CN206876886U - A kind of Big Dipper satellite signal receives display circuit - Google Patents
A kind of Big Dipper satellite signal receives display circuit Download PDFInfo
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- CN206876886U CN206876886U CN201720378489.5U CN201720378489U CN206876886U CN 206876886 U CN206876886 U CN 206876886U CN 201720378489 U CN201720378489 U CN 201720378489U CN 206876886 U CN206876886 U CN 206876886U
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Abstract
The utility model provides a kind of Big Dipper satellite signal and receives display circuit, including antenna, rf signal amplification circuit, the first filter circuit and signaling conversion circuit.The antenna, rf signal amplification circuit, the first filter circuit and signaling conversion circuit are sequentially connected electrically.Big Dipper satellite signal is received by antenna and the Big Dipper satellite signal is sent to rf signal amplification circuit, then Big Dipper satellite signal is amplified and is sent to first filter circuit by rf signal amplification circuit, first filter circuit is filtered to the Big Dipper satellite signal and filtered Big Dipper satellite signal is sent into signaling conversion circuit, filtered Big Dipper satellite signal is converted to data signal and the data signal after conversion is sent to the processor of mobile terminal by signaling conversion circuit, the information entrained by Big Dipper satellite signal is shown by the display screen of mobile terminal.The utility model can improve the transmission stability of Big Dipper satellite signal, and make the fidelity after signal amplification higher.
Description
Technical field
Satellite equipment field is the utility model is related to, display circuit is received in particular to a kind of Big Dipper satellite signal.
Background technology
The applicable satellite navigation system in China includes GPS satellite navigation system and Beidou satellite navigation system at present.GPS
System has the advantages that real-time is good, accuracy is high, but shortcoming is that GPS can only receive gps signal, lacks the friendship of information
Mutual property.The Beidou satellite system of China's independent research can realize that function, the user terminal such as positioning and communication can be by certain frequency
Positioning or communication request are sent, so as to obtain location information, and is communicated with other-end.Existing Beidou navigation equipment pair
In Big Dipper satellite signal amplification and transmission on it is poor there is signal quality the drawbacks of.
Utility model content
In view of this, the purpose of the utility model embodiment is that providing a kind of Big Dipper satellite signal receives display circuit,
To improve the problem of above-mentioned.
To achieve the above object, the technical scheme that the utility model embodiment uses is as described below：
A kind of Big Dipper satellite signal receives display circuit, and applied to mobile terminal, the mobile terminal includes display screen, institute
Stating Big Dipper satellite signal reception display circuit includes antenna, rf signal amplification circuit, the first filter circuit and signal conversion electricity
Road, the antenna, rf signal amplification circuit, the first filter circuit and signaling conversion circuit are sequentially connected electrically, the antenna quilt
It is configured to receive Big Dipper satellite signal and the Big Dipper satellite signal is sent to the rf signal amplification circuit, the radio frequency
Signal amplification circuit is configured as being amplified the Big Dipper satellite signal and be sent to first filter circuit, and described
One filter circuit is configured as being filtered the Big Dipper satellite signal and filtered Big Dipper satellite signal is sent into institute
Signaling conversion circuit is stated, the signaling conversion circuit is configured as filtered Big Dipper satellite signal being converted to data signal simultaneously
Data signal after conversion is sent to the processor of the mobile terminal, in order to which the mobile terminal passes through the display screen
Show the information entrained by the Big Dipper satellite signal.
Further, the rf signal amplification circuit includes radio frequency front end chip, first resistor, the first inductance, first
Electric capacity and the second electric capacity, the signal input pin of the radio frequency front end chip are connected with the antenna, the radio frequency front end chip
Switch conducts current pin be connected by first resistor with the supply voltage pin of the radio frequency front end chip, before the radio frequency
The switch conducts current pin of chip is held to draw simultaneously by second capacity earth, the supply voltage of the radio frequency front end chip
Pin by first capacity earth, the low noise amplification input pin of the radio frequency front end chip by first inductance with
Filter output pin connection.
Further, the resistance value of the first resistor is 4700 Ω, and the inductance value of first inductance is 2.2nH, institute
The capacitance for stating the first electric capacity is 1nF, and the capacitance of second electric capacity is 100pF.
Further, first filter circuit includes the 3rd electric capacity, the 4th electric capacity and the second inductance, the 3rd electric capacity
One end be connected with the rf signal amplification circuit, the other end of the 3rd electric capacity passes through second inductance and the letter
The electrical connection of number change-over circuit, the other end of the 3rd electric capacity pass through the 4th capacity earth.
Further, the capacitance of the 3rd electric capacity is 47pF, and the capacitance of the 4th electric capacity is 2.7pF.
Further, the signaling conversion circuit includes modulus conversion chip, the second filter circuit, oscillating circuit, crystal
Oscillator, second filter circuit include the 5th electric capacity, the 6th electric capacity and the 3rd inductance, the power supply of the modulus conversion chip
Pin is connected with a power supply, and the power pins of the modulus conversion chip are simultaneously by the 5th capacity earth, and the described 3rd
One end of inductance is connected with the power supply, the other end of the 3rd inductance and the radio frequency output pin of the modulus conversion chip
Connection, the radio frequency output pin of the modulus conversion chip are included by the 6th capacity earth, the oscillating circuit simultaneously
One crystal oscillator chip and the 7th electric capacity, the power pins of the crystal oscillator chip pass through the 7th capacity earth, the analog-to-digital conversion
Oscillating circuit input pin is connected with the output pin of the crystal oscillator chip in the piece of chip, in the piece of the modulus conversion chip
Oscillating circuit output pin passes through the 7th capacity earth, one end of the crystal oscillator and the modulus conversion chip
Clock input pin is connected, and the other end of the crystal oscillator is connected with the clock out pin of the modulus conversion chip.
Further, the capacitance of the 5th electric capacity is 1 μ F, and the capacitance of the 6th electric capacity is 1 μ F, the described 3rd
The inductance value of inductance is 33nH, and the capacitance of the 7th electric capacity is 1 μ F, and the frequency of oscillation of the crystal oscillator is
32.768kHz。
Further, the signaling conversion circuit also includes the 8th electric capacity and the 9th electric capacity, the modulus conversion chip
Processor voltage pin and voltage output pin pass through the 8th capacity earth, the control source of the modulus conversion chip
Pin and input/output interface supply voltage pin pass through the 9th capacity earth.
Further, the capacitance of the 8th electric capacity and the 9th electric capacity is 1 μ F.
Further, the Big Dipper satellite signal receiving circuit also includes rectification circuit, mu balanced circuit, data signal storage
Circuit and data transmission circuit, the rectification circuit are used to provide stable operating current, and the mu balanced circuit is used to provide surely
Fixed operating voltage, the data signal storage circuit are used to store the data signal after conversion, and the data transmission circuit is used
In transmission data.
Big Dipper satellite signal provided by the utility model, which receives display circuit, includes antenna, rf signal amplification circuit, the
One filter circuit and signaling conversion circuit.The antenna, rf signal amplification circuit, the first filter circuit and signaling conversion circuit
It is sequentially connected electrically.Big Dipper satellite signal is received by antenna and the Big Dipper satellite signal is sent to radiofrequency signal amplification electricity
Road, then rf signal amplification circuit Big Dipper satellite signal is amplified and is sent to first filter circuit, first filter
Wave circuit is filtered to the Big Dipper satellite signal and filtered Big Dipper satellite signal is sent into signaling conversion circuit, letter
Filtered Big Dipper satellite signal is converted to data signal and the data signal after conversion is sent into movement by number change-over circuit
The processor of terminal, the information entrained by Big Dipper satellite signal is shown by the display screen of mobile terminal.The utility model can
The transmission stability of Big Dipper satellite signal is improved, and makes the fidelity after signal amplification higher.
To enable above-mentioned purpose of the present utility model, feature and advantage to become apparent, preferred embodiment cited below particularly, and
Accompanying drawing appended by cooperation, is described in detail below.
Brief description of the drawings
, below will be to required use in embodiment in order to illustrate more clearly of the technical scheme of the utility model embodiment
Accompanying drawing be briefly described, it will be appreciated that the following drawings illustrate only some embodiments of the present utility model, therefore should not be by
Regard the restriction to scope as, for those of ordinary skill in the art, on the premise of not paying creative work, may be used also
To obtain other related accompanying drawings according to these accompanying drawings.
Fig. 1 is the schematic diagram that the Big Dipper satellite signal that the utility model preferred embodiment provides receives display circuit.
Fig. 2 is showing for the rectification circuit that the Big Dipper satellite signal that the utility model preferred embodiment provides receives display circuit
It is intended to.
Fig. 3 is showing for the mu balanced circuit that the Big Dipper satellite signal that the utility model preferred embodiment provides receives display circuit
It is intended to.
Fig. 4 is the data signal storage that the Big Dipper satellite signal that the utility model preferred embodiment provides receives display circuit
The schematic diagram of circuit.
Fig. 5 is the data transmission circuit that the Big Dipper satellite signal that the utility model preferred embodiment provides receives display circuit
Schematic diagram.
Embodiment
It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer
Accompanying drawing in type embodiment, the technical scheme in the embodiment of the utility model is clearly and completely described, it is clear that is retouched
The embodiment stated is the utility model part of the embodiment, rather than whole embodiments.Generally here described in accompanying drawing and
The component of the utility model embodiment shown can be configured to arrange and design with a variety of.
Therefore, the detailed description of the embodiment of the present utility model to providing in the accompanying drawings is not intended to limit requirement below
The scope of the utility model of protection, but it is merely representative of selected embodiment of the present utility model.Based in the utility model
Embodiment, the every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, all
Belong to the scope of the utility model protection.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
Fig. 1 is refer to, is that the Big Dipper satellite signal that the utility model embodiment provides receives the signal of display circuit 100
Figure.The Big Dipper satellite signal receives display circuit 100 and is applied to mobile terminal, and mobile terminal includes display screen, big-dipper satellite letter
Number reception display circuit 100 is used to receiving Big Dipper satellite signal, and by the display screen of mobile terminal by Big Dipper satellite signal
Including presentation of information come out.The Big Dipper satellite signal receive display circuit 100 include antenna RF, rf signal amplification circuit,
First filter circuit and signaling conversion circuit.
Wherein, the antenna RF is used to receive Big Dipper satellite signal, and the signal received is sent to radiofrequency signal and put
Big circuit, Big Dipper satellite signal is amplified by rf signal amplification circuit.Specifically, in the present embodiment, radio frequency letter
Number amplifying circuit includes radio frequency front end chip, first resistor R1, the first inductance H1, the first electric capacity C1 and the second electric capacity C2.It is preferred that
, in the rf signal amplification circuit that the present embodiment provides, first resistor R1 resistance value is 4700 Ω, the inductance of the first inductance
It is worth for 2.2nH, the capacitance of the first electric capacity is 1nF, and the capacitance of the second electric capacity is 100PF, to meet to design needs.This implementation
The model SKY65709-81 for the radio frequency front end chip that example uses, it is understandable, in other embodiments, it can also use
Other same or like chips are replaced with the chip functions.The signal input pin RF_IN of radio frequency front end chip and institute
State antenna RF connection.The switch conducts current pin VEN of radio frequency front end chip passes through first resistor R1 and radio frequency front end chip
The VDD connections of supply voltage pin.Meanwhile the switch conducts current pin VEN of radio frequency front end chip is grounded by the second electric capacity C2.
The supply voltage pin VDD of radio frequency front end chip is grounded by the first electric capacity C1, the low noise amplification of radio frequency front end chip
Input pin LNA_IN is connected by the first inductance H1 with filtering output pin FILT_O Μ T.Rf signal amplification circuit
The signal after amplification is sent to first filter circuit after signal is amplified.
First filter circuit is used to be filtered the Big Dipper satellite signal after amplification, specifically, the first filter circuit bag
Include the 3rd electric capacity C3, the 4th electric capacity C4 and the second inductance H2.In the present embodiment, the capacitance of the 3rd electric capacity is 47pF, the 4th
The capacitance of electric capacity is 2.7pF.Signal output pin RF_O Μ T in 3rd electric capacity C3 one end and rf signal amplification circuit
Connection, the 3rd electric capacity C3 other end are electrically connected by the second inductance H2 with signaling conversion circuit, the 3rd electric capacity C3 other end
It is grounded by the 4th electric capacity C4.After the filtering of first filter circuit, filtered Big Dipper satellite signal is sent to signal conversion
Circuit, to carry out signal conversion to Big Dipper satellite signal, data signal is converted analog signals into, in order to the place of mobile terminal
Device identification is managed, and is shown the information carried in data signal by display screen.
Specifically, in the present embodiment, signaling conversion circuit includes modulus conversion chip, the second filter circuit, vibration electricity
Road, crystal oscillator Y2.Second filter circuit includes the 5th electric capacity C5, the 6th electric capacity C6 and the 3rd inductance H3.Second filtered electrical
Road is used to further filter the filtered signal of the first filter circuit.The power pins VDD_LNA of modulus conversion chip with
One power supply V1 connections, the power pins VDD_LNA of the modulus conversion chip are grounded by the 5th electric capacity C5 simultaneously, and the described 3rd
Inductance H3 one end is connected with the power supply V1, and the radio frequency of the other end and the modulus conversion chip of the 3rd inductance H3 is defeated
Go out pin LDO_RF_O Μ T connections, the radio frequency output pin LDO_RF_O Μ T of the modulus conversion chip pass through described the simultaneously
Six electric capacity C6 are grounded.
Oscillating circuit is used to produce CLK ripples, and the oscillating circuit includes a crystal oscillator chip Y1 and the 7th electric capacity C7.The crystal oscillator
Chip Y1 power pins VDD is grounded by the 7th electric capacity C7.Oscillating circuit inputs in the piece of the modulus conversion chip
Pin XTAL_I is connected with the output pin O Μ T of the crystal oscillator chip Y1.Oscillating circuit in the piece of the modulus conversion chip
Output pin LDO_RF_P Μ T are grounded by the 7th electric capacity C7.
The crystal oscillator Y2 is used to produce clock frequency.Crystal oscillator Y2 one end and the analog-to-digital conversion core
The clock input pin RTC_I connections of piece, the clock of the other end and the modulus conversion chip of the crystal oscillator Y2 are defeated
Go out pin RTC_O connections.The signaling conversion circuit also includes the 8th electric capacity C8 and the 9th electric capacity C9.The modulus conversion chip
Processor voltage pin V_CORE and voltage output pin VDCDC_O Μ T is grounded by the 8th electric capacity C8, the mould
The voltage input pin V_DCDC_IN and input/output interface VDD_IO supply voltages pin of number conversion chip are by described
9th electric capacity C9 is grounded.
In the present embodiment, the 5th electric capacity C5 capacitance is 1 μ F, and the 6th electric capacity C6 capacitance is 1 μ F, the 3rd inductance
H3 inductance value is 33nH, and the 7th electric capacity C7 capacitance is 1 μ F, and crystal oscillator Y2 frequency of oscillation is 32.768kHz,
The capacitance of 8th electric capacity and the 9th electric capacity is 1 μ F.
Fig. 2 is refer to, preferably, Big Dipper satellite signal receiving circuit 100 also includes rectification circuit, the rectification circuit
For providing stable operating current, the rectification circuit includes diode D1, second resistance R2 and battery Μ, two pole
Pipe D1 positive pole is connected with the power supply of a 3.3V, and the negative pole of the diode D1 is connected by a second resistance R2 and power supply VBATT
Connect, diode D1 negative pole is connected with the positive pole of the battery Μ simultaneously, the negative pole ground connection of the battery Μ.
Fig. 3 is refer to, preferably, Big Dipper satellite signal receiving circuit 100 also includes mu balanced circuit, the voltage stabilizing electricity
Road is used to provide stable operating voltage, and the mu balanced circuit includes the tenth electric capacity C10, the 11st electric capacity C11, the 12nd electric capacity
C12, the 13rd electric capacity C13, the 14th electric capacity C14 and a voltage stabilizing chip, the preferred model TPS79330 of the voltage stabilizing chip.Its
In, the voltage input pin VIN of voltage stabilizing chip is connected with a power supply VB Μ S and respectively by the electricity of the tenth electric capacity C10 and the 11st
Hold C11 ground connection.Voltage after the voltage output pin output voltage stabilizing of voltage stabilizing chip, and pass through the 12nd electric capacity C12, the tenth respectively
Three electric capacity C13, the 14th electric capacity C14 are grounded.In the present embodiment, the voltage of voltage stabilizing chip output is 3.3V, the tenth electric capacity C10
Capacitance be 1 μ F, the 11st electric capacity C11 capacitance is 100nF, the 12nd electric capacity C12 capacitance is 100nF, the tenth
Three electric capacity C13 capacitance is 1 μ F, the 14th electric capacity C14 capacitance is 10pF.
Fig. 4 is refer to, the Big Dipper satellite signal receiving circuit 100 that the utility model embodiment provides also includes data signal
Storage circuit, for storing the data signal after changing.The data signal storage circuit includes a FLASH memory, the FLASH
The model W25X32 of memory.
Fig. 5 is refer to, the Big Dipper satellite signal receiving circuit 100 that the utility model embodiment provides also includes data transfer
Circuit (Μ SB connectors), for transmitting data.The data transmission circuit includes two pieces of plug connectors respectively with five sockets,
Because data transmission circuit is relatively conventional, no longer its attachment structure is specifically described herein.
In summary, the Big Dipper satellite signal that the utility model embodiment provides, which receives display circuit, includes antenna, radio frequency
Signal amplification circuit, the first filter circuit and signaling conversion circuit.The antenna, rf signal amplification circuit, the first filtered electrical
Road and signaling conversion circuit are sequentially connected electrically.Big Dipper satellite signal is received by antenna and is sent to the Big Dipper satellite signal
Rf signal amplification circuit, then rf signal amplification circuit by Big Dipper satellite signal be amplified and be sent to it is described first filter
Wave circuit, the first filter circuit are filtered to the Big Dipper satellite signal and filtered Big Dipper satellite signal are sent into letter
Filtered Big Dipper satellite signal is converted to data signal and believes the numeral after conversion by number change-over circuit, signaling conversion circuit
The processor of mobile terminal number is sent to, the display screen for passing through mobile terminal shows information entrained by Big Dipper satellite signal.This
Utility model can improve the transmission stability of Big Dipper satellite signal, and make the fidelity after signal amplification higher.
, it is necessary to which explanation, term " first ", " second ", " the 3rd " etc. are only used for area in description of the present utility model
Divide description, and it is not intended that instruction or hint relative importance.
In description of the present utility model, it is also necessary to which explanation, unless otherwise clearly defined and limited, term " are set
Put ", " installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected,
Or it is integrally connected；Can be mechanical connection or electrical connection；Can be joined directly together, intermediary can also be passed through
It is indirectly connected, can is the connection of two element internals.For the ordinary skill in the art, can be managed with concrete condition
Solve concrete meaning of the above-mentioned term in the utility model.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.It should be noted that
Arrive：Similar label and letter represents similar terms in following accompanying drawing, therefore, once determined in a certain Xiang Yi accompanying drawing
Justice, then it further need not be defined and explained in subsequent accompanying drawing.
Claims (10)
1. a kind of Big Dipper satellite signal receives display circuit, applied to mobile terminal, the mobile terminal includes display screen, and it is special
Sign is that the Big Dipper satellite signal, which receives display circuit, includes antenna, rf signal amplification circuit, the first filter circuit and letter
Number change-over circuit, the antenna, rf signal amplification circuit, the first filter circuit and signaling conversion circuit are sequentially connected electrically, institute
Antenna is stated to be configured as receiving Big Dipper satellite signal and the Big Dipper satellite signal is sent into the rf signal amplification circuit,
The rf signal amplification circuit is configured as that the Big Dipper satellite signal is amplified to and is sent to first filtered electrical
Road, first filter circuit are configured as being filtered the Big Dipper satellite signal and by filtered Big Dipper satellite signals
The signaling conversion circuit is sent to, the signaling conversion circuit is configured as filtered Big Dipper satellite signal being converted to number
Word signal and the processor that the data signal after conversion is sent to the mobile terminal, in order to which the mobile terminal passes through institute
State display screen and show information entrained by the Big Dipper satellite signal.
2. Big Dipper satellite signal according to claim 1 receives display circuit, it is characterised in that the radiofrequency signal amplification
Circuit includes radio frequency front end chip, first resistor, the first inductance, the first electric capacity and the second electric capacity, the radio frequency front end chip
Signal input pin is connected with the antenna, and the switch conducts current pin of the radio frequency front end chip passes through first resistor and institute
The supply voltage pin connection of radio frequency front end chip is stated, the switch conducts current pin of the radio frequency front end chip passes through institute simultaneously
State the second capacity earth, the supply voltage pin of the radio frequency front end chip is by first capacity earth, before the radio frequency
The low noise amplification input pin of chip is held to be connected by first inductance with filtering output pin.
3. Big Dipper satellite signal according to claim 2 receives display circuit, it is characterised in that the electricity of the first resistor
Resistance is 4700 Ω, and the inductance value of first inductance is 2.2nH, and the capacitance of first electric capacity is 1nF, second electricity
The capacitance of appearance is 100pF.
4. Big Dipper satellite signal according to claim 1 receives display circuit, it is characterised in that first filter circuit
Including the 3rd electric capacity, the 4th electric capacity and the second inductance, one end of the 3rd electric capacity is connected with the rf signal amplification circuit,
The other end of 3rd electric capacity is electrically connected by second inductance with the signaling conversion circuit, the 3rd electric capacity it is another
One end passes through the 4th capacity earth.
5. Big Dipper satellite signal according to claim 4 receives display circuit, it is characterised in that the electricity of the 3rd electric capacity
Capacitance is 47pF, and the capacitance of the 4th electric capacity is 2.7pF.
6. Big Dipper satellite signal according to claim 1 receives display circuit, it is characterised in that the signaling conversion circuit
Including modulus conversion chip, the second filter circuit, oscillating circuit, crystal oscillator, second filter circuit includes the 5th electricity
Hold, the 6th electric capacity and the 3rd inductance, the power pins of the modulus conversion chip are connected with a power supply, the modulus conversion chip
Power pins simultaneously be connected by the 5th capacity earth, one end of the 3rd inductance with the power supply, the described 3rd
The other end of inductance is connected with the radio frequency output pin of the modulus conversion chip, and the radio frequency output of the modulus conversion chip is drawn
Pin includes a crystal oscillator chip and the 7th electric capacity, the crystal oscillator chip by the 6th capacity earth, the oscillating circuit simultaneously
Power pins by the 7th capacity earth, oscillating circuit input pin and the crystalline substance in the piece of the modulus conversion chip
Shake the output pin connection of chip, oscillating circuit output pin is connect by the 7th electric capacity in the piece of the modulus conversion chip
Ground, one end of the crystal oscillator are connected with the clock input pin of the modulus conversion chip, the crystal oscillator
The other end is connected with the clock out pin of the modulus conversion chip.
7. Big Dipper satellite signal according to claim 6 receives display circuit, it is characterised in that the electricity of the 5th electric capacity
Capacitance is 1 μ F, and the capacitance of the 6th electric capacity is 1 μ F, and the inductance value of the 3rd inductance is 33nH, the 7th electric capacity
Capacitance is 1 μ F, and the frequency of oscillation of the crystal oscillator is 32.768kHz.
8. Big Dipper satellite signal according to claim 6 receives display circuit, it is characterised in that the signaling conversion circuit
Also include the 8th electric capacity and the 9th electric capacity, the processor voltage pin and voltage output pin of the modulus conversion chip pass through
8th capacity earth, the voltage input pin and input/output interface supply voltage pin of the modulus conversion chip are equal
Pass through the 9th capacity earth.
9. Big Dipper satellite signal according to claim 8 receives display circuit, it is characterised in that the 8th electric capacity and institute
The capacitance for stating the 9th electric capacity is 1 μ F.
10. Big Dipper satellite signal according to claim 1 receives display circuit, it is characterised in that the big-dipper satellite letter
Number receiving circuit also includes rectification circuit, mu balanced circuit, data signal storage circuit and data transmission circuit, the rectification circuit
For providing stable operating current, the mu balanced circuit is used to provide stable operating voltage, the data signal storage electricity
Road is used to store the data signal after conversion, and the data transmission circuit is used to transmit data.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720378489.5U CN206876886U (en) | 2017-04-12 | 2017-04-12 | A kind of Big Dipper satellite signal receives display circuit |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201720378489.5U CN206876886U (en) | 2017-04-12 | 2017-04-12 | A kind of Big Dipper satellite signal receives display circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064971A (en) * | 2017-04-12 | 2017-08-18 | 贵州北斗空间信息技术有限公司 | A kind of Big Dipper satellite signal receives display circuit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107064971A (en) * | 2017-04-12 | 2017-08-18 | 贵州北斗空间信息技术有限公司 | A kind of Big Dipper satellite signal receives display circuit |
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