CN105516048A - Simple carrier signal analysis system and method - Google Patents
Simple carrier signal analysis system and method Download PDFInfo
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- CN105516048A CN105516048A CN201510899797.8A CN201510899797A CN105516048A CN 105516048 A CN105516048 A CN 105516048A CN 201510899797 A CN201510899797 A CN 201510899797A CN 105516048 A CN105516048 A CN 105516048A
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- carrier signal
- frequency
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- frequency mixing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L27/00—Modulated-carrier systems
- H04L27/26—Systems using multi-frequency codes
- H04L27/2601—Multicarrier modulation systems
- H04L27/2602—Signal structure
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L25/00—Baseband systems
- H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
- H04L25/03—Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
- H04L25/03006—Arrangements for removing intersymbol interference
- H04L25/03178—Arrangements involving sequence estimation techniques
- H04L25/03184—Details concerning the metric
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Power Engineering (AREA)
- Measuring Frequencies, Analyzing Spectra (AREA)
Abstract
The invention relates to the technical field of signal analysis and discloses a simple carrier signal analysis system and method. The system comprises a frequency mixing module, a narrow-band filtering, a linear amplification module, a power detection module, an A/D sampling module, a control module, a DDS (Direct Digital Synthesizer) local oscillator module, a liquid crystal display module and a power module used for providing a working power supply for the system, wherein the frequency mixing module, the narrow-band filtering, the linear amplification module, the power detection module and the A/D sampling module are connected in sequence; the A/D sampling module, the liquid crystal display module and the control module are connected; the DDS local oscillator module is connected between the control module and the frequency mixing module; and the frequency mixing module is also connected to a carrier signal source. The system and the method have the advantages of wide measuring frequency range coverage, wide measuring amplitude range coverage, small error of a frequency value of a display signal and small amplitude error for display of each signal.
Description
Technical field
The present invention relates to signal analysis technology field, more particularly, the particularly simple and easy carrier signal analytical system of one and method.
Background technology
Carrier signal analysis is widely used in signal analysis field.And design a kind of measuring frequency scope and cover wide, measuring amplitude precision is high, and the frequency values error of display is little, and the carrier signal analytical system showing the range error of each signal little is the direction that those skilled in the art study.
Summary of the invention
The first object of the present invention is to provide a kind of simple and easy carrier signal analytical system, and this analytical system has measuring frequency scope and covers wide, measuring amplitude scope to cover frequency values error that is wide, display little and show the little advantage of the range error of each signal.
The second object of the present invention is to provide a kind of simple and easy carrier signal analytical method.
In order to reach above-mentioned first object, the technical solution used in the present invention is as follows:
A kind of simple and easy carrier signal analytical system, comprise frequency mixing module, narrow-band filtering module, Linear Amplifer module, power detection module, A/D sampling module, control module, DDS local oscillator module, LCD MODULE and provide the power module of working power for this system, described frequency mixing module, narrow-band filtering module, Linear Amplifer module, power detection module is connected successively with A/D sampling module, described A/D sampling module, LCD MODULE is all connected with control module, described DDS local oscillator model calling is between control module and frequency mixing module, described frequency mixing module is also connected with a carrier signal source.
Preferably, described frequency mixing module adopts model to be the active mixer of AD8343.
Preferably, described DDS local oscillator module adopts model to be the local oscillation circuit of AD9834.
Preferably, described control module adopts model to be the single-chip microcomputer of MSP430F1612.
Preferably, described power detection module employing model is the power detection circuit of AD8362.
Preferably, described carrier signal source is high frequency signal generator.
In order to reach above-mentioned second object, the technical solution used in the present invention is as follows:
A kind of simple and easy carrier signal analytical method, the method adopts above-mentioned simple and easy carrier signal analytical system, specifically comprises the following steps:
S1, system initialization work;
S2, DDS local oscillator module carries out frequency sweep and voltage acquisition;
S3, control module judge whether to receive intermediate-freuqncy signal, then perform step S4 in this way, otherwise return value step S2;
S4, control module store carrier voltage and the frequency of this intermediate-freuqncy signal;
S5, control module judge whether that frequency sweep terminates, and then show each carrier frequency and amplitude by LCD MODULE in this way, as otherwise be back to step S2.
Compared with prior art, the invention has the advantages that: carrier signal analytical system measuring frequency scope of the present invention covers 20MHz-30MHz, measuring amplitude scope covers-30dBm--10dBm, the frequency values error of display is no more than 100KHz, and the range error demonstrating each signal is no more than 1dBm.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the frame diagram of simple and easy carrier signal analytical system of the present invention.
Fig. 2 is the flow chart of simple and easy carrier signal analytical method of the present invention.
Fig. 3 is that in the present invention, power detection exports the dBm curve chart detected with frequency spectrograph.
Description of reference numerals: 1, frequency mixing module, 2, narrow-band filtering module, 3, Linear Amplifer module, 4, power detection module, 5, A/D sampling module, 6, control module, 7, DDS local oscillator module, 8, LCD MODULE.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described in detail, can be easier to make advantages and features of the invention be readily appreciated by one skilled in the art, thus more explicit defining is made to protection scope of the present invention.
Consult shown in Fig. 1, the invention provides a kind of simple and easy carrier signal analytical system, comprise frequency mixing module 1, narrow-band filtering module 2, Linear Amplifer module 3, power detection module 4, A/D sampling module 5, control module 6, DDS local oscillator module 7, LCD MODULE 8 and provide the power module of working power for this system.
Wherein, frequency mixing module 1, narrow-band filtering module 2, Linear Amplifer module 3, power detection module 4 are connected successively with A/D sampling module 5, A/D sampling module 5, LCD MODULE 8 are all connected with control module 6, DDS local oscillator module 7 is connected between control module 6 and frequency mixing module 1, and frequency mixing module 1 is also connected with a carrier signal source (for generation of carrier signal).
Described frequency mixing module 1 adopts model to be the active mixer of AD8343.AD8343 is a high-performance, broadband active frequency mixer, and have extremely low crosstalk, all of the port all has wide bandwidth, is applicable to very much requiring strict transmitting application or receive path application, and the exemplary variable frequency gain of AD8343 is 7dB.Integrated LO driver, with low LO drive level, supports 50 Ω differential input impedance.
Described DDS local oscillator module 7 adopts model to be the local oscillation circuit of AD9834.AD9834 provides frequency modulation function.Frequency register is 28; Clock rate is 75MHz, can realize the resolution of 0.28Hz.Equally, when clock rate is 1MHz, AD9834 can realize the resolution of 0.004Hz.The method affecting frequency and phase-modulation is by serial line interface bit load registers, then switches register by software or FSELECT/PSELECT pin.AD9834 is by three-wire type serial line interface write data.This serial line interface can with the clock rate work of the highest 40MHz, and microcontroller operating such.
Described control module 6 adopts model to be the single-chip microcomputer of MSP430F1612.Its peripheral hardware enriches, and I/O mouth is sufficient, and has the feature such as low-power consumption, flexible configuration.Described A/D sampling module 5 adopts AD8344, AD8344 be aly carry voltage reference, low-power consumption, 16 8 multi-channel serial export sampling analog to digital converters, peripheral circuit is simpler.
Described power detection module 4 adopts model to be the power detection circuit of AD8362.The relation of the linear growth of dBm power of the signal after mixing amplification and the signal of input, as power measurement, during device, VOUT with VSET is directly connected.Export and be directly proportional to the logarithm of the effective value of input signal, thus reading can directly represent with dBm, and it meets the requirement of signal input range (-30dBm--10dBm).
Described power module is made up of transforming portion, filtering part, voltage stabilization part.For whole system provides ± 5V or ± 12V voltage, guarantee the normal table work of circuit.This partial circuit is fairly simple, all adopts three-terminal voltage-stabilizing pipe to realize.
As preferably, described carrier signal source is high frequency signal generator.
Shown in composition graphs 1 and Fig. 2, the analytical method of simple and easy carrier signal analytical system of the present invention adopts following steps:
S1, system initialization work;
S2, DDS local oscillator module 7 carries out frequency sweep and voltage acquisition;
S3, control module 6 judge whether to receive intermediate-freuqncy signal, then perform step S4 in this way, otherwise return value step S2;
S4, control module 6 store carrier voltage and the frequency of this intermediate-freuqncy signal;
S5, control module 6 judge whether that frequency sweep terminates, and then show each carrier frequency and amplitude by LCD MODULE in this way, as otherwise be back to step S2.What Fig. 3 showed is that power detection exports the dBm curve chart detected with frequency spectrograph.
The programming of control module 6 can adopt following program to represent:
What following table 1 showed is export detecting circuit and input signal dBm linear (25MHz signal inputs);
Table 1
What following table 2 showed is the Frequency and Amplitude measurement result of 20MHZ signal.
Table 2
What following table 3 showed is the Frequency and Amplitude measurement result of 25MHZ signal.
Table 3
What following table 4 showed is the Frequency and Amplitude measurement result of 27MHZ signal.
Table 4
The frequency measurement (fixing-20dBm) of what following table 5 showed is arbitrary signal.
Table 5
According to above test data, carrier signal analytical system of the present invention scanning recognition scope can cover 20-30MHz optional frequency sine wave signal, sigtnal interval is 1MHz, measuring-signal amplitude range covers (-30dBm to-10dBm), the frequency values of liquid crystal digital display, error is no more than 300KHz; Measurement accuracy also demonstrates the amplitude of each signal respectively, and error is no more than 2dBm.
Although describe embodiments of the present invention by reference to the accompanying drawings; but patent owner can make various distortion or amendment within the scope of the appended claims; as long as be no more than the protection range described by claim of the present invention, all should within protection scope of the present invention.
Claims (7)
1. a simple and easy carrier signal analytical system, it is characterized in that: comprise frequency mixing module (1), narrow-band filtering module (2), Linear Amplifer module (3), power detection module (4), A/D sampling module (5), control module (6), DDS local oscillator module (7), LCD MODULE (8) and provide the power module of working power for this system, described frequency mixing module (1), narrow-band filtering module (2), Linear Amplifer module (3), power detection module (4) is connected successively with A/D sampling module (5), described A/D sampling module (5), LCD MODULE (8) is all connected with control module (6), described DDS local oscillator module (7) is connected between control module (6) and frequency mixing module (1), described frequency mixing module (1) is also connected with a carrier signal source.
2. simple and easy carrier signal analytical system according to claim 1, is characterized in that: described frequency mixing module (1) adopts model to be the active mixer of AD8343.
3. simple and easy carrier signal analytical system according to claim 1, is characterized in that: described DDS local oscillator module (7) adopts model to be the local oscillation circuit of AD9834.
4. simple and easy carrier signal analytical system according to claim 1, is characterized in that: described control module (6) adopts model to be the single-chip microcomputer of MSP430F1612.
5. simple and easy carrier signal analytical system according to claim 1, is characterized in that: described power detection module (4) employing model is the power detection circuit of AD8362.
6. simple and easy carrier signal analytical system according to claim 1, is characterized in that: described carrier signal source is high frequency signal generator.
7. a simple and easy carrier signal analytical method, is characterized in that: the method is based on the simple and easy carrier signal analytical system described in claim 1-6 any one, and described analytical method specifically comprises the following steps:
S1, system initialization work;
S2, DDS local oscillator module (7) carries out frequency sweep and voltage acquisition;
S3, control module (6) judge whether to receive intermediate-freuqncy signal, then perform step S4 in this way, otherwise return value step S2;
S4, control module (6) store carrier voltage and the frequency of this intermediate-freuqncy signal;
S5, control module (6) judge whether that frequency sweep terminates, and then show each carrier frequency and amplitude by LCD MODULE in this way, as otherwise be back to step S2.
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| CN201510899797.8A CN105516048A (en) | 2015-12-08 | 2015-12-08 | Simple carrier signal analysis system and method |
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| CN201510899797.8A CN105516048A (en) | 2015-12-08 | 2015-12-08 | Simple carrier signal analysis system and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813963A (en) * | 2019-01-29 | 2019-05-28 | 珠海迈科智能科技股份有限公司 | A kind of scan method and device of chip microcontroller frequency spectrum |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064875A (en) * | 2010-12-24 | 2011-05-18 | 中国电子科技集团公司第五十四研究所 | Novel digital beacon receiving device |
| CN204832341U (en) * | 2015-08-15 | 2015-12-02 | 怀化学院 | Portable sweep generator of low -cost wide band |
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- 2015-12-08 CN CN201510899797.8A patent/CN105516048A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102064875A (en) * | 2010-12-24 | 2011-05-18 | 中国电子科技集团公司第五十四研究所 | Novel digital beacon receiving device |
| CN204832341U (en) * | 2015-08-15 | 2015-12-02 | 怀化学院 | Portable sweep generator of low -cost wide band |
Non-Patent Citations (3)
| Title |
|---|
| 刘邦魁: "基于DDS的频谱分析技术研究", 《中国优秀硕士学位论文全文数据库 工程科技辑》 * |
| 贺瑞粉: "基于DDS技术的扫频仪设计", 《中国优秀硕士学位论文全文数据库 工程科技辑》 * |
| 陈文辉，贾非: "基于DDS的频谱分析仪设计", 《国外电子元器件》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109813963A (en) * | 2019-01-29 | 2019-05-28 | 珠海迈科智能科技股份有限公司 | A kind of scan method and device of chip microcontroller frequency spectrum |
| CN109813963B (en) * | 2019-01-29 | 2021-07-13 | 珠海迈科智能科技股份有限公司 | Method and device for realizing frequency spectrum scanning by single chip microcomputer |
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Application publication date: 20160420 |