CN204906379U - WiFi radio frequency application circuit - Google Patents
WiFi radio frequency application circuit Download PDFInfo
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- CN204906379U CN204906379U CN201520520348.3U CN201520520348U CN204906379U CN 204906379 U CN204906379 U CN 204906379U CN 201520520348 U CN201520520348 U CN 201520520348U CN 204906379 U CN204906379 U CN 204906379U
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Abstract
The utility model relates to a radio frequency circuit technical field, specific theory relates to a wifi radio frequency application circuit. It includes wiFi control chip and oscillation circuit, and wiFi control chip and vibrating circuit signal connection, wiFi control chip are connected with transmitting circuit and receiving circuit, and the signal output part of transmitting circuit is connected with mixing signal circuit, receiving circuit's oscillation circuit 0 with mixing signal circuit signal connection, mixing signal circuit is through high pass filter circuit and antenna connection. The utility model discloses the debugging integration of wifi radio frequency circuit combines together with MCU chip control, and it is more stable to make the WIFI device work in customer's equipment is used, and with low costs.
Description
Technical field
The utility model relates to radio circuit technical field, specifically, relates to a kind of WiFi radio frequency application circuit.
Background technology
Along with the development of electronic technology, short-range signal transmission technology is constantly developed, in short-range signal transmission technology, the most conventional with WiFi, as WiFi router etc.; Popularizing at present due to smart mobile phone, all has greatly improved to the demand of WiFi and the demand of area coverage; And current WiFi radio circuit in use, have and much all there is job insecurity, radio transmission performance can decline, limited transmission distance.
Summary of the invention
The object of utility model is to solve the deficiencies in the prior art, and provide a kind of new WiFi radio frequency application circuit, this radio frequency application circuit is stable, and transmission range is far away.
The technical solution adopted in the utility model is:
WiFi radio frequency application circuit, comprise WiFi control chip and oscillating circuit, WiFi control chip is connected with vibrating circuit signal, WiFi control chip is connected with radiating circuit and receiving circuit, the signal output part of radiating circuit is connected with mixed signal circuits, the signal input part of receiving circuit is connected with described mixed signal circuits signal, and mixed signal circuits is connected with antenna by high-pass filtering circuit.
Further, described WiFi control chip is provided with two signal emission interfaces and is respectively TX_N interface and TX_P interface, TX_N interface is connected with one end of electric capacity C8 respectively by inductance L 5, inductance L 6 with TX_P interface, the other end ground connection of electric capacity C8, and one end of described electric capacity C8 is connected with power vd D.
Further, radiating circuit comprises electric capacity C5 in parallel and the input of electric capacity C7, electric capacity C5 is connected with TX_N interface, TX_P interface signal respectively with the input of electric capacity C7, and the output of electric capacity C5 is connected with the output end signal of electric capacity C7 by inductance L 4.
Further, described WiFi control chip is provided with two Signal reception interfaces and is respectively RX_P interface and RX_N interface, receiving circuit comprises electric capacity C9 in parallel and electric capacity C10, the input of electric capacity C5 is connected with TX_N interface, TX_P interface signal respectively with the input of electric capacity C7, and the output of electric capacity C5 is connected with the output end signal of electric capacity C7 by inductance L 4.
Further, mixed signal circuits comprises electric capacity C1, electric capacity C3, inductance L 1, inductance L 2; One end ground connection of electric capacity C1, the other end of electric capacity C1 is successively by inductance L 1, electric capacity C3, inductance L 2 ground connection.Particularly, the other end of electric capacity C1 and the second terminals of inductance L 2 are used for being connected with radiating circuit, receiving circuit signal, and inductance L 1 is used for being connected with high-pass filtering circuit signal with the terminals of electric capacity C3.
Further, high-pass filtering circuit comprises electric capacity C4, electric capacity C5, inductance L 3 and resistance R1; Second terminals of inductance L 3 are by electric capacity C4 ground connection, and the first terminals of inductance L 3 are successively by electric capacity C5, resistance R1 ground connection.
The beneficial effects of the utility model are: debugging integration and the MCU chip of the utility model Wifi radio circuit control to combine, and WIFI device is worked together in the equipment application of client more stable, and cost are low.
Accompanying drawing explanation
Fig. 1 is that the principle of the utility model circuit forms schematic diagram.
Fig. 2 is circuit diagram of the present utility model.
Reference numeral:
1---high-pass filtering circuit; 2---mixed signal circuits; 3---receiving circuit; 4---oscillating circuit; 5---radiating circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment: see Fig. 1, Fig. 2.
WiFi radio frequency application circuit, comprise WiFi control chip U1 and oscillating circuit 4, WiFi control chip U1 is connected with vibrating circuit signal, WiFi control chip U1 is connected with radiating circuit 5 and receiving circuit 3, the signal output part of radiating circuit 5 is connected with mixed signal circuits 2, the signal input part of receiving circuit 3 is connected with described mixed signal circuits 2 signal, and mixed signal circuits 2 is connected with antenna by high-pass filtering circuit 1.
In the technical program, become two independent circuit to carry out signal transacting the output of signal, In-put design, avoid the interference between input signal and output signal, improve the stability of signal; During work, WiFi control chip U1 produces a WiFi signal after obtaining the local frequency of oscillating circuit 4, and to be coupled externally transmission by radiating circuit 5, then through mixed signal circuits, frequency is adjusted, then carry out filtering process by high-pass filtering circuit 1, finally sent to external world by antenna.Simultaneously, antenna receives extraneous wireless WiFi signal, enters high-pass filtering circuit 1, high-pass filtering circuit 1 filtering clutter by being coupled into current signal, then enter mixed signal circuits 2 to integrate, finally by receiving circuit 3 coupled transfer to WiFi control chip U1 process.
Further, described WiFi control chip U1 is provided with two signal emission interfaces and is respectively TX_N interface and TX_P interface, TX_N interface is connected with one end of electric capacity C8 respectively by inductance L 5, inductance L 6 with TX_P interface, the other end ground connection of electric capacity C8, one end of described electric capacity C8 is connected with power vd D.
Further, radiating circuit 5 comprises electric capacity C5 in parallel and the input of electric capacity C7, electric capacity C5 is connected with TX_N interface, TX_P interface signal respectively with the input of electric capacity C7, and the output of electric capacity C5 is connected with the output end signal of electric capacity C7 by inductance L 4.
Further, described WiFi control chip U1 is provided with two Signal reception interfaces and is respectively RX_P interface and RX_N interface, receiving circuit 3 comprises electric capacity C9 in parallel and electric capacity C10, the input of electric capacity C5 is connected with TX_N interface, TX_P interface signal respectively with the input of electric capacity C7, and the output of electric capacity C5 is connected with the output end signal of electric capacity C7 by inductance L 4.
Further, mixed signal circuits comprises electric capacity C1, electric capacity C3, inductance L 1, inductance L 2; One end ground connection of electric capacity C1, the other end of electric capacity C1 is successively by inductance L 1, electric capacity C3, inductance L 2 ground connection.Particularly, the other end of electric capacity C1 and the second terminals of inductance L 2 are used for being connected with radiating circuit 5, receiving circuit 3 signal, and inductance L 1 is used for being connected with high-pass filtering circuit 1 signal with the terminals of electric capacity C3.
Further, high-pass filtering circuit 1 comprises electric capacity C4, electric capacity C5, inductance L 3 and resistance R1; Second terminals of inductance L 3 are by electric capacity C4 ground connection, and the first terminals of inductance L 3 are successively by electric capacity C5, resistance R1 ground connection.
WiFi control chip U1 is after obtaining power circuit and powering, receive the local frequency of oscillating circuit 4 and produce a wifi wireless signal and go out through radio circuit coupling firing, signal is gone by antenna transmission by high pass filter circuit through mixed signal circuits adjustment again, receive the wireless signal of backspace through antenna simultaneously, integrate by arriving mixed signal circuits 2 after being coupled to other noise signal of high-pass filtering circuit 1 filtering, then WiFi control chip U1 process is coupled to by receiving circuit 3, then through communicating circuit to device end.
The model of WiFi control chip U1 can be used: RTL8188EUS.
The utility model has been done to explain, and those of ordinary skill in the art should be appreciated that and can modify to the technical solution of the utility model or equivalent replacement, and does not depart from essence and the scope of technical solutions of the utility model.
Claims (6)
1.WiFi radio frequency application circuit, it is characterized in that: comprise WiFi control chip and oscillating circuit, WiFi control chip is connected with vibrating circuit signal, WiFi control chip is connected with radiating circuit and receiving circuit, the signal output part of radiating circuit is connected with mixed signal circuits, the signal input part of receiving circuit is connected with described mixed signal circuits signal, and mixed signal circuits is connected with antenna by high-pass filtering circuit.
2. WiFi radio frequency application circuit according to claim 1, it is characterized in that: described WiFi control chip is provided with two signal emission interfaces and is respectively TX_N interface and TX_P interface, TX_N interface is connected with one end of electric capacity C8 respectively by inductance L 5, inductance L 6 with TX_P interface, the other end ground connection of electric capacity C8, one end of described electric capacity C8 is connected with power vd D.
3. WiFi radio frequency application circuit according to claim 2, it is characterized in that: radiating circuit comprises electric capacity C5 in parallel and electric capacity C7, the input of electric capacity C5 is connected with TX_N interface, TX_P interface signal respectively with the input of electric capacity C7, and the output of electric capacity C5 is connected with the output end signal of electric capacity C7 by inductance L 4.
4. WiFi radio frequency application circuit according to claim 3, it is characterized in that: described WiFi control chip is provided with two Signal reception interfaces and is respectively RX_P interface and RX_N interface, receiving circuit comprises electric capacity C9 in parallel and electric capacity C10, the input of electric capacity C5 is connected with TX_N interface, TX_P interface signal respectively with the input of electric capacity C7, and the output of electric capacity C5 is connected with the output end signal of electric capacity C7 by inductance L 4.
5. WiFi radio frequency application circuit according to claim 4, is characterized in that: mixed signal circuits comprises electric capacity C1, electric capacity C3, inductance L 1, inductance L 2; One end ground connection of electric capacity C1, the other end of electric capacity C1 is successively by inductance L 1, electric capacity C3, inductance L 2 ground connection.
6. WiFi radio frequency application circuit according to claim 5, is characterized in that: high-pass filtering circuit comprises electric capacity C4, electric capacity C5, inductance L 3 and resistance R1; Second terminals of inductance L 3 are by electric capacity C4 ground connection, and the first terminals of inductance L 3 are successively by electric capacity C5, resistance R1 ground connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520520348.3U CN204906379U (en) | 2015-07-17 | 2015-07-17 | WiFi radio frequency application circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520520348.3U CN204906379U (en) | 2015-07-17 | 2015-07-17 | WiFi radio frequency application circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906379U true CN204906379U (en) | 2015-12-23 |
Family
ID=54928523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520520348.3U Expired - Fee Related CN204906379U (en) | 2015-07-17 | 2015-07-17 | WiFi radio frequency application circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906379U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533469A (en) * | 2016-11-28 | 2017-03-22 | 宇龙计算机通信科技(深圳)有限公司 | WIFI signal receiving method and apparatus, baseband chip and radio frequency circuit |
-
2015
- 2015-07-17 CN CN201520520348.3U patent/CN204906379U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106533469A (en) * | 2016-11-28 | 2017-03-22 | 宇龙计算机通信科技(深圳)有限公司 | WIFI signal receiving method and apparatus, baseband chip and radio frequency circuit |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20170717 |