CN205792564U - A kind of radio circuit of the double device of compatibility - Google Patents
A kind of radio circuit of the double device of compatibility Download PDFInfo
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- CN205792564U CN205792564U CN201620492943.5U CN201620492943U CN205792564U CN 205792564 U CN205792564 U CN 205792564U CN 201620492943 U CN201620492943 U CN 201620492943U CN 205792564 U CN205792564 U CN 205792564U
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Abstract
The utility model discloses the radio circuit of the double device of a kind of compatibility, including switch module, transceiver, SAW filter or duplexer, and compatible link block；Compatible link block includes that n group combines foot, and n is equal to 1 or 2；Often group combination foot includes middle pin foot, the first limit pin foot being arranged on middle pin foot both sides and the second limit pin foot；Middle pin foot electrically connects with switch module or transceiver；When accessing duplexer, the first limit pin foot electrically connects with duplexer, middle pin foot and the first limit pin foot electrical connection；Or, when accessing SAW filter, the second limit pin foot electrically connects with SAW filter, middle pin foot and the second limit pin foot electrical connection.Can select to access duplexer or SAW filter according to the frequency range demand of zones of different, can the cost-effective and problem of not worrying device resource.
Description
Technical field
This utility model relates to electronic technology field, particularly to the radio circuit of the double device of a kind of compatibility.
Background technology
Along with mobile phone enters the 4G epoch, communication network pattern is across 2G, 3G, 4G tri-kinds.And the demodulation mode of these several communication network patterns is different causes the radio-frequency devices used the most different, main difference path in receiving path is all from transceiver (Transceiver) to switch module (TX module), and mid portion is slightly different.
As it is shown in figure 1, in existing radio circuit, 2G receives the middle of (RX) path and uses SAW filter (SAW).By connecting with the resistance of 0 ohm between pin foot 1 and pin foot 2, couple together with the resistance of 0 ohm between pin foot 3 and pin foot 4 and just can form whole piece path, thus normally work.
As in figure 2 it is shown, 3G, 4G receive in (RX) path, the WCDMA(Wideband Code Division of 3G
Multiple Access, the network formats of a kind of 3G) and the LTE(of FDD-LTE(application FDD (FDD) formula of 4G based on OFDMA technology)) in the middle of use duplexer；In like manner, will connect with the resistance of 0 ohm between pin foot 1 and pin foot 2, just can form whole piece path with the resistance connection of 0 ohm between pin foot 3 and pin foot 4, thus normally work.
If some WCDMA, FDD-LTE are identical with GSM frequency range, currently used duplexer is it is ensured that 2G, 3G, 4G can normally use.And with a machine when selling country variant, it may appear that some country does not support 3G, 4G frequency range, and now duplexer cannot be fully utilized, resource excess occurs, the problem that cost increases.Also have the design of a kind of SAW filter and duplexer pad altogether, but owing to the profit of SAW own is less, producer is for little with the SAW research and development of duplexer pad altogether and Productive statistics, and resource is at full stretch.
It is therefore desirable to prior art is improved.
Utility model content
In place of above-mentioned the deficiencies in the prior art, the purpose of this utility model is to provide the radio circuit of the double device of a kind of compatibility, to solve the problem that existing radio circuit is not supported to cause duplexer use waste and the common pad of duplexer to cause SAW resource scarcity because of communication network pattern.
In order to achieve the above object, this utility model takes techniques below scheme:
The radio circuit of the double device of a kind of compatibility, wherein, double devices are SAW filter and duplexer, and described radio circuit includes: switch module, transceiver, SAW filter or duplexer, and compatible link block；
Described compatible link block includes that n group combines foot, and n is equal to 1 or 2；Often group combination foot includes middle pin foot, the first limit pin foot being arranged on middle pin foot both sides and the second limit pin foot；Described middle pin foot electrically connects with switch module or transceiver；
When accessing duplexer, the first limit pin foot electrically connects with duplexer, and middle pin foot and the first limit pin foot electrical connection, the second limit pin foot is unsettled；
Or, when accessing SAW filter, the second limit pin foot electrically connects with SAW filter, and middle pin foot and the second limit pin foot electrical connection, the first limit pin foot is unsettled.
In the radio circuit of described compatible double devices, described first limit pin foot is placed in the top of middle pin foot, and the second limit pin foot is placed in the left side or the right of middle pin foot.
In the radio circuit of described compatible double devices, described first limit pin foot, middle pin foot, the area equation of the second limit pin foot.
In the radio circuit of described compatible double devices, distance and the distance of middle pin foot and the second limit pin foot between described middle pin foot and the first limit pin foot are equal.
In the radio circuit of described compatible double devices, described n is equal to 2, and described compatible link block includes first group of combination foot and second group of combination foot；The middle pin foot of first group of combination foot electrically connects with switch module, and the middle pin foot of second group of combination foot electrically connects with transceiver；
When accessing duplexer, the first limit pin foot of first group of combination foot connects one end of duplexer, resistance also by 0 Ω connects the middle pin foot of first group of combination foot；First limit pin foot of second group of combination foot connects the other end of duplexer, connects the middle pin foot of second group of combination foot also by the resistance of 0 Ω；Second limit pin foot of first group of combination foot is unsettled, and the second limit pin foot of second group of combination foot is unsettled；
Or, when accessing SAW filter, the second limit pin foot of first group of combination foot connects one end of SAW filter, resistance also by 0 Ω connects the middle pin foot of first group of combination foot；Second limit pin foot of second group of combination foot connects the other end of SAW filter, connects the middle pin foot of second group of combination foot also by the resistance of 0 Ω；First limit pin foot of first group of combination foot is unsettled, and the first limit pin foot of second group of combination foot is unsettled.
In the radio circuit of described compatible double devices, described compatible link block also includes the first electric capacity, the first inductance, the second inductance and the 3rd inductance；One end of described first electric capacity connects middle pin foot and switch module, the other end ground connection of the first electric capacity of first group of combination foot；One end of 3rd inductance connects the middle pin foot of second group of combination foot, also by the first inductance ground connection；The other end of the 3rd inductance connects transceiver, also by the second inductance ground connection.
Compared to prior art, the radio circuit of the double device of a kind of compatibility that this utility model provides, double devices are SAW filter and duplexer, and described radio circuit includes: switch module, transceiver, SAW filter or duplexer, and compatible link block；Described compatible link block includes that n group combines foot, and n is equal to 1 or 2；Often group combination foot includes middle pin foot, the first limit pin foot being arranged on middle pin foot both sides and the second limit pin foot；Described middle pin foot electrically connects with switch module or transceiver；When accessing duplexer, the first limit pin foot electrically connects with duplexer, and middle pin foot and the first limit pin foot electrical connection, the second limit pin foot is unsettled；Or, when accessing SAW filter, the second limit pin foot electrically connects with SAW filter, and middle pin foot and the second limit pin foot electrical connection, the first limit pin foot is unsettled.Confirm it is to access duplexer or SAW filter when producing by the frequency range demand of corresponding zones of different, it is connected needing the device being suitable for the corresponding sides pin foot in combination foot, being connected with middle pin foot by corresponding edge pin foot, the limit pin foot being not connected with keeps unsettled again；So cost and resource all can be maximally utilized.
Accompanying drawing explanation
Fig. 1 is the radio circuit schematic diagram under existing 2G communication network pattern.
Fig. 2 is the radio circuit schematic diagram under existing 3G or 4G communication network pattern.
The schematic diagram of the radio circuit of compatible double devices that Fig. 3 provides for this utility model embodiment.
The schematic diagram of radio circuit one embodiment of compatible double devices that Fig. 4 provides for this utility model embodiment.
The schematic diagram of another embodiment of radio circuit of compatible double devices that Fig. 5 provides for this utility model embodiment.
The circuit diagram of the radio circuit of compatible double devices that Fig. 6 provides for this utility model embodiment.
The radio circuit of compatible double devices that Fig. 7 provides for this utility model embodiment arranges the schematic diagram of an embodiment of one group of combination foot.
The radio circuit of compatible double devices that Fig. 8 provides for this utility model embodiment arranges the schematic diagram of another embodiment of one group of combination foot.
Detailed description of the invention
This utility model provides the radio circuit of the double device of a kind of compatibility.For making the purpose of this utility model, technical scheme and effect clearer, clear and definite, this utility model is further described by the embodiment that develops simultaneously referring to the drawings.Should be appreciated that specific embodiment described herein, only in order to explain this utility model, is not used to limit this utility model.
Seeing also Fig. 3 and Fig. 4, this utility model provides the radio circuit of the double device of a kind of compatibility, and double devices are SAW filter 30 and duplexer 40.Described radio circuit includes switch module 10, transceiver 20, SAW filter 30 or duplexer 40, and compatible link block；Described compatible link block includes that n group combines foot, and n is equal to 1 or 2；Often group combination foot includes middle pin foot, the first limit pin foot being arranged on middle pin foot both sides and the second limit pin foot.As it is shown on figure 3, the first limit pin foot is placed in the top of middle pin foot, the second limit pin foot is placed in the left side or the right of middle pin foot；Middle pin foot electrically connects with switch module 10 or transceiver 20.
Wherein, the first limit pin foot, middle pin foot, the area equation of the second limit pin foot.Distance and the distance of middle pin foot and the second limit pin foot between middle pin foot and the first limit pin foot are equal.
It is to be appreciated that on circuit boards, middle pin foot necessarily electrically connects switch module 10 or transceiver 20.First limit pin foot and the second limit pin foot are unsettled at first.The communication network pattern being suitable for as required before dispatching from the factory, selects to access SAW filter 30 or duplexer 40.In other words, SAW filter 30 or duplexer 40 just connect with corresponding limit pin foot when needs use, it is not necessary to use then corresponding limit pin foot unsettled (being not connected to other devices).
When selecting duplexer, the first limit pin foot electrically connects with duplexer, and middle pin foot and the first limit pin foot electrical connection, the second limit pin foot is unsettled.When selecting SAW filter, the second limit pin foot electrically connects with SAW filter, and middle pin foot and the second limit pin foot electrical connection, the first limit pin foot is unsettled.If using wire to connect between pin foot have impedance, in order to avoid impedance disturbances, in the specific implementation, it is attached by the resistance of 0 Ω between pin foot.So ensure input (i.e. switch module 10, also TX module it is) receive signal and input to SAW/ duplexer, signal is spread out of transceiver 20(Transceiver by outfan after i.e. filtering) unification can be intersected, middle duplexer and SAW Ge Zou mono-tunnel, duplexer or SAW when then determining to produce according to band information used by each area.
It will be appreciated that, switch module and the connection of corresponding middle pin foot, duplexer and the connection of corresponding edge pin foot, SAW and the connection of corresponding edge pin foot, transceiver is prior art with the connection of corresponding middle pin foot, i.e. pin foot concrete connecting valve module, transceiver, SAW, which foot of duplexer are prior art, are not described further.
Owing to being no matter the receiving path of 2G or 3G, 4G, being all to arrange a device between transceiver (Transceiver) and switch module (TX module), this device can be SAW or duplexer.Waste and the problem of the SAW resource scarcity of duplexer pad altogether is used for existing duplexer, the present embodiment considers reserved SAW(i.e. SAW filter 30 when designing radio circuit) and the patch location of duplexer, confirm it is to use duplexer or SAW when producing by the frequency range demand of corresponding zones of different, it is connected needing the device being suitable for the corresponding sides pin foot in combination foot, being connected with middle pin foot by corresponding edge pin foot, the limit pin foot being not connected with keeps unsettled again.If welding mistake or device failure, also can disconnect original limit pin foot and connect, connect other limit pin foot form new path from new, facilitate user to change, do not have duplexer can not fully utilized resource excess, the problem that cost increases.And reserve the patch location of SAW, pad need not have been shared with duplexer, solved and the duplexer problem that pad causes SAW resource scarcity altogether.Thus cost and resource are all maximally utilized.
As a example by n is equal to 2, then compatible link block includes first group of combination foot 51 and second group of combination foot 52.The middle pin foot 1 of first group of combination foot 51 electrically connects with switch module 10, and the middle pin foot 4 of second group of combination foot 52 electrically connects with transceiver.
As shown in Figure 4, when selecting to access duplexer 40, the first limit pin foot 2 of first group of combination foot 51 connects one end of duplexer 40, connects the middle pin foot 1 of first group of combination foot 51 also by the resistance of 0 Ω；First limit pin foot 5 of second group of combination foot 52 connects the other end of duplexer 40, connects the middle pin foot 4 of second group of combination foot 52 also by the resistance of 0 Ω.Second limit pin foot 3 of first group of combination foot 51 is unsettled, and the second limit pin foot 6 of second group of combination foot 52 is unsettled, and SAW sky pastes.
As it is shown in figure 5, when selecting to access SAW filter 30, the second limit pin foot 3 of first group of combination foot 51 connects one end of SAW filter 30, connects the middle pin foot 1 of first group of combination foot 51 also by the resistance of 0 Ω；Second limit pin foot 6 of second group of combination foot 52 connects the other end of SAW filter 30, connects the middle pin foot 4 of second group of combination foot 52 also by the resistance of 0 Ω.First limit pin foot 2 of first group of combination foot 51 is unsettled, and the first limit pin foot 5 of second group of combination foot 52 is unsettled, and duplexer sky pastes.
So performance of the fully utilized various different components of energy, and individually SAW resource is more more rich than with the SAW resource of duplexer pad altogether, does not haves situation about purchasing less than material.
Seeing also Fig. 6, in the specific implementation, described compatible link block also includes the first electric capacity C1, the first inductance L1, the second inductance L2 and the 3rd inductance L3；One end of described first electric capacity C1 connects middle pin foot 1 and switch module 10, the other end ground connection of the first electric capacity C1 of first group of combination foot 51.One end of 3rd inductance L3 connects the middle pin foot 4 of second group of combination foot 52, also by the first inductance L1 ground connection.The other end of the 3rd inductance L3 connects transceiver 20, also by the second inductance L2 ground connection.Described first electric capacity C1 is for being filtered input；First inductance L1, the second inductance L2 and the 3rd inductance L3 composition filtering match circuit, for being filtered the output of SAW or duplexer.
In further embodiment, in order to save space, n can also be equal to 1, then compatible link block only includes one group of combination foot.In the case of the pin abundance of switch module or transceiver, it is also possible to differentiate switch module compatibility as shown in Figure 7, the connected mode of transceiver separation, and the connected mode that switch module as shown in Figure 8 separates, transceiver is compatible.Compatibility i.e. selects to connect SAW or duplexer by combination foot, is connected by 0 Ω by corresponding pin foot during connection.Separate i.e. corresponding pin with switch module or transceiver to be directly connected to.
It is to be appreciated that in the radio circuit of compatible double devices of the present embodiment offer, double devices are except referring to SAW and duplexer, it is also possible to refer both to duplexer.Connected mode shown in Fig. 7 and Fig. 8 can be applicable to the compatibility of duplexer and duplexer.Compatibility between duplexer and duplexer is inadequate often caused by the PIN of switch module and transceiver, needs 2 to share a PIN.Although it is identical that this compatibility need not frequency range, but due to switch module and the restriction of transceiver, two compatible frequency ranges must be all low frequency, intermediate frequency or high frequency.The compatibility of two duplexers, as long as replacing to another duplexer by the SAW filter in Fig. 7 and Fig. 8.
In sum, the radio circuit of compatible double devices that this utility model provides, carry out selecting to connect by arranging 3 pin feet, compared with prior art, be not compatible above device itself, but accomplished compatibility from circuit aspect.Thus can cost-effective while do not worry the problem of device resource.
It is understandable that; for those of ordinary skills; in addition equivalent or change can be conceived according to the technical solution of the utility model and utility model thereof, and all these change or replace and all should belong to the scope of the claims appended by this utility model.
Claims (6)
1. the radio circuit of the double device of compatibility, it is characterised in that double devices are SAW filter and duplexer, and described radio circuit includes: switch module, transceiver, SAW filter or duplexer, and compatible link block；
Described compatible link block includes that n group combines foot, and n is equal to 1 or 2；Often group combination foot includes middle pin foot, the first limit pin foot being arranged on middle pin foot both sides and the second limit pin foot；Described middle pin foot electrically connects with switch module or transceiver；
When accessing duplexer, the first limit pin foot electrically connects with duplexer, and middle pin foot and the first limit pin foot electrical connection, the second limit pin foot is unsettled；
Or, when accessing SAW filter, the second limit pin foot electrically connects with SAW filter, and middle pin foot and the second limit pin foot electrical connection, the first limit pin foot is unsettled.
The radio circuit of the double device of compatibility the most according to claim 1, it is characterised in that described first limit pin foot is placed in the top of middle pin foot, the second limit pin foot is placed in the left side or the right of middle pin foot.
The radio circuit of the double device of compatibility the most according to claim 2, it is characterised in that described first limit pin foot, middle pin foot, the area equation of the second limit pin foot.
The radio circuit of the double device of compatibility the most according to claim 3, it is characterised in that distance and the distance of middle pin foot and the second limit pin foot between described middle pin foot and the first limit pin foot are equal.
The radio circuit of the double device of compatibility the most according to claim 3, it is characterised in that described n is equal to 2, described compatible link block includes first group of combination foot and second group of combination foot；The middle pin foot of first group of combination foot electrically connects with switch module, and the middle pin foot of second group of combination foot electrically connects with transceiver；
When accessing duplexer, the first limit pin foot of first group of combination foot connects one end of duplexer, resistance also by 0 Ω connects the middle pin foot of first group of combination foot；First limit pin foot of second group of combination foot connects the other end of duplexer, connects the middle pin foot of second group of combination foot also by the resistance of 0 Ω；Second limit pin foot of first group of combination foot is unsettled, and the second limit pin foot of second group of combination foot is unsettled；
Or, when accessing SAW filter, the second limit pin foot of first group of combination foot connects one end of SAW filter, resistance also by 0 Ω connects the middle pin foot of first group of combination foot；Second limit pin foot of second group of combination foot connects the other end of SAW filter, connects the middle pin foot of second group of combination foot also by the resistance of 0 Ω；First limit pin foot of first group of combination foot is unsettled, and the first limit pin foot of second group of combination foot is unsettled.
The radio circuit of the double device of compatibility the most according to claim 5, it is characterised in that described compatible link block also includes the first electric capacity, the first inductance, the second inductance and the 3rd inductance；One end of described first electric capacity connects middle pin foot and switch module, the other end ground connection of the first electric capacity of first group of combination foot；One end of 3rd inductance connects the middle pin foot of second group of combination foot, also by the first inductance ground connection；The other end of the 3rd inductance connects transceiver, also by the second inductance ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620492943.5U CN205792564U (en) | 2016-05-27 | 2016-05-27 | A kind of radio circuit of the double device of compatibility |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620492943.5U CN205792564U (en) | 2016-05-27 | 2016-05-27 | A kind of radio circuit of the double device of compatibility |
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| CN205792564U true CN205792564U (en) | 2016-12-07 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395215A (en) * | 2017-05-23 | 2017-11-24 | 捷开通讯(深圳)有限公司 | A kind of frequency compatible device |
| CN107508616A (en) * | 2017-08-23 | 2017-12-22 | 四川九州电子科技股份有限公司 | A kind of circuit of a variety of Wi Fi antenna links scenarios of compatibility |
-
2016
- 2016-05-27 CN CN201620492943.5U patent/CN205792564U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107395215A (en) * | 2017-05-23 | 2017-11-24 | 捷开通讯(深圳)有限公司 | A kind of frequency compatible device |
| CN107508616A (en) * | 2017-08-23 | 2017-12-22 | 四川九州电子科技股份有限公司 | A kind of circuit of a variety of Wi Fi antenna links scenarios of compatibility |
| CN107508616B (en) * | 2017-08-23 | 2019-09-13 | 四川九州电子科技股份有限公司 | A kind of circuit being compatible with a variety of Wi-Fi antenna links scenarios |
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Effective date of registration: 20181127 Address after: 644000 West Section of Gangyuan Avenue, Lingang Economic and Technological Development Zone, Yibin City, Sichuan Province Patentee after: Yibin Mingtai Technology Co., Ltd. Address before: 518000 17th Floor, Block A, Financial Science and Technology Building, 11 Keyuan Road, Yuehai Street, Nanshan District, Shenzhen City, Guangdong Province Patentee before: Shenzhen Prize Technology Co., Ltd. |
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