CN205249212U - Wireless radio frequency transceiving ware - Google Patents
Wireless radio frequency transceiving ware Download PDFInfo
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- CN205249212U CN205249212U CN201521048498.5U CN201521048498U CN205249212U CN 205249212 U CN205249212 U CN 205249212U CN 201521048498 U CN201521048498 U CN 201521048498U CN 205249212 U CN205249212 U CN 205249212U
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Abstract
The utility model discloses a wireless radio frequency transceiving ware, including power module and wireless radio frequency transceiving modulation module, wireless radio frequency transceiving modulation module includes antenna, switch, receiving circuit, analytic circuit and transmitting circuit, power module is connected to the power end of switch, antenna connection is to the switch, receiving circuit, analytic circuit, transmitting circuit and switch connect gradually and constitute closed -loop, be connected with impedance matching circuit between switch and the antenna, the utility model discloses sensitivity is high, emission efficiency is high, the interference killing feature is strong, simple structure, and the practicality is strong.
Description
Technical field
The utility model relates to a kind of wireless transceiver, is specifically related to a kind of rf receiver and transmitter.
Background technology
Along with the development of wireless technology, the data receiver between different electronic installations and transmission are developed to the mode of wireless transmission gradually by the mode of wire transmission; Wireless transceiver domain requirement is more and more extensive; But, there is the not strong problem of low, the anti-electromagnetic signal interference performance of efficiency in current existing wireless transceiver.
Utility model content
The utility model provides a kind of rf receiver and transmitter.
The technical solution adopted in the utility model is: a kind of rf receiver and transmitter, comprises power module and radio transceiver modulation module; Radio transceiver modulation module comprises antenna, switch, receiving circuit, parser circuitry and transtation mission circuit; Power module is connected to the power end of switch; Described antenna is connected to switch; Receiving circuit, parser circuitry, transtation mission circuit and switch connect and compose closed-loop path successively; Between described switch and antenna, be connected with impedance matching circuit.
Further, also comprise magnetic bead, magnetic bead is series between power module and the power end of switch.
Further, described impedance matching circuit comprises the capacitor C 1 being connected in series between switch and antenna, also comprises the capacitor C 2 between wire and the earth connection being connected between capacitor C 1 and antenna; It is 50 Ω that impedance matching circuit makes antenna impedance.
Further, the capacitance of described capacitor C 1 is 3.9pF, and capacitor C 2 capacitances are 1.8pF.
Further, described receiving circuit comprises the inductance L 1, capacitor C 3 and the capacitor C 4 that connect successively; One end of capacitor C 4 is connected to switch; Also comprise and be connected to the capacitor C 5 between wire and earth connection between inductance L 1 and capacitor C 3.
Further, the inductance value of described inductance L 1 is 4.7mH, and the capacitance of capacitor C 3 is 47pF, and the capacitance of capacitor C 4 is 47pF.
Further, the transmitting impedance of described transtation mission circuit is 50 Ω.
The beneficial effects of the utility model are:
(1) the utility model arranges impedance matching circuit and can make antenna impedance remain on 50 Ω between antenna and switch, and antenna performance performs to best;
(2) sensitivity that in the utility model, the design of receiving circuit can improve circuit;
(3) in the utility model, transtation mission circuit reduces the loss of transmitting power by designing impedance matching, raises the efficiency;
(4) the utility model can reduce the impact of the signal of telecommunication on transmitting-receiving modulation module by magnetic bead is set;
(5) the utility model is simple in structure, easy to use, and efficiency is high, highly sensitive, practical.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model impedance matching circuit figure.
Fig. 3 is the utility model receiving circuit figure.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, a kind of rf receiver and transmitter, comprises power module and radio transceiver modulation module; Radio transceiver modulation module comprises antenna, switch, receiving circuit, parser circuitry and transtation mission circuit; Power module is connected to the power end of switch; Described antenna is connected to switch; Receiving circuit, parser circuitry, transtation mission circuit and switch connect and compose closed-loop path successively; Between described switch and antenna, be connected with impedance matching circuit; When use, antenna reception, to wireless signal, sends to parser circuitry by receiving circuit and carries out the parsing of signal, then goes out by antenna transmission sending to antenna through the signal of resolving by transtation mission circuit; Parser circuitry is carried out signal resolution by LORA modulation system, can increase communication distance, and while compatibility is also supported FSK, GFSK, MSK, GMSK, OOK traditional modulation.
Further, also comprise magnetic bead, magnetic bead is series between power module and wireless receiving and dispatching modulation module; Between power module and radio transceiver modulation module, connect magnetic bead and can filter clutter below 1G, increased radio-frequency power supply stability.
Further, described impedance matching circuit comprises the capacitor C 1 being connected in series between switch and antenna, also comprises the capacitor C 2 between wire and the earth connection being connected between capacitor C 1 and antenna; It is 50 Ω that impedance matching circuit makes antenna impedance, can make antenna performance perform to best by design impedance matching circuit.
Further, the capacitance of described capacitor C 1 is 3.9pF, and capacitor C 2 capacitances are 1.8pF; Ensure that by the design of capacitance in impedance matching circuit antenna impedance is 50 Ω.
Further, described receiving circuit comprises the inductance L 1, capacitor C 3 and the capacitor C 4 that connect successively; One end of capacitor C 4 is connected to switch; Also comprise and be connected to the capacitor C 5 between wire and earth connection between inductance L 1 and capacitor C 3; Design by receiving circuit can improve receiving sensitivity.
Further, the inductance value of described inductance L 1 is 4.7mH, and the capacitance of capacitor C 3 is 47pF, and the capacitance of capacitor C 4 is 47pF; Can make reach-138dbm of receiving sensitivity by the design of receiving circuit components and parts.
Further, the transmitting impedance of described transtation mission circuit is 50 Ω; Can reduce transmitting power reflection by transtation mission circuit designing impedance matching, improve emission effciency.
The utility model can be widely used in the short distance Internet of Things radio communication of various occasions, the feature such as it has, and volume is little, low in energy consumption, long transmission distance, antijamming capability are strong; Its working frequency range is at 470-510MHz, and transmitting power is 50mW(17dBm), communication distance is greater than 2.5km, and building penetrability is strong; And the utility model adopts LORA modulation system, can be simultaneously compatible and support FSK, GFSK, MSK, GMSK, OOK traditional modulation; The utility model emission effciency is higher, generally can reach more than 90%, practical.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all any amendments of doing within spirit of the present utility model and principle, be equal to and replace and improvement etc., within all should being included in protection domain of the present utility model.
Claims (7)
1. a rf receiver and transmitter, is characterized in that: comprise power module and radio transceiver modulation module; Radio transceiver modulation module comprises antenna, switch, receiving circuit, parser circuitry and transtation mission circuit; Power module is connected to the power end of switch; Described antenna is connected to switch; Receiving circuit, parser circuitry, transtation mission circuit and switch connect and compose closed-loop path successively; Between described switch and antenna, be connected with impedance matching circuit.
2. a kind of rf receiver and transmitter according to claim 1, is characterized in that: also comprise that magnetic bead, magnetic bead are series between power module and the power end of switch.
3. a kind of rf receiver and transmitter according to claim 1, is characterized in that: described impedance matching circuit comprises the capacitor C 1 being connected in series between switch and antenna, also comprises the capacitor C 2 between wire and the earth connection being connected between capacitor C 1 and antenna; It is 50 Ω that impedance matching circuit makes antenna impedance.
4. a kind of rf receiver and transmitter according to claim 3, is characterized in that: the capacitance of described capacitor C 1 is 3.9pF, and capacitor C 2 capacitances are 1.8pF.
5. a kind of rf receiver and transmitter according to claim 1, is characterized in that: described receiving circuit comprises the inductance L 1, capacitor C 3 and the capacitor C 4 that connect successively; One end of capacitor C 4 is connected to switch; Also comprise and be connected to the capacitor C 5 between wire and earth connection between inductance L 1 and capacitor C 3.
6. a kind of rf receiver and transmitter according to claim 5, is characterized in that: the inductance value of described inductance L 1 is 4.7mH, and the capacitance of capacitor C 3 is 47pF, and the capacitance of capacitor C 4 is 47pF.
7. a kind of rf receiver and transmitter according to claim 1, is characterized in that: the transmitting impedance of described transtation mission circuit is 50 Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048498.5U CN205249212U (en) | 2015-12-16 | 2015-12-16 | Wireless radio frequency transceiving ware |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521048498.5U CN205249212U (en) | 2015-12-16 | 2015-12-16 | Wireless radio frequency transceiving ware |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205249212U true CN205249212U (en) | 2016-05-18 |
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ID=55948280
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521048498.5U Active CN205249212U (en) | 2015-12-16 | 2015-12-16 | Wireless radio frequency transceiving ware |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205249212U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009886A (en) * | 2018-01-04 | 2019-07-12 | 法雷奥汽车内部控制（深圳）有限公司 | Anti-interference device and remote control device including the anti-interference device |
-
2015
- 2015-12-16 CN CN201521048498.5U patent/CN205249212U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110009886A (en) * | 2018-01-04 | 2019-07-12 | 法雷奥汽车内部控制（深圳）有限公司 | Anti-interference device and remote control device including the anti-interference device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20180717 Address after: 610041 Sichuan Chengdu hi tech Zone, China (Sichuan) free trade zone, 1700 north section of Tianfu Road, Chengdu hi tech Zone. Patentee after: AI noo Measurement & Technology Co., Ltd. Address before: No. 8, gaon Dong Road, high tech Zone, Chengdu, Sichuan Province Patentee before: Chengdu sound Li Deke Technology Co., Ltd. |
|
| TR01 | Transfer of patent right |