it is preferable that the first GPS radio frequency sub-channel includes the first SAW filter and first
The second end of external low-noise amplifier and double letter devices passes sequentially through the first SAW filter and the first external low noise amplification
Device is connected to WCN transceivers；Cellular radio frequencies sub-channel includes diversity reception radio-frequency front-end module and Cellular transceivers,
And first end, second end and the 3rd end of diversity reception radio-frequency front-end module are respectively connected to the 3rd end of double letter devices, gating
Switch and Cellular transceivers.
In the technical scheme, it is used for transmission the first GPS radio frequency sub-channel of the GPS signal that diversity reception antenna receives
It is main to include being filtered signal and the first SAW filter of enhanced processing and the first external low noise amplification
The GPS signal for passing through processing raising signal quality is transmitted to WCN transceivers by device；And Cellular radio frequency sub-channels are specific
It is main include being filtered the Cellular signals that diversity reception antenna receives, the diversity reception of the processing such as Frequency Band Selection is penetrated
Frequency front end module and the Cellular transceivers that Cellular signals are further processed.
In any of the above-described technical solution, it is preferable that the first radio frequency path includes：Triplexer, network connection radio frequency are logical
Road and the second GPS radio frequency sub-channel, WCN antennas are connected to the first end of triplexer, the second end of triplexer and the 3rd end difference
Network connection radio frequency sub-channel and the second GPS radio frequency sub-channel are connected to, is realized respectively to network connection signal and GPS signal
It receives.
In the technical scheme, except above-mentioned the first newly-increased radio frequency sub-channel, which, which further includes, is used for
It realizes the second GPS radio frequency sub-channel being transmitted to the GPS signal that WCN antennas receive, further further includes for real
The network connection radio frequency sub-channel that the network connection signal now received to WCN antennas is transmitted, i.e., mainly by the second radio frequency
Sub-channel and network connection radio frequency sub-channel form the first radio frequency path of the RF front-end circuit, can simultaneously realize to network
The reception of signal and GPS signal is connected, specifically the second radio frequency sub-channel and network connection radio frequency sub-channel pass through triplexer
It is connected with the realization of WCN antennas.
In any of the above-described technical solution, it is preferable that network connection radio frequency sub-channel includes WiFi radio-frequency front-end modules, with
And the second end of triplexer is connected to WCN transceivers by WiFi radio-frequency front-end modules；Second GPS radio frequency sub-channel includes second
3rd end of SAW filter and the second external low-noise amplifier and triplexer passes sequentially through the second SAW filter and
Two external low-noise amplifiers are connected to WCN transceivers.
In the technical scheme, network connection radio frequency sub-channel specifically mainly includes connecting the network that WCN antennas receive
Connect signal be filtered, the WiFi radio-frequency front-end modules of the processing such as Frequency Band Selection, network connection signal is converted into WCN transmitting-receivings
The form that device can be further processed；And the second GPS radio frequency for being used for transmission the GPS signal that WCN reception antennas receive is logical
Road mainly includes being filtered signal and the second SAW filter of enhanced processing and the second external low noise are put
The GPS signal for passing through processing raising signal quality is transmitted to WCN transceivers by big device.
In any of the above-described technical solution, it is preferable that when mobile terminal device GPS positioning open, and WCN antennas and point
When collection reception antenna receives GPS signal simultaneously, the first signal of the GPS signal that the first GPS radio frequency sub-channel is received in WCN antennas
Quality is better than closing during the secondary signal quality for the GPS signal that diversity reception antenna receives, and only passes through the second GPS radio frequency sub-channel
GPS signal is received, wherein, secondary signal quality is better than given threshold；And second GPS radio frequency sub-channel in secondary signal quality
It is closed during better than the first signal quality, GPS signal is only received by the first GPS radio frequency sub-channel, wherein, the first signal quality is excellent
In given threshold.
In the technical scheme, when the GPS positioning of mobile terminal device is opened and the first radio frequency path and the second radio frequency lead to
Road is opened when can receive GPS signal simultaneously by WCN antennas and diversity reception antenna, and diversity reception antenna passes through choosing at this time
It opens up connection and is connected to double letter devices, the better antenna of signal quality that the GPS signal received specifically may be employed individually carries out GPS
The reception of signal, at this point, the signal quality for the GPS signal that WCN antennas and diversity reception antenna are respectively received is superior to set
Threshold value illustrates that the signal quality for the GPS signal that any antenna is separately received has been sufficient for the positioning of mobile terminal device
The given threshold of demand, wherein signal quality specifically can be true according to actual conditions such as mobile terminal device and its use environments
It is fixed.
In any of the above-described technical solution, it is preferable that as the GPS separately through WCN antennas or the reception of diversity reception antenna
When the signal quality of signal is less than given threshold, the first GPS radio frequency sub-channel and the second GPS radio frequency sub-channel are opened, so that
WCN antennas and diversity reception antenna receive GPS signal simultaneously.
In the technical scheme, the signal matter for the GPS signal being separately received when WCN antennas or the reception of diversity reception antenna
When amount is below given threshold, that is, movement can not be met by illustrating the signal quality for the GPS signal that any antenna is separately received
The location requirement of terminal device, can then open simultaneously the first GPS radio frequency sub-channel at this time and the second GPS radio frequency sub-channel is beaten
It opens, to receive GPS signal simultaneously by WCN antennas and diversity reception antenna, so as to effectively improve the directionality of GPS signal,
Improve the quality of reception of GPS signal.
In any of the above-described technical solution, it is preferable that gating switch includes double-point double-throw switch.
In the technical scheme, the gating switch in the second radio frequency path includes but not limited to double-point double-throw switch, can be with
Other kinds of switch is changed to according to actual use demand, to meet different user demands.
According to the technical solution of the utility model second aspect, it is proposed that a kind of mobile terminal device, including as above technology
RF front-end circuit any one of scheme.Therefore, which has any one of above-mentioned technical proposal institute
All advantageous effects for the RF front-end circuit stated, details are not described herein.
It is further preferred that mobile terminal device is smart mobile phone or palm PC.
The above-mentioned technical proposal of the utility model receives GPS letters by the diversity reception antenna for being multiplexed mobile terminal device
Number, the directionality of GPS signal is effectively improved, so as to improve the quality of reception of GPS signal.
Description of the drawings
Fig. 1 shows the schematic block diagram of the RF front-end circuit of the utility model embodiment；
Fig. 2 shows the configuration diagram of the RF front-end circuit of the utility model embodiment；
Fig. 3 shows the workflow schematic diagram of the RF front-end circuit of the utility model embodiment.
Specific embodiment
In order to be more clearly understood that the above-mentioned purpose of the utility model, feature and advantage, below in conjunction with the accompanying drawings and have
The utility model is further described in detail in body embodiment.It should be noted that in the case where there is no conflict, this Shen
The feature in embodiment and embodiment please can be mutually combined.
Many details are elaborated in the following description in order to fully understand the utility model, still, this practicality
New to be implemented using other different from other modes described here, therefore, the scope of protection of the utility model is simultaneously
From the limitation of following public specific embodiment.
The RF front-end circuit of the embodiment of the utility model is described in detail with reference to Fig. 1 to Fig. 3.
As shown in Figure 1, according to the RF front-end circuit of the utility model embodiment, for mobile terminal device, the radio frequency
Front-end circuit includes：WCN antennas 10, diversity reception antenna 30, the first radio frequency path 20, the second radio frequency path 40 and WCN transmitting-receivings
Device 50.
Wherein, WCN antennas 10 are connected to WCN transceivers 50 by the first radio frequency path 20, and diversity reception antenna 30 passes through
Second radio frequency path 40 is connected to WCN transceivers 50, when the GPS positioning of mobile terminal device is opened, WCN antennas 10 and diversity
Reception antenna 30 receives GPS signal simultaneously, and passes through the first radio frequency path 20 and the second radio frequency path 40 and believe the GPS received
Number it is transmitted separately to WCN transceivers 50.
In the RF front-end circuit, when the GPS positioning of mobile terminal device is opened, except through WCN antennas (i.e.
WiFi＆BT＆GPS antennas) and its corresponding first radio frequency path 20 receive GPS signal outside, diversity reception antenna can also be passed through
30 and its corresponding second radio frequency path 40 receive GPS signal, specifically, diversity reception antenna 30 can be mobile terminal device
Cellular DRX antennas (i.e. cellular network diversity reception antenna), thus by be only used for receive diversity reception antenna
Increase reception to GPS signal on 30, make GPS signal into WCN transceivers 50 that can not only be led to by increasing all the way as two-way
The diversity reception realized to GPS signal is crossed, the directionality of GPS signal is effectively improved, while can also avoid due to GPS signal
To the more sensitive transmitting signal for making mobile terminal device itself is disturbed bigger sensitivity to be caused to decline GPS signal, i.e.,
The reception of realization GPS signal is effectively isolated with mobile terminal device its own transmission signal, so as to effectively improve connecing for GPS signal
Receive quality.
Further, as shown in Fig. 2, the second radio frequency path 40 described in above-described embodiment includes：Gating switch 402,
Double letter devices 404, the first GPS radio frequency sub-channel and Cellular radio frequencies sub-channel and diversity reception antenna 30 are opened by gating
Close 402 first ends and Cellular radio frequency sub-channels for being respectively connected to double letter devices 404, the second end and the 3rd of double letter devices 404
End is respectively connected to the first GPS radio frequency sub-channel and Cellular radio frequency sub-channels.
In this embodiment, in order to ensure realizing the multiplexing to the diversity reception antenna 30 of mobile terminal device, specifically,
The first GPS radio frequency that second radio frequency path 40 includes being used for transmission the GPS signal transmission that diversity reception antenna 30 receives is logical
Road and the Cellular radio frequency sub-channels for being used for transmission the Cellular signals that diversity reception antenna 30 receives further should
First GPS radio frequency sub-channel passes sequentially through double letter devices 404 (i.e. Diplexer) and gating switch 402 is connected to diversity reception antenna
30, with realize by diversity reception antenna 30 receive GPS signal and Cellular radio frequencies sub-channel on the one hand pass sequentially through it is double
Letter device 404 and gating switch 402 are connected to diversity reception antenna 30, are on the other hand connected directly to point by gating switch 402
Collect reception antenna 30, then the diversity reception antenna 30 when the switching of gating switch 402 is connected to the Cellular radio frequency sub-channels
Carry out the reception of Cellular signals, and diversity reception antenna 30 is simultaneously when the switching of gating switch 402 is connected to double letter device 404
The reception of GPS signal and Cellular signals is carried out, and by increasing double 404 realizations pair of letter devices in the 40 of the second radio frequency path
The differentiation of two signals, so that GPS signal and Cellular signals are penetrated respectively by the first GPS radio frequency sub-channel and Cellular
Frequency sub-channel enters WCN transceivers 50 and Cellular transceivers 412, so as to which effectively two different frequency range signals be separated,
Realize the diversity reception to GPS signal and Cellular signals.
Further, as shown in Fig. 2, the first GPS radio frequency sub-channel includes setting low outside the first SAW filter 406 and first
The second end of noise amplifier 408 and double letter devices 404 passes sequentially through the first SAW filter 406 and the first external low noise
Amplifier 408 is connected to WCN transceivers 50；Cellular radio frequencies sub-channel includes 410 He of diversity reception radio-frequency front-end module
The first end of Cellular transceivers 412 and diversity reception radio-frequency front-end module 410, second end and the 3rd end connect respectively
To the 3rd end, gating switch 402 and the Cellular transceivers 412 of double letter devices 404.
In this embodiment, it is used for transmission the first GPS radio frequency sub-channel of the GPS signal that diversity reception antenna 30 receives
It is main to include being filtered signal and the first SAW filter 406 (i.e. SAW Filter, the sound table of enhanced processing
Surface wave wave filter) and the first external low-noise amplifier 408 (i.e. eLNA), the GPS letters that processing improves signal quality will be passed through
Number it is transmitted to WCN transceivers 50；And Cellular radio frequencies sub-channel specifically mainly includes what diversity reception antenna 30 was received
410 (i.e. FEM, the Front End of diversity reception radio-frequency front-end module of the processing such as Cellular signals are filtered, Frequency Band Selection
Module the Cellular transceivers 412) and to Cellular signals being further processed.
Further, as shown in Fig. 2, the first radio frequency path 20 described in above-described embodiment includes：Triplexer 202, net
Network connects radio frequency sub-channel and the second GPS radio frequency sub-channel, WCN antennas 10 are connected to the first end of triplexer 202, triplexer
202 second end and the 3rd end are respectively connected to network connection radio frequency sub-channel and the second GPS radio frequency sub-channel, respectively realization pair
The reception of network connection signal and GPS signal.
In this embodiment, except above-mentioned the first newly-increased radio frequency sub-channel, which further includes for real
The second GPS radio frequency sub-channel that the GPS signal now received to WCN antennas 10 is transmitted further is further included for real
The network connection radio frequency sub-channel that the network connection signal now received to WCN antennas 10 is transmitted, i.e., mainly penetrated by second
Frequency sub-channel and network connection radio frequency sub-channel form the first radio frequency path 20 of the RF front-end circuit, can realize simultaneously pair
The reception of network connection signal and GPS signal, specifically the second radio frequency sub-channel and network connection radio frequency sub-channel pass through three
Work device 202 (i.e. Triplexer) is connected with the realization of WCN antennas 10.
Further, as shown in Fig. 2, network connection radio frequency sub-channel includes WiFi radio-frequency front-ends module 204 and three works
The second end of device 202 is connected to WCN transceivers 50 by WiFi radio-frequency front-ends module 204；Second GPS radio frequency sub-channel includes the
Two SAW filters 206 and the 3rd end of the second external low-noise amplifier 208 and triplexer 202 pass sequentially through the rising tone
206 and second external low-noise amplifier 208 of table wave filter is connected to WCN transceivers 50.
In this embodiment, network connection radio frequency sub-channel specifically mainly includes connecting the network that WCN antennas 10 receive
Connect signal be filtered, the WiFi radio-frequency front-ends module 204 of the processing such as Frequency Band Selection, network connection signal is converted into WCN
The form that transceiver 50 can be further processed；And the 2nd GPS for being used for transmission the GPS signal that WCN reception antennas receive is penetrated
Frequency sub-channel mainly includes being filtered signal and the second SAW filter 206 and second of enhanced processing is external
The GPS signal for passing through processing raising signal quality is transmitted to WCN transceivers 50 by low-noise amplifier 208.
Further, in the above-described embodiments, when the GPS positioning of mobile terminal device is opened, and WCN antennas 10 and diversity
When reception antenna 30 receives GPS signal simultaneously, diversity reception antenna 30 is connected to double letter devices 404 by gating switch 402 at this time,
First GPS radio frequency sub-channel is received in the first signal quality of the GPS signal that WCN antennas 10 receive better than diversity reception antenna 30
GPS signal secondary signal quality when close, only by the second GPS radio frequency sub-channel receive GPS signal, wherein, second letter
Number quality is better than given threshold；And second GPS radio frequency sub-channel secondary signal quality be better than the first signal quality when close,
GPS signal is only received by the first GPS radio frequency sub-channel, wherein, the first signal quality is better than given threshold.
In this embodiment, when the GPS positioning of mobile terminal device is opened and the first radio frequency path 20 and the second radio frequency lead to
Road 40, which is opened, reception specifically may be employed by WCN antennas 10 and diversity reception antenna 30 while when receiving GPS signal
To the better antenna of signal quality of GPS signal individually carry out the reception of GPS signal, at this point, WCN antennas 10 and diversity reception
The signal quality for the GPS signal that antenna 30 is respectively received is superior to given threshold, that is, illustrates what any antenna was separately received
The signal quality of GPS signal has been sufficient for the location requirement of mobile terminal device, and the given threshold of wherein signal quality is specific
It can be determined according to actual conditions such as mobile terminal device and its use environments.
It is understood that its signal quality specifically can be weighed according to the signal strength and/or carrier-to-noise ratio of GPS signal.
Further, in the above-described embodiments, as the GPS separately through WCN antennas 10 or the reception of diversity reception antenna 30
When the signal quality of signal is less than given threshold, the first GPS radio frequency sub-channel and the second GPS radio frequency sub-channel are opened, so that
WCN antennas 10 and diversity reception antenna 30 receive GPS signal simultaneously.
When the signal quality that WCN antennas 10 or diversity reception antenna 30 receive the GPS signal being separately received is below setting
Determine threshold value, that is, determining for mobile terminal device can not be met by illustrating the signal quality for the GPS signal that any antenna is separately received
Position demand, can then open simultaneously the first GPS radio frequency sub-channel and the second GPS radio frequency sub-channel is opened, at this time to pass through WCN
Antenna 10 and diversity reception antenna 30 receive GPS signal simultaneously, so as to effectively improve the directionality of GPS signal, improve GPS letters
Number the quality of reception.
Specifically, the workflow of the RF front-end circuit is as shown in figure 3, specifically include below scheme step：
Step 302, diversity reception antenna 30 is controlled to switch to double letter devices 404 by gating switch 402, even if the first GPS
Radio frequency sub-channel and the second GPS radio frequency sub-channel open simultaneously, and are received simultaneously by WCN antennas 10 and diversity reception antenna 30
GPS signal；
Step 304, judge whether that the first signal quality of the GPS signal received by WCN antennas 10 connects better than diversity
The secondary signal quality for the GPS signal that antenna 30 receives is received, if performing step 306, otherwise performs step 308；
Step 306, diversity reception antenna 30 is controlled to switch to diversity reception radio-frequency front-end module by gating switch 402
410, to close the first GPS radio frequency sub-channel (closing the access by the reception GPS signal of diversity reception antenna 30), only with
WCN antennas 10 receive GPS signal and are positioned；
Step 308, diversity reception antenna 30 is controlled to remain attached to double letter devices 404 by gating switch 402, and closes the
Two GPS radio frequency sub-channels (close the access that GPS signal is received by WCN antennas 10), are connect only with diversity reception antenna 30
GPS signal is received to be positioned；
Step 310, judge the GPS signal received separately through WCN antennas 10 the first signal quality or separately through
Whether the secondary signal quality for the GPS signal that diversity reception antenna 30 receives is less than given threshold, if then return to step 302,
Control receives GPS signal by WCN antennas 10 and diversity reception antenna 30 simultaneously.
Further, in the above-described embodiments, gating switch 402 includes double-point double-throw switch (i.e. Double Pole
Double Throw, double-point double-throw switch).
In this embodiment, the gating switch 402 in the second radio frequency path 40 includes but not limited to double-point double-throw switch, can
To be changed to other kinds of switch according to actual use demand, to meet different user demands.
One embodiment as the utility model, it is also proposed that a kind of mobile terminal device, including an institute is performed as described above
The RF front-end circuit stated.Therefore, which there are all of RF front-end circuit described in above-described embodiment to have
Beneficial effect by increasing the reception to GPS signal on the diversity reception antenna for being only used for receiving, makes into WCN transceivers
GPS signal not only can effectively improve GPS signal by increasing all the way as two-way by realizing the diversity reception to GPS signal
Directionality, while can also avoid since GPS signal is to disturbing the more sensitive transmitting signal for making mobile terminal device itself
Bigger sensitivity is caused to decline to GPS signal, that is, realizes that GPS signal receives and mobile terminal device its own transmission signal
It is effectively isolated, so as to effectively improve the quality of reception of GPS signal.
Further, in the above-described embodiments, mobile terminal device is smart mobile phone or palm PC etc..
The technical solution of the embodiment of the utility model is described in detail above in association with attached drawing, is set by being multiplexed mobile terminal
Standby diversity reception antenna receives GPS signal, the directionality of GPS signal is effectively improved, so as to improve connecing for GPS signal
Receive quality.
In the embodiment of the utility model, term " first ", " second " and " the 3rd " is only used for the purpose of description, without
It is understood that indicate or imply relative importance, for the ordinary skill in the art, can manage as the case may be
Solve the concrete meaning of above-mentioned term in the embodiments of the present disclosure.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, for this
For the technical staff in field, various modifications and changes may be made to the present invention.It is all in the spirit and principles of the utility model
Within, any modifications, equivalent replacements and improvements are made should be included within the scope of protection of this utility model.
Claims (10)
1. a kind of RF front-end circuit, for mobile terminal device, which is characterized in that including：WCN antennas, diversity reception antenna,
First radio frequency path, the second radio frequency path and WCN transceivers；
Wherein, the WCN antennas are connected to the WCN transceivers, the diversity reception antenna by first radio frequency path
The WCN transceivers are connected to by second radio frequency path,
When the GPS positioning of the mobile terminal device is opened, the WCN antennas and the diversity reception antenna receive simultaneously
GPS signal, and pass through first radio frequency path and the GPS signal received is transmitted separately to institute by second radio frequency path
State WCN transceivers.
2. RF front-end circuit according to claim 1, which is characterized in that
Second radio frequency path includes：Gating switch, double letter devices, the first GPS radio frequency sub-channel and Cellular radio frequencies are logical
Road and
The diversity reception antenna is respectively connected to the first end of double letter devices and described by the gating switch
Cellular radio frequency sub-channels, the second end of double letter devices and the 3rd end are respectively connected to the first GPS radio frequency sub-channel
With the Cellular radio frequencies sub-channel.
3. RF front-end circuit according to claim 2, which is characterized in that
The first GPS radio frequency sub-channel includes the first SAW filter and the first external low-noise amplifier and described pair
The second end of letter device passes sequentially through first SAW filter and the first external low-noise amplifier is connected to the WCN
Transceiver；
The Cellular radio frequencies sub-channel includes diversity reception radio-frequency front-end module and Cellular transceivers and described point
First end, second end and the 3rd end of collection receiving radio frequency front end module are respectively connected to the 3rd end of double letter devices, the choosing
Open up pass and the Cellular transceivers.
4. RF front-end circuit according to claim 3, which is characterized in that first radio frequency path includes：Triplexer,
Network connection radio frequency sub-channel and the second GPS radio frequency sub-channel,
The WCN antennas are connected to the first end of the triplexer, and the second end of the triplexer and the 3rd end are respectively connected to
The network connection radio frequency sub-channel and the second GPS radio frequency sub-channel, are realized respectively to network connection signal and GPS signal
Reception.
5. RF front-end circuit according to claim 4, which is characterized in that
Second end of the network connection radio frequency sub-channel including WiFi radio-frequency front-ends module and the triplexer passes through described
WiFi radio-frequency front-end modules are connected to the WCN transceivers；
The second GPS radio frequency sub-channel includes the second SAW filter and the second external low-noise amplifier and described three
3rd end of work device passes sequentially through second SAW filter and the second external low-noise amplifier is connected to the WCN
Transceiver.
6. RF front-end circuit according to claim 5, which is characterized in that when the GPS positioning of the mobile terminal device
It opens, and when the WCN antennas and the diversity reception antenna receive GPS signal simultaneously,
The first GPS radio frequency sub-channel is better than the diversity in the first signal quality of the GPS signal that the WCN antennas receive
It is closed during the secondary signal quality for the GPS signal that reception antenna receives, GPS is only received by the second GPS radio frequency sub-channel
Signal, wherein, the secondary signal quality is better than given threshold；And
The second GPS radio frequency sub-channel is closed when the secondary signal quality is better than first signal quality, is only passed through
The first GPS radio frequency sub-channel receives GPS signal, wherein, first signal quality is better than the given threshold.
7. RF front-end circuit according to claim 6, which is characterized in that
It is set when separately through the signal quality of the WCN antennas or the GPS signal of diversity reception antenna reception less than described in
When determining threshold value, the first GPS radio frequency sub-channel and the second GPS radio frequency sub-channel are opened so that the WCN antennas and
The diversity reception antenna receives GPS signal simultaneously.
8. the RF front-end circuit according to any one of claim 2 to 7, which is characterized in that the gating switch includes
Double-point double-throw switch.
9. a kind of mobile terminal device, which is characterized in that including radio-frequency front-end electricity such as described in any item of the claim 1 to 8
Road.
10. mobile terminal device according to claim 9, the mobile terminal device is smart mobile phone or palm electricity
Brain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721524345.2U CN207427128U (en) | 2017-11-15 | 2017-11-15 | RF front-end circuit and mobile terminal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721524345.2U CN207427128U (en) | 2017-11-15 | 2017-11-15 | RF front-end circuit and mobile terminal device |
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| Publication Number | Publication Date |
|---|---|
| CN207427128U true CN207427128U (en) | 2018-05-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721524345.2U Withdrawn - After Issue CN207427128U (en) | 2017-11-15 | 2017-11-15 | RF front-end circuit and mobile terminal device |
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| CN (1) | CN207427128U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733451A (en) * | 2017-11-15 | 2018-02-23 | 珠海市魅族科技有限公司 | RF front-end circuit and mobile terminal device |
| WO2023115341A1 (en) * | 2021-12-21 | 2023-06-29 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
-
2017
- 2017-11-15 CN CN201721524345.2U patent/CN207427128U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107733451A (en) * | 2017-11-15 | 2018-02-23 | 珠海市魅族科技有限公司 | RF front-end circuit and mobile terminal device |
| WO2023115341A1 (en) * | 2021-12-21 | 2023-06-29 | Oppo广东移动通信有限公司 | Wireless communication method, terminal device, and network device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180529 Effective date of abandoning: 20200519 |