CN202435346U - Signal amplification circuit of communication equipment - Google Patents
Signal amplification circuit of communication equipment Download PDFInfo
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- CN202435346U CN202435346U CN2012200238073U CN201220023807U CN202435346U CN 202435346 U CN202435346 U CN 202435346U CN 2012200238073 U CN2012200238073 U CN 2012200238073U CN 201220023807 U CN201220023807 U CN 201220023807U CN 202435346 U CN202435346 U CN 202435346U
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Abstract
The utility model provides a signal amplification circuit of communication equipment. The circuit comprises a first power amplifier power supply control circuit, a first switching circuit, a first power amplification circuit, a second power amplifier power supply control circuit, a second switching circuit, a second power amplification circuit, a band-pass filter circuit and an antenna, wherein the first power amplifier power supply control circuit is connected with the first power amplification circuit; the second power amplifier power supply control circuit is connected with the second power amplification circuit; the first switching circuit is connected with the first power amplification circuit and the second power amplification circuit respectively; both the first power amplification circuit and the second power amplification circuit are connected with the second switching circuit; the second switching circuit is connected with the band-pass filter circuit via a capacitor C42; and the band-pass filter circuit is connected with the antenna. By adopting the signal amplification circuit, the communication equipment with power being 433M can remotely receive and transmit communication signals at high speed.
Description
[technical field]
The utility model relates to the wireless communication technique field, particularly a kind of signal amplification circuit of communication equipment of 433M power.
[background technology]
The communication equipment of 433M power exists does not at present have the signal amplification or has only folk prescription under the situation that signal amplifies, and has the problem of traffic rate and communication distance mutual restriction yet, if traffic rate is low, then communication distance is far away; If traffic rate is high, then communication distance is near.The design of the signal amplification circuit that it is at present comparatively general is as shown in Figure 1, and this signal amplification circuit is made up of the input signal end PA_ANTA, capacitance C41, power amplification circuit, capacitance C43, band pass filter circuit and the antenna that connect successively; Wherein signal is imported from input signal end PA_ANTA; Through capacitor C 41 after straight; After U12 power amplifying transistor in the process power amplification circuit carries out the signal amplification; Again through capacitor C 43 at a distance from straight, pass to band pass filter circuit, band pass filter circuit flows to antenna after to some the frequency filtering in the signal.The design of the signal amplification circuit that this is general just has the problem of traffic rate and communication distance mutual restriction; It is low promptly to work as traffic rate, and then communication distance is far away; When the traffic rate height, then communication distance is near.
[summary of the invention]
The technical problem that the utility model will solve is to provide a kind of signal amplification circuit of communication equipment.
The utility model is achieved in that a kind of signal amplification circuit of communication equipment, comprises the first amplifier power supply control circuit, first switching circuit, first power amplification circuit, the second amplifier power supply control circuit, second switch circuit, second power amplification circuit, band pass filter circuit and antenna; The said first amplifier power supply control circuit is connected with said first power amplification circuit; The said second amplifier power supply control circuit is connected with said second power amplification circuit; Said first switching circuit is connected with said first power amplification circuit, second power amplification circuit respectively; Said first power amplification circuit, second power amplification circuit all are connected with said second switch circuit; Said second switch circuit is connected with said band pass filter circuit through a capacitor C 42, and said band pass filter circuit is connected with said antenna.
Further, said first switching circuit and second switch circuit are the UPG2214 chip.
Further, the said first amplifier power supply control circuit comprises power input P36PACT_TE, resistance R 49, resistance R 36, triode Q4, resistance R 48, metal-oxide-semiconductor Q7, capacitor C 36 and capacitor C 37; Said power input P36PACT_TE is connected through the base stage of resistance R 36 with triode Q4, and said resistance R 49 1 ends are connected with said power input P36PACT_TE, and the other end connects signal ground; The emitter-base bandgap grading of said triode Q4 connects signal ground, and collector electrode is connected with the G collection of resistance R 48 1 ends and metal-oxide-semiconductor Q7 respectively, and resistance R 48 other ends are connected with the D collection of metal-oxide-semiconductor Q7; One end of said capacitor C 36 is connected with said resistance R 48, and the other end connects signal ground; The S collection of said metal-oxide-semiconductor Q7 is connected with said first power amplification circuit with an end of capacitor C 37 respectively; Said capacitor C 37 another termination signal grounds; The said second amplifier power supply control circuit comprises power input P37PACT_RE, resistance R 56, resistance R 55, triode Q9, resistance R 54, metal-oxide-semiconductor Q8, capacitor C 49 and capacitor C 53; Said power input P37PACT_RE is connected through the base stage of resistance R 55 with triode Q9, and said resistance R 56 1 ends are connected with said power input P37PACT_RE, and the other end connects signal ground; The emitter-base bandgap grading of said triode Q9 connects signal ground, and collector electrode is connected with the G collection of resistance R 54 1 ends and metal-oxide-semiconductor Q8 respectively, and resistance R 54 other ends are connected with the D collection of metal-oxide-semiconductor Q8; One end of said capacitor C 49 is connected with said resistance R 54, and the other end connects signal ground; The S collection of said metal-oxide-semiconductor Q8 is connected with said second power amplification circuit with an end of capacitor C 53 respectively; Said capacitor C 53 another termination signal grounds; 5 pin of the said first switching circuit U8 connect a signal input part PA_ANTA; 1 pin of the first switching circuit U8 is connected with said first power amplification circuit through a capacitor C 38; 2 pin of the first switching circuit U8 connect signal ground, and 3 pin of the first switching circuit U8 are connected with said second power amplification circuit through a capacitor C 41; Said first power amplification circuit is connected with 3 pin of said second switch U9 through a capacitor C 39, and said second power amplification circuit is connected with 1 pin of said second switch U9 through a capacitor C 43; 2 pin of said second switch U9 connect signal ground, and 5 pin of second switch U9 are connected with said band pass filter circuit through said capacitor C 42.
The advantage of the utility model is: the signal amplification circuit of the communication equipment of the utility model comprises the first amplifier power supply control circuit, first switching circuit, first power amplification circuit, the second amplifier power supply control circuit, second switch circuit, second power amplification circuit, band pass filter circuit and antenna; When communication equipment sends signal; Signal is from the PA_ANTA end input of first switching circuit; Amplify through passing to second power amplification circuit behind the first switching circuit U8; Be transferred to band pass filter circuit through second switch circuit U 9 again, band pass filter circuit flows to antenna after to some the frequency filtering in the signal; The signal of accomplishing communication equipment sends.When communication equipment receives signal; Signal inputs to band pass filter circuit from antenna end; Band pass filter circuit flows to second switch circuit U 9 after to some the frequency filtering in the signal, and after first power amplification circuit amplifies, signal is passed to the first switching circuit U8; From the output of PA_ANTA end, the signal of accomplishing communication equipment receives at last.The signal amplification circuit of the utility model makes that the communication equipment of 433M power can two-forty, receives and send signal of communication at a distance.
[description of drawings]
Fig. 1 is the structure principle chart of signal amplification circuit in the prior art.
Fig. 2 is the electrical block diagram of the utility model.
Fig. 3 is the circuit structure schematic diagram of the utility model.
[embodiment]
See also Fig. 2 and shown in Figure 3; The signal amplification circuit of a kind of communication equipment of the utility model comprises the first amplifier power supply control circuit 1, first switching circuit 2, first power amplification circuit 3, the second amplifier power supply control circuit 4, second switch circuit 5, second power amplification circuit 6, band pass filter circuit 7 and antenna 8; The said first amplifier power supply control circuit 1 is connected with said first power amplification circuit 3; The said second amplifier power supply control circuit 4 is connected with said second power amplification circuit 6; Said first switching circuit 2 is connected with said first power amplification circuit 3, second power amplification circuit 6 respectively; Said first power amplification circuit 3, second power amplification circuit 6 all are connected with said second switch circuit 5; Said second switch circuit 5 is connected with said band pass filter circuit 7 through a capacitor C 42, and said band pass filter circuit 7 is connected with said antenna 8.Wherein said first switching circuit 2 is the UPG2214 chip with second switch circuit 5.
As shown in Figure 3, the first amplifier power supply control circuit 1 of the utility model comprises power input P36PACT_TE, resistance R 49, resistance R 36, triode Q4, resistance R 48, metal-oxide-semiconductor Q7, capacitor C 36 and capacitor C 37; Said power input P36PACT_TE is connected through the base stage of resistance R 36 with triode Q4, and said resistance R 49 1 ends are connected with said power input P36PACT_TE, and the other end connects signal ground; The emitter-base bandgap grading of said triode Q4 connects signal ground, and collector electrode is connected with the G collection of resistance R 48 1 ends and metal-oxide-semiconductor Q7 respectively, and resistance R 48 other ends are connected with the D collection of metal-oxide-semiconductor Q7; One end of said capacitor C 36 is connected with said resistance R 48, and the other end connects signal ground; The S collection of said metal-oxide-semiconductor Q7 is connected with said first power amplification circuit 3 with an end of capacitor C 37 respectively; Said capacitor C 37 another termination signal grounds; The said second amplifier power supply control circuit 4 comprises power input P37PACT_RE, resistance R 56, resistance R 55, triode Q9, resistance R 54, metal-oxide-semiconductor Q8, capacitor C 49 and capacitor C 53; Said power input P37PACT_RE is connected through the base stage of resistance R 55 with triode Q9, and said resistance R 56 1 ends are connected with said power input P37PACT RE, and the other end connects signal ground; The emitter-base bandgap grading of said triode Q9 connects signal ground, and collector electrode is connected with the G collection of resistance R 54 1 ends and metal-oxide-semiconductor Q8 respectively, and resistance R 54 other ends are connected with the D collection of metal-oxide-semiconductor Q8; One end of said capacitor C 49 is connected with said resistance R 54, and the other end connects signal ground; The S collection of said metal-oxide-semiconductor Q8 is connected with said second power amplification circuit 6 with an end of capacitor C 53 respectively; Said capacitor C 53 another termination signal grounds; 5 pin of the said first switching circuit U8 connect a signal input part PA_ANTA; 1 pin of the first switching circuit U8 is connected with said first power amplification circuit 3 through a capacitor C 38; 2 pin of the first switching circuit U8 connect signal ground, and 3 pin of the first switching circuit U8 are connected with said second power amplification circuit 6 through a capacitor C 41; Said first power amplification circuit 3 is connected with 3 pin of said second switch U9 through a capacitor C 39, and said second power amplification circuit 6 is connected with 1 pin of said second switch U9 through a capacitor C 43; 2 pin of said second switch U9 connect signal ground, and 5 pin of second switch U9 are connected with said band pass filter circuit 7 through said capacitor C 42.
Wherein band pass filter circuit 7 comprises inductance L 20, inductance L 22, inductance L 21, capacitor C 52 and capacitor C 48; Said inductance L 20, inductance L 21, capacitor C 52 connect successively; One end of said inductance L 22 is parallel between said inductance L 20 and the inductance L 21, another termination signal ground; One end of said capacitor C 52 is parallel between said inductance L 20 and the inductance L 21, another termination signal ground.Contain power amplifying transistor U13 in first power amplification circuit 3, contain power amplifying transistor U12 in second power amplification circuit 6.4 pin of the first switching circuit U8 also are connected with power input P30PA_TE, and 6 pin of the first switching circuit U8 also are connected with power input P31PA_RE; 4 pin of second switch circuit U 9 also are connected with power input P35PA_RE, and 6 pin of second switch circuit U 9 also are connected with power input P34PA_TE.
The operation principle of the utility model is following:
When communication equipment sends signal; Signal is from the PA_ANTA end input of first switching circuit 2; Amplify through passing to second power amplification circuit 6 behind the first switching circuit U8; Be transferred to band pass filter circuit through second switch circuit U 9 again, flow to antenna 8 after some the frequency filtering in 7 pairs of signals of band pass filter circuit; The signal of accomplishing communication equipment sends.Wherein the P37PACT_RE in the signal amplification circuit is a high level, triode Q9 conducting, and metal-oxide-semiconductor Q8 conducting, power amplifying transistor U12 has the power supply of 5V; P36PACT_TE is a low level, and triode Q4 ends, and metal-oxide-semiconductor Q7 ends, and power amplifying transistor U13 does not have.P30PA_TE is a low level, and P31PA_RE is a high level, first switch U8 switch chip INPUT and the OUTPUT2 conducting, second switch U9 switch chip INPUT and OUTPUT1 conducting.
When communication equipment receives signal; Signal inputs to band pass filter circuit 7 from antenna 8 ends; Flow to second switch circuit U 9 after some frequency filtering in 7 pairs of signals of band pass filter circuit, and after first power amplification circuit 3 amplifies, signal is passed to the first switching circuit U8; From the output of PA ANTA end, the signal of accomplishing communication equipment receives at last.Wherein the P37PACT_RE in the signal amplification circuit is a low level, and triode Q9 ends, and metal-oxide-semiconductor Q8 ends; Power amplifying transistor U12 does not have electricity, and P36PACT_TE is a high level, triode Q4 conducting; Metal-oxide-semiconductor Q7 conducting, power amplifying transistor U13 has the power supply of 5V.P30PA_TE is a high level, and P31PA_RE is a low level, first switch U8 switch chip INPUT and the OUTPUT1 conducting, second switch U9 switch chip INPUT and OUTPUT2 conducting.
The signal amplification circuit of the utility model makes that the communication equipment of 433M power can two-forty, receives and send signal of communication at a distance.
The above is merely the preferred embodiment of the utility model, and all equalizations of being done according to the utility model claim change and modify, and all should belong to the covering scope of the utility model.
Claims (3)
1. the signal amplification circuit of a communication equipment is characterized in that: comprise the first amplifier power supply control circuit, first switching circuit, first power amplification circuit, the second amplifier power supply control circuit, second switch circuit, second power amplification circuit, band pass filter circuit and antenna; The said first amplifier power supply control circuit is connected with said first power amplification circuit; The said second amplifier power supply control circuit is connected with said second power amplification circuit; Said first switching circuit is connected with said first power amplification circuit, second power amplification circuit respectively; Said first power amplification circuit, second power amplification circuit all are connected with said second switch circuit; Said second switch circuit is connected with said band pass filter circuit through a capacitor C 42, and said band pass filter circuit is connected with said antenna.
2. the signal amplification circuit of communication equipment according to claim 1, it is characterized in that: said first switching circuit and second switch circuit are the UPG2214 chip.
3. the signal amplification circuit of communication equipment according to claim 2, it is characterized in that: the said first amplifier power supply control circuit comprises power input P36PACT_TE, resistance R 49, resistance R 36, triode Q4, resistance R 48, metal-oxide-semiconductor Q7, capacitor C 36 and capacitor C 37; Said power input P36PACT_TE is connected through the base stage of resistance R 36 with triode Q4, and said resistance R 49 1 ends are connected with said power input P36PACT_TE, and the other end connects signal ground; The emitter-base bandgap grading of said triode Q4 connects signal ground, and collector electrode is connected with the G collection of resistance R 48 1 ends and metal-oxide-semiconductor Q7 respectively, and resistance R 48 other ends are connected with the D collection of metal-oxide-semiconductor Q7; One end of said capacitor C 36 is connected with said resistance R 48, and the other end connects signal ground; The S collection of said metal-oxide-semiconductor Q7 is connected with said first power amplification circuit with an end of capacitor C 37 respectively; Said capacitor C 37 another termination signal grounds; The said second amplifier power supply control circuit comprises power input P37PACT_RE, resistance R 56, resistance R 55, triode Q9, resistance R 54, metal-oxide-semiconductor Q8, capacitor C 49 and capacitor C 53; Said power input P37PACT_RE is connected through the base stage of resistance R 55 with triode Q9, and said resistance R 56 1 ends are connected with said power input P37PACT_RE, and the other end connects signal ground; The emitter-base bandgap grading of said triode Q9 connects signal ground, and collector electrode is connected with the G collection of resistance R 54 1 ends and metal-oxide-semiconductor Q8 respectively, and resistance R 54 other ends are connected with the D collection of metal-oxide-semiconductor Q8; One end of said capacitor C 49 is connected with said resistance R 54, and the other end connects signal ground; The S collection of said metal-oxide-semiconductor Q8 is connected with said second power amplification circuit with an end of capacitor C 53 respectively; Said capacitor C 53 another termination signal grounds; 5 pin of the said first switching circuit U8 connect a signal input part PA_ANTA; 1 pin of the first switching circuit U8 is connected with said first power amplification circuit through a capacitor C 38; 2 pin of the first switching circuit U8 connect signal ground, and 3 pin of the first switching circuit U8 are connected with said second power amplification circuit through a capacitor C 41; Said first power amplification circuit is connected with 3 pin of said second switch U9 through a capacitor C 39, and said second power amplification circuit is connected with 1 pin of said second switch U9 through a capacitor C 43; 2 pin of said second switch U9 connect signal ground, and 5 pin of second switch U9 are connected with said band pass filter circuit through said capacitor C 42.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200238073U CN202435346U (en) | 2012-01-18 | 2012-01-18 | Signal amplification circuit of communication equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200238073U CN202435346U (en) | 2012-01-18 | 2012-01-18 | Signal amplification circuit of communication equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202435346U true CN202435346U (en) | 2012-09-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200238073U Expired - Fee Related CN202435346U (en) | 2012-01-18 | 2012-01-18 | Signal amplification circuit of communication equipment |
Country Status (1)
| Country | Link |
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| CN (1) | CN202435346U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054492A (en) * | 2017-12-01 | 2018-05-18 | 海宁海微电子科技有限公司 | A kind of antenna for mobile phone tuning circuit |
-
2012
- 2012-01-18 CN CN2012200238073U patent/CN202435346U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108054492A (en) * | 2017-12-01 | 2018-05-18 | 海宁海微电子科技有限公司 | A kind of antenna for mobile phone tuning 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 |
Granted publication date: 20120912 Termination date: 20190118 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |