CN201699786U - TD-SCDMA and GSM dual-mode wireless communication module - Google Patents
TD-SCDMA and GSM dual-mode wireless communication module Download PDFInfo
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- CN201699786U CN201699786U CN2010201265492U CN201020126549U CN201699786U CN 201699786 U CN201699786 U CN 201699786U CN 2010201265492 U CN2010201265492 U CN 2010201265492U CN 201020126549 U CN201020126549 U CN 201020126549U CN 201699786 U CN201699786 U CN 201699786U
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Abstract
The utility model discloses a TD-SCDMA and GSM dual-mode wireless communication module, which comprises a base band primary CPU chip and a connected radio circuit, a shielding cover and an external interface. The radio circuit comprises a TD-SCDMA radio circuit, a GSM radio circuit, a radio transceiver and an antenna switch. The utility model realizes the radio transceiving and frequency range choosing by using the base band primary CPU chip to control the radio transceiver and the antenna switch, so as to perform the double-module communication function. All the functional components are integrated on a PCB and are packaged in a modularization mode so as to be used for communication by connecting an electric pin from the external interface. Based on the design of SC8800S chip, compared with the prior art, the utility model is characterized by powerful function and low cost.
Description
Affiliated technical field
The utility model relates to a kind of TD-SCDMA and GSM dual-mode wireless communication module.
Background technology
In January, 2009, the Ministry of Industry and Information Technology of the People's Republic of China (PRC) is that China Mobile, China Telecom and CHINAUNICOM provide 3 3G (Third Generation) Moblies (3G) licence plate, and this measure indicates that China formally enters the 3G epoch.
But because the TD-SCDMA early stage of development, the network coverage is also incomplete, and gsm wireless communication network technology maturation, network stabilization, therefore coverage rate is the widest at present, and the user is maximum, so if the 2G network of building well is all destroyed, rebuliding 3G network, is a very big waste to operator.Therefore, in long time in future, the situation that China second generation and 3G (Third Generation) Moblie pattern will occur and deposit.
Along with the continuous development of mobile communication technology, under the market competitive pressure intensely, the cycle of communication device class model change greatly reduces, and research and develop this series products, often the construction cycle long, the cost input is bigger, this has increased the input risk of enterprise virtually.This just needs a product of design can shorten the R﹠D cycle, strengthen its vitality.So TD-SCDMA and GSM dual-mode wireless communication module, the required most function of mobile phone and Wireless Telecom Equipment that it is integrated, can pass through interface external audio frequency device, display device, the first-class equipment of shooting, again through suitably assembling and software are supporting, can finish the research and development design process of new product, as long as the secondary development of product is to module, can shorten the construction cycle like this, stable performance, risk also reduces, and easy to maintenance.Therefore, modular design will obtain application more and more widely.
Existing wireless communication module, a kind of design is in integrated various devices, also need on pcb board, design Connection Block, this Connection Block is connected communication as external interface with corresponding external circuit link slot, this mode has increased the Connection Block device cost on the one hand, also must increase the area and the module Costco Wholesale of pcb board simultaneously; Also have a kind of wireless communication module, it is less relatively that the volume of this module can be done, but can only realize TD-SCDMA or the network service of GSM monotype, and therefore, all there is certain defective in the existing wireless communications module.
The utility model content
The utility model provides a kind of TD-SCDMA and GSM dual-mode wireless communication module, and it has overcome background technology TD-SCDMA and the existing cost height of GSM dual-mode wireless communication module, has safeguarded the deficiency inconvenient, that function is low.
The technical scheme that its technical problem that solves the utility model adopts is:
A kind of TD-SCDMA and GSM dual-mode wireless communication module, it comprises radio circuit, screening cover and the external interface of base band host CPU chip and connection; Wherein base band host CPU chip also is connected with memory, crystal oscillator, electric power management circuit and other auxiliary circuit, it is characterized in that radio circuit comprises TD-SCDMA radio circuit and GSM radio circuit, external interface is that double-deck pad connection edges of boards are electroplated half hole, and described each device is integrated on the pcb board through the modularization encapsulation, is drawn by external interface to pick out electrical pins and the external circuit interface communicates.
In one preferred embodiment, described radio circuit comprise the TD-SCDMA power amplification chip that the signal that is used for TD-SCDMA frequency range that radio circuit is received amplifies and be connected be used to prevent the aerial signal adverse current, firm power amplifies the TD-SCDMA isolator chip of output; The GSM power amplification chip that is used for the GSM signal that radio circuit receives is amplified, be used to receive and the unwanted TD-SCDMA frequency band of filtering in signal TD-SCDMA receiving filter chip and be used to receive and the unwanted GSM frequency band of filtering in the GSM receiving filter chip of signal.
In one preferred embodiment, described radio circuit also comprises with TD-SCDMA radio circuit and interconnective radio-frequency (RF) transceiver of GSM radio circuit and duplexer, and its radio circuit is realized radio-frequency receiving-transmitting and Frequency Band Selection by base band host CPU chip controls by radio-frequency (RF) transceiver and duplexer.
In one preferred embodiment, described duplexer is the duplexer of while compatible TD-SCDMA and GSM bimodulus.
In one preferred embodiment, described radio-frequency receiving-transmitting is to carry out transfer of data by antenna with the radio wave form.
In one preferred embodiment, described TD-SCDMA and GSM can automatically switch or switch by manual selection is set.
In one preferred embodiment, described base band host CPU chip is SC8800S.
The technical program is compared with background technology: because SC8800S is the integrated baseband chip of a height, can in single-chip, realize the TD-SCDMA/GSM dual mode capability, therefore it has overcome the existing deficiency of background technology, and has following advantage: 1, production cost is low, powerful; 2, be fit to various wireless communication Products Development and application, easy to use as dual-mode handset, dual-mode terminal, wireless data transmission etc., can shorten the construction cycle; 3, can manually select the TD-SCDMA/GSM network according to the automatic selection of environment or user's needs, have more practicality.
Description of drawings
Below in conjunction with drawings and Examples the utility model is further specified.
Fig. 1 is the structured flowchart of TD-SCDMA/GSM dual-mode wireless communication module.
Fig. 2 is a finished product schematic diagram after the TD-SCDMA/GSM dual-mode wireless communication module package.
Fig. 3 is the application principle figure of TD-SCDMA/GSM dual-mode wireless communication module and SIM card.
Fig. 4 is the application principle figure of TD-SCDMA/GSM dual-mode wireless communication module and loud speaker.
Embodiment
Please refer to Fig. 1, a kind of structured flowchart of TD-SCDMA/GSM dual-mode wireless communication module.
A kind of TD-SCDMA and GSM dual-mode wireless communication module that is applied to wireless communication terminal, it comprises base band host CPU chip, radio circuit, screening cover and external interface; Wherein base band host CPU chip is connected with memory (MEMORY), crystal oscillator, base band power circuit, DC-DC core power supply circuits and other auxiliary circuit, it is characterized in that radio circuit comprises TD-SCDMA radio circuit and GSM radio circuit, be connected with radio-frequency (RF) transceiver and duplexer on the described radio circuit, by radio-frequency (RF) transceiver and duplexer control radio-frequency receiving-transmitting and Frequency Band Selection.External interface is to connect the edges of boards electroplating hole by two-layer pad to draw electrical pins, based on the popular needs of market product function now, can draw the interface of plurality of classes, and module-external interface and external circuit interface adopt welding manner to carry out data communication.
Radio circuit comprise the TD-SCDMA power amplification chip that the signal that is used for TD-SCDMA frequency range that radio circuit is received amplifies and be connected be used to prevent the aerial signal adverse current, firm power amplifies the TD-SCDMA isolator chip of output; The GSM power amplification chip that is used for the GSM signal that radio circuit receives is amplified, be used to receive and the unwanted TD-SCDMA frequency band of filtering in signal TD-SCDMA receiving filter chip and be used to receive and the unwanted GSM frequency band of filtering in the GSM receiving filter chip of signal.
Host CPU chip SC8800S is the integrated baseband chip of a height, and the SC8800S cost is cheaper, but can realize the TD-SCDMA/GSM dual mode capability in single-chip.This chip mainly is made of with the hardware accelerator of specific TD-SCDMA/GSM/GPRS 32 ARM controllers, 16 CevaX1662DSP kernel, supports up-to-date encryption standard F8 and the F9 of TD-SCDMA; The speed of the HSDPA of single carrier is to 1.4Mbps; The SC8800S peripheral interface comprises UART, SPI, I2C, I2S, PCM, PCMCIA, IrDA, Keypad, USB2.0Device interface, NANDFlash interface, Memory interface, SDIO, CE-ATA, Camera interface, LCD and TV out interface, inside is integrated multimedia, functions such as power management.Therefore based on the unique design of SC8800S scheme and external interface, various devices are integrated on the pcb board TD-SCDMA and GSM dual-mode wireless communication module through the modularization package design, its size can reach 34.1mm*57.7mm, has realized advantage powerful and that volume is less.
When needs were communicated by letter, base band host CPU chip was selected present residing network frequency range, and is utilized the circuit of this frequency range to communicate by control radio-frequency (RF) transceiver and duplexer.Radio circuit receives processing and passes to base band host CPU chip with digital signal form the analog signal that receives from antenna, perhaps digital signal is handled, and sends by antenna with analog signal.Therefore, radio-frequency receiving-transmitting all is to carry out transfer of data by antenna with the form of radio wave.The shared antenna of TD-SCDMA radio circuit and GSM radio circuit switches by the radio-frequency antenna switch.Therefore situation about covering simultaneously for location TD-SCDMA network and GSM network, system will the more excellent network of automatic selecting signal, also can need to select voluntarily to use TD-SCDMA network or GSM network schemer by the user by being provided with in man-machine interface interface or the software platform.Fig. 2 is TD-SCDMA and GSM dual-mode wireless communication module encapsulation back finished product diagram, and a plurality of lattices of marginal surface are external interface 1, screening cover 2, draw various function pins by external interface, as SIM card, keyboard, audio frequency, display etc.
The utility model is applicable to the various wireless communication product, and is as the secondary development of bimodulus products such as dual-mode handset, wireless communication terminal, wireless data transmission, very easy to use.
Describe below in conjunction with concrete application of embodiment:
According to relevant criterion, the frequency range of two kinds of patterns is decided to be approximately:
Implement one, please refer to Fig. 3: the application principle figure of TD-SCDMA and GSM dual-mode wireless communication module and SIM card.The SIM card deck is directly linked to each other with the SIM card pin of TD-SCDMA/GSM dual-mode wireless communication module, add filter capacitor, can use SIM card.
Embodiment two, please refer to Fig. 4: the application principle figure of TD-SCDMA and GSM dual-mode wireless communication module and loud speaker.8 Europe loud speakers are directly linked to each other with the loud speaker end of TD-SCDMA/GSM dual-mode wireless communication module, and cooperate corresponding filter circuit, can realize music or phonetic function, if music is had specific demand, also can extend out other audio chip, very convenient in the realization, applied range.
The above, it only is the utility model preferred embodiment, so can not limit the scope that the utility model is implemented with this, i.e. the equivalence of doing according to the utility model claim and description changes and modifies, and all should still belong in the scope that the utility model patent contains.
Claims (7)
1. TD-SCDMA and GSM dual-mode wireless communication module, it comprises radio circuit, screening cover and the external interface of base band host CPU chip and connection; Wherein base band host CPU chip also is connected with memory, crystal oscillator, electric power management circuit and other auxiliary circuit, it is characterized in that: described radio circuit comprises TD-SCDMA radio circuit and GSM radio circuit, external interface is that double-deck pad connection edges of boards are electroplated half hole, and described each function element is integrated on the pcb board through the modularization encapsulation, is drawn by external interface to pick out electrical pins and the external circuit interface communicates.
2. a kind of TD-SCDMA according to claim 1 and GSM dual-mode wireless communication module, it is characterized in that: described radio circuit also comprise the TD-SCDMA power amplification chip that the signal that is used for TD-SCDMA frequency range that radio circuit is received amplifies and be connected be used to prevent the aerial signal adverse current, firm power amplifies the TD-SCDMA isolator chip of output; The GSM power amplification chip that is used for the GSM signal that radio circuit receives is amplified, be used to receive and the unwanted TD-SCDMA frequency band of filtering in signal TD-SCDMA receiving filter chip and be used to receive and the unwanted GSM frequency band of filtering in the GSM receiving filter chip of signal.
3. a kind of TD-SCDMA according to claim 1 and GSM dual-mode wireless communication module, described radio circuit also comprises with TD-SCDMA radio circuit and interconnective radio-frequency (RF) transceiver of GSM radio circuit and duplexer, and its radio circuit is realized radio-frequency receiving-transmitting and Frequency Band Selection by base band master CUP chip controls by radio-frequency (RF) transceiver and duplexer.
4. a kind of TD-SCDMA according to claim 3 and GSM dual-mode wireless communication module is characterized in that: described duplexer is the duplexer of while compatible TD-SCDMA and GSM bimodulus.
5. a kind of TD-SCDMA according to claim 3 and GSM dual-mode wireless communication module is characterized in that: described radio-frequency receiving-transmitting is to carry out transfer of data by antenna with the radio wave form.
6. according to each described a kind of TD-SCDMA and GSM dual-mode wireless communication module among the claim 1-5, it is characterized in that: described TD-SCDMA and GSM network can switch automatically or switch by manual selection is set.
7. a kind of TD-SCDMA according to claim 1 and GSM dual-mode wireless communication module is characterized in that: described base band host CPU chip is SC8800S.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201265492U CN201699786U (en) | 2010-03-08 | 2010-03-08 | TD-SCDMA and GSM dual-mode wireless communication module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201265492U CN201699786U (en) | 2010-03-08 | 2010-03-08 | TD-SCDMA and GSM dual-mode wireless communication module |
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| CN201699786U true CN201699786U (en) | 2011-01-05 |
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| CN2010201265492U Expired - Fee Related CN201699786U (en) | 2010-03-08 | 2010-03-08 | TD-SCDMA and GSM dual-mode wireless communication module |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346816A (en) * | 2013-06-28 | 2013-10-09 | 长沙威胜信息技术有限公司 | Wireless communication system and remote updating method thereof |
| CN107018583A (en) * | 2017-05-08 | 2017-08-04 | 武汉中元通信股份有限公司 | Integrate the data transfer module of two kinds of communication systems of CDMA/LTE |
-
2010
- 2010-03-08 CN CN2010201265492U patent/CN201699786U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103346816A (en) * | 2013-06-28 | 2013-10-09 | 长沙威胜信息技术有限公司 | Wireless communication system and remote updating method thereof |
| CN107018583A (en) * | 2017-05-08 | 2017-08-04 | 武汉中元通信股份有限公司 | Integrate the data transfer module of two kinds of communication systems of CDMA/LTE |
| CN107018583B (en) * | 2017-05-08 | 2023-12-29 | 武汉中元通信股份有限公司 | Data transmission module integrating CDMA/LTE two communication systems |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: XIAMEN STELCOM COMMUNICATION + TECHNOLOGY CO., LTD Free format text: FORMER OWNER: XIAMEN STELCOM INFORMATION + TECHNOLOGY CO., LTD. Effective date: 20110602 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| COR | Change of bibliographic data |
Free format text: CORRECT: ADDRESS; FROM: 361000 STELCOM BUILDING, NO. 1, LINHOU WEST ROAD, INFORMATION AND OPTOELECTRONICS PARK, TORCH HIGH-TECH. INDUSTRIAL DEVELOPMENT ZONE, XIAMEN CITY, FUJIAN PROVINCE TO: 361000 701, STELCOM BUILDING, NO. 1, LINHOU WEST ROAD, INFORMATION AND OPTOELECTRONICS PARK, TORCH HIGH-TECH. ZONE, XIAMEN CITY, FUJIAN PROVINCE |
|
| TR01 | Transfer of patent right |
Effective date of registration: 20110602 Address after: 361000 Fujian province Xiamen torch hi tech Zone information photoelectric Garden Road No. 1 building 701 after stelcom Patentee after: Xiamen stelcom Communication Technology Co., Ltd. Address before: 361000 Fujian Province, Xiamen torch hi tech Industrial Development Zone photoelectric information after Garden Road No. 1 building stelcom Patentee before: Xiamen Stelcom Information & Technology Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110105 Termination date: 20130308 |