CN202649403U - A high-frequency signal testing device - Google Patents
A high-frequency signal testing device Download PDFInfo
- Publication number
- CN202649403U CN202649403U CN 201220265774 CN201220265774U CN202649403U CN 202649403 U CN202649403 U CN 202649403U CN 201220265774 CN201220265774 CN 201220265774 CN 201220265774 U CN201220265774 U CN 201220265774U CN 202649403 U CN202649403 U CN 202649403U
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- China
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- frequency signal
- cable
- proving installation
- frequency
- isolating device
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- Expired - Fee Related
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- Measuring Leads Or Probes (AREA)
Abstract
The utility model discloses a high-frequency signal testing device comprising a spectrum analyzer, a DC isolator, and a cable. One end of the DC isolator is connected with the input port of the spectrum analyzer, while the other end the DC isolator is connected with the cable. In a technical scheme using this high-frequency signal testing device, the DC isolator is connected with the input end of the spectrum analyzer, and a radio-frequency signal with mixed AC and DC signals can be tested by arrangement of the DC isolator while the spectrum analyzer is protected. The high-frequency signal testing device with low price and easy usage is applicable to testing of an open radio-frequency circuit.
Description
Technical field
The utility model relates to a kind of spectrum measurement device, more particularly, relates to a kind of high-frequency signal proving installation.
Background technology
When carrying out the radio circuit board test, often need the information such as the input/output signal of testing tool device and voltage, whether work to judge this device or module.For direct current signal, available multimeter, frequency lower available oscillograph, but to high-frequency signal or just cumbersome when needing spectrum measurement, because a lot of frequency spectrographs are that direct current output can not be arranged, and on circuit board often radiofrequency signal exist simultaneously in direct current signal, if direct input spectrum instrument or cause instrument damage.Although this type of probe is arranged, mostly expensive.And for this exploitation formula of circuit board signal, this type of probe also is can't Measurement accuracy, and different probes also has the limitation of its use.
The utility model content
The purpose of this utility model aims to provide a kind of high-frequency signal proving installation, solves the various deficiencies that exist in the prior art.
According to the utility model, a kind of high-frequency signal proving installation is provided, comprise frequency spectrograph, block isolating device, cable.One end of block isolating device is connected to the input port of frequency spectrograph, other end stube cable.
According to an embodiment of the present utility model, cable is flexible coaxial cable.
According to an embodiment of the present utility model, the skin of concentric cable is coated with screen layer.
According to an embodiment of the present utility model, the top of cable is provided with probe.
According to an embodiment of the present utility model, probe length is no more than 2 centimetres.
According to an embodiment of the present utility model, block isolating device is made of operational amplifier, electric capacity and resistance.The negative input mouth of operational amplifier is connected with output port, and the electrode input end of operational amplifier connects electric capacity and resistance, resistance other end ground connection, and the electric capacity other end receives input signal.
Adopt the technical solution of the utility model, connected block isolating device at the input end of frequency spectrograph, and the setting by block isolating device, can test the radiofrequency signal that alternating current-direct current mixes, protected simultaneously frequency spectrograph.And price is not high, and it is comparatively convenient to use, and tries out in the opening type radio frequency circuit test.
Description of drawings
In the utility model, identical Reference numeral represents identical feature all the time, wherein:
Fig. 1 is the structural representation of the utility model high-frequency signal proving installation;
Fig. 2 is the circuit diagram of block isolating device among Fig. 1.
Embodiment
Further specify the technical solution of the utility model below in conjunction with drawings and Examples.
With reference to Fig. 1, high-frequency signal proving installation of the present utility model comprises frequency spectrograph 10, block isolating device 11, cable 12 and probe 13.As shown in Figure 1, an end of block isolating device 11 is connected to the input end of frequency spectrograph 10, and its effect is to stop the direct current input.The other end of block isolating device 11 connect a flexibility, appearance is coated with the concentric cable 12 of screen layer, for example flexible cable of SMA.At the other end of concentric cable 12, can be provided with probe 13, probe 13 can according to circumstances be made by oneself, also can be the common probe on the common electronic devices and components market, probe 13 to do as much as possible short a bit, generally be no more than 2 centimetres.
The particular circuit configurations of block isolating device 11 as shown in Figure 2.Block isolating device 11 is made of operational amplifier 21, electric capacity 22 and resistance 23.The negative input mouth of operational amplifier 21 is connected with output port OUT, and the electrode input end of operational amplifier 21 connects electric capacity 22 and resistance 23, the other end ground connection of resistance 23, and the other end of electric capacity 22 receives input signal IN.
For open circuit, various signal radiation are larger, also will be received by frequency spectrum by cable the interference of measured signal, so with respect to Measurement accuracy, high-frequency signal proving installation of the present utility model more is applicable to functional test.
Adopt the technical solution of the utility model, connected block isolating device at the input end of frequency spectrograph, and the setting by block isolating device, can test the radiofrequency signal that alternating current-direct current mixes, protected simultaneously frequency spectrograph.And price is not high, and it is comparatively convenient to use, and tries out in the opening type radio frequency circuit test.
Those of ordinary skill in the art will be appreciated that above instructions only is one or more embodiments among the numerous embodiment of the utility model, and is not to use restriction of the present utility model.Any for the above embodiment equalization variation, modification and be equal to the technical schemes such as alternative, as long as meet connotation scope of the present utility model, all will drop in the scope that claims of the present utility model protect.
Claims (6)
1. a high-frequency signal proving installation is characterized in that, comprising:
Frequency spectrograph, block isolating device, cable;
One end of described block isolating device is connected to the input port of described frequency spectrograph, and the other end connects described cable.
2. high-frequency signal proving installation as claimed in claim 1 is characterized in that:
Described cable is flexible coaxial cable.
3. high-frequency signal proving installation as claimed in claim 2 is characterized in that:
The skin of described concentric cable is coated with screen layer.
4. high-frequency signal proving installation as claimed in claim 1 is characterized in that:
The top of described cable is provided with probe.
5. high-frequency signal proving installation as claimed in claim 5 is characterized in that:
Described probe length is no more than 2 centimetres.
6. high-frequency signal proving installation as claimed in claim 1 is characterized in that:
Described block isolating device is made of operational amplifier, electric capacity and resistance;
The negative input mouth of described operational amplifier is connected with output port;
The electrode input end of described operational amplifier connects described electric capacity and described resistance;
Described resistance other end ground connection;
The described electric capacity other end receives input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265774 CN202649403U (en) | 2012-06-07 | 2012-06-07 | A high-frequency signal testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220265774 CN202649403U (en) | 2012-06-07 | 2012-06-07 | A high-frequency signal testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202649403U true CN202649403U (en) | 2013-01-02 |
Family
ID=47418492
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220265774 Expired - Fee Related CN202649403U (en) | 2012-06-07 | 2012-06-07 | A high-frequency signal testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202649403U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610365A (en) * | 2020-05-09 | 2020-09-01 | 深圳市火乐科技发展有限公司 | Spectrum analysis device and spectrum analysis method |
-
2012
- 2012-06-07 CN CN 201220265774 patent/CN202649403U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111610365A (en) * | 2020-05-09 | 2020-09-01 | 深圳市火乐科技发展有限公司 | Spectrum analysis device and spectrum analysis method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130102 Termination date: 20130607 |