CN106357293A - Radio-frequency circuit and wireless communication device provided with same - Google Patents
Radio-frequency circuit and wireless communication device provided with same Download PDFInfo
- Publication number
- CN106357293A CN106357293A CN201610758537.3A CN201610758537A CN106357293A CN 106357293 A CN106357293 A CN 106357293A CN 201610758537 A CN201610758537 A CN 201610758537A CN 106357293 A CN106357293 A CN 106357293A
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- frequency
- radio
- path
- signal
- demultiplexer
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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
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
-
- 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
- H04B1/005—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 adapting radio receivers, transmitters andtransceivers for operation on two or more bands, i.e. frequency ranges
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Transceivers (AREA)
- Noise Elimination (AREA)
Abstract
The invention provides a radio-frequency circuit and a wireless communication device provided with the same. The radio-frequency circuit comprises an antenna module, a transceiver, a first radio-frequency module and a second radio-frequency module, wherein the first radio-frequency module is connected with the transceiver and the antenna module and used for transceiving signals in a first frequency band and a second frequency band; the second radio-frequency module is connected with the transceiver and the antenna module and used for transceiving signals in a third frequency band; the first radio-frequency module comprises a first frequency-splitting filter and a second frequency-splitting filter which are connected in series, the transceiver is connected with the first frequency-splitting filter through a first radio-frequency path and a second radio-frequency path, the first frequency-splitting filter combines the first radio-frequency path with the second radio-frequency path into a common path and is connected to the second frequency-splitting filter through the common path, the second frequency-splitting filter divides the common path into a third radio-frequency path and a fourth radio-frequency path and is connected with the antenna module through the third radio-frequency path and the fourth radio-frequency path.
Description
Technical field
The present invention relates to communication technical field is and in particular to a kind of radio circuit and the radio communication with this radio circuit
Device.
Background technology
When the radio circuit of radio communication device carries out the signal transmission of multiple frequency ranges at present, wave filter is typically adopted to select
The frequency band signals that need to be transmitted, but wave filter is difficult to the higher hamonic wave producing in signals transmission is suppressed, these
Higher hamonic wave can lead to extraneous (as receiver) to be interfered, and meanwhile, also can reduce the sensitive of radio circuit itself receiving and transmitting signal
Degree.
Content of the invention
In view of the foregoing it is necessary to provide a kind of radio circuit improving radio-frequency performance.This radio circuit can suppress
The higher hamonic wave producing in signals transmission, reduces the interference of these higher hamonic waves (as receiver) to external world, improves meanwhile
Itself receiving signal sensitivity.
A kind of radio circuit, this radio circuit includes:
Anneta module；
Transceiver；And
First radio-frequency module, is connected with this transceiver and this Anneta module, for receiving and dispatching the signal of the first frequency range and the second frequency range；
Second radio-frequency module, is connected with this transceiver and this Anneta module, and for receiving and dispatching the signal of the 3rd frequency range, wherein, this
One radio-frequency module includes the first frequency demultiplexer and the second frequency demultiplexer connected, and this transceiver is penetrated through the first radio frequency path and second respectively
Frequency path is connected with this first frequency demultiplexer, and the first radio frequency path and the second radio frequency path are merged into public logical by this first frequency demultiplexer
Road, and connecting to the second frequency demultiplexer through this HW highway, this second frequency demultiplexer by this HW highway be divided into the 3rd radio frequency path and
4th radio frequency path, and be connected with this Anneta module through the 3rd radio frequency path and the 4th radio frequency path, the letter of this first frequency range
Number received and dispatched through this first radio frequency path, HW highway and the 3rd radio frequency path, the signal of this second frequency range second is penetrated through this
Frequency path, HW highway and the 4th radio frequency path are received and dispatched.
According to one preferred embodiment of the present invention, this second radio-frequency module includes low noise amplifier and the wave filter connected, should
Transceiver is connected with this low noise amplifier through the 5th radio frequency path, and this wave filter is connected with this Anneta module, the 3rd frequency range
Signal is received and dispatched through the 5th radio frequency path.
According to one preferred embodiment of the present invention, this transceiver includes the first pin, second pin and the 3rd pin, uses respectively
In this first radio frequency path of extraction, the second radio frequency path and the 5th radio frequency path, and through this first radio frequency path and the second radio frequency
Path is connected with this first radio-frequency module, is connected with this second module through the 5th radio frequency path.
According to one preferred embodiment of the present invention, this radio circuit also includes the 3rd frequency demultiplexer, the 3rd frequency demultiplexer one end with
This second frequency demultiplexer and this wave filter are connected, and the other end is connected with this Anneta module.
According to one preferred embodiment of the present invention, this Anneta module includes first antenna and the second antenna, and this first antenna is
Single-band antenna, for receiving and dispatching the signal of this first frequency range, this second antenna is dual-band antenna, for receiving and dispatching this second frequency range and being somebody's turn to do
The signal of the 3rd frequency range.
According to one preferred embodiment of the present invention, the letter of the signal of this first frequency range, the signal of the second frequency range and the 3rd frequency range
Number be respectively 2.4g frequency range, 5g frequency range and gps frequency range signal.
According to one preferred embodiment of the present invention, this first frequency demultiplexer and the second frequency demultiplexer are the double of support 2.4g and 5g frequency range
Frequency frequency demultiplexer.
A kind of radio communication device includes controller and the radio circuit that is connected with this controller it is characterised in that this is penetrated
Frequency circuit is above-mentioned radio circuit.
Compared to prior art, the radio circuit of the present invention can support 2.4g, 5g and gps multiband wireless communications, and it first
Radio-frequency module to realize the process of radiofrequency signal using the first frequency demultiplexer of a pair of cascade and the second frequency demultiplexer.Due to this first frequency
Point device and the second frequency demultiplexer have good isolation effect between height frequency range, and this frequency demultiplexer both can suppress the effectively
One frequency band signals receive and dispatch path produce higher harmonic components, alternatively second frequency band signals receive and dispatch path play low-pass filtering
Effect, thus the interference of subharmonic (as receiver) to external world can be effectively reduced moreover it is possible to improve itself receipt signal sensitive
Degree.
Brief description
It is the circuit diagram of the radio circuit of present pre-ferred embodiments shown in Fig. 1.
Main element symbol description
| Radio circuit | 100 |
| Transceiver | 10 |
| First pin | 11 |
| Second pin | 13 |
| 3rd pin | 15 |
| First radio-frequency module | 30 |
| First frequency demultiplexer | 31 |
| Second frequency demultiplexer | 33 |
| Second radio-frequency module | 50 |
| Low noise amplifier | 51 |
| Wave filter | 53 |
| Anneta module | 70 |
| First antenna | 71 |
| Second antenna | 73 |
| 3rd frequency demultiplexer | 90 |
Following specific embodiment will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is purged, complete
Site preparation description is it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.
Based on the embodiment in the present invention, those of ordinary skill in the art institute on the premise of not making creative work
The every other embodiment obtaining, broadly falls into the scope of protection of the invention.
With reference to shown in Fig. 1, it is the circuit diagram of the radio circuit of present pre-ferred embodiments.This radio circuit 100 is used for moving
Mobile phone, pda(personal digital assistant, personal digital assistant) etc. radio communication device, its can with wireless
Controller in communicator is connected, and carries out the transmitting-receiving of the signal of multiple frequency ranges.This radio circuit 100 include transceiver 10,
One radio-frequency module 30, the second radio-frequency module 50 and Anneta module 70.This first radio-frequency module 30 and this second radio-frequency module 50
Connect between this transceiver 10 and this Anneta module 70, this first radio-frequency module 30 is used for transmitting-receiving the first frequency range and the second frequency range
Signal, this first radio-frequency module 30 be used for transmitting-receiving the 3rd frequency range signal.In this preferred embodiment, the letter of this first frequency range
Number, the signal of the signal of the second frequency range and the 3rd frequency range be respectively the signal of 2.4g frequency range, 5g frequency range and gps frequency range.
This transceiver 10 includes the first pin 11, second pin 13 and the 3rd pin 15, is respectively used to extraction and is used for receiving and dispatching
First radio frequency path of the signal of the signal of this first frequency range, the signal of the second frequency range and the 3rd frequency range, the second radio frequency path and
5th radio frequency path.Wherein, this first pin 11 and second pin 13 are respectively through this first radio frequency path and the second radio frequency path
It is connected with this first radio-frequency module 30, the 3rd pin 15 is connected with this second radio-frequency module 50 through the 5th radio frequency path.
This first radio-frequency module 30 include connect the first frequency demultiplexer 31 and the second frequency demultiplexer 33, the first of this transceiver 10
Pin 11, second pin 13 are connected with this first frequency demultiplexer 31 through the first radio frequency path and the second radio frequency path respectively, and this first
First radio frequency path and the second radio frequency path are incorporated into HW highway frequency demultiplexer 31, and are sent to the second frequency through this HW highway
Divide device 33, this HW highway is divided into the 3rd radio frequency path and the 4th radio frequency path by this second frequency demultiplexer 33, and penetrates through the 3rd
Frequency path and the 4th radio frequency path are connected with this Anneta module 70.
This second radio-frequency module 50 includes low noise amplifier 51 and the wave filter 53 connected, and the 3rd pin 15 is penetrated through the 5th
Frequency path is connected with this low noise amplifier 51, and this wave filter 53 is connected with this Anneta module 70.Preferably, this wave filter 53 is choosing
Frequency wave filter.
This Anneta module 70 includes first antenna 71 and the second antenna 73, and this first antenna 71 is single-band antenna, for receiving
Send out the signal of this first frequency range.This second antenna is dual-band antenna 73, for receiving and dispatching the letter of this second frequency range and the 3rd frequency range
Number.In this preferred embodiment, this first antenna 71 is the single-band antenna of 5g frequency range for working frequency range, and this first antenna 71 is to divide
From single-band antenna, therefore, there is enough antenna efficiencies.This second antenna 73 is the double of 2.4g and gps frequency range for working frequency range
Frequency antenna, can improve the space availability ratio in this radio communication device.
Using this radio circuit 100 send the first frequency range (as 2.4g frequency range) wireless signal and the second frequency range (as 5g frequency
Section) wireless signal when, the first pin 11 of this transceiver 10, second pin 13 are by the letter of the signal of the first frequency range and the second frequency range
Number the first frequency demultiplexer 31 is sent to by the first radio frequency path and the second radio frequency path, through the first frequency demultiplexer 31 by this first frequency range
Signal and the signal mixing of the second frequency range be sent to HW highway, and be sent to the second frequency demultiplexer 33 through this HW highway, the
Two frequency demultiplexers 33 separate the 3rd radio frequency path and the 4th radio frequency path by this HW highway, and by the signal of this first frequency range through being somebody's turn to do
3rd radio frequency path to this first antenna 71, the signal of this second frequency range through the 4th radio frequency path to the second antenna 73, by
One antenna 71 and the second antenna 72 are transmitted.
Correspondingly, wireless signal and second frequency range of the first frequency range (as 2.4g frequency range) is received using this radio circuit 100
During (as 5g frequency range) wireless signal, this first antenna 71 and the second antenna 72 receive signal and second frequency of this first frequency range respectively
The signal of section, and through the 3rd radio frequency path and the 4th radio frequency path, the signal of the signal of this first frequency range and the second frequency range is transmitted
To the second frequency demultiplexer 33, the signal mixing of the signal of this first frequency range and the second frequency range is sent to public by this second frequency demultiplexer 33
Path, and it is sent to the first frequency demultiplexer 31 through this HW highway, the first frequency demultiplexer 31 is led to by the first radio frequency path and the second radio frequency
The first pin 11 and second that the signal of the signal of this first frequency range and the second frequency range is respectively sent to this transceiver 10 is drawn by road
Foot 13.
When carrying out signal transmitting and receiving, the signal of the signal of this first frequency range and the second frequency range can be existed by this first frequency demultiplexer 31
The out-of-band noise that optical mixing process produces or higher hamonic wave filter, and this second frequency demultiplexer 33 can will introduce hash in radio frequency path
Filter, thus improving the quality of signal transmission.Meanwhile, this can progressively to this first frequency demultiplexer 31 of cascade and the second frequency demultiplexer 33
The out-of-band harmonics introducing from first antenna 71 and the second antenna 73 are filtered, thus improving its sensitivity.
In addition, in this preferred embodiment, this first frequency demultiplexer 31 and the second frequency demultiplexer 33 are to support 2.4g and 5g frequency range
Double frequency frequency demultiplexer it can be ensured that the signal of 2.4g and 5g frequency range in transmitting procedure between there is certain isolation, this feature
Make the decay that the type device will be larger to the second_harmonic generation of 2.4g signal.Therefore, when transceiver 10 launches 2.4g
During frequency band signals, the introducing of the second frequency demultiplexer 33 will improve the rejection ability of the second harmonic to this frequency band signals.
Using this radio circuit 100 send the 3rd frequency range (as gps frequency range) wireless signal when, the 3rd of this transceiver 10 the
The signal of the 3rd frequency range is sent by the 5th radio frequency path and carries out signal amplification to low noise amplifier 51 by pin 15, then through filtering
After ripple device 53 filters out-of-band harmonics and noise, it is sent to the second antenna 73 and carries out signal transmission.
Using this radio circuit 100 receive the 3rd frequency range (as gps frequency range) wireless signal when, this second antenna 73 receives
The signal of the 3rd frequency range, and it is sent to this wave filter 53, this wave filter 53 is in the wireless signal filtering the 3rd channel
After out-of-band harmonics and noise, this low noise amplifier 51 is resent to transceiver 10 to the amplification of its signal.
When carrying out the signal transmitting and receiving of the 3rd frequency range, because the first frequency demultiplexer 31 and the second frequency demultiplexer 33 are to low-frequency range such as 5g
Frequency range signal below has good filter effect, can filtering low segment signal effectively, thus preventing low-frequency range transmitting letter
Number being coupled to receiving path produces interference to it.Therefore, this first frequency demultiplexer 31 and the second frequency demultiplexer 33 can effectively improve 5g
The sensitivity of UHF band reception signal.
In another preferred embodiment of the present invention, this radio circuit also includes the 3rd frequency demultiplexer 90, the 3rd frequency demultiplexer
90 one end are connected with this second frequency demultiplexer 33 and this wave filter 53, and the other end is connected with this Anneta module 70, for by this second
After the signal of signal and the 3rd frequency range that antenna 73 is received this second frequency range carries out separating, then it is respectively sent to this second frequency division
Device 33 and this wave filter 53.
The radio circuit 100 of the present invention can support 2.4g, 5g and gps multiband wireless communications, and its first radio-frequency module 30 is adopted
Realize the process of radiofrequency signal with first frequency demultiplexer 31 and the second frequency demultiplexer 33 of a pair of cascade.Due to this first frequency demultiplexer 31
And second frequency demultiplexer 33 there is between height frequency range good isolation effect, this frequency demultiplexer both can suppress first effectively
Frequency band signals receive and dispatch the higher harmonic components that path produces, and the low-pass filtering that plays that the alternatively second frequency band signals receive and dispatch path is made
With, thus effectively suppression high order to external world (as receiver) interference moreover it is possible to improve the sensitivity of itself receipt signal.
It is obvious to a person skilled in the art that the invention is not restricted to the details of above-mentioned one exemplary embodiment, Er Qie
In the case of the spirit or essential attributes of the present invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, embodiment all should be regarded as exemplary, and be nonrestrictive, the scope of the present invention is by appended power
Profit requires rather than described above limits, it is intended that all in the implication and scope of the equivalency of claim by falling
Change is included in the present invention.Any reference in claim should not be considered as limiting involved claim.This
Outward it is clear that " inclusion " one word is not excluded for other units or, odd number is not excluded for plural number.Multiple units of statement in system claims
Or device can also be realized by software or hardware by a unit or device.The first, the second grade word is used for representing name
Claim, and be not offered as any specific order.
Finally it should be noted that above example is only in order to illustrate technical scheme and unrestricted, although reference
Preferred embodiment has been described in detail to the present invention, it will be understood by those within the art that, can be to the present invention's
Technical scheme is modified or equivalent, without deviating from the spirit and scope of technical solution of the present invention.
Claims (8)
1. a kind of radio circuit is it is characterised in that this radio circuit includes:
Anneta module；
Transceiver；And
First radio-frequency module, is connected with this transceiver and this Anneta module, for receiving and dispatching the signal of the first frequency range and the second frequency range；
Second radio-frequency module, is connected with this transceiver and this Anneta module, and for receiving and dispatching the signal of the 3rd frequency range, wherein, this
One radio-frequency module includes the first frequency demultiplexer and the second frequency demultiplexer connected, and this transceiver is penetrated through the first radio frequency path and second respectively
Frequency path is connected with this first frequency demultiplexer, and the first radio frequency path and the second radio frequency path are merged into public logical by this first frequency demultiplexer
Road, and connecting to the second frequency demultiplexer through this HW highway, this second frequency demultiplexer by this HW highway be divided into the 3rd radio frequency path and
4th radio frequency path, and be connected with this Anneta module through the 3rd radio frequency path and the 4th radio frequency path, the letter of this first frequency range
Number received and dispatched through this first radio frequency path, HW highway and the 3rd radio frequency path, the signal of this second frequency range second is penetrated through this
Frequency path, HW highway and the 4th radio frequency path are received and dispatched.
2. radio circuit as claimed in claim 1 is it is characterised in that this second radio-frequency module includes the low noise amplifier connected
And wave filter, this transceiver is connected with this low noise amplifier through the 5th radio frequency path, and this wave filter is connected with this Anneta module, should
The signal of the 3rd frequency range is received and dispatched through the 5th radio frequency path.
3. radio circuit as claimed in claim 2 is it is characterised in that this transceiver includes the first pin, second pin and
Three pins, are respectively used to draw this first radio frequency path, the second radio frequency path and the 5th radio frequency path, and lead to through this first radio frequency
Road and the second radio frequency path are connected with this first radio-frequency module, are connected with this second module through the 5th radio frequency path.
4. radio circuit as claimed in claim 2 is it is characterised in that this radio circuit also includes the 3rd frequency demultiplexer, and the 3rd
Frequency demultiplexer one end is connected with this second frequency demultiplexer and this wave filter, and the other end is connected with this Anneta module.
5. radio circuit as claimed in claim 3 is it is characterised in that this Anneta module includes first antenna and the second antenna,
This first antenna is single-band antenna, and for receiving and dispatching the signal of this first frequency range, this second antenna is dual-band antenna, for receiving and dispatching this
Second frequency range and the signal of the 3rd frequency range.
6. radio circuit as claimed in claim 1 it is characterised in that the signal of this first frequency range, the signal of the second frequency range and
The signal of the 3rd frequency range is respectively the signal of 2.4g frequency range, 5g frequency range and gps frequency range.
7. radio circuit as claimed in claim 6 is it is characterised in that this first frequency demultiplexer and the second frequency demultiplexer are to support 2.4g
Double frequency frequency demultiplexer with 5g frequency range.
8. a kind of radio communication device includes controller and the radio circuit that is connected with this controller it is characterised in that this radio frequency
Circuit is the radio circuit described in claim 1-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610758537.3A CN106357293B (en) | 2016-08-30 | 2016-08-30 | Radio circuit and wireless communication device with the radio circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610758537.3A CN106357293B (en) | 2016-08-30 | 2016-08-30 | Radio circuit and wireless communication device with the radio circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106357293A true CN106357293A (en) | 2017-01-25 |
| CN106357293B CN106357293B (en) | 2019-03-22 |
Family
ID=57856986
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610758537.3A Active CN106357293B (en) | 2016-08-30 | 2016-08-30 | Radio circuit and wireless communication device with the radio circuit |
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| Country | Link |
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| CN (1) | CN106357293B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889281A (en) * | 2019-03-27 | 2019-06-14 | 深圳前海达闼云端智能科技有限公司 | A kind of antenna detection device |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882941A (en) * | 2010-07-07 | 2010-11-10 | 中兴通讯股份有限公司 | Device and equipment for quadruple-frequency transceiving of global mobile communication system |
| CN102946257A (en) * | 2012-11-05 | 2013-02-27 | 中兴通讯股份有限公司 | Multi-mode receiver and receiving method of multi-mode receiver |
| US20140315497A1 (en) * | 2013-04-19 | 2014-10-23 | Htc Corporation | Wireless communication apparatus and antenna switching method thereof |
| CN105553499A (en) * | 2015-10-29 | 2016-05-04 | 东莞酷派软件技术有限公司 | Mobile terminal radio frequency front-end and mobile terminal |
| CN105634569A (en) * | 2015-12-31 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Control circuit and terminal achieving carrier aggregation and WIFI double-frequency MIMO |
-
2016
- 2016-08-30 CN CN201610758537.3A patent/CN106357293B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101882941A (en) * | 2010-07-07 | 2010-11-10 | 中兴通讯股份有限公司 | Device and equipment for quadruple-frequency transceiving of global mobile communication system |
| CN102946257A (en) * | 2012-11-05 | 2013-02-27 | 中兴通讯股份有限公司 | Multi-mode receiver and receiving method of multi-mode receiver |
| US20140315497A1 (en) * | 2013-04-19 | 2014-10-23 | Htc Corporation | Wireless communication apparatus and antenna switching method thereof |
| CN105553499A (en) * | 2015-10-29 | 2016-05-04 | 东莞酷派软件技术有限公司 | Mobile terminal radio frequency front-end and mobile terminal |
| CN105634569A (en) * | 2015-12-31 | 2016-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Control circuit and terminal achieving carrier aggregation and WIFI double-frequency MIMO |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109889281A (en) * | 2019-03-27 | 2019-06-14 | 深圳前海达闼云端智能科技有限公司 | A kind of antenna detection device |
| CN109889281B (en) * | 2019-03-27 | 2021-09-28 | 深圳前海达闼云端智能科技有限公司 | Antenna detection device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106357293B (en) | 2019-03-22 |
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