CN209087099U - A kind of RF signal collection and the test probe of signal injection - Google Patents
A kind of RF signal collection and the test probe of signal injection Download PDFInfo
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- CN209087099U CN209087099U CN201821562249.1U CN201821562249U CN209087099U CN 209087099 U CN209087099 U CN 209087099U CN 201821562249 U CN201821562249 U CN 201821562249U CN 209087099 U CN209087099 U CN 209087099U
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Abstract
The utility model relates to the test probes that a kind of RF signal collection and signal inject, including sonde body, attenuator, signal processing module, cable, the sonde body is used to acquire the radiofrequency signal or output high-frequency signal of input with probe, the sonde body is connected to the attenuator prevents high-power signal from damaging test equipment for signal to be carried out decaying, the attenuator is connected to the signal processing module for isolation signals DC component, and the signal processing module is connected to the cable with radio frequency plug, and the signal is input to measuring instruments.The utility model application range is wide, light-weight, small in size, easy to carry, and cost performance is high, has filled up market demand vacancy, the acquisition and injection suitable for high-frequency signal.
Description
Technical field
The utility model relates to the radio frequency testing field of circuit module, specifically a kind of RF signal collection and signal
The test of injection is popped one's head in.
Background technique
The characteristics of radiofrequency signal is that signal frequency high-amplitude is small, and signal is easy to appear decaying and distortion in test transmission,
It is inaccurate to lead to signal acquisition, and can not judge the technical parameter of signal, currently in RF signal collection testing field, needs to adopt
It is popped one's head in dedicated radio frequency testing.
Deutsche Bundespatent CN01816197.9 (publication date is on 01 07th, 2004) Luo Senbeigeer high frequency technique two closes public affairs
This discloses a kind of novel high frequency probe for being used for printed circuit board or high frequency cable in department's Stefan west, sets on measuring probe
It is equipped with a signalling contact, and coaxial with earth conductor structure and at least one signal conductor surrounded by medium
Conductor is connected with the measuring probe with terminals.The Agilent of mainstream on the market, the companies such as Tyke use similar probe, should
The on-line testing acquisition of radiofrequency signal may be implemented in class radio-frequency probe, and disadvantage has following three points:
1, working frequency tests probe in the passive RF of 1.5GHz, and function only supports the acquisition of radiofrequency signal, can not
Meet the testing requirement that user injects radiofrequency signal；
2, radio frequency testing probe on the market only provides the acquisition function to radiofrequency signal, does not support user further to believe
Number processing, cause obstacle to engineering staff's radiofrequency signal test analysis；
3, without using blocking function, the DC component in radiofrequency signal cannot be filtered out directly, may be led such probe
Acquisition apparatus overload is caused, test equipment is damaged.
Summary of the invention
The technical problem to be solved by the utility model is to propose the survey of a kind of RF signal collection and signal injection
Probe header realizes the blocking processing of radiofrequency signal and decays adjustable, realizes the precise measurement of high frequency radio signals, simultaneously
It can guarantee that measuring device does not cause failure because of signal overloading.
Technical problem to be solved in the utility model is realized using following technical scheme:
A kind of RF signal collection and the test probe of signal injection, the test probe use EMC Technology design, input
Impedance is 50 ohm, and the test probe includes sonde body, attenuator, signal processing module, cable, and the sonde body is with spy
Needle be used for acquire input radiofrequency signal or output high-frequency signal, the sonde body be connected to the attenuator be used for by signal into
Row decaying prevents high-power signal from damaging test equipment, and the attenuator is connected to the signal processing module for isolation signals
DC component, the signal processing module is connected to the cable with radio frequency plug, and the signal is input to measuring instruments.
The sonde body uses semi-rigid cable as main body, and the shielded layer of semi-rigid cable is equipped with ground connection by conducting wire
Folder.
The sonde body is connected on the attenuator by SMA male connector, and the attenuator is using variable bridge T-type decaying
Device is, it can be achieved that the adjustable signal decaying of 10DB, 20DB, 30DB.
The signal processing module is designed using microstrip circuit and metal cavity structure, realizes 36V or less direct current signal
Two-way isolation features.
One end for being connected to measuring instrument of the cable uses SMA specification plug, and being equipped with includes that SMA turns SMB, BNC, N
It is adapter, realization is matched with all kinds of radio-frequency apparatus.
The beneficial effects of the utility model are:
1, application range is wide, and the utility model can be used for RF signal collection, injection and the processing of DC-1.5GHz frequency
Function, practical value with higher and promotion prospect；
2, light-weight, small in size, easy to carry, the design that the utility model has avoided large volume in the design process is thought
Road, test probe size is small, light-weight, easy to carry, alleviates the radiofrequency signal test gathering project amount and survey of engineering staff
Examination burden；
3, cost performance is high, and the utility model reduces the use of high price consumptive material to the maximum extent during realization, and in the market
Common test probe is compared, and has certain superiority of effectiveness；
4, market demand vacancy is filled up, is had no on Vehicles Collected from Market and is provided simultaneously with the utility model and realizes specific test function
Mature test probe, the utility model can fill up market demand vacancy, have considerable economic value.
Detailed description of the invention
The present invention will be further described with reference to the accompanying drawings and examples.
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment
In order to be easy to understand the technical means, creative features, achievement of purpose, and effectiveness of the utility model, under
It is further described in face of the utility model.
Structural schematic diagram as shown in Figure 1:
A kind of RF signal collection and the test probe of signal injection, the test probe use EMC Technology design, input
Impedance is 50 ohm, can be directly connected to 50 ohm of equipment connector, realizes probe apparatus matching.
Further, the test probe includes sonde body 1, attenuator 2, signal processing module 3, cable 4, the probe
Body 1 is used to acquire the radiofrequency signal of input with probe or output high-frequency signal, the sonde body 1 are connected to the attenuator 2
Prevent high-power signal from damaging test equipment for signal to be carried out decaying, the attenuator 2 is connected to the signal processing mould
Block 3 is used for isolation signals DC component, and the signal processing module 3 is connected to the cable 4 with radio frequency plug for signal
It is input to measuring instrument.
Further, the sonde body 1 uses semi-rigid cable as main body, and the shielded layer of semi-rigid cable is pacified by conducting wire
Equipped with earth clip 5, realizes and filter out the noise signal ground connection that probe body introduces, useful signal is electromagnetically shielded.
Further, the sonde body 1 is connected on the attenuator 2 by SMA male connector, and the attenuator 2 uses can
Become bridge T-type attenuator, it can be achieved that 10DB, 20DB, 30DB adjustable signal decaying carry out signal when measuring high-power signal
Decaying can protect tested instrument.
General signal pickup assembly (such as spectrum analyzer) has strict requirements to input signal power on the market, thereon
Limit must not exceed 1 watt.In radiofrequency signal test process, the signal component in circuit includes DC component and high fdrequency component,
DC component will result directly in apparatus overload, damage test equipment as being directly filled into signal pickup assembly receiving port.This reality
The signal processing module 3 described in novel is designed using microstrip circuit and metal cavity structure is, it can be achieved that 36V or less direct current signal
Two-way isolation features, when test probe is for signal injection, the DC component of the output signal of signal generator also will be by
It filters out, avoids equipment fault caused by signal overloading caused by due to artificial or unpredictable.
Further, one end for being connected to measuring instrument of the cable 4 uses SMA specification plug, is equipped with and turns including SMA
SMB, BNC, N system adapter can be connected to various universal signal generating device by substitute mode, and signal generator is generated
High frequency electrocardiography any working node into radio frequency circuit board, signal Insertion Loss amount is less than 5%.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Only the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model also has
Various changes and modifications, these various changes and improvements fall within the scope of the claimed invention.The requires of the utility model
Protection scope is defined by the appending claims and its equivalent thereof.
Claims (5)
1. a kind of RF signal collection and the test probe of signal injection, it is characterised in that: the test probe uses EMC technology
Design, input impedance are 50 ohm, and the test probe includes sonde body (1), attenuator (2), signal processing module (3), electricity
Cable (4), the sonde body (1) are used to acquire the radiofrequency signal or output high-frequency signal of input, the sonde body (1) with probe
Be connected to the attenuator (2) prevents high-power signal from damaging test equipment, the attenuator (2) for signal to be carried out decaying
The signal processing module (3) are connected to for isolation signals DC component, the signal processing module (3) is connected to have and penetrate
The signal is input to measuring instruments for the cable (4) of frequency plug.
2. a kind of RF signal collection according to claim 1 and the test probe of signal injection, it is characterised in that: described
Sonde body (1) uses semi-rigid cable as main body, and the shielded layer of semi-rigid cable is equipped with earth clip (5) by conducting wire.
3. a kind of RF signal collection according to claim 1 and the test probe of signal injection, it is characterised in that: described
Sonde body (1) is connected on the attenuator (2) by SMA male connector, and the attenuator (2), can using variable bridge T-type attenuator
Realize the adjustable signal decaying of 10DB, 20DB, 30DB.
4. a kind of RF signal collection according to claim 1 and the test probe of signal injection, it is characterised in that: described
Signal processing module (3) is designed using microstrip circuit and metal cavity structure, realizes the two-way isolation function of 36V or less direct current signal
Energy.
5. a kind of RF signal collection according to claim 1 and the test probe of signal injection, it is characterised in that: described
One end for being connected to measuring instrument of cable (4) uses SMA specification plug, and being equipped with includes that SMA turns SMB, BNC, N system adapter,
Realization is matched with all kinds of radio-frequency apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821562249.1U CN209087099U (en) | 2018-09-20 | 2018-09-20 | A kind of RF signal collection and the test probe of signal injection |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821562249.1U CN209087099U (en) | 2018-09-20 | 2018-09-20 | A kind of RF signal collection and the test probe of signal injection |
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| CN209087099U true CN209087099U (en) | 2019-07-09 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456166A (en) * | 2019-08-22 | 2019-11-15 | 北京大泽科技有限公司 | A method of measurement inhibits the rejection characteristic of network |
| CN112198173A (en) * | 2020-09-22 | 2021-01-08 | 上海欧申科技有限公司 | Wireless monitoring device for measuring water content of logging drilling fluid and control method thereof |
-
2018
- 2018-09-20 CN CN201821562249.1U patent/CN209087099U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110456166A (en) * | 2019-08-22 | 2019-11-15 | 北京大泽科技有限公司 | A method of measurement inhibits the rejection characteristic of network |
| CN112198173A (en) * | 2020-09-22 | 2021-01-08 | 上海欧申科技有限公司 | Wireless monitoring device for measuring water content of logging drilling fluid and control method thereof |
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