CN202916359U - Radio frequency leakage test device - Google Patents
Radio frequency leakage test device Download PDFInfo
- Publication number
- CN202916359U CN202916359U CN 201220551079 CN201220551079U CN202916359U CN 202916359 U CN202916359 U CN 202916359U CN 201220551079 CN201220551079 CN 201220551079 CN 201220551079 U CN201220551079 U CN 201220551079U CN 202916359 U CN202916359 U CN 202916359U
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- radio
- radio frequency
- test
- frequency leakage
- receiving antenna
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Abstract
The utility model relates to the technical field of electronic tests and radio frequency leakage tests, and discloses a radio frequency leakage test device. The radio frequency leakage test device comprises a radio frequency conversion device, a receiving antenna, a receiver, a signal source, coaxial cables and a shielding room. The radio frequency leakage test device is characterized in that the radio frequency conversion device is in conduction with the signal source through a coaxial cable, the radio frequency conversion device and the signal source are arranged outside the shielding room, the radio frequency conversion device is fixed at the position of a test via hole in the wall of the shielding room through a flange; the receiving antenna is in conduction with the receiver through a coaxial cable, the receiving antenna and the receiver are arranged inside the shielding room, the receiving antenna faces the test via hole in the wall of the shielding room directly, the distance between the top of the receiving antenna and the test via hole is D; and the radio frequency leakage test is performed according to three steps, including the direct conduction value measuring step, the actual value measuring step and the radio frequency leakage calculation step. According to the radio frequency leakage test method, the test result is acquired by subtracting the actual receiving value from the direct conduction value, so the final test result has advantages of high accuracy and small error.
Description
Technical field
The utility model relates to Electronic Testing and radio-frequency leakage measures the examination technical field, is a kind of radio-frequency leakage proving installation.
Background technology
In recent years, in electromagnetic compatibility and the communications field, anti-electromagnetic interference performance for product requires more and more higher, because the electromagnetic interference (EMI) emissions frequency range of each electronic product is more and more wider, the high band interfering frequency is more and more, this is so that the anti-electromagnetic interference capability of the Related products such as some radio frequency bindiny mechanisms requires more and more stricter, and the ability that determines its anti-electromagnetic interference (EMI) in space often depends on the external leakage rate of its equipment cavity self, because modern electronic equipment develops towards miniaturization, thereby so that some radio frequency connectors, the radio-frequency devices such as waveguide or waveguide switch can't accurately test out the radio-frequency leakage amount of himself.Therefore, verify the radio-frequency leakage amount of the radio-frequency devices such as some radio frequency connectors, waveguide or waveguide switch in the urgent need to a kind of radio-frequency leakage proving installation.
Summary of the invention
The purpose of this utility model provides a kind of radio-frequency leakage proving installation, by using the combination of receiving antenna and radio frequency conversion equipment, is applicable to the radio-frequency leakage test of the radio-frequency devices such as radio frequency connector, waveguide or waveguide switch.
The technical solution of the utility model is a kind of radio-frequency leakage proving installation, it comprises radio frequency conversion equipment, receiving antenna, receiving instrument, signal source, coaxial cable and screened room, it is characterized in that: the radio frequency conversion equipment is by coaxial cable and signal source conducting, they are arranged on outside the screened room, and the radio frequency conversion equipment is fixed on the test via hole place of screened room body of wall by flange; Receiving antenna is by coaxial cable and receiving instrument conducting, and they are arranged in the screened room, and receiving antenna is over against the test via hole of screened room body of wall, and the distance between receiving antenna top and test via hole is D.
Described radio frequency conversion equipment is Waveguide coaxial conversion equipment, bi-directional RF connector or bidirectional metal shield electric-connector, its middle part is provided with metal flange, exterior wall by screw and screened room is fixed, and installs conductive gasket additional between the exterior wall of metal flange and screened room.
Described receiving antenna is toroidal magnetic field test antenna, dipole antenna or microwave horn antenna, and it receives the test frequency range is 9KHz to 40GHz.
Described receiving instrument is receiver or frequency spectrograph.
Described signal source is function signal generator, modulation signal generator or broadband signal source.
Described coaxial cable is the coaxial cable that can satisfy 9KHz to 40GHz test.
Described screened room is electromagnetic shielding chamber, shielded anechoic chamber or semi-anechoic chamber.
Distance D between described receiving antenna top and test via hole is less than or equal to 30 centimetres.
But characteristics of the present utility model are the radio-frequency leakage amounts that go out measured device by the isolation of radio frequency conversion equipment, screened room, receiving instrument Validity Test, owing to having adopted straight-through value (value that receiving instrument receives during without measured device) to deduct the method for testing of actual reception value, so that test net result precision is high, error is little.
Description of drawings
Below in conjunction with embodiment the utility model is further described.
Fig. 1 is during without measured device, the structural representation of radio-frequency leakage test.
Fig. 2 is when measured device is arranged, the structural representation of radio-frequency leakage test.
Among the figure: 1, radio frequency conversion equipment; 2, receiving antenna; 3, receiving instrument; 4, signal source; 5, coaxial cable; 6, screened room; 7, measured device; D, receiving antenna top and the distance of testing via hole.
Embodiment
A kind of radio-frequency leakage proving installation, it comprises radio frequency conversion equipment 1, receiving antenna 2, receiving instrument 3, signal source 4, coaxial cable 5 and screened room 6.
As shown in Figure 1, radio frequency conversion equipment 1 is by coaxial cable 5 and signal source 4 conductings, and they are arranged on outside the screened room 6.Radio frequency conversion equipment 1 is by being fixed on the test via hole place of screened room 6 bodies of wall, and its middle part is provided with metal flange, fixes by the exterior wall of screw and screened room 6, installs conductive gasket additional between the exterior wall of metal flange and screened room 6.
Radio frequency conversion equipment 1 is Waveguide coaxial conversion equipment, bi-directional RF connector or bidirectional metal shield electric-connector.
Receiving antenna 2 is by coaxial cable 5 and receiving instrument 3 conductings, and they are arranged in the screened room 6.Receiving antenna 2 is over against the test via hole of screened room 6 bodies of wall, and the distance between receiving antenna 2 tops and test via hole is D, and D is less than or equal to 30cm.
Receiving antenna 2 is toroidal magnetic field test antenna, dipole antenna or microwave horn antenna, and it receives the test frequency range is 9KHz to 40GHz.
Receiving instrument 3 is receiver or frequency spectrograph.
The coaxial cable 5 that connects each several part in the device is the coaxial cables that can satisfy 9KHz to 40GHz test.
When radio frequency conversion equipment 1, emitting antenna 2, receiving instrument 3, signal source 4, coaxial cable 5 and screened room 6 according to above-mentioned method after setting completed, can carry out the test of radio-frequency leakage.
This radio-frequency leakage method of testing is carried out according to following step:
The method of testing that value (value that receiving instrument receives during without measured device) deducts actual reception value is led directly in this employing, so that test net result precision is high, error is little.
The parts that the present embodiment is not described in detail and structure belong to well-known components and common structure or the conventional means of the industry, here not one by one narration.
Claims (8)
1. radio-frequency leakage proving installation, it comprises radio frequency conversion equipment (1), receiving antenna (2), receiving instrument (3), signal source (4), coaxial cable (5) and screened room (6), it is characterized in that: radio frequency conversion equipment (1) is by coaxial cable (5) and signal source (4) conducting, they are arranged on outside the screened room (6), and radio frequency conversion equipment (1) is fixed on the test via hole place of screened room (6) body of wall by flange; Receiving antenna (2) is by coaxial cable (5) and receiving instrument (3) conducting, and they are arranged in the screened room (6), and receiving antenna (2) is over against the test via hole of screened room (6) body of wall, and the distance between receiving antenna (2) top and test via hole is D.
2. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: described radio frequency conversion equipment (1) is Waveguide coaxial conversion equipment, bi-directional RF connector or bidirectional metal shield electric-connector, its middle part is provided with metal flange, exterior wall by screw and screened room (6) is fixed, and installs conductive gasket additional between the exterior wall of metal flange and screened room (6).
3. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: described receiving antenna (2) is toroidal magnetic field test antenna, dipole antenna or microwave horn antenna, it receives test frequency range is 9KHz to 40GHz.
4. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: described receiving instrument (3) is receiver or frequency spectrograph.
5. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: described signal source (4) is function signal generator, modulation signal generator or broadband signal source.
6. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: described coaxial cable (5) is the coaxial cable that can satisfy 9KHz to 40GHz test.
7. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: described screened room (6) is electromagnetic shielding chamber, shielded anechoic chamber or semi-anechoic chamber.
8. a kind of radio-frequency leakage proving installation described in according to claim 1, it is characterized in that: the distance D between described receiving antenna (2) top and test via hole is less than or equal to 30 centimetres.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551079 CN202916359U (en) | 2012-10-25 | 2012-10-25 | Radio frequency leakage test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551079 CN202916359U (en) | 2012-10-25 | 2012-10-25 | Radio frequency leakage test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202916359U true CN202916359U (en) | 2013-05-01 |
Family
ID=48164662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220551079 Expired - Fee Related CN202916359U (en) | 2012-10-25 | 2012-10-25 | Radio frequency leakage test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202916359U (en) |
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2012
- 2012-10-25 CN CN 201220551079 patent/CN202916359U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20130501 Termination date: 20141025 |
|
| EXPY | Termination of patent right or utility model |