CN201467113U - 900 MHz wireless radio-frequency transceiver - Google Patents
900 MHz wireless radio-frequency transceiver Download PDFInfo
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- CN201467113U CN201467113U CN2009200443818U CN200920044381U CN201467113U CN 201467113 U CN201467113 U CN 201467113U CN 2009200443818 U CN2009200443818 U CN 2009200443818U CN 200920044381 U CN200920044381 U CN 200920044381U CN 201467113 U CN201467113 U CN 201467113U
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Abstract
The utility model discloses a 900MHz wireless radio-frequency transceiver, which comprises a 900MHz wireless transmit-receive chip and a 900MHz transmit-receive switch, a 900MHz filter, an SPI interface and a system power supply circuit connected with the chip; and the 900MHz transmit-receive switch is also connected with a 900MHz filter. The utility model adopts the modulation modes of OOK, FSK or GFSK to realize 153.6 Kbps data transmission and utilizes the SPI interface and a master control chip to carry out data interaction operation; the lead out design of an antenna can satisfy installation requirements for different antennas; and the signals can be led out through arranging microstrip lines on a main board, or the antenna can be directly welded on a designed antenna bonding pad, and an antenna test seat can be adopted for connection through a radio-frequency cable.
Description
Technical field
The utility model designs a kind of radio transceiver device, and is particularly a kind of based on OOK, the 900MHz radio transceiver device of the ANTENN AUDIO of FSK or GFSK modulation system and transfer of data.
Background technology
The transmission technology of traditional analog signal, laser propagation effect is poor, closely particularly transmission is unstable for distance.900MHz ISM (Industry Science Medicine) is the radio band of whole world public use.Practical application on this frequency range also is very abundant.The transmission means of 900MHz comprises the mode of analogue transmission and Digital Transmission.The mode of Digital Transmission is compared with the mode of analogue transmission, has strong interference immunity, transmits advantages such as reliable.Therefore, the device based on the 900MHz less radio-frequency also has very big range of application.
Summary of the invention
Goal of the invention: technical problem to be solved in the utility model is at the deficiencies in the prior art, and a kind of 900MHz radio transceiver device is provided.
Technical scheme: the utility model discloses the radio transceiver device of a kind of 900MHz, comprise 900MHz radio transmitting and receiving chip and the 900MHz transmit-receive switch that is connected with described chip respectively, 900MHz filter, SPI interface and system's power supply circuits; The 900MHz transmit-receive switch also is connected with the 900MHz filter.
In the utility model, described 900MHz transmit-receive switch is connected with an antenna.
In the utility model, described system power supply circuits are the linear stabilized power supply of 3.0V.
The utility model adopts OOK, FSK or GFSK modulation technique, and the wireless transmission chip of working on the 900MHz frequency range is wherein formed by receiving link and transmitting chain, and master controller can come the state of module is provided with by SPI.The flank speed of wireless transmission can reach 153.6Kbps, can realize the communication of point-to-point and point-to-multipoint.The utility model also has the communication protocol characteristic of simple.Can satisfy the wireless audio transmission of 900MHz, and wireless data transmission.
In the utility model, 900MHz antenna, 900MH transmit-receive switch and 900MHz radio transmitting and receiving chip are formed the reception link; 900MHz radio transmitting and receiving chip, 900MHz filter, 900MHz transmit-receive switch and 900MHz antenna are formed transmitting chain.
External interface is received and emissioning controling signal by the SPI interface in the utility model, and the linear stabilized power supply power supply provides and reception and emission state signal composition.
The utility model adopts the installation form of paster welding, can satisfy the application to highly conditional occasion.
The utility model adopts multiple mode to realize in the connection of antenna, can satisfy the demand of different applications.
Beneficial effect: the utility model adopts OOK, and the modulation system of FSK or GFSK realizes the transfer of data of 153.6Kbps.Carry out the data interaction operation by SPI interface and master control chip.Simultaneously can satisfy different antenna installation requirements in the design: walk microstrip line on can be by mainboard and draw signal drawing of antenna, can also directly be welded on antenna on the antenna bond pad that has designed, also can come ways of connecting with radio frequency cable by the antenna measurement seat.Adopt the form of paster welding simultaneously, can be used as a device form and carry out the paster installation, can enhance productivity like this and product reliability.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is done further to specify, above-mentioned and/or otherwise advantage of the present utility model will become apparent.
Fig. 1 is the structural representation of the utility model 900MHz radio transceiver device.
Fig. 2 is that the paster of the utility model 900MHz radio transceiver device is installed and the antenna scheme of installation.
Embodiment:
As shown in Figure 1, the utility model discloses the radio transceiver device of a kind of 900MHz, comprise 900MHz radio transmitting and receiving chip 3 and the 900MHz transmit-receive switch 1 that is connected with described chip respectively, 900MHz filter 2, SPI interface 5 and system's power supply circuits 4; 900MHz transmit-receive switch 1 also is connected with 900MHz filter 2.Described 900MHz transmit-receive switch 1 is connected with an antenna 8.Described system power supply circuits 4 are the linear stabilized power supply of 3.0V.
Particularly, during the utility model work, be divided into a transmitting chain and a reception link, wherein transmitting chain is a transmitting terminal, and the reception link is a receiving terminal.Transmitting terminal carries out OOK to the data that obtain from the master control chip, FSK or the modulation of GFSK form, be converted to 900MHz by 900MHz radio transmitting and receiving chip 3 inner integrated frequency changer circuits, arrive 900MHz transmit-receive switch 1 by 900MHz filter 2 then, outwards launch by 900MHz antenna 8 at last.Receiving terminal receives the wireless signal of 900MHz from the space, pass through 900MHz transmit-receive switch 1 and be input to 900MHz radio transmitting and receiving chip 3, demodulator circuit by 900MHz radio transmitting and receiving chip 3 inside obtains data then, at last data is transferred to the master control chip by SPI interface 5.The selection of emission state and accepting state and setting realize by the register in the transceiving chip.
As shown in Figure 2, the paster of the utility model 900MHz radio transceiver device is installed and the antenna scheme of installation.Paster installation and design of the present utility model can reduce the thickness of module, and convenient simultaneously the installation is if adopt the form of paster to produce the efficient that can also improve production.The form that antenna of the present utility model is installed is very flexibly, can adopt the radio frequency microstrip line to draw from mainboard, also can adopt the antenna that designs is welded on the antenna bond pad 6 that has designed, and can also draw by the antenna measurement seat 7 on the module.
Operation principle of the present utility model is:
1.900MHz radio transmitting and receiving chip is a core of the present utility model, and transmitting terminal and receiving terminal are selected and controlled.
2. transmitting terminal is operated on the 900MHz frequency; The data of being responsible for master controller is sent are by OOK, and FSK or GFSK modulation are amplified the back and sent by the wireless signal of antenna with 900MHz.
3. receiving terminal is operated on the 900MHz frequency; Be responsible for the signal that receives from the space is sent to transceiving chip, give the master control chip transfer of data after the transceiving chip demodulation.
4. the setting that transmits and receives State Selection and operating state of the present utility model all is to realize by the related register that transceiving chip is set.
5. system of the present utility model power supply circuits 4 adopt the linear stabilized power supply of a 3.0V to realize.
In described the utility model circuit, the transmitting terminal circuit by 900MHz radio transmitting and receiving chip 3 adopt be CC1020, the 900MHz filter 2 of CHIPCON adopt what be that LF1005, the 900MHz transmit-receive switch 1 of ACX adopt is that HW408 and the 900MHz antenna of HEXAWAVE formed.Receiving terminal circuit by 900MHz antenna, 900MHz transmit-receive switch 1 adopt what be that the HW408 of HEXAWAVE and 900MHz radio transmitting and receiving chip 3 adopt is that the CC1020 of CHIPCON forms.
It is a kind of based on 900MHz radio transceiver device that the utility model provides, the form that this module adopts paster to install, transmission rate can reach 153.6Kbps, can use in ANTENN AUDIO and wireless data transmission. and the utility model can be realized the radio communication of point-to-point and point-to-multipoint. and the wireless transmission distance of open field is greater than 600M.
The utility model provides the thinking and the method for the radio transceiver device of a kind of 900MHz; the method and the approach of this technical scheme of specific implementation are a lot; the above only is a preferred implementation of the present utility model; should be understood that; for those skilled in the art; under the prerequisite that does not break away from the utility model principle, can also make some improvements and modifications, these improvements and modifications also should be considered as protection range of the present utility model.The all available prior art of each component part not clear and definite in the present embodiment is realized.
Claims (3)
1. the radio transceiver device of a 900MHz, it is characterized in that the 900MHz transmit-receive switch (1) that comprises 900MHz radio transmitting and receiving chip (3) and be connected with described chip respectively, 900MHz filter (2), SPI interface (5) and system's power supply circuits (4); 900MHz transmit-receive switch (1) also is connected with 900MHz filter (2).
2. the radio transceiver device of 900MHz according to claim 1 is characterized in that, described 900MHz transmit-receive switch (1) is connected with an antenna (8).
3. the radio transceiver device of 900MHz according to claim 1 and 2 is characterized in that, described system power supply circuits (4) are the linear stabilized power supply of 3.0V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200443818U CN201467113U (en) | 2009-06-04 | 2009-06-04 | 900 MHz wireless radio-frequency transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009200443818U CN201467113U (en) | 2009-06-04 | 2009-06-04 | 900 MHz wireless radio-frequency transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201467113U true CN201467113U (en) | 2010-05-12 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009200443818U Expired - Fee Related CN201467113U (en) | 2009-06-04 | 2009-06-04 | 900 MHz wireless radio-frequency transceiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201467113U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102147954A (en) * | 2011-03-22 | 2011-08-10 | 苏州水天堂软件科技有限公司 | Intelligent anti-theft monitoring system for electric bicycle and control method of intelligent anti-theft monitoring system |
| CN102209005A (en) * | 2010-06-25 | 2011-10-05 | 无锡中科龙泽信息科技有限公司 | Testing device and method for MicroSD wireless local area network card |
-
2009
- 2009-06-04 CN CN2009200443818U patent/CN201467113U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102209005A (en) * | 2010-06-25 | 2011-10-05 | 无锡中科龙泽信息科技有限公司 | Testing device and method for MicroSD wireless local area network card |
| CN102147954A (en) * | 2011-03-22 | 2011-08-10 | 苏州水天堂软件科技有限公司 | Intelligent anti-theft monitoring system for electric bicycle and control method of intelligent anti-theft monitoring system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100512 Termination date: 20110604 |