CN203039080U - Small portable near-field test antenna - Google Patents
Small portable near-field test antenna Download PDFInfo
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- CN203039080U CN203039080U CN 201220551078 CN201220551078U CN203039080U CN 203039080 U CN203039080 U CN 203039080U CN 201220551078 CN201220551078 CN 201220551078 CN 201220551078 U CN201220551078 U CN 201220551078U CN 203039080 U CN203039080 U CN 203039080U
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Abstract
The utility model relates to the technical field of electronic test and shielding effectiveness test and is a small portable near-field test antenna. The small portable near-field test antenna is characterized in that the small portable near-field test antenna at least comprises an insulation positioning rod, an insulation insertion structure and an annular near-field test antenna; the annular near-field test antenna is formed by communicating a front-end circular antenna radiator, a middle rod-shaped radio frequency circuit and a tail-end radio frequency coaxial connector and is wrapped by an insulated antenna cavity, and an insulation gap is arranged at the top end of the antenna radiator; holes are opened at the front end and the tail end of the insulation insertion structure, and the front-end ring of the annular near-field test antenna passes through the holes of the insulation insertion structure to make the insulation insertion structure stretch across the annular near-field test antenna; and the front end of the insulation insertion structure and the tail end of the insulation positioning rod are fixed in an insertion mode. The small portable near-field test antenna can be used for testing electric field signals and magnetic field signals and has the characteristics of high gain, wide frequency band, high sensitivity, small size, good versatility and the like.
Description
Technical field
The utility model relates to Electronic Testing and screening effectiveness technical field of measurement and test, is the portable near field of a kind of miniaturization test antenna.
Background technology
In order to adapt to the demand of modern electronic technology development, the research and development of antenna mainly develop towards small size, broadband, high-gain, adjustable direction.In recent years, in the electromagnetic compatibility 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 wideer, and low-frequency range is particularly intensive, and at present in this field employed screen imitate test antenna and mostly be narrow-band antenna, and volume is big, when the screening effectiveness of test wisp, often antenna can not be placed on inside cavity and carry out the screening effectiveness acceptance test, and the screening effectiveness of a cavity of need checking, then a reception antenna must be put into this inside cavity acceptance test, this just makes himself screening effectiveness of the little cavity of volume often can't be verified, therefore need a kind of can broadband test and the little portable wide band high-gain near-field test antenna of volume.
The utility model content
The purpose of this utility model provides the portable near field of a kind of miniaturization test antenna, can put into small-sized cavity march into the arena the test its screening effectiveness, be applicable to small-sized shielding cavity, rack, shielding camera bellows, shielded enclosure and the magnetic field of shielding shelter and the test of electric field shielding usefulness, the radiated interference that can be used for large scale electronic equipment and the system simultaneously test of stopping leakage in the roof.
The technical solution of the utility model is the portable near field of a kind of miniaturization test antenna, it is characterized in that: which comprises at least insulation backstay, insulation connected structure and annular near-field test antenna; Annular near-field test antenna is to be made of antenna radiator, the middle part of front end ring-type shaft-like the loop of rf and terminal radio frequency (RF) coaxial connector conducting, and the antenna chamber of outside wrap insulate, and the top of antenna radiator is provided with clearance for insulation; Front end and the end of insulation connected structure arrange porose, the front end annulus of annular near-field test antenna passes the hole of insulation connected structure, make the insulation connected structure across on annular near-field test antenna, insulation connected structure front end is pegged graft fixing with the end of insulation backstay.
The described annular test antenna of marching into the arena comprises radio frequency cable, antenna chamber, test handle and radio frequency (RF) coaxial connector; Antenna chamber is the hollow insulation shell of an end opening, and its front end is circle ring chamber, and openend has the test handle, and mid portion is shaft-like cavity; The first radio frequency cable is arranged in the semicircular ring of antenna chamber circle ring chamber, and its end is positioned at the junction of circle ring chamber and the shaft-like cavity of antenna chamber; The second radio frequency cable is arranged in second half circle ring chamber and shaft-like cavity of antenna chamber, and its end is positioned at the openend of antenna chamber, and the second radio frequency cable divides the formation the loop of rf in the shaft-like inside cavity of antenna chamber; The front end external loop layer overlap joint welding of the front end heart yearn of the second radio frequency cable and the first radio frequency cable, the first radio frequency cable and the second radio frequency cable form clearance for insulation at front end, the end of the first radio frequency cable and the second radio frequency cable all weld conducting in circle ring chamber and the shaft-like cavity junction of antenna chamber by outer loop and heart yearn, and the first radio frequency cable after the welding and the second radio frequency cable constitute the antenna radiator of ring-type; The test handle is wrapped in the terminal outside of the second radio frequency cable; Radio frequency (RF) coaxial connector is arranged on the openend of antenna chamber, and be embedded in the test handle end, the heart yearn of the second radio frequency cable rear end insert radio frequency (RF) coaxial connector inner and with the core welding conducting of radio frequency (RF) coaxial connector, the second radio frequency cable and radio frequency (RF) coaxial connector are fixed by 360 ° of welding of external loop layer.
Described insulation backstay is by the insulation cross bar and across being spliced to form at annular near field antenna insulation connected structure, the length range of insulation cross bar is 5 centimetres to 100 centimetres.
The diameter of described antenna radiator, namely the diameter of annular near-field test antenna front end annulus is 3 centimetres to 12 centimetres.
The type of described radio frequency (RF) coaxial connector is N-type, BNC type, SMA type or TNC type.
The described first radio frequency cable and the second radio frequency cable all are the radio frequency cables of half steel line or half gentle line, are made of external loop layer parcel heart yearn.
Described clearance for insulation is the external loop layer welding formation by the heart yearn of the second radio frequency cable and the first radio frequency cable, and the width of clearance for insulation is 1 millimeter to 4 millimeters.
Described test handle is the cylinder insulating rod.
The test frequency range of the portable near field of this miniaturization test antenna is 9kHz to 30MHz.
Characteristics of the present utility model are that an end of insulation backstay inserts the insulation connected structure that is fixed on the annular near field antenna body, have realized that insulation backstay and antenna body outer are at a distance of adjustable; Simultaneously the portable near field of this miniaturization test antenna can be tested two kinds of signals of electric field and magnetic field, has high-gain, broadband, highly sensitive, characteristics such as volume is little, versatility is good.
Description of drawings
Fig. 1 is the blast structural representation of the portable near field of a kind of miniaturization test antenna;
Fig. 2 is A place enlarged diagram among Fig. 1;
Fig. 3 is the surface structure schematic diagram of the portable near field of a kind of miniaturization test antenna.
Among the figure: 1, test handle; 2, antenna chamber; 3, antenna radiator; 4, insulation backstay; 5, insulation connected structure; 6, the loop of rf; 7, radio frequency (RF) coaxial connector; 8, clearance for insulation; 9, annular near-field test antenna.
Embodiment
The portable near field of a kind of miniaturization test antenna is characterized in that: which comprises at least insulation backstay 4, insulation connected structure 5 and annular near-field test antenna 9; Annular near-field test antenna 9 is to be made of antenna radiator 3, the middle part of front end ring-type shaft-like the loop of rf 6 and terminal radio frequency (RF) coaxial connector 7 conductings, and the antenna chamber 2 of outside wrap insulate, and the top of antenna radiator 3 is provided with clearance for insulation 8; Front end and the end of insulation connected structure 5 arrange porose, the front end annulus of annular near-field test antenna 9 passes the hole of insulation connected structure 5, make insulation connected structure 5 across on annular near-field test antenna 9, insulation connected structure 5 front ends are pegged graft fixing with the end of insulation backstay 4.
As Fig. 1, Fig. 2 and shown in Figure 3, the portable near field of a kind of miniaturization test antenna is by annular near-field test antenna 9, across the insulation connected structure 5 on annular near-field test antenna 9, and constitutes jointly with the fixing insulation backstay 4 of connected structure 5 front ends splicing that insulate.
Annular near-field test antenna 9 comprises two radio frequency cable, antenna chamber 2, test handle 1 and radio frequency (RF) coaxial connectors 7 that length is different.
The radio frequency cable is the radio frequency cable of half steel line or half gentle line, is made of external loop layer parcel heart yearn.
The first radio frequency cable bends in the semicircular ring that semicircular ring is arranged on antenna chamber 2 circle ring chambers, and its end is positioned at the junction of circle ring chamber and the shaft-like cavity of antenna chamber 2, and front end is positioned at the top of antenna chamber 2; The second radio frequency cable front end bends to semicircular ring, and the rear end is straight line, is arranged in second half circle ring chamber and shaft-like cavity of antenna chamber 2, and its end is positioned at the openend of antenna chamber 2.
The external loop layer overlap joint welding of the heart yearn of the second radio frequency cable front end and the first radio frequency cable front end, and the outer loop of the front end of the first radio frequency cable does not contact with the second radio frequency cable.After the front end welding, formed 1 millimeter to 4 millimeters clearance for insulation 8 at the front end of the first radio frequency cable and the second radio frequency cable.
The flex point of the end of the first radio frequency cable and the second radio frequency cable is by external loop layer and heart yearn welding conducting, and this flex point is positioned at the junction of circle ring chamber and the shaft-like cavity of antenna chamber.
After the complete welding, the first radio frequency cable and the second radio frequency cable have constituted antenna radiator 3 jointly, are used for the detection of electric current.The straight line portion of the second radio frequency cable has constituted the loop of rf 6.
Radio frequency (RF) coaxial connector 7 is arranged on the openend of antenna chamber 2, and be embedded in the test handle 1 end, the heart yearn of the second radio frequency cable ends, be the inside of the heart yearn insertion radio frequency (RF) coaxial connector 7 of the loop of rf 6 ends, and the welding of the heart yearn of the core of radio frequency (RF) coaxial connector and the loop of rf 6 ends is fixing.
The loop of rf 6 passes through the welding conducting with radio frequency (RF) coaxial connector 7, and the loop of rf 6 transfers to radio frequency (RF) coaxial connector 7 with detected signal.
Radio frequency (RF) coaxial connector 7 is also fixedlyed connected by 360 ° of welding of external loop layer with the loop of rf 6.
The type of radio frequency (RF) coaxial connector 7 can be N-type, BNC type, SMA type or TNC type.
Probe radiant body 3, the loop of rf 6 and radio frequency (RF) coaxial connector 7 common formation ring Ba Lun acceptance test devices make antenna under the prerequisite that keeps high-gain, have reduced volume greatly.
The front end annulus of annular near-field test antenna 9 passes the hole of forward and backward setting on the insulation connected structure 5, makes insulation connected structure 5 across on the body of annular near-field test antenna 9.
Insulation backstay 4 is by 5 centimetres to 100 centimetres different length insulation cross bar and across being spliced to form at annular near field antenna insulation connected structure 5, its length can be adjusted according to test request, to reach the effect of restriction antenna and system under test (SUT) measuring distance, can make antenna according to various criterion, carry out the screening effectiveness in electric field and magnetic field or the test of radiation leakage amount according to different measuring distances.
During test, adjust the length of insulation backstay 4 at first as required, test then, the higher-order of oscillation electric current that incoming signal produces at the antenna radiator 3 external loop layer outer surface of annular near-field test antenna 9, producing voltage drop at clearance for insulation 8 simultaneously is the output voltage of antenna, and sends receiver or frequency spectrograph to by inner wire.
Claims (9)
1. the portable near field of a miniaturization test antenna is characterized in that: which comprises at least insulation backstay (4), insulation connected structure (5) and annular near-field test antenna (9); Annular near-field test antenna (9) is to be made of the shaft-like the loop of rf (6) in antenna radiator (3), the middle part of front end ring-type and terminal radio frequency (RF) coaxial connector (7) conducting, and the antenna chamber of outside wrap insulate (2), the top of antenna radiator (3) is provided with clearance for insulation (8); Front end and the end of insulation connected structure (5) arrange porose, the front end annulus of annular near-field test antenna (9) passes the hole of insulation connected structure (5), make insulation connected structure (5) across on annular near-field test antenna (9), insulation connected structure (5) front end is pegged graft fixing with the end of insulation backstay (4).
2. according to the portable near field of a kind of miniaturization test antenna described in the claim 1, it is characterized in that: the described annular test antenna (9) of marching into the arena comprises radio frequency cable, antenna chamber (2), test handle (1) and radio frequency (RF) coaxial connector (7); Antenna chamber (2) is the hollow insulation shell of an end opening, and its front end is circle ring chamber, and openend has test handle (1), and mid portion is shaft-like cavity; The first radio frequency cable is arranged in the semicircular ring of antenna chamber (2) circle ring chamber, and its end is positioned at the circle ring chamber of antenna chamber (2) and the junction of shaft-like cavity; The second radio frequency cable is arranged in second half circle ring chamber and shaft-like cavity of antenna chamber (2), and its end is positioned at the openend of antenna chamber (2), and the second radio frequency cable divides formation the loop of rf (6) in the shaft-like inside cavity of antenna chamber (2); The front end external loop layer overlap joint welding of the front end heart yearn of the second radio frequency cable and the first radio frequency cable, the first radio frequency cable and the second radio frequency cable form clearance for insulation (8) at front end, the end of the first radio frequency cable and the second radio frequency cable all weld conducting in circle ring chamber and the shaft-like cavity junction of antenna chamber (2) by outer loop and heart yearn, and the first radio frequency cable after the welding and the second radio frequency cable constitute the antenna radiator (3) of ring-type; Test handle (1) is wrapped in the terminal outside of the second radio frequency cable; Radio frequency (RF) coaxial connector (7) is arranged on the openend of antenna chamber (2), and be embedded in the test handle (1) end, the heart yearn of the second radio frequency cable rear end insert radio frequency (RF) coaxial connector (7) inner and with the core welding conducting of radio frequency (RF) coaxial connector, the second radio frequency cable and radio frequency (RF) coaxial connector (7) are fixed by 360 ° of welding of external loop layer.
3. according to the portable near field of a kind of miniaturization test antenna described in the claim 1, it is characterized in that: described insulation backstay (4) is by the insulation cross bar and is spliced to form across the connected structure (5) that insulate in annular near field antenna that the length range of insulation cross bar is 5 centimetres to 100 centimetres.
4. according to the portable near field of a kind of miniaturization test antenna described in claim 1 or 2, it is characterized in that: the diameter of described antenna radiator (3), namely the diameter of annular near-field test antenna (9) front end annulus is 3 centimetres to 12 centimetres.
5. according to the portable near field of a kind of miniaturization test antenna described in claim 1 or 2, it is characterized in that: the type of described radio frequency (RF) coaxial connector (7) is N-type, BNC type, SMA type or TNC type.
6. according to the portable near field of a kind of miniaturization test antenna described in the claim 2, it is characterized in that: the described first radio frequency cable and the second radio frequency cable all are the radio frequency cables of half steel line or half gentle line, are made of external loop layer parcel heart yearn.
7. according to the portable near field of a kind of miniaturization test antenna described in claim 1 or 2, it is characterized in that: described clearance for insulation (8) is the external loop layer welding formation by the heart yearn of the second radio frequency cable and the first radio frequency cable, and the width of clearance for insulation (8) is 1 millimeter to 4 millimeters.
8. according to the portable near field of a kind of miniaturization test antenna described in the claim 2, it is characterized in that: described test handle (1) is the cylinder insulating rod.
9. according to the portable near field of a kind of miniaturization test antenna described in claim 1 or 2, it is characterized in that: the test frequency range of the portable near field of this miniaturization test antenna is 9kHz to 30MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551078 CN203039080U (en) | 2012-10-25 | 2012-10-25 | Small portable near-field test antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220551078 CN203039080U (en) | 2012-10-25 | 2012-10-25 | Small portable near-field test antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039080U true CN203039080U (en) | 2013-07-03 |
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ID=48691171
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220551078 Expired - Lifetime CN203039080U (en) | 2012-10-25 | 2012-10-25 | Small portable near-field test antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039080U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956952A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Design method of miniaturized portable type near filed testing antenna |
-
2012
- 2012-10-25 CN CN 201220551078 patent/CN203039080U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102956952A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Design method of miniaturized portable type near filed testing antenna |
| CN102956952B (en) * | 2012-10-25 | 2018-02-13 | 西安开容电子技术有限责任公司 | A kind of design method of Miniaturized portable near-field test antenna |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130703 |
|
| CX01 | Expiry of patent term |