CN104615559A - Signal generating circuit of high-speed short-distance communication USB (Universal Serial Bus) technology - Google Patents
Signal generating circuit of high-speed short-distance communication USB (Universal Serial Bus) technology Download PDFInfo
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- CN104615559A CN104615559A CN201310541428.2A CN201310541428A CN104615559A CN 104615559 A CN104615559 A CN 104615559A CN 201310541428 A CN201310541428 A CN 201310541428A CN 104615559 A CN104615559 A CN 104615559A
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- resistance
- triode
- electric capacity
- ground connection
- usb
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
- G06F13/38—Information transfer, e.g. on bus
- G06F13/382—Information transfer, e.g. on bus using universal interface adapter
- G06F13/387—Information transfer, e.g. on bus using universal interface adapter for adaptation of different data processing systems to different peripheral devices, e.g. protocol converters for incompatible systems, open system
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- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Dc Digital Transmission (AREA)
Abstract
The invention discloses a signal generating circuit of a high-speed short-distance communication USB (Universal Serial Bus) technology. The signal generating circuit comprises a first resistor to a fourteenth resistor, a first capacitor to a sixth capacitor, a first triode, a second triode, a third triode and a crystal filter, wherein the first end of the sixth capacitor is taken as a DSB signal input end; the second end of the sixth capacitor is connected with the first end of the second resistor, the base electrode of the first triode and the first end of the third resistor respectively; and the second end of the third resistor is grounded. According to the signal generating circuit of the high-speed short-distance communication USB technology, a DSB signal of 10.70MHz is input at the input end, and a USB signal of 10.7MHz is output after the DSB signal is converted and processed by the circuit. The first triode is taken as an emitter follower; the second triode is taken as a common emitting electrode amplifier; and the third triode is taken as a buffering output stage. Through use of the circuit, a USB can output stable signals. The circuit is simple in structure, and has popularization and use values.
Description
Technical field
The present invention relates to a kind of signal generating circuit, particularly relate to a kind of signal generating circuit of high speed short distance communication USB technology.
Background technology
USB is English Universal Serial Bus(USB (universal serial bus)) abbreviation, it is an external bus standard, for connection and the communication of specification computer and external unit, be the interfacing being applied in PC field, the plug and play of USB interface support equipment and warm connection function.In fact except picture this needs of video card high data volume and the extra high opertaing device of some requirement of real-times, nearly all PC peripheral hardware can be transplanted to USB on, so the stablizing and be very important lastingly of usb signal.
Summary of the invention
Object of the present invention is just the signal generating circuit providing a kind of high speed short distance communication USB technology in order to solve the problem.
The present invention is achieved through the following technical solutions above-mentioned purpose:
A kind of signal generating circuit of high speed short distance communication USB technology, comprise the first resistance to the 14 resistance, first electric capacity is to the 6th electric capacity, first triode, second triode, 3rd triode and crystal filter, the first end of described 6th electric capacity is DSB signal input part, second end of described 6th electric capacity respectively with the first end of described second resistance, the base stage of described first triode, the first end of described 3rd resistance connects, second end ground connection of described 3rd resistance, second end of described second resistance respectively with the collector of described first triode, the first end of described first electric capacity is connected with the first end of described first resistance, second end ground connection of described first electric capacity, second termination positive voltage of described first resistance, the emitter of described first triode is connected with the first end of described 4th resistance and the first end of described second electric capacity respectively, second end ground connection of described 4th resistance, second end of described second electric capacity is connected with the first end of described 5th resistance, second end of described 5th resistance is connected with the input end of described crystal filter, second end ground connection of described crystal filter, the output terminal of described crystal filter respectively with the first end of described 4th electric capacity, the first end of described 9th resistance is connected with the first end of described 3rd electric capacity, second end ground connection of described 3rd electric capacity, second end ground connection of described 9th resistance, second end of described 4th electric capacity respectively with the base stage of described second triode, the first end of described 6th resistance is connected with the first end of described tenth resistance, second end ground connection of described tenth resistance, second end of described 6th resistance respectively with the first end of described 7th resistance, the collector of described 3rd triode, the first end of described 5th electric capacity is connected with the first end of described 8th resistance, second end ground connection of described 5th electric capacity, second termination positive voltage of described 8th resistance, second end of described 7th resistance is connected with the base stage of described 3rd triode and the collector of described second triode respectively, the emitter of described second triode is connected with the first end of described 11 resistance and the first end of described 6th electric capacity respectively, second end of described 6th electric capacity is connected with the first end of described 12 resistance, second end ground connection of described 11 resistance, secondth end ground connection of described 12 resistance, the emitter of described 3rd triode is connected with the first end of described 14 resistance and the first end of described 13 resistance respectively, second end ground connection of described 13 resistance, second end of described 14 resistance is usb signal output terminal.
Beneficial effect of the present invention is:
The signal generating circuit of high speed short distance communication USB technology of the present invention inputs the DSB signal of 10.70MHz at input end, after the conversion and process of this circuit, export the usb signal for 10.7MHz, wherein the first triode is emitter follower, second triode is cascode level amplifier, and the 3rd triode is Buffer output level, uses this circuit can make the signal of USB stable output, this circuit structure is simple, has the value promoted the use of.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of the signal generating circuit of high speed short distance communication USB technology of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described:
As shown in Figure 1, the signal generating circuit of high speed short distance communication USB technology of the present invention, comprise the first resistance R1 to the 14 resistance R14, first electric capacity C1 is to the 6th electric capacity C6, first triode T1, second triode T2, 3rd triode T3 and crystal filter IC, the first end of the 6th electric capacity C6 is DSB signal input part, second end of the 6th electric capacity C6 respectively with the first end of the second resistance R2, the base stage of the first triode T1, the first end of the 3rd resistance R3 connects, the second end ground connection of the 3rd resistance R3, second end of the second resistance R2 respectively with the collector of the first triode T1, the first end of the first electric capacity C1 is connected with the first end of the first resistance R1, the second end ground connection of the first electric capacity C1, the second termination positive voltage of the first resistance R1, the emitter of the first triode T1 is connected with the first end of the 4th resistance R4 and the first end of the second electric capacity C2 respectively, the second end ground connection of the 4th resistance R4, second end of the second electric capacity C2 is connected with the first end of the 5th resistance R5, second end of the 5th resistance R5 is connected with the input end of crystal filter IC, the second end ground connection of crystal filter IC, the output terminal of crystal filter IC respectively with the first end of the 4th electric capacity C4, the first end of the 9th resistance R9 is connected with the first end of the 3rd electric capacity C3, the second end ground connection of the 3rd electric capacity C3, the second end ground connection of the 9th resistance R9, second end of the 4th electric capacity C4 respectively with the base stage of the second triode T2, the first end of the 6th resistance R6 is connected with the first end of the tenth resistance R10, the second end ground connection of the tenth resistance R10, second end of the 6th resistance R6 respectively with the first end of the 7th resistance R7, the collector of the 3rd triode T3, the first end of the 5th electric capacity C5 is connected with the first end of the 8th resistance R8, the second end ground connection of the 5th electric capacity C5, the second termination positive voltage of the 8th resistance R8, second end of the 7th resistance R7 is connected with the base stage of the 3rd triode T3 and the collector of the second triode T2 respectively, the emitter of the second triode T2 is connected with the first end of the 11 resistance R11 and the first end of the 6th electric capacity C6 respectively, second end of the 6th electric capacity C6 is connected with the first end of the 12 resistance R12, the second end ground connection of the 11 resistance R11, the secondth end ground connection of the 12 resistance R12, the emitter of the 3rd triode T3 is connected with the first end of the 14 resistance R14 and the first end of the 13 resistance R13 respectively, the second end ground connection of the 13 resistance R13, second end of the 14 resistance R14 is usb signal output terminal.
The principle of work of the signal generating circuit of high speed short distance communication USB technology of the present invention is as follows:
This signal generating circuit is at the DSB signal of input end input 10.70MHz, after the conversion and process of this circuit, export the usb signal for 10.7MHz, wherein the first triode T1 is emitter follower, second triode T2 is cascode level amplifier, 3rd triode T3 is Buffer output level, uses this circuit can make the signal of USB stable output.
Claims (1)
1. the signal generating circuit of a high speed short distance communication USB technology, it is characterized in that: comprise the first resistance to the 14 resistance, first electric capacity is to the 6th electric capacity, first triode, second triode, 3rd triode and crystal filter, the first end of described 6th electric capacity is DSB signal input part, second end of described 6th electric capacity respectively with the first end of described second resistance, the base stage of described first triode, the first end of described 3rd resistance connects, second end ground connection of described 3rd resistance, second end of described second resistance respectively with the collector of described first triode, the first end of described first electric capacity is connected with the first end of described first resistance, second end ground connection of described first electric capacity, second termination positive voltage of described first resistance, the emitter of described first triode is connected with the first end of described 4th resistance and the first end of described second electric capacity respectively, second end ground connection of described 4th resistance, second end of described second electric capacity is connected with the first end of described 5th resistance, second end of described 5th resistance is connected with the input end of described crystal filter, second end ground connection of described crystal filter, the output terminal of described crystal filter respectively with the first end of described 4th electric capacity, the first end of described 9th resistance is connected with the first end of described 3rd electric capacity, second end ground connection of described 3rd electric capacity, second end ground connection of described 9th resistance, second end of described 4th electric capacity respectively with the base stage of described second triode, the first end of described 6th resistance is connected with the first end of described tenth resistance, second end ground connection of described tenth resistance, second end of described 6th resistance respectively with the first end of described 7th resistance, the collector of described 3rd triode, the first end of described 5th electric capacity is connected with the first end of described 8th resistance, second end ground connection of described 5th electric capacity, second termination positive voltage of described 8th resistance, second end of described 7th resistance is connected with the base stage of described 3rd triode and the collector of described second triode respectively, the emitter of described second triode is connected with the first end of described 11 resistance and the first end of described 6th electric capacity respectively, second end of described 6th electric capacity is connected with the first end of described 12 resistance, second end ground connection of described 11 resistance, secondth end ground connection of described 12 resistance, the emitter of described 3rd triode is connected with the first end of described 14 resistance and the first end of described 13 resistance respectively, second end ground connection of described 13 resistance, second end of described 14 resistance is usb signal output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541428.2A CN104615559A (en) | 2013-11-05 | 2013-11-05 | Signal generating circuit of high-speed short-distance communication USB (Universal Serial Bus) technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310541428.2A CN104615559A (en) | 2013-11-05 | 2013-11-05 | Signal generating circuit of high-speed short-distance communication USB (Universal Serial Bus) technology |
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| Publication Number | Publication Date |
|---|---|
| CN104615559A true CN104615559A (en) | 2015-05-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310541428.2A Pending CN104615559A (en) | 2013-11-05 | 2013-11-05 | Signal generating circuit of high-speed short-distance communication USB (Universal Serial Bus) technology |
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| CN (1) | CN104615559A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492287A (en) * | 2017-10-16 | 2017-12-19 | 重庆师范大学 | Mute speaks instrument |
-
2013
- 2013-11-05 CN CN201310541428.2A patent/CN104615559A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107492287A (en) * | 2017-10-16 | 2017-12-19 | 重庆师范大学 | Mute speaks instrument |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150513 |
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| WD01 | Invention patent application deemed withdrawn after publication |