CN205510065U - Wireless radio frequency radiation harasses test system - Google Patents
Wireless radio frequency radiation harasses test system Download PDFInfo
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- CN205510065U CN205510065U CN201620139119.1U CN201620139119U CN205510065U CN 205510065 U CN205510065 U CN 205510065U CN 201620139119 U CN201620139119 U CN 201620139119U CN 205510065 U CN205510065 U CN 205510065U
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- preamplifier
- test system
- anechoic chamber
- cable
- less radio
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Abstract
The utility model relates to a wireless radio frequency radiation harasses test system, including anechoic chamber, set up in antenna tower in the anechoic chamber, install in receiving antenna on the antenna tower, receiving antenna passes through the rear end cable and connects a preamplifier, preamplifier with set up in the outside receiver of anechoic chamber links to each other. The utility model discloses in, set up preamplifier inside anechoic chamber to directly link to each other through cable and receiving antenna rear end, thereby shortened the length of cable between preamplifier and the receiving antenna greatly, and then effectively reduce the end that anechoic chamber demonstrates and make an uproar on the receiver, improve the measuring accuracy.
Description
Technical field
This utility model relates to a kind of less radio-frequency EMC emission test system.
Background technology
Refer to Fig. 1, existing less radio-frequency EMC emission test system structure includes: anechoic chamber, 1, if
It is placed in the mast 2 in described anechoic chamber, 1, is installed on the reception antenna 3 on described mast 2, described
Reception antenna 3 is sequentially connected to preamplifier 5 He being arranged at outside described anechoic chamber, 1 by cable 4
Receiver 6, the arrangement mode of this structural detail is as in figure 2 it is shown, decay attenuator that i.e. cable 4 produces
ZA substitutes, and reconnects amplifier U1, U2 and U3 below.Along with the fast development of electronic device field,
Required precision for less radio-frequency EMC emission test is more and more higher, the most just requires to reduce anechoic chamber, as far as possible
Making an uproar in the end, i.e. reduces the background noise impact for test result, and current way is by the increasing of preamplifier 5
Benefit tunes up, but owing to cable 4 length between reception antenna 3 and preamplifier 5 is longer, causes decay
Seriously, reduce the end of anechoic chamber, to make an uproar effect inconspicuous.
Therefore, how a kind of less radio-frequency EMC emission test system that can reduce and make an uproar at the end is provided, is this area
The technical problem that technical staff is urgently to be resolved hurrily.
Utility model content
This utility model provides a kind of less radio-frequency EMC emission test system, to solve above-mentioned technical problem.
For solving above-mentioned technical problem, this utility model provides a kind of less radio-frequency EMC emission test system, bag
Include anechoic chamber, be arranged at the mast in described anechoic chamber, be installed on the reception antenna on described mast,
Described reception antenna rear end connects a preamplifier by cable, described preamplifier be arranged at described electricity
Receiver outside ripple darkroom is connected.
It is preferred that a length of the 0.5 of described cable～1m.
It is preferred that described preamplifier includes the first amplifier and the second amplifier.
It is preferred that be provided with the 3rd amplifier in described receiver.
It is preferred that the operating frequency of described preamplifier is 1GHz～18GHz.
It is preferred that also include power supply unit, said supply unit is connected with described preamplifier.
Compared with prior art, the less radio-frequency EMC emission test system that this utility model provides, including electric wave
Darkroom, is arranged at the mast in described anechoic chamber, is installed on the reception antenna on described mast, described
Reception antenna rear end connects a preamplifier by cable, and described preamplifier is with to be arranged at described electric wave dark
The receiver of outdoor is connected.In this utility model, preamplifier is arranged at inside anechoic chamber, and leads to
Cross cable to be joined directly together with reception antenna rear end, thus substantially reduce the length of cable, and then effectively reduce electricity
Making an uproar in the end in ripple darkroom, improves measuring accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing less radio-frequency EMC emission test system；
Fig. 2 is the replacement circuit schematic diagram of existing less radio-frequency EMC emission test system；
Fig. 3 is the structural representation of the less radio-frequency EMC emission test system of this utility model one detailed description of the invention
Figure；
Fig. 4 is the replacement circuit of the less radio-frequency EMC emission test system of this utility model one detailed description of the invention
Schematic diagram.
In Fig. 1: 1-anechoic chamber, 2-mast, 3-reception antenna, 4-cable, 5-preamplifier, 6-
Receiver；
In Fig. 3: 10-anechoic chamber, 20-mast, 30-reception antenna, 40-cable, 50-preamplifier,
60-receiver.
Detailed description of the invention
Understandable, below in conjunction with the accompanying drawings for enabling above-mentioned purpose of the present utility model, feature and advantage to become apparent from
Detailed description of the invention of the present utility model is described in detail.It should be noted that, this utility model accompanying drawing is all adopted
By the form simplified and all use non-ratio accurately, only in order to convenient, aid in illustrating this utility model lucidly
The purpose of embodiment.
The less radio-frequency EMC emission test system that this utility model provides, as it is shown on figure 3, include anechoic chamber,
10, it is arranged at the mast 20 in described anechoic chamber, 10, is installed on the reception antenna on described mast 20
30, described reception antenna 30 rear end connects a preamplifier 50, described preamplifier by cable 40
50 are connected with the receiver 60 being arranged at outside described anechoic chamber, 10.In this utility model, by preposition amplification
It is internal that device 50 is arranged at anechoic chamber, 10, and is joined directly together with reception antenna 30 rear end by cable 40, from
And substantially reduce the length of cable 40 between preamplifier 50 and reception antenna 30, and then effectively reduce
Making an uproar in the end that anechoic chamber, 10 presents on receiver 60, improves measuring accuracy.
It is preferred that please continue to refer to Fig. 3, a length of the 0.5～1m of described cable 40, a length of with existing
The cable of more than 10m is compared, and this utility model, on the premise of not affecting proper testing function, substantially reduces
The length of cable 40, coordinates the gain increasing described preamplifier 50 simultaneously, can effectively reduce electric wave dark
Make an uproar in the end that room 10 presents on receiver 60.
It is preferred that ask emphasis with reference to Fig. 4, in the present embodiment, described preamplifier 50 includes the first amplifier
U1 and the second amplifier U2, is provided with the 3rd amplifier U3 in described receiver 60, what cable 40 produced declines
Subtract and substitute with attenuator ZA, then attenuator ZA is between the second amplifier U2 and the 3rd amplifier U3,
Test data shows: compared to the simple gain increasing described preamplifier 50, the application shortens line simultaneously
The mode of cable 40 length, can effectively reduce the end that anechoic chamber, 10 presents on receiver 60 and make an uproar.
It is preferred that the operating frequency of described preamplifier 50 is 1GHz～18GHz, to be applicable to multiple electricity
The less radio-frequency EMC emission test of sub-product.
It is preferred that this test system also includes power supply unit (not shown), said supply unit is preposition with described
Amplifier 50 connects, for powering for described preamplifier 50.
Certainly, the test system that the application provides, can be used for testing the EMC emission test of less radio-frequency (RF),
Can also be used for the EMC emission test in other radiation place, range is wide；Can differentiate rapidly and accurately and produce
The noise of product, and the end in laboratory place make an uproar；Without more exchange device, the adjustment only by position of components comes
Reducing the end to make an uproar, low cost, it is convenient to implement.
In sum, the less radio-frequency EMC emission test system that this utility model provides, including anechoic chamber, 10,
It is arranged at the mast 20 in described anechoic chamber, 10, is installed on the reception antenna 30 on described mast 20,
Described reception antenna 30 rear end connects a preamplifier 50 by cable 40, described preamplifier 50 with
It is arranged at the receiver 60 outside described anechoic chamber, 10 to be connected.In this utility model, by preamplifier 50
It is arranged at anechoic chamber, 10 internal, and is joined directly together with reception antenna 30 rear end by cable 40, thus greatly
Shorten greatly the length of cable 40 between preamplifier 50 and reception antenna 30, and then effectively reduce electric wave
Making an uproar in the end that darkroom 10 presents on receiver 60, improves measuring accuracy.
Obviously, those skilled in the art can carry out various change and modification without deviating from this reality to utility model
By novel spirit and scope.So, if these amendments of the present utility model and modification belong to this utility model
Within the scope of claim and equivalent technologies thereof, then this utility model is also intended to include that these are changed and modification exists
In.
Claims (6)
1. a less radio-frequency EMC emission test system, including anechoic chamber, is arranged in described anechoic chamber,
Mast, be installed on the reception antenna on described mast, it is characterised in that described reception antenna rear end lead to
Cross cable and connect a preamplifier, described preamplifier and the receiver being arranged at outside described anechoic chamber,
It is connected.
2. less radio-frequency EMC emission test system as claimed in claim 1, it is characterised in that described cable
A length of 0.5～1m.
3. less radio-frequency EMC emission test system as claimed in claim 1, it is characterised in that described preposition
Amplifier includes the first amplifier and the second amplifier.
4. less radio-frequency EMC emission test system as claimed in claim 3, it is characterised in that described reception
The 3rd amplifier it is provided with in machine.
5. less radio-frequency EMC emission test system as claimed in claim 1, it is characterised in that described preposition
The operating frequency of amplifier is 1GHz～18GHz.
6. less radio-frequency EMC emission test system as claimed in claim 1, it is characterised in that also include supplying
Electric unit, said supply unit is connected with described preamplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139119.1U CN205510065U (en) | 2016-02-24 | 2016-02-24 | Wireless radio frequency radiation harasses test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620139119.1U CN205510065U (en) | 2016-02-24 | 2016-02-24 | Wireless radio frequency radiation harasses test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205510065U true CN205510065U (en) | 2016-08-24 |
Family
ID=56725813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620139119.1U Active CN205510065U (en) | 2016-02-24 | 2016-02-24 | Wireless radio frequency radiation harasses test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205510065U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541328A (en) * | 2019-01-14 | 2019-03-29 | 深圳市巴伦技术股份有限公司 | Low noise amplifier and electromagnetic compatibility test device |
-
2016
- 2016-02-24 CN CN201620139119.1U patent/CN205510065U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109541328A (en) * | 2019-01-14 | 2019-03-29 | 深圳市巴伦技术股份有限公司 | Low noise amplifier and electromagnetic compatibility test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Suzhou City, Jiangsu province 215006 Suzhou Hongye Industrial Park Loufeng high tech Development Zone, Road No. 99 Patentee after: DeKay certification services (Suzhou) Co., Ltd. Address before: Suzhou City, Jiangsu province 215006 Suzhou Hongye Industrial Park Loufeng high tech Development Zone, Road No. 99 Patentee before: QuieTek Technology (Suzhou) Co.,Ltd. |
|
| CP01 | Change in the name or title of a patent holder |