CN212727015U - Wireless transceiver module - Google Patents
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- CN212727015U CN212727015U CN202021897239.0U CN202021897239U CN212727015U CN 212727015 U CN212727015 U CN 212727015U CN 202021897239 U CN202021897239 U CN 202021897239U CN 212727015 U CN212727015 U CN 212727015U
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Abstract
The utility model relates to a wireless transceiver module, which comprises a wireless receiving unit and a wireless transmitting unit; when the wireless receiving unit is used, the wireless transmitting unit transmits first radio waves for an external wireless receiving and transmitting module to receive, and the wireless receiving unit receives second radio waves transmitted by the external wireless receiving and transmitting module; the oscillation unit generates an oscillation electric signal with the same frequency as a second radio wave sent by an external wireless transceiving module; the frequency-selective amplifying unit receives the radio wave propagated in the free space, and when the frequency of the radio wave is close to or the same as that of the second radio wave, the frequency-selective amplifying unit amplifies the radio wave and outputs a second control signal while the second oscillating unit starts oscillating; when the frequency of the second control signal is the same as that of the oscillating electric signal, the comparison amplification unit outputs a digital electric signal to an external decoding chip for decoding according to the amplitude of the second control signal; the circuit is simple, low in cost, small in size, convenient to use and wide in applicability.
Description
Technical Field
The utility model relates to a wireless communication technology field, more specifically say, relate to a wireless transceiver module.
Background
With the continuous improvement of living standard, people have more and more requirements on wireless transceiving circuits; however, most of the existing wireless transceiver circuits have the disadvantages of complicated circuits, high cost and large volume, and have inequality satisfaction for the use requirements of people.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model lies in, to the above-mentioned defect of prior art, provide a circuit simple, with low costs, small, convenient to use, extensive applicability general wireless transceiver module.
The utility model provides a technical scheme that its technical problem adopted is:
constructing a wireless transceiving module, which comprises a wireless receiving unit and a wireless transmitting unit; the wireless transmitting unit comprises a surface acoustic wave filter, a three-pin inductor and a first triode, wherein pin 1 of the three-pin inductor is connected with the positive electrode of a power supply, pin 2 of the three-pin inductor is connected with the first end of the surface acoustic wave filter, the second end of the surface acoustic wave filter is connected with the base electrode of the first triode, pin 2 of the three-pin inductor is further connected with a first capacitor, pin 3 of the three-pin inductor is connected with the collector electrode of the first triode, and the other end of the first capacitor is grounded;
the base electrode of the first triode is connected with a first resistor and a diode, the anode of the diode is connected with the base electrode of the first triode, and the cathode of the diode is connected with the other end of the first resistor; the other end of the first resistor is a signal input end of the wireless transmitting unit;
the emitting electrode of the first triode is grounded, the collector electrode of the first triode is also connected with a second capacitor, and the other end of the second capacitor is connected with a first antenna; the first antenna is used for converting a first control signal input by the signal input end into a first radio wave and transmitting the first radio wave into free space;
the wireless receiving unit comprises a frequency selection amplifying unit, an oscillating unit and a comparison amplifying unit, wherein the oscillating unit is respectively connected with the frequency selection amplifying unit and the comparison amplifying unit; the oscillation unit is used for generating an oscillation electric signal with the same frequency as the second radio wave transmitted by the external wireless transceiving module; the frequency-selecting amplifying unit is used for receiving radio waves propagating in a free space, and when the frequency of the radio waves is close to or identical to that of the second radio waves, the frequency-selecting amplifying unit amplifies the radio waves and outputs a second control signal while the second oscillating unit starts oscillation; when the frequency of the second control signal is the same as that of the oscillating electric signal, the comparison amplification unit outputs a digital electric signal according to the amplitude of the second control signal; the frequency of the first radio wave is different from the frequency of the second radio wave.
The utility model discloses a wireless transceiver module, wherein, the frequency-selecting amplification unit includes first inductance and third electric capacity and second triode; a base electrode of the second triode is connected with a fourth capacitor, the other end of the fourth capacitor is respectively connected with the first inductor and the third capacitor, the other ends of the first inductor and the third capacitor are grounded, the other end of the fourth capacitor is also connected with a second antenna, and the second antenna is used for receiving the radio waves;
a collector of the second triode is connected with a second resistor, a base of the second triode is connected with a third resistor, the other end of the second resistor is connected with a pull-up resistor, the other end of the pull-up resistor is connected with the anode of the power supply, and the other end of the third resistor is connected with the other end of the second resistor;
and the collector of the second triode is connected with the oscillation unit.
The wireless transceiver module of the present invention, wherein the collector of the second triode is further connected to a fifth capacitor, and the other end of the fifth capacitor is connected to a sixth capacitor and a fourth resistor; the other end of the sixth capacitor is connected with the oscillation unit, and the other end of the fourth resistor is connected with the emitting electrode of the second triode and grounded.
The utility model discloses a wireless transceiver module, wherein, the oscillation unit includes third triode, seventh electric capacity and eighth electric capacity and adjustable inductance; a base electrode of the third triode is connected with the other end of the sixth capacitor, and a collector electrode of the third triode is respectively connected with the eighth capacitor, the adjustable inductor and the fifth resistor; the other end of the fifth resistor is connected with the positive electrode of the power supply;
the other end of the adjustable inductor is connected with the other end of the eighth capacitor and also connected with the seventh capacitor, the other end of the seventh capacitor is connected with the base electrode of the third triode and also connected with a sixth resistor and a seventh resistor, the other end of the sixth resistor is connected with the anode of the power supply, and the other end of the seventh resistor is grounded;
the collector of the third triode is also connected with a ninth capacitor, and the other end of the ninth capacitor is connected with the emitter of the third triode; the emitter of the third triode is also connected with a second inductor, and the other end of the second inductor is connected with the other end of the fifth capacitor; the other end of the second inductor is connected with the comparison amplification unit.
The utility model discloses a wireless transceiver module, wherein, the comparison and amplification unit includes operational amplifier, tenth electric capacity and eighth resistance; a pin 5 of the operational amplifier is connected with the tenth capacitor, the other end of the tenth capacitor is connected with the eighth resistor, and the other end of the eighth resistor is connected with the other end of the second inductor; a pin 6 of the operational amplifier is connected with a ninth resistor and a tenth resistor, the other end of the ninth resistor is connected with a pin 7 of the operational amplifier, and the other end of the tenth resistor is grounded; the 7 pin of the operational amplifier is also connected with an eleventh capacitor, the other end of the eleventh capacitor is connected with a tenth resistor, the other end of the tenth resistor is connected with the 1 pin of the operational amplifier, and the other end of the eleventh capacitor is also connected with the 3 pin of the operational amplifier;
the 2 pins of the operational amplifier are connected with an eleventh resistor, a twelfth resistor and a thirteenth resistor, and the other end of the eleventh resistor is connected with the 3 pins of the operational amplifier; the other end of the twelfth resistor is connected with the positive electrode of the power supply, and the other end of the thirteenth resistor is grounded; the 8 pins of the operational amplifier are connected with the anode of the power supply, and the 4 pins are grounded; and the 1 pin of the operational amplifier is a signal output end of the wireless transmitting unit.
The beneficial effects of the utility model reside in that: when the wireless receiving unit is used, the wireless transmitting unit transmits first radio waves for the external wireless receiving and transmitting module to receive, and meanwhile, the wireless receiving unit also receives second radio waves transmitted by the external wireless receiving and transmitting module;
the signal input end of the wireless transmitting unit receives a first control signal input by an external coding chip, and modulates and carries out carrier frequency on the first control signal through the cooperation of the surface acoustic filter, the three-pin inductor and the first triode, and carries out radio frequency transmission through the first antenna for receiving by an external wireless receiving and transmitting module;
the first antenna converts a first control signal input by the signal input end into a first radio wave and transmits the first radio wave to a free space; the first resistor and the diode are connected in parallel to limit and discharge the reverse electromotive force of the triode and the surface acoustic wave filter in a resistive manner so as to quickly reduce the voltage and play a role in protecting an external coding chip; the first capacitor and the second capacitor both play a role in filtering;
in the wireless receiving unit, the oscillating unit generates an oscillating electric signal with the same frequency as the second radio wave sent by the external wireless transceiving module; the frequency-selective amplifying unit receives the radio wave propagated in the free space, and when the frequency of the radio wave is close to or the same as that of the second radio wave, the frequency-selective amplifying unit amplifies the radio wave and outputs a second control signal while the second oscillating unit starts oscillating; when the frequency of the second control signal is the same as that of the oscillating electric signal, the comparison amplification unit outputs a digital electric signal to an external decoding chip for decoding according to the amplitude of the second control signal; wherein a frequency of the first radio wave is different from a frequency of the second radio wave; the circuit is simple, low in cost, small in size, convenient to use and wide in applicability.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention will be further described below with reference to the accompanying drawings and embodiments, wherein the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained without inventive work according to the drawings:
fig. 1 is a schematic circuit diagram of a wireless transmitting unit of a wireless transceiver module according to a preferred embodiment of the present invention;
fig. 2 is a schematic circuit diagram of a wireless receiving unit of a wireless transceiver module according to a preferred embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, a clear and complete description will be given below with reference to the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
The wireless transceiver module according to the preferred embodiment of the present invention is shown in fig. 1, and also refer to fig. 2; comprises a wireless transmitting unit 100 and a wireless receiving unit 200; the wireless transmitting unit 100 comprises a surface acoustic wave filter SAW, a three-pin inductor L1 and a first triode Q1, wherein a pin 1 of the three-pin inductor L1 is connected with the positive electrode of a power supply, a pin 2 is connected with the first end of the surface acoustic wave filter SAW, the second end of the surface acoustic wave filter SAW is connected with the base electrode of the first triode Q1, a pin 2 of the three-pin inductor L1 is further connected with a first capacitor C2, a pin 3 is connected with the collector electrode of the first triode Q1, and the other end of the first capacitor C2 is grounded;
the base electrode of the first triode Q1 is connected with a first resistor R1 and a diode D1, the anode of the diode D1 is connected with the base electrode of the first triode Q1, and the cathode of the diode D1 is connected with the other end of the first resistor R1; the other end of the first resistor R1 is a signal input end of the wireless transmitting unit 100;
the emitter of the first triode Q1 is grounded, the collector of the first triode Q1 is also connected with a second capacitor C1, and the other end of the second capacitor C1 is connected with a first antenna ANT; the first antenna ANT is used for converting a first control signal input by the signal input end into a first radio wave and transmitting the first radio wave into free space;
the wireless receiving unit 200 comprises a frequency selection amplifying unit 201, an oscillating unit 202 and a comparison amplifying unit 203, wherein the oscillating unit 202 is respectively connected with the frequency selection amplifying unit 201 and the comparison amplifying unit 203; the oscillation unit 202 is configured to generate an oscillating electrical signal having the same frequency as a second radio wave transmitted by an external wireless transceiver module (not shown); the frequency-selective amplifying unit 201 is configured to receive a radio wave propagating in a free space, and when the frequency of the radio wave is close to or the same as that of the second radio wave, the frequency-selective amplifying unit 201 amplifies the radio wave and outputs a second control signal while the second oscillating unit 202 starts oscillation; when the frequency of the second control signal is the same as the frequency of the oscillating electrical signal, the comparing and amplifying unit 203 outputs a digital electrical signal according to the amplitude of the second control signal; the frequency of the first radio wave is different from the frequency of the second radio wave to avoid frequency interference, for example: the first radio wave uses 315MHZ, the second radio wave uses 433 MHZ;
when in use, the wireless transmitting unit 100 transmits first radio waves for an external wireless transceiving module to receive, and the wireless receiving unit 200 also receives second radio waves transmitted by the external wireless transceiving module;
a signal input end of the wireless transmitting unit 100 receives a first control signal input by an external coding chip (not shown in the figure), and modulates and carries out carrier frequency on the first control signal through cooperation of a surface acoustic filter SAW, a three-pin inductor L1 and a first triode Q1, and carries out radio frequency transmission through a first antenna ANT for receiving by an external wireless transceiving module;
the first antenna ANT converts a first control signal input by a signal input end into a first radio wave and transmits the first radio wave to a free space; the first resistor R1 and the diode D1 are connected in parallel to limit and discharge the reverse electromotive force of the triode and the SAW (surface acoustic wave) filter in a resistive manner, so that the voltage is quickly reduced, and the external coding chip is protected; the first capacitor C2 and the second capacitor C1 both play a role of filtering;
in the wireless receiving unit 200, the oscillating unit 202 generates an oscillating electric signal having the same frequency as that of the second radio wave emitted from the external wireless transceiver module; the frequency-selective amplification unit 201 receives a radio wave propagating in a free space, and when the frequency of the radio wave is close to or the same as that of the second radio wave, the frequency-selective amplification unit 201 amplifies the radio wave and outputs a second control signal while the second oscillation unit 202 starts oscillation; when the frequency of the second control signal is the same as the frequency of the oscillating electrical signal, the comparing and amplifying unit 203 outputs the digital electrical signal to an external decoding chip (not shown) for decoding according to the magnitude of the amplitude of the second control signal; wherein a frequency of the first radio wave is different from a frequency of the second radio wave; the circuit is simple, low in cost, small in size, convenient to use and wide in applicability.
As shown in fig. 2, the frequency-selective amplifying unit 201 includes a first inductor L2, a third capacitor C12, and a second transistor Q11; a base electrode of the second triode Q11 is connected with a fourth capacitor C3, the other end of the fourth capacitor C3 is respectively connected with the first inductor L2 and the third capacitor C12, the other ends of the first inductor L2 and the third capacitor C12 are both grounded, the other end of the fourth capacitor C3 is also connected with a second antenna ANT2, and the second antenna ANT2 is used for receiving radio waves;
a collector of the second triode Q11 is connected with a second resistor R3, a base of the second triode Q11 is connected with a third resistor R2, the other end of the second resistor R3 is connected with a pull-up resistor R100, the other end of the pull-up resistor R100 is connected with the positive electrode of the power supply, and the other end of the third resistor R2 is connected with the other end of the second resistor R3; the collector of the second triode Q11 is connected with the oscillating unit 202; the frequency selection is carried out by using the matching of the inductor and the capacitor, and the frequency amplification is carried out by using the triode, so that the circuit is simple, the cost is low, and the size is small.
As shown in fig. 2, the collector of the second transistor Q11 is further connected to a fifth capacitor C4, and the other end of the fifth capacitor C4 is connected to a sixth capacitor C5 and a fourth resistor R4; the other end of the sixth capacitor C5 is connected to the oscillation unit 202, and the other end of the fourth resistor R4 is connected to the emitter of the second transistor Q11 and grounded; capacitors and resistors are used for coupling and filtering to meet the working requirements of the oscillating unit 202 and the comparison and amplification unit 203.
As shown in fig. 2, the oscillating unit 202 includes a third transistor Q2, a seventh capacitor C6, an eighth capacitor C7, and an adjustable inductor L2; the base electrode of the third triode Q2 is connected with the other end of the sixth capacitor C5, and the collector electrode of the third triode Q2 is respectively connected with the eighth capacitor C7, the adjustable inductor L2 and the fifth resistor R7; the other end of the fifth resistor R7 is connected with the anode of the power supply;
the other end of the adjustable inductor L2 is connected with the other end of the eighth capacitor C7 and is also connected with a seventh capacitor C6, the other end of the seventh capacitor C6 is connected with the base of a third triode Q2 and is also connected with a sixth resistor R5 and a seventh resistor R6, the other end of the sixth resistor R5 is connected with the anode of a power supply, and the other end of the seventh resistor R6 is grounded;
the collector of the third triode Q2 is also connected with a ninth capacitor C8, and the other end of the ninth capacitor C8 is connected with the emitter of the third triode Q2; the emitter of the third triode Q2 is further connected with a second inductor L3, and the other end of the second inductor L3 is connected with the other end of the fifth capacitor C4; the other end of the second inductor L3 is connected to the comparison and amplification unit 203; adjusting the resonant frequency of the oscillating unit 202 can be achieved by adjusting the adjustable inductance L2.
As shown in fig. 2, the comparison amplification unit 203 includes an operational amplifier IC1, a tenth capacitor C10, and an eighth resistor R8; a pin 5 of the operational amplifier IC1 is connected to a tenth capacitor C10, the other end of the tenth capacitor C10 is connected to an eighth resistor R8, and the other end of the eighth resistor R8 is connected to the other end of the second inductor L3; a pin 6 of the operational amplifier IC1 is connected with a ninth resistor R15 and a pull-down resistor R14, the other end of the ninth resistor R15 is connected with a pin 7 of the operational amplifier IC1, and the other end of the pull-down resistor R14 is grounded; an eleventh capacitor C12 is further connected to the pin 7 of the operational amplifier IC1, a tenth resistor R10 is connected to the other end of the eleventh capacitor C12, the other end of the tenth resistor R10 is connected to the pin 1 of the operational amplifier IC1, and the other end of the eleventh capacitor C12 is further connected to the pin 3 of the operational amplifier IC 1;
an eleventh resistor R13, a twelfth resistor R11 and a thirteenth resistor R12 are connected to a 2 pin of the operational amplifier IC1, and the other end of the eleventh resistor R13 is connected to a 3 pin of the operational amplifier IC 1; the other end of the twelfth resistor R11 is connected with the positive electrode of the power supply, and the other end of the thirteenth resistor R12 is grounded; an 8 pin of the operational amplifier IC1 is connected with the anode of the power supply and a 4 pin is grounded; a pin 1 of the operational amplifier IC1 is a signal output end of the wireless transmitting unit 100 and is connected with an input end of an external decoding chip; the operational amplifier IC1 is used for realizing analog-digital conversion, and the circuit is simple, low in cost and small in size; the operational amplifier IC1 is a dual-path operational amplifier.
It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are considered to be within the scope of the invention as defined by the following claims.
Claims (5)
1. A wireless transceiver module comprises a wireless receiving unit and a wireless transmitting unit; the wireless transmitting unit is characterized by comprising a surface acoustic wave filter, a three-pin inductor and a first triode, wherein pin 1 of the three-pin inductor is connected with the positive electrode of a power supply, pin 2 of the three-pin inductor is connected with the first end of the surface acoustic wave filter, the second end of the surface acoustic wave filter is connected with the base electrode of the first triode, pin 2 of the three-pin inductor is further connected with a first capacitor, pin 3 of the three-pin inductor is connected with the collector electrode of the first triode, and the other end of the first capacitor is grounded;
the base electrode of the first triode is connected with a first resistor and a diode, the anode of the diode is connected with the base electrode of the first triode, and the cathode of the diode is connected with the other end of the first resistor; the other end of the first resistor is a signal input end of the wireless transmitting unit;
the emitting electrode of the first triode is grounded, the collector electrode of the first triode is also connected with a second capacitor, and the other end of the second capacitor is connected with a first antenna; the first antenna is used for converting a first control signal input by the signal input end into a first radio wave and transmitting the first radio wave into free space;
the wireless receiving unit comprises a frequency selection amplifying unit, an oscillating unit and a comparison amplifying unit, wherein the oscillating unit is respectively connected with the frequency selection amplifying unit and the comparison amplifying unit; the oscillation unit is used for generating an oscillation electric signal with the same frequency as the second radio wave transmitted by the external wireless transceiving module; the frequency-selecting amplifying unit is used for receiving radio waves propagating in a free space, and when the frequency of the radio waves is close to or identical to that of the second radio waves, the frequency-selecting amplifying unit amplifies the radio waves and outputs a second control signal while the second oscillating unit starts oscillation; when the frequency of the second control signal is the same as that of the oscillating electric signal, the comparison amplification unit outputs a digital electric signal according to the amplitude of the second control signal; the frequency of the first radio wave is different from the frequency of the second radio wave.
2. The wireless transceiver module of claim 1, wherein the frequency-selective amplifier unit comprises a first inductor, a third capacitor, and a second transistor; a base electrode of the second triode is connected with a fourth capacitor, the other end of the fourth capacitor is respectively connected with the first inductor and the third capacitor, the other ends of the first inductor and the third capacitor are grounded, the other end of the fourth capacitor is also connected with a second antenna, and the second antenna is used for receiving the radio waves;
a collector of the second triode is connected with a second resistor, a base of the second triode is connected with a third resistor, the other end of the second resistor is connected with a pull-up resistor, the other end of the pull-up resistor is connected with the anode of the power supply, and the other end of the third resistor is connected with the other end of the second resistor;
and the collector of the second triode is connected with the oscillation unit.
3. The wireless transceiver module of claim 2, wherein a fifth capacitor is further connected to a collector of the second transistor, and a sixth capacitor and a fourth resistor are connected to the other end of the fifth capacitor; the other end of the sixth capacitor is connected with the oscillation unit, and the other end of the fourth resistor is connected with the emitting electrode of the second triode and grounded.
4. The wireless transceiver module of claim 3, wherein the oscillating unit comprises a third transistor, a seventh capacitor, an eighth capacitor, and an adjustable inductor; a base electrode of the third triode is connected with the other end of the sixth capacitor, and a collector electrode of the third triode is respectively connected with the eighth capacitor, the adjustable inductor and the fifth resistor; the other end of the fifth resistor is connected with the positive electrode of the power supply;
the other end of the adjustable inductor is connected with the other end of the eighth capacitor and also connected with the seventh capacitor, the other end of the seventh capacitor is connected with the base electrode of the third triode and also connected with a sixth resistor and a seventh resistor, the other end of the sixth resistor is connected with the anode of the power supply, and the other end of the seventh resistor is grounded;
the collector of the third triode is also connected with a ninth capacitor, and the other end of the ninth capacitor is connected with the emitter of the third triode; the emitter of the third triode is also connected with a second inductor, and the other end of the second inductor is connected with the other end of the fifth capacitor; the other end of the second inductor is connected with the comparison amplification unit.
5. The wireless transceiver module of claim 4, wherein the comparing and amplifying unit comprises an operational amplifier, a tenth capacitor and an eighth resistor; a pin 5 of the operational amplifier is connected with the tenth capacitor, the other end of the tenth capacitor is connected with the eighth resistor, and the other end of the eighth resistor is connected with the other end of the second inductor; a pin 6 of the operational amplifier is connected with a ninth resistor and a tenth resistor, the other end of the ninth resistor is connected with a pin 7 of the operational amplifier, and the other end of the tenth resistor is grounded; the 7 pin of the operational amplifier is also connected with an eleventh capacitor, the other end of the eleventh capacitor is connected with a tenth resistor, the other end of the tenth resistor is connected with the 1 pin of the operational amplifier, and the other end of the eleventh capacitor is also connected with the 3 pin of the operational amplifier;
the 2 pins of the operational amplifier are connected with an eleventh resistor, a twelfth resistor and a thirteenth resistor, and the other end of the eleventh resistor is connected with the 3 pins of the operational amplifier; the other end of the twelfth resistor is connected with the positive electrode of the power supply, and the other end of the thirteenth resistor is grounded; the 8 pins of the operational amplifier are connected with the anode of the power supply, and the 4 pins are grounded; and the 1 pin of the operational amplifier is a signal output end of the wireless transmitting unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021897239.0U CN212727015U (en) | 2020-09-03 | 2020-09-03 | Wireless transceiver module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021897239.0U CN212727015U (en) | 2020-09-03 | 2020-09-03 | Wireless transceiver module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212727015U true CN212727015U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021897239.0U Active CN212727015U (en) | 2020-09-03 | 2020-09-03 | Wireless transceiver module |
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| Country | Link |
|---|---|
| CN (1) | CN212727015U (en) |
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2020
- 2020-09-03 CN CN202021897239.0U patent/CN212727015U/en active Active
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