CN204028226U - A kind of spectrum analyzer - Google Patents
A kind of spectrum analyzer Download PDFInfo
- Publication number
- CN204028226U CN204028226U CN201420364657.1U CN201420364657U CN204028226U CN 204028226 U CN204028226 U CN 204028226U CN 201420364657 U CN201420364657 U CN 201420364657U CN 204028226 U CN204028226 U CN 204028226U
- Authority
- CN
- China
- Prior art keywords
- operational amplifier
- output terminal
- input end
- inductance
- resistance
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Abstract
The utility model discloses a kind of spectrum analyzer, comprise the attenuator, low-pass filter, analog to digital converter and the control chip that are connected in turn; Described control chip is connected with USU interface, storage unit, touch-screen, input block and wireless sending module respectively.This spectrum analyzer has the advantages such as low in energy consumption, easy to operate.
Description
Technical field
The utility model relates to spectrum measuring device, is specifically provided with a kind of spectrum analyzer.
Background technology
Spectrum analyzer is the instrument of research electric signal spectrum structure, for the measurement of the signal parameters such as signal distortion, percentage modulation spectral purity, frequency stability and crosstalk, can be in order to some parameter of the Circuits System such as measuring amplifier and wave filter, be a kind of multiduty electronic measuring instrument.Mostly existing frequency spectrograph is to weigh and large equipment, due to the needs of measuring, the needs of outer especially field measurement, the frequency spectrograph of handheld portable takes up development, the still more complicated of scheme of current hand-held frequency spectrograph, the scheme that adopts FPGA, DSP and ARM to combine more, volume is larger, power consumption is large, and the working time is short.
Utility model content
For above-mentioned deficiency of the prior art, the purpose of this utility model is just to provide a kind of low in energy consumption, easy to operate spectrum analyzer.
For above-mentioned deficiency of the prior art, the technical scheme that an embodiment of this spectrum analyzer adopts is: comprise the attenuator, low-pass filter, analog to digital converter and the control chip that are connected in turn; Control chip is connected with USU interface, storage unit, touch-screen, input block and wireless sending module respectively;
Attenuator comprises the first capacitor C
1, the first capacitor C
1one end be connected with signal source, the first capacitor C
1the other end and the first inductance L
1connect; The first inductance L
1the other end respectively with the 3rd inductance L
3input end and the first operational amplifier A
1in-phase input end connect; The first operational amplifier A
1inverting input be connected with the second inductance L
2; The first operational amplifier A
1output terminal and the 3rd inductance L
3output terminal connect;
Low-pass filter comprises the first resistance R
1with the 4th resistance R
4; The first resistance R
1with the 4th resistance R
4input end all with the first operational amplifier A of attenuator
1output terminal connect, the first resistance R
1output terminal respectively at the second capacitor C
2input end, the 3rd capacitor C
3input end and the second resistance R
2input end connects; The second capacitor C
2output terminal respectively at the 3rd resistance R
3input end, the second operational amplifier A
2output terminal and the 6th resistance R
6input end connects;
The 3rd capacitor C
3output terminal respectively with the 3rd resistance R
3output terminal, the second operational amplifier A
2in-phase input end connect; The 4th resistance R
4output terminal respectively with the 5th resistance R
5input end and the 3rd operational amplifier A
3in-phase input end connect, the 6th resistance R
6output terminal and the 3rd operational amplifier A
3in-phase input end connect; The 5th resistance R
5output terminal and the 3rd operational amplifier A
3output terminal connect, the second operational amplifier A
2inverting input and the 3rd operational amplifier A
3reverse inter-input-ing ending grounding;
Analog to digital converter comprises four-operational amplifier A
4, four-operational amplifier A
4respectively the 3rd operational amplifier A of in-phase input end
3output terminal and the 5th inductance L
5input end connect; Four-operational amplifier A
4positive power source terminal and the 4th inductance L
4input end connect; The 4th inductance L
4output terminal and the first triode T
1collector connect, the first triode T
1base earth, the first triode T
1emitter and the first diode D
1one end connect;
The first diode D
1the other end respectively with the second diode D
2one end and four-operational amplifier A
4output terminal connect, the second diode D
2the other end respectively with four-operational amplifier A
4inverting input, the 5th operational amplifier A
5normal phase input end and the 6th inductance L
6input end connect; The 5th operational amplifier A
5inverting input respectively with the 5th inductance L
5output terminal, the 8th inductance L
8input end and the 7th inductance L
7one end connects; The 5th operational amplifier A
5output terminal and the 7th inductance L
7the other end connects.
Compared with prior art, the utility model has the advantage of:
The utility model can carry out the signal receiving passing to control chip after filtering, control chip can pass to computing machine by USU interface or radio receiving transmitting module after signal is processed, touch-screen and load module can operate in real time, reach the function of human-computer interaction, easy to operate, be easy to carry; The setting of storage unit, makes the read or write speed of analyser fast, more than analyser signal analysis frequency can being brought up to 2GHZ, and low in energy consumption.
Brief description of the drawings
Fig. 1 is the theory diagram of an embodiment of spectrum analyzer;
Fig. 2 is the circuit diagram of an embodiment of attenuator;
Fig. 3 is the circuit diagram of an embodiment of low-pass filter;
Fig. 4 is the circuit diagram of an embodiment of analog to digital converter.
Embodiment
Below embodiment of the present utility model is described; so that those skilled in the art understand the utility model; but should be clear; the utility model is not limited to the scope of embodiment; to those skilled in the art; as long as various variations appended claim limit and the spirit and scope of the present utility model determined in, these variations are apparent, all innovation and creation that utilize the utility model design are all at the row of protection.
With reference to figure 1, it is the theory diagram of an embodiment of spectrum analyzer, and the technical scheme of the spectrum analyzer of this enforcement can comprise the attenuator, low-pass filter, analog to digital converter and the control chip that are connected in turn; Control chip is connected with USU interface, storage unit, touch-screen, input block and wireless sending module respectively.
With reference to figure 2, Fig. 2 is the circuit diagram of an embodiment of attenuator, and its physical circuit can comprise the first capacitor C
1, the first capacitor C
1one end be connected with signal source, the first capacitor C
1the other end and the first inductance L
1connect; The first inductance L
1the other end respectively with the 3rd inductance L
3input end and the first operational amplifier A
1in-phase input end connect; The first operational amplifier A
1inverting input be connected with the second inductance L
2; The first operational amplifier A
1output terminal and the 3rd inductance L
3output terminal connect.
With reference to figure 3, Fig. 3 is the circuit diagram of an embodiment of low-pass filter; Its physical circuit can comprise the first resistance R
1with the 4th resistance R
4; The first resistance R
1with the 4th resistance R
4input end all with the first operational amplifier A of attenuator
1output terminal connect, the first resistance R
1output terminal respectively at the second capacitor C
2input end, the 3rd capacitor C
3input end and the second resistance R
2input end connects; The second capacitor C
2output terminal respectively at the 3rd resistance R
3input end, the second operational amplifier A
2output terminal and the 6th resistance R
6input end connects;
The 3rd capacitor C
3output terminal respectively with the 3rd resistance R
3output terminal, the second operational amplifier A
2in-phase input end connect; The 4th resistance R
4output terminal respectively with the 5th resistance R
5input end and the 3rd operational amplifier A
3in-phase input end connect, the 6th resistance R
6output terminal and the 3rd operational amplifier A
3in-phase input end connect; The 5th resistance R
5output terminal and the 3rd operational amplifier A
3output terminal connect, the second operational amplifier A
2inverting input and the 3rd operational amplifier A
3reverse inter-input-ing ending grounding.
With reference to figure 4, Fig. 4 is the circuit diagram of an embodiment of analog to digital converter, and its physical circuit can comprise four-operational amplifier A
4, four-operational amplifier A
4respectively the 3rd operational amplifier A of in-phase input end
3output terminal and the 5th inductance L
5input end connect; Four-operational amplifier A
4positive power source terminal and the 4th inductance L
4input end connect; The 4th inductance L
4output terminal and the first triode T
1collector connect, the first triode T
1base earth, the first triode T
1emitter and the first diode D
1one end connect;
The first diode D
1the other end respectively with the second diode D
2one end and four-operational amplifier A
4output terminal connect, the second diode D
2the other end respectively with four-operational amplifier A
4inverting input, the 5th operational amplifier A
5normal phase input end and the 6th inductance L
6input end connect; The 5th operational amplifier A
5inverting input respectively with the 5th inductance L
5output terminal, the 8th inductance L
8input end and the 7th inductance L
7one end connects; The 5th operational amplifier A
5output terminal and the 7th inductance L
7the other end connects.
The circuit diagram of attenuator, wave filter and analog to digital converter that this programme displays is the preferred circuit structure diagram of this spectrum analyzer, and attenuator, wave filter and analog to digital converter adopt these components and parts compositions can effectively simplify their circuit structure, improve serviceable life, reduce energy consumption; But, this programme also can not only be confined to the above-mentioned circuit structure coming that illustrates, it also can adopt other forms of circuit diagram.
In an embodiment of utility model, this analysis instrument also comprises the power module to spectrum analyzer power supply.After arranging like this, can ensure the long continuous firing of analyser.
Claims (2)
1. a spectrum analyzer, is characterized in that: comprise the attenuator, low-pass filter, analog to digital converter and the control chip that are connected in turn; Described control chip is connected with USU interface, storage unit, touch-screen, input block and wireless sending module respectively;
Described attenuator comprises the first capacitor C
1, described the first capacitor C
1one end be connected with signal source, the first capacitor C
1the other end and the first inductance L
1connect; Described the first inductance L
1the other end respectively with the 3rd inductance L
3input end and the first operational amplifier A
1in-phase input end connect; Described the first operational amplifier A
1inverting input be connected with the second inductance L
2; Described the first operational amplifier A
1output terminal and the 3rd inductance L
3output terminal connect;
Described low-pass filter comprises the first resistance R
1with the 4th resistance R
4; Described the first resistance R
1with the 4th resistance R
4input end all with the first operational amplifier A of attenuator
1output terminal connect, described the first resistance R
1output terminal respectively at the second capacitor C
2input end, the 3rd capacitor C
3input end and the second resistance R
2input end connects; Described the second capacitor C
2output terminal respectively at the 3rd resistance R
3input end, the second operational amplifier A
2output terminal and the 6th resistance R
6input end connects;
Described the 3rd capacitor C
3output terminal respectively with the 3rd resistance R
3output terminal, the second operational amplifier A
2in-phase input end connect; Described the 4th resistance R
4output terminal respectively with the 5th resistance R
5input end and the 3rd operational amplifier A
3in-phase input end connect, described the 6th resistance R
6output terminal and the 3rd operational amplifier A
3in-phase input end connect; Described the 5th resistance R
5output terminal and the 3rd operational amplifier A
3output terminal connect, described the second operational amplifier A
2inverting input and the 3rd operational amplifier A
3reverse inter-input-ing ending grounding;
Described analog to digital converter comprises four-operational amplifier A
4, described four-operational amplifier A
4respectively the 3rd operational amplifier A of in-phase input end
3output terminal and the 5th inductance L
5input end connect; Described four-operational amplifier A
4positive power source terminal and the 4th inductance L
4input end connect; Described the 4th inductance L
4output terminal and the first triode T
1collector connect, described the first triode T
1base earth, the first triode T
1emitter and the first diode D
1one end connect;
The first diode D
1the other end respectively with the second diode D
2one end and four-operational amplifier A
4output terminal connect, the second diode D
2the other end respectively with four-operational amplifier A
4inverting input, the 5th operational amplifier A
5normal phase input end and the 6th inductance L
6input end connect; Described the 5th operational amplifier A
5inverting input respectively with the 5th inductance L
5output terminal, the 8th inductance L
8input end and the 7th inductance L
7one end connects; Described the 5th operational amplifier A
5output terminal and the 7th inductance L
7the other end connects.
2. spectrum analyzer according to claim 1, is characterized in that: also comprise the power module to spectrum analyzer power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364657.1U CN204028226U (en) | 2014-07-03 | 2014-07-03 | A kind of spectrum analyzer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420364657.1U CN204028226U (en) | 2014-07-03 | 2014-07-03 | A kind of spectrum analyzer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204028226U true CN204028226U (en) | 2014-12-17 |
Family
ID=52068068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420364657.1U Expired - Fee Related CN204028226U (en) | 2014-07-03 | 2014-07-03 | A kind of spectrum analyzer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204028226U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699724B (en) * | 2016-03-25 | 2018-08-14 | 北华航天工业学院 | Long-range hybrid domain analog measurement instrument |
-
2014
- 2014-07-03 CN CN201420364657.1U patent/CN204028226U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105699724B (en) * | 2016-03-25 | 2018-08-14 | 北华航天工业学院 | Long-range hybrid domain analog measurement instrument |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141217 Termination date: 20160703 |