CN201821340U - 470M 50mW wireless transceiver - Google Patents
470M 50mW wireless transceiver Download PDFInfo
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- CN201821340U CN201821340U CN2010202733555U CN201020273355U CN201821340U CN 201821340 U CN201821340 U CN 201821340U CN 2010202733555 U CN2010202733555 U CN 2010202733555U CN 201020273355 U CN201020273355 U CN 201020273355U CN 201821340 U CN201821340 U CN 201821340U
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- wireless transceiver
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Abstract
The utility model relates to a 470M 50mW wireless transceiver which aims at solving the problems of using many modules, being complex in circuit and high in price and being hard to ensure performances in the prior art. The wireless transceiver comprises a radio frequency circuit and a lower frequency circuit, wherein the radio frequency circuit comprises a 26M crystal oscillation matching circuit, a 470M whip antenna, a CC1101E radio frequency integrated chip, a 470M frequency range Barron circuit, a 50mW power amplification circuit, a 470M frequency range receiving lowpass filtering circuit and a 470M frequency range sending lowpass filtering circuit; and the lower frequency circuit comprises a microcontroller, and a power supply, an interface and an indicator light which are connected with the microcontroller. Due to the adoption of the CC1101E radio frequency integrated chip, the wireless transceiver simplifies the whole circuit, reduces cost and power consumption, and improves transmission performance.
Description
Technical field
The utility model relates to field of wireless transmission, and in particular, the utility model is a kind of 470M 50mW wireless transceiver about Internet of Things.
Background technology
At present, the Internet of Things wireless transceiver is mainly used in the automatic centralized meter-reading system of building, is specially adapted to radio meter register occasions such as water meter, gas meter, hotlist, ammeter; Industry remote sensing, remote measurement communication; Home wireless security protection, monitoring The Cloud Terrace, power of computer room, Fan Equipment wireless remote-controlled alarm system; Active RFID tag identification; Intelligent wireless terminal, Medical Instruments such as POS system, PDA; Electronic stop plate, intelligent public transportation dispatching system; It is more and more indispensable part on modern each big civilian consumer electronics, the industry control electron-like function.
Patent Office of the People's Republic of China discloses a CN101534133A document on September 16th, 2009, name is called a kind of radio receiving-transmitting unit, and this machine comprises: digital circuit blocks, analog module, switching controls module, selector switch, transmitting-receiving modular converter and antenna; Wherein, analog module comprises emission path and multiplexing reception path; By switching controls module controls transmitting-receiving modular converter and selector switch work, when the transmitting-receiving modular converter was connected antenna with the emission path, selector switch was connected the digital pre-distortion DPD processing unit of digital circuit blocks, and multiplexing reception path is received path as feedback; When the transmitting-receiving modular converter was connected antenna and multiplexing reception path, selector switch was connected the digital signal processing unit of digital circuit blocks.Its shortcoming is to use module many, the circuit complexity, and the price height, performance is difficult to guarantee.
Summary of the invention
The utility model has solved existing in prior technology and has used module many, the circuit complexity, and the price height, the problem that performance is difficult to guarantee provides a kind of 470M 50mW wireless transceiver, and use module seldom just can reach the requirement of wireless transmission.
The technical scheme that its technical problem that solves the utility model adopts is: the utility model comprises radio circuit, low-frequency channel, and described radio circuit comprises that 26M crystal oscillator match circuit, 470M whip antenna, CC1101E radio frequency integrated chip, 470M frequency range balun circuit, 50mW power amplifier, 470M frequency range receive low-pass filter circuit, the 470M frequency range sends low-pass filter circuit; Described 26M crystal oscillator match circuit links to each other with CC1101E radio frequency integrated chip, described CC1101E radio frequency integrated chip links to each other with the end of low-frequency channel with 470M frequency range balun circuit, the other end of 470M frequency range balun circuit links to each other with the end that the 470M frequency range receives low-pass filter circuit, the other end that the 470M frequency range receives low-pass filter circuit links to each other with the 470M whip antenna, 470M frequency range balun circuit links to each other with the end that the 470M frequency range sends low-pass filter circuit by the 50mW power amplifier, and the other end that the 470M frequency range sends low-pass filter circuit links to each other with the 470M whip antenna; Described low-frequency channel comprises power supply, interface, and described power supply links to each other with interface, radio circuit.When sending data, the data that the user will need to send send to wireless transceiver with the SPI form, transceiver is loaded on the 470M frequency range after digital signal is modulated by debud modes such as 2-FSK, GFSK, OOK, MSK, by 470M eight human relations circuit and 470M low-pass filter circuit, 470M 50mW power amplifier partly waits the front end match circuit finally by spring signal to be sent with form of electromagnetic wave; When receiving data, when spring antenna receives airborne effective electromagnetic wave, to not have limited signal by front end high frequency match circuit and return integrated chip to CC11001, demodulation process through the simulation part, analog high frequency is changed into intermediate-freuqncy signal, again through by SPI the data that receive being exported after the processing of numerical portion; Described radio circuit is worked in the frequency range of 470MHz ~ 480MHz, and transmitting power is 50MW, emission current≤95mA, received current≤23mA; Sleep current≤40uA, can be for a long time under 3.0 ~ 3.6V operating voltage normal steady operation; Adopt the SPI interface with external data communication, can directly link to each other with single-chip microcomputer, software programming is very convenient.
As preferably, described interface is 2.0 single pin x9,2.0 single pin x5, and described 2.0 single pin x9,2.0 single pin x5 link to each other with CC1101E radio frequency integrated chip, and 2.0 single pin x9 also link to each other with power supply.2.0 single pin x9 is used for to wireless module power supply, output transmission, State Control; 2.0 single pin x5 is arranged on the front end of wireless transceiver, directly with systematically the linking to each other of user, further increases the ground connection performance of wireless transceiver; Pass through interface, the user can directly connect single-chip microcomputer, can be by single-chip microcomputer to multiple operations such as the reception of wireless transceiver, emission, sleep, speed, channel, communication patterns, thereby the problem when directly being connected by peripheral apparatus between two or more products of avoiding needing to communicate by letter within module efficient communication scope on the issuable line configuring improves the comprehensive competitive power of a whole set of products simultaneously.
As preferably, described power supply comprises LDO circuit, decoupling circuit, and an end of described LDO circuit links to each other with microcontroller, and the other end of LDO circuit links to each other with CC1101E radio frequency integrated chip by decoupling circuit.Select the LDO circuit that noise factor is little, quiescent dissipation is little, leakage current is low, output current is big, input and output pressure reduction is little for use, guaranteeing provides the high-quality stable power to wireless transceiver, and then avoids wireless transceiver to cause the deviation of communication frequency because of voltage fluctuation; Decoupling circuit reduces the influence of the ripple coefficient of external power source to radio circuit, increases the ground connection effect on radio-frequency module high frequency ground.
As preferably, be provided with radome at described radio circuit, radome surrounds whole radio circuit.Radio circuit, and is done good earth and is handled its comprehensive covering with radome; Reduce outside high-frequency noise greatly to the radio circuit Effect on Performance.
The beneficial effects of the utility model are: by adopting CC1101E radio frequency integrated chip, simplified entire circuit, reduced cost, reduced power consumption, dwindled overall dimension, improved transmission performance; Reliable transmission is apart from 600m-800m.
Description of drawings
Fig. 1 is that a kind of circuit of the utility model 470M 50mW wireless transceiver connects block diagram.
Among the figure: 1. 470M whip antenna, 2. the 470M frequency range low pass circuit that accepts filter, 3. 470M frequency range balun circuit, 4. CC1101E radio frequency integrated chip, 5. 2.0 single pin x5,6. 26M crystal oscillator match circuit, 7. decoupling circuit, 8.LDO circuit, 9. 2.0 single pin x9,10. 50mW power amplifier, 11. 470M frequency ranges send low-pass filter circuit.
Embodiment
Below by specific embodiment, and in conjunction with the accompanying drawings the technical solution of the utility model is described in further detail.
Embodiment:
A kind of 470M 50mW wireless transceiver of present embodiment, referring to Fig. 1, comprise radio circuit and low-frequency channel, radio circuit comprises that 26M crystal oscillator match circuit 6,470M whip antenna 1, CC1101E radio frequency integrated chip 4,470M frequency range balun circuit 3,470M frequency range receive low-pass filter circuit 2,50mW power amplifier 10,470M frequency range transmission low-pass filter circuit 11, and low-frequency channel comprises decoupling circuit 7, LDO circuit 8,2.0 single pin x9 9,2.0 single pin x5 5; CC1101E radio frequency integrated chip 4 is connected with 26M crystal oscillator match circuit 6,470M frequency range balun circuit 3, decoupling circuit 7,2.0 single pin x5 5 as the core of radio circuit, 470M frequency range balun circuit 3 receives low-pass filter circuit 2 by the 470M frequency range and links to each other with 470M whip antenna 1,470M frequency range balun circuit 3 also links to each other with an end of 50mW power amplifier 10, and the other end of 50mW power amplifier 10 sends low-pass filter circuit 11 by the 470M frequency range and links to each other with 470M whip antenna 1; Decoupling circuit 7 also links to each other with LDO circuit 8.
Radio circuit, and is done good earth and is handled its comprehensive covering with radome.
The communication data that needs are sent sends to wireless transceiver with the SPI form, and transceiver is loaded on the 470M frequency range after digital signal is modulated by debud modes such as 2-FSK, GFSK, OOK, MSK, sends with form of electromagnetic wave; After wireless transceiver receives the valid wireless signal, through the demodulation process of simulation part, pass through the processing of numerical portion again, by SPI the data that receive are exported at last; Transceiver is worked in the frequency range of 470MHz ~ 480MHz, and transmitting power is 50MW, emission current≤95mA, and received current≤23mA, sleep current≤40uA can normal for a long time steady operation under 3.0 ~ 3.6V operating voltage.
Above-described embodiment is one of preferred plan of the present utility model, is not the utility model is done any pro forma restriction, also has other variant and remodeling under the prerequisite that does not exceed the technical scheme that claim puts down in writing.
Claims (4)
1. 470M 50mW wireless transceiver, comprise radio circuit, low-frequency channel, it is characterized in that: described radio circuit comprises that 26M crystal oscillator match circuit, 470M whip antenna, CC1101E radio frequency integrated chip, 470M frequency range balun circuit, 50mW power amplifier, 470M frequency range receive low-pass filter circuit, the 470M frequency range sends low-pass filter circuit; Described 26M crystal oscillator match circuit links to each other with CC1101E radio frequency integrated chip, described CC1101E radio frequency integrated chip links to each other with the end of low-frequency channel with 470M frequency range balun circuit, the other end of 470M frequency range balun circuit links to each other with the end that the 470M frequency range receives low-pass filter circuit, the other end that the 470M frequency range receives low-pass filter circuit links to each other with the 470M whip antenna, 470M frequency range balun circuit links to each other with the end that the 470M frequency range sends low-pass filter circuit by the 50mW power amplifier, and the other end that the 470M frequency range sends low-pass filter circuit links to each other with the 470M whip antenna; Described low-frequency channel comprises power supply, interface, and described power supply links to each other with interface, radio circuit.
2. a kind of 470M 50mW wireless transceiver according to claim 1, it is characterized in that: described interface is 2.0 single pin x9,2.0 single pin x5, described 2.0 single pin x9,2.0 single pin x5 link to each other with CC1101E radio frequency integrated chip, and 2.0 single pin x9 also link to each other with power supply.
3. a kind of 470M 50mW wireless transceiver according to claim 1, it is characterized in that: described power supply comprises LDO circuit, decoupling circuit, one end of described LDO circuit links to each other with microcontroller, and the other end of LDO circuit links to each other with CC1101E radio frequency integrated chip by decoupling circuit.
4. a kind of 470M 50mW wireless transceiver according to claim 1, it is characterized in that: be provided with radome at described radio circuit, radome surrounds whole radio circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202733555U CN201821340U (en) | 2010-07-28 | 2010-07-28 | 470M 50mW wireless transceiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202733555U CN201821340U (en) | 2010-07-28 | 2010-07-28 | 470M 50mW wireless transceiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201821340U true CN201821340U (en) | 2011-05-04 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202733555U Expired - Lifetime CN201821340U (en) | 2010-07-28 | 2010-07-28 | 470M 50mW wireless transceiver |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201821340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441776A (en) * | 2013-07-26 | 2013-12-11 | 杭州隽德科技有限公司 | Wireless transceiver and logic control method thereof |
-
2010
- 2010-07-28 CN CN2010202733555U patent/CN201821340U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103441776A (en) * | 2013-07-26 | 2013-12-11 | 杭州隽德科技有限公司 | Wireless transceiver and logic control method thereof |
| CN103441776B (en) * | 2013-07-26 | 2015-12-09 | 杭州隽德科技有限公司 | Wireless transceiver and logic control method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: LIERDA TECHNOLOGY GROUP CO., LTD. Free format text: FORMER NAME: LIERDA SCIENCE AND TECHNOLOGY CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang province 310011 Dengyun Road No. 425 Patentee after: Lierda Science & Technology Group Co., Ltd. Address before: Hangzhou City, Zhejiang province 310011 Dengyun Road No. 425 Patentee before: Lierda Science and Technology Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110504 |