CN204906380U - Integrated radio frequency application circuit - Google Patents
Integrated radio frequency application circuit Download PDFInfo
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- CN204906380U CN204906380U CN201520520457.5U CN201520520457U CN204906380U CN 204906380 U CN204906380 U CN 204906380U CN 201520520457 U CN201520520457 U CN 201520520457U CN 204906380 U CN204906380 U CN 204906380U
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Abstract
The utility model relates to a radio frequency circuit technical field, specific theory relates to an integrated radio frequency application circuit. The utility model discloses a NULL U1, NULL U1 loop through power amplification circuit, bandwidth -limited circuit, high pass filter circuit and are connected with antenna signal for handling WIFI, bluetooth signal. NULL U1 still is equipped with communication interface and power source, and NULL U1 is connected with oscillation circuit. The utility model discloses an integrated mode, with bluetooth, the integration of wiFi function to the NULL U1 in to sharing oscillation circuit, power amplification circuit, band -pass filter, high pass filter circuit, the noiseless problem of during operation, and successfully reduce.
Description
Technical field
The utility model relates to radio circuit technical field, specifically, relates to a kind of integrated RF application circuit.
Background technology
Along with the development of electronics technology, the wireless communications mode of current electronic product gets more and more, and there is various wireless communication pattern, current many be WIFI telecommunication circuit and bluetooth communication circuit; Due to WIFI and bluetooth in use, be substantially used alone, therefore design time, be designed to two circuit; But electronic product is constantly toward miniaturization development, thus make pcb board also in continuous reduced volume, cause WIFI circuit and Bluetooth circuit when designing, using, mutual interference can be produced; In order to overcome interference, also needing to design extra circuit, bringing the increase of cost.
Summary of the invention
The purpose of this utility model is to solve the deficiencies in the prior art, and provide a kind of integrated RF application circuit, WIFI circuit and Bluetooth circuit integrate by this integrated RF application circuit, can reduce design space, reduce cost.
The technical solution adopted in the utility model is:
A kind of integrated RF application circuit, comprise: for the treatment of the integrated chip U1 of WIFI, Bluetooth signal, integrated chip U1 is connected with aerial signal by power amplification circuit, bandwidth-limited circuit, high-pass filtering circuit successively, described integrated chip U1 is also provided with communication interface and power interface, and integrated chip U1 is connected with oscillating circuit.
Further, described integrated chip U1 comprises Bluetooth RF circuit and WLAN radio circuit, and Bluetooth RF circuit, WLAN radio circuit are equipped with communication interface.
Wherein, described oscillating circuit comprises crystal oscillator chip, and the signal output part of crystal oscillator chip is connected with integrated chip U1 signal respectively with signal receiving end, and the signal output part of crystal oscillator chip and signal receiving end are respectively by capacity earth.
Wherein, power amplification circuit comprises chip U2, described Bluetooth RF circuit is provided with a radiofrequency signal interface, WLAN radio circuit is provided with two transmit interface and two Received signal strength interfaces, and radiofrequency signal interface, two interfaces that transmit are connected with chip U2 signal respectively with two Received signal strength interfaces.
Wherein, chip U2 is provided with 2.4G interface and 5G interface; Bandwidth-limited circuit comprises chip FL1, chip FL1 is provided with Bluetooth signal receiving interface and WiFi signal receiving interface and output interface, Bluetooth signal receiving interface is connected with 2.4G interface and 5G interface signal respectively with WiFi signal receiving interface, and output interface is coupled with high-pass filtering circuit by electric capacity C26.
Wherein, high-pass filtering circuit comprises inductance L 5, and one end of inductance L 5 is connected with electric capacity C26 signal, and this end is by electric capacity C3 ground connection; The other end of inductance L 5 is connected with aerial signal by electric capacity C5, and the described other end is by electric capacity C4 ground connection; Antenna is by electric capacity C25 ground connection.
Wherein, filter circuit is provided with between integrated chip U1 and power amplification circuit.
The beneficial effects of the utility model are: the utility model adopts integrated mode, by bluetooth, WiFi function i ntegration in integrated chip U1, and shared oscillation circuit, power amplification circuit, bandpass filtering, high-pass filtering circuit; Noiseless problem during work, and successfully reduce.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present utility model.
Reference numeral:
1---communication interface; 2---communication interface; 3---power interface; 4---oscillating circuit; 5---filter circuit; 6---power amplification circuit; 7---bandwidth-limited circuit; 8---high-pass filtering circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is further described.
Embodiment:
As shown in Figure 1, a kind of integrated RF application circuit, comprise: for the treatment of the integrated chip U1 of WIFI, Bluetooth signal, integrated chip U1 is connected with aerial signal by power amplification circuit 6, bandwidth-limited circuit 7, high-pass filtering circuit 8 successively, described integrated chip U1 is also provided with communication interface and power interface 3, and integrated chip U1 is connected with oscillating circuit 4.
WIFI, bluetooth operating circuit are integrated into a chip by the technical program, and to this chip design peripheral circuit, at work, share power amplification circuit 6, bandwidth-limited circuit 7, high-pass filtering circuit 8 and antenna; Thus reach the effect of saving design space, and reduce costs.
Further, described integrated chip U1 comprises Bluetooth RF circuit (BT_RF) and WLAN radio circuit (WLAN_RF), and Bluetooth RF circuit is provided with communication interface 1, WLAN radio circuit is provided with communication interface 2.
When specific works, the local frequency that WLAN radio circuit is provided by acquisition oscillating circuit 4 produces a wireless signal, and be transferred to power amplification circuit 6 and amplify, the wireless signal amplified is carrying out shaping by bandwidth-limited circuit 7, then be coupled to high-pass filtering circuit 8, go out finally by antenna transmission; The WLAN wireless signal received is arrived high-pass filtering circuit 8 by antenna after overcoupling simultaneously, again by after bandwidth-limited circuit 7 filtering noise information, noise, clean signal is sent to power amplification circuit 6, power amplification circuit 6 only transmits not do for Received signal strength and amplifies, signal gets back to WLAN radio circuit, is sent to equipment after row relax of going forward side by side by communication interface by communicating circuit.
The local frequency that same Bluetooth circuit is provided by acquisition oscillating circuit 4 produces a wireless signal, again signal is input to power amplification circuit 6 to amplify, then after bandwidth-limited circuit 7 carries out shaping, be coupled to high-pass filtering circuit 8, go out finally by antenna transmission; The BT(bluetooth that simultaneously will receive) wireless signal after overcoupling to high-pass filtering circuit 8, after filtering noise information, clean signal is sent to power amplification circuit 6, power amplification circuit 6 only transmits not do for Received signal strength and amplifies, and signal is got back to the laggard row relax of Bluetooth RF circuit and is sent to equipment by external communicating circuit again.
Secondly, integrated chip U1 is provided with power interface 3, and is connected with power circuit by power interface 3.
As shown in Figure 1, described oscillating circuit 4 comprises crystal oscillator chip, and the signal output part of crystal oscillator chip is connected with integrated chip U1 signal respectively with signal receiving end, provides local frequency to integrated chip U1.The signal output part of crystal oscillator chip and signal receiving end are respectively by capacity earth.Crystal oscillator chip adopts 38.4MHZ.
As shown in Figure 1, power amplification circuit 6 comprises chip U2, described Bluetooth RF circuit is provided with a radiofrequency signal interface BT_RF, WLAN radio circuit is provided with two transmit interface TX_2, TX_5 and two Received signal strength interfaces RX_2, RX_5, and above-mentioned radiofrequency signal interface BT_RF, two transmit interface TX_2, TX_5 are connected with chip U2 signal respectively by filter circuit 5 with two Received signal strength interfaces RX_2, RX_5.
Wherein, chip U2 is provided with 2.4G interface 2GANT and 5G interface 5GANT; Bandwidth-limited circuit 7 comprises chip FL1, chip FL1 is provided with Bluetooth signal receiving interface 2G_IN and WiFi signal receiving interface 5G_IN and output interface OUT, Bluetooth signal receiving interface 2G_IN is connected with 2.4G interface 2GANT and 5G interface signal 5GANT respectively with WiFi signal receiving interface 5G_IN, and output interface OUT is coupled with high-pass filtering circuit 8 by electric capacity C26.
Power amplification circuit 6 is provided with the circuit respectively Bluetooth signal of 2.4G, the WiFi signal of 5G being carried out to signal transacting, and respectively external signal is connected with 5G interface 5GANT by 2.4G interface 2GANT, simultaneously bandwidth-limited circuit 7 also carries out signal transacting to the Bluetooth signal of 2.4G, the WiFi signal of 5G respectively, thus make bluetooth, WiFi shares power amplification circuit 6 and bandwidth-limited circuit 7.
Wherein, high-pass filtering circuit 8 comprises inductance L 5, and one end of inductance L 5 is connected with electric capacity C26 signal, and this end is by electric capacity C3 ground connection; The other end of inductance L 5 is connected with aerial signal by electric capacity C5, and the described other end is by electric capacity C4 ground connection; Antenna is by electric capacity C25 ground connection.
The model of integrated chip U1 is 88W8787.The model of chip U2 is AWL9966.Chip FL1 can be HMD881J.
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 (7)
1. an integrated RF application circuit, it is characterized in that: comprise the integrated chip U1 for the treatment of WIFI, Bluetooth signal, integrated chip U1 is connected with aerial signal by power amplification circuit, bandwidth-limited circuit, high-pass filtering circuit successively, described integrated chip U1 is also provided with communication interface and power interface, and integrated chip U1 is connected with oscillating circuit.
2. a kind of integrated RF application circuit according to claim 1, it is characterized in that: described integrated chip U1 comprises Bluetooth RF circuit and WLAN radio circuit, Bluetooth RF circuit, WLAN radio circuit are equipped with communication interface.
3. a kind of integrated RF application circuit according to claim 2, it is characterized in that: described oscillating circuit comprises crystal oscillator chip, the signal output part of crystal oscillator chip is connected with integrated chip U1 signal respectively with signal receiving end, and the signal output part of crystal oscillator chip and signal receiving end are respectively by capacity earth.
4. a kind of integrated RF application circuit according to claim 3, it is characterized in that: power amplification circuit comprises chip U2, described Bluetooth RF circuit is provided with a radiofrequency signal interface, WLAN radio circuit is provided with two transmit interface and two Received signal strength interfaces, and radiofrequency signal interface, two interfaces that transmit are connected with chip U2 signal respectively with two Received signal strength interfaces.
5. a kind of integrated RF application circuit according to claim 4, is characterized in that: chip U2 is provided with 2.4G interface and 5G interface; Bandwidth-limited circuit comprises chip FL1, chip FL1 is provided with Bluetooth signal receiving interface and WiFi signal receiving interface and output interface, Bluetooth signal receiving interface is connected with 2.4G interface and 5G interface signal respectively with WiFi signal receiving interface, and output interface is coupled with high-pass filtering circuit by electric capacity C26.
6. a kind of integrated RF application circuit according to claim 5, is characterized in that: high-pass filtering circuit comprises inductance L 5, and one end of inductance L 5 is connected with electric capacity C26 signal, and this end is by electric capacity C3 ground connection; The other end of inductance L 5 is connected with aerial signal by electric capacity C5, and the described other end is by electric capacity C4 ground connection; Antenna is by electric capacity C25 ground connection.
7., according to the arbitrary described a kind of integrated RF application circuit of claim 1 to 6, it is characterized in that: between integrated chip U1 and power amplification circuit, be provided with filter circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520520457.5U CN204906380U (en) | 2015-07-17 | 2015-07-17 | Integrated radio frequency application circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520520457.5U CN204906380U (en) | 2015-07-17 | 2015-07-17 | Integrated radio frequency application circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204906380U true CN204906380U (en) | 2015-12-23 |
Family
ID=54928524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520520457.5U Expired - Fee Related CN204906380U (en) | 2015-07-17 | 2015-07-17 | Integrated radio frequency application circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204906380U (en) |
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2015
- 2015-07-17 CN CN201520520457.5U patent/CN204906380U/en not_active Expired - Fee Related
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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 |