CN206348396U - A kind of non-contact rotary device tested suitable for microwave antenna - Google Patents
A kind of non-contact rotary device tested suitable for microwave antenna Download PDFInfo
- Publication number
- CN206348396U CN206348396U CN201621214102.4U CN201621214102U CN206348396U CN 206348396 U CN206348396 U CN 206348396U CN 201621214102 U CN201621214102 U CN 201621214102U CN 206348396 U CN206348396 U CN 206348396U
- Authority
- CN
- China
- Prior art keywords
- probe
- groove
- waveguide
- choke groove
- waveguide choke
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
Abstract
The utility model is related to microwave test field, specifically related to a kind of non-contact rotary device tested suitable for microwave antenna, including left probe and right probe, left probe and right probe are arranged apart, and, signal is transmitted by gas each other, break through the conventional thought that antenna detection art personnel propagate electromagnetic wave with entity type objects, left probe and right probe transmit signal by gas each other, general transmits signal by air, i.e., the signal that left probe is sent is transferred to right probe by air, thus, when left probe rotates relative to right probe, friction will not be come in contact, thus, can avoid because friction and caused by bad connection and measure it is inaccurate, the lifetime caused by friction can be avoided；Also, due to not placing the parts of type in kind between left probe and right probe, that is, parts are eliminated, normal work is remained able in the case where omitting the parts, thereby, it is possible to save manufacturing cost.
Description
Technical field
The utility model is related to microwave test field, and in particular to a kind of contactless rotation tested suitable for microwave antenna
Rotary device.
Background technology
The performance test of antenna is general to be carried out in microwave dark room, it is however generally that, standard horn antenna is put in antenna to be measured
Opposite, it can be seen from Principle of Antenna, the main performance of test antenna does not need the polarization of standard horn feed matching, therefore not
Like-polarized antenna to be measured needs not like-polarized Feed Horn；For same linear polarized antenna, it is often necessary to test its pole
Change purity, at this time need feed to carry out the pattern characteristics of 90 ° of rotary test antennas to be measured；And for circular polarized antenna
Speech, it is often necessary to test its axle than directional diagram, this carrys out bigger puzzlement to calibration tape；To sum up require to test system cost and
Convenience brings certain puzzlement；Therefore, it is however generally that, the polarization needs of standard horn feed are adjustable, can take two kinds of hands
Section is obtained, and one is by a servo rotary mechanism, being on the other hand by installing one in feed rear end by feed
Individual rotary joint.For the former, it is necessary to the higher servo adjustment structure of running accuracy, in order to avoid coiling radius of turn is typically controlled
Make in the range of ± 180 °, and it is oversized, made troubles to test, it is difficult to obtain good performance.Latter dimensions are small, and feedback
Source is combined together, very convenient, still, and existing rotary joint is directly to contact left probe and right probe, or in left probe
Middle parts are set between right probe, and left probe and right probe are directly contacted with the intermediate member, in left probe
During being rotated against with right probe, it may occur that friction, in the course of time so that the connection contact of left probe and right probe
Location contacts are bad, so that the accuracy of measurement is influenceed, while also reducing service life.
Utility model content
The purpose of this utility model is：For the rotary joint currently used for microwave test due to friction damage the life-span
The problem of being reduced with performance almost may be used there is provided a kind of non-contact rotary device tested suitable for microwave antenna, frictional dissipation
To ignore, long lifespan and performance is not reduced with the passage of use time.
To achieve these goals, the technical solution adopted in the utility model is：
A kind of non-contact rotary device tested suitable for microwave antenna, including left probe and right probe, the left spy
Pin and the right probe are arranged apart, also, the left probe and the right probe transmit signal by gas each other.
Preferably, the rotating device also connects square wave guided mode, the right side including a left side connects square wave guided mode, left waveguide choke groove
Support and right waveguide choke groove support, the left probe are connected electrically in the left side and connect on square wave guided mode, and the right probe is electrically connected
It is connected on the right side to connect on square wave guided mode, the left side connects square wave guided mode and is fixedly connected with the left waveguide choke groove support, institute
State the right side and connect square wave guided mode and be fixedly connected with the right waveguide choke groove support, the left waveguide choke groove support passes through bearing portion
Part is connected with the right waveguide choke groove support, and left probe can be relative to the rotation of right probe, it is necessary to support the part of two part
It can rotate against, because contact rotation can produce friction, in order to reduce friction, this programme uses left waveguide choke groove support
It is connected by parts of bearings with right waveguide choke groove support, and is contactless connection, reduces left waveguide choke groove branch
Frame relative to right waveguide choke groove support rotate when the frictional dissipation that produces, it is to avoid friction damage it is too big and influence measurement accuracy and
Service life.
Preferably, the left waveguide choke groove support is provided with external groove, described right waveguide choke groove support one end is inserted
Enter in the external groove, the right waveguide choke groove rack outer surface has a fin, the parts of bearings include rolling bearing and
Thrust bearing, the rolling bearing is set on the right waveguide choke groove support, and is embedded in the left waveguide chokes simultaneously
In the external groove of groove support, the thrust bearing is provided between the fin and the left waveguide choke groove support, it is described convex
Rib is provided with thrust bearing, the left waveguide choke groove support detachably in the one side away from the left waveguide choke groove support
The end cap being provided with for covering the thrust bearing, the thrust bearing being capped is away from the left waveguide choke groove branch
The thrust bearing of frame, thus, be avoided that right waveguide choke groove support and left waveguide choke groove support because friction damage is too big and shadow
Ring measurement accuracy and service life.
Preferably, the external groove bottom surface is additionally provided with the first groove, the external groove coordinates first groove type
Into stepped hole, the right waveguide choke groove support is provided with the first groove corresponding with first groove, first groove
Cooperatively formed with the first groove for the waveguide mold chamber as wave guide mode.
Preferably, the left probe and the right probe include shaft-like supporter and are arranged on the supporter
Disc, the supporter is integral type structure with the disc, and signal energy is connect into rectangular waveguide by a left side using disc
Mode coupling is transferred to generator guide mould so that signal energy has more preferable transition.
It is electrically connected preferably, the left probe connects square wave guided mode through the left waveguide choke groove support with the left side
Connect, insulation sleeve is provided between the left probe and the left waveguide choke groove support.
It is electrically connected preferably, the right probe connects square wave guided mode through the right waveguide choke groove support with the right side
Connect, insulation sleeve is provided between the right probe and the right waveguide choke groove support, using disc by signal energy by gas
Bulk wave guided mode is transferred to the right side and connects square wave guided mode so that signal energy has more preferable transition.
Preferably, being provided with airway on the left waveguide choke groove support, the waveguide mold chamber and the external world are connected.
Preferably, the right waveguide choke groove support is provided with second groove, the second groove coordinates with the first groove
Form stepped hole, the first groove notch edges convex to form flange, the flange coordinates with the second groove, and with it is described
The side and bottom surface of second groove are arranged apart.
In summary, by adopting the above-described technical solution, the beneficial effect of the application is：Break through antenna detection field skill
Art personnel propagate the conventional thought of electromagnetic wave with entity type objects, and the application is arranged apart by left probe and right probe, left to visit
The parts of type in kind are not placed between pin and right probe, thus, left probe and right probe are transmitted by gas believe each other
Number, general transmits signal by air, i.e. the signal that left probe is sent is transferred to right probe by air, thus, is visited left
Pin relative to right probe rotate when, friction will not be come in contact, thereby, it is possible to avoid because of friction and caused by bad connection and measurement
It is inaccurate, the lifetime caused by friction can be avoided；Also, due to type in kind is not placed between left probe and right probe
Parts, that is, eliminate parts, normal work is remained able in the case where omitting the parts, thereby, it is possible to the system of saving
Cause this.
Brief description of the drawings
Fig. 1 is the half-section diagram of the application rotating device；
Fig. 2 is the half-section diagram of the left waveguide choke groove support of the application；
Fig. 3 is the half-section diagram of the right waveguide choke groove support of the application；
Marked in figure：The left probes of 1-, 1A- supporters, 1B- discs, the right probes of 2-, 2A- supporters, 2B- discs, 3-
A left side connects square wave guided mode, and the 4- right sides connect square wave guided mode, the left waveguide choke groove supports of 5-, 51- external grooves, the grooves of 52- first,
53- flanges, the grooves of 54- the 3rd, the right waveguide choke groove supports of 6-, 61- first grooves, 62- second grooves, 63- fins, 7- bearing portions
Airway in part, 71- rolling bearings, 72- thrust bearings, 8- generator guide moulds, 9-.11- insulation sleeves, 12- end caps.
Embodiment
Below in conjunction with the accompanying drawings, the utility model is described in detail.
In order that the purpose of this utility model, technical scheme and advantage are more clearly understood, below in conjunction with accompanying drawing and implementation
Example, the utility model is further elaborated.It should be appreciated that specific embodiment described herein is only to explain this
Utility model, is not used to limit the utility model.
A kind of non-contact rotary device tested suitable for microwave antenna, including left probe 1 and right probe 1, left probe 1
It is arranged apart with right probe 1, also, left probe 1 and right probe 1 transmit signal by gas each other, and this programme is visited left
Pin 1 and right probe 1 are arranged apart, do not place the parts of type in kind between left probe 1 and right probe 1, thus, the left He of probe 1
Right probe 1 transmits signal by gas each other, and general transmits signal by air, i.e. the signal that left probe 1 is sent leads to
Cross air and be transferred to right probe 1, thus, when left probe 1 rotates relative to right probe 1, friction, thus, energy will not be come in contact
Enough avoid because friction and caused by bad connection and measure it is inaccurate, the lifetime caused by friction can be avoided；Also, by
Do not place the parts of type in kind between left probe 1 and right probe 1, that is, eliminate parts, omit the feelings of the parts
Normal work is remained able under condition, thereby, it is possible to save manufacturing cost.
The application non-contact rotary device, which also connects square wave guided mode 3, the right side including a left side and connects square wave guided mode 4, left waveguide, to be gripped
Chute support 5 and right waveguide choke groove support 6, left probe 1 are connected electrically in a left side and connect on square wave guided mode 3, and right probe 1 is connected electrically in
The right side is connect on square wave guided mode 4, and a left side connects square wave guided mode 3 and is fixedly connected with left waveguide choke groove support 5, and the right side connects square wave guided mode 4
It is fixedly connected with right waveguide choke groove support 6, left waveguide choke groove support 5 passes through parts of bearings 7 and right waveguide choke groove support 6
Non-contacting connection a, left side connects square wave guided mode 3, the right side and connects square wave guided mode 4, left waveguide choke groove support 5 and right waveguide choke groove
Support 6 is that conductive material is made, and left probe 1 can be rotated relative to right probe 1, it is necessary to support the part of two part being capable of phase
To rotation, because contact rotation can produce friction, in order to reduce friction, this programme is passed through using left waveguide choke groove support 5
Parts of bearings 7 is connected with right waveguide choke groove support 6, and is contactless connection, to reduce left waveguide choke groove support 5
The frictional dissipation produced when being rotated relative to right waveguide choke groove support 6, it is to avoid friction damage it is too big and influence measurement accuracy and
Service life.
Further, left waveguide choke groove support 5 is provided with external groove 51, and institute is inserted in right one end of waveguide choke groove support 6
State in external groove 51, also, the right outer surface of waveguide choke groove support 6 is provided with fin 63, and parts of bearings 7 includes rolling bearing 71
With thrust bearing 72, rolling bearing is set on right waveguide choke groove support 6, and is embedded in left waveguide choke groove support 5 simultaneously
External groove 51 in, be provided with thrust bearing 72 between fin 63 and left waveguide choke groove support 5, fin 63 is gripped away from left waveguide
Dismountable be provided with is provided with thrust bearing 72, left waveguide choke groove support 5 in the one side of chute support 5 for capping to stop
The end cap 12 of thrust bearing 72, the thrust bearing 72 being capped is the thrust bearing 72 away from left waveguide choke groove support 5.Pass through
Rolling bearing avoids circumferencial direction of the right waveguide choke groove support 6 with left waveguide choke groove support 5 in pivot center from producing slip
Friction, avoids right waveguide choke groove support 6 with left waveguide choke groove support 5 perpendicular to pivot center by double thrust bearing 72
Plane in occur sliding friction, thus, be avoided that right waveguide choke groove support 6 and left waveguide choke groove support 5 are damaged because of friction
It is bad to influence measurement accuracy and service life greatly very much.
Further, the bottom surface of external groove 51 is additionally provided with the first groove 52, and external groove 51 coordinates the first groove 52 formation platform
Rank hole, right waveguide choke groove support 6 is provided with the first groove 61 corresponding with the first groove 52, the first groove 52 and first groove 61
It is arranged apart and cooperatively form for the generator guide mould 8 as wave guide mode, to avoid producing sliding friction, left waveguide choke groove
Support 5 and right waveguide choke groove support 6 are contactless connection, and thus the first groove 52 and first groove 61 are arranged apart, i.e., the
The notch of the notch and first groove 61 of one groove 52 is spaced apart, it is to avoid spillover, particularly, during the distance is approximately equal to
1/4 wavelength of frequency of heart, it is determined that this apart from when, tester can first determine distance centered on frequency 1/4 wavelength, then
It is finely adjusted according to test structure, untill transmission performance is suitable, according to electromagnetism field impedance shift theory, the short-circuit face 1/ of distance
The position of 4 wavelength is equivalent to open circuit surface, and the position apart from the wavelength of open circuit surface 1/4 is equivalent to short-circuit face, due to gap length about etc.
In 1/4 wavelength of centre frequency, therefore this structure is short-circuit for the electromagnetic wave of relevant work frequency, and Approximate Equivalent is not in having
Apertured situation.
Particularly, generator guide mould 8 is cylinder, thus, is rotationally symmetrical, can guarantee that isotropism, if rectangular
The bodily form, then can cause polarization loss, when polarization orthogonal, may only have less energy to transmit, particularly, the cylinder
The design of the size of the diameter of shape is it has to be ensured that electromagnetic wave is not in cut-off in frequency range, it is ensured that good efficient biography
Broadcast, meanwhile, cylindrical length considers to have to suppress due to higher mode caused by transition portion, so as to lift required electromagnetic wave
Purity.
Further, left probe 1 and right probe 1 include shaft-like supporter and the disk being arranged on the supporter
Part, is connect square wave guided mode 3 from a left side by electric signal by supporter and is transferred to disc, connect signal energy by a left side using disc
Square wave guided mode 3 is transferred to generator guide mould 8 so that signal energy has more preferable transition.
Further, the connected mode of supporter and disc can be welded, threaded connection or other contact methods, especially
, supporter is that integral type structure, i.e. supporter are fabricated by with disc for integral type with disc, it is to avoid because of welding quality
Problem and influence electric signal Transfer Quality.
Left probe 1 connects square wave guided mode 3 with a left side through left waveguide choke groove support 5 and electrically connected, and left probe 1 is gripped with left waveguide
Insulation sleeve 11 is provided between chute support 5, it is to avoid left probe 1 is electrically connected with the formation of left waveguide choke groove support 5.
Further, right probe 1 connects square wave guided mode 4 with the right side through right waveguide choke groove support 6 and electrically connected, right probe 1
Insulation sleeve 11 is provided between right waveguide choke groove support 6, it is to avoid right probe 1 is electrically connected with the formation of right waveguide choke groove support 6
Connect, particularly, the material of insulation sleeve 11 is non-conducting material, including is not limited to following material：Polytetrafluoroethylene (PTFE), acrylic.
Particularly, left probe 1 and a left side are connect between square wave guided mode 3, right probe 1 and the right side are connect between square wave guided mode 4
So that by soldering connection, more particularly, the material of soldering is silver or gold, that is to say, that be bonded using silver paste or gold paste, i.e., left to visit
Pin 1 and it is left connect between square wave guided mode 3, right probe 1 and the right welding medium connect between square wave guided mode 4 are silver or gold, signal
Energy transmission effect is more preferable.
Further, airway, connection generator guide mould 8 and the external world are provided with left waveguide choke groove support 5, makes chamber
Wave guide mode can be full of air in real time, it is ensured that the propagation of signal energy.
Further, right waveguide choke groove support 6 is provided with second groove 62, and second groove 62 cooperatively forms platform with first groove 61
Rank hole, the notch edges of the first groove 52 convex to form flange 53, and flange 53 coordinates with second groove 62, and with the side of second groove 62
Arranged apart with bottom surface, generator guide mould 8 needs to communicate with the external world, and the side and bottom surface of flange 53 and second groove 62 separate cloth
Put, thereby, it is possible to allow generator guide mould 8 to be communicated by the passage of the formation arranged apart with the external world, due to flange 53 and second
The passage formed after groove 62 is U, the effect with chokes.
Further, the left part surface of waveguide choke groove support 5 be recessed to flange 53 formation the 3rd groove 54, flange 53 with
Airway 9 in side and the bottom surface formation arranged apart of second groove 62, the 3rd groove 54 passes through interior airway 9 and generator guide mould
8 communicate, and the 3rd groove 54 constitutes airway, connection generator guide mould 8 and the external world with interior airway 9.
What electromagnetic wave feed-in was fed out flows to process：A left side connects square wave guided mode 3 and the right side connects the size of square wave guided mode 4 for standard ripple
Jig cun, the feed-in of convenient electromagnetic ripple.A left side, which is connect in the rectangular recess of square wave guided mode 3, a metal step, left side feed-in
Electromagnetic wave enters metal probe by metal step by magnetic coupling, and by changing the height and width of metal step ladder, makes
Itself and regulate and realize good impedance matching with metal probe.Metal probe needle tip is bonded and metal by conductive silver paste
Step is connected, and metal probe 9 is exposed to cover insulation sleeve 11 in outer portion.The disc of metal probe gos deep into generator guide mould 8, enters
The electromagnetic wave for entering metal probe is coupled to the left-half of generator guide mould 8 by disc, similarly again from generator guide mould 8
Right half part is coupled to right probe 1, the right side and connects square wave guided mode 4 and feed out successively.Similarly also can right feed-in and a left side is fed out.
All any modifications, equivalent substitutions and improvements made within spirit of the present utility model and principle etc., all should be wrapped
It is contained within protection domain of the present utility model.
Claims (9)
1. a kind of non-contact rotary device tested suitable for microwave antenna, including left probe and right probe, it is characterised in that
The left probe and the right probe are arranged apart, also, the left probe and the right probe are passed by gas each other
Delivery signal.
2. non-contact rotary device according to claim 1, it is characterised in that also connect square wave guided mode, the right side including a left side
Square wave guided mode, left waveguide choke groove support and right waveguide choke groove support are connect, the left probe is connected electrically in the left side and connects square
On shape wave guide mode, the right probe is connected electrically in the right side and connect on square wave guided mode, and the left side connects square wave guided mode and the left side
Waveguide choke groove support is fixedly connected, and the right side connects square wave guided mode and is fixedly connected with the right waveguide choke groove support, described
Left waveguide choke groove support is connected by parts of bearings with the right waveguide choke groove support.
3. non-contact rotary device according to claim 2, it is characterised in that, the left waveguide choke groove branch is set up
External groove is equipped with, described right waveguide choke groove support one end is inserted in the external groove, the right waveguide choke groove support appearance
Face has fin, and the parts of bearings includes rolling bearing and thrust bearing, and the rolling bearing is set in the right waveguide and gripped
On chute support, and it is embedded in simultaneously in the external groove of the left waveguide choke groove support, the fin is gripped with the left waveguide
The thrust bearing is provided between chute support, the fin is provided with the one side away from the left waveguide choke groove support
Dismountable end cap being provided with for covering the thrust bearing, the quilt on thrust bearing, the left waveguide choke groove support
The thrust bearing of capping is the thrust bearing away from the left waveguide choke groove support.
4. non-contact rotary device according to claim 3, it is characterised in that, the external groove bottom surface is additionally provided with
First groove, the external groove coordinates the first groove formation stepped hole, and the right waveguide choke groove support is provided with and institute
The corresponding first groove of the first groove is stated, first groove is cooperatively formed for the waveguide as wave guide mode with the first groove
Mold chamber.
5. the non-contact rotary device according to claim 2-3 any one, it is characterised in that, the left probe and institute
Stating right probe includes shaft-like supporter and the disc being arranged on the supporter, and the supporter is with the disc
Integral structure.
6. the non-contact rotary device according to claim 2-3 any one, it is characterised in that, the left probe is passed through
The left waveguide choke groove support connects square wave guided mode with the left side and electrically connected, the left probe and the left waveguide choke groove branch
Insulation sleeve is provided between frame.
7. the non-contact rotary device according to claim 2-3 any one, it is characterised in that, the right probe is passed through
The right waveguide choke groove support connects square wave guided mode with the right side and electrically connected, the right probe and the right waveguide choke groove branch
Insulation sleeve is provided between frame.
8. non-contact rotary device according to claim 4, it is characterised in that, set on the left waveguide choke groove support
Airway is equipped with, the waveguide mold chamber and the external world is connected.
9. non-contact rotary device according to claim 8, it is characterised in that, the right waveguide choke groove support is set
There is second groove, the second groove cooperatively forms stepped hole with the first groove, and the first groove notch edges convex to form convex
Edge, the flange coordinates with the second groove, and arranged apart with the side and bottom surface of the second groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621214102.4U CN206348396U (en) | 2016-11-10 | 2016-11-10 | A kind of non-contact rotary device tested suitable for microwave antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621214102.4U CN206348396U (en) | 2016-11-10 | 2016-11-10 | A kind of non-contact rotary device tested suitable for microwave antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206348396U true CN206348396U (en) | 2017-07-21 |
Family
ID=59316284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621214102.4U Withdrawn - After Issue CN206348396U (en) | 2016-11-10 | 2016-11-10 | A kind of non-contact rotary device tested suitable for microwave antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206348396U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324369A (en) * | 2016-11-10 | 2017-01-11 | 成都雷电微晶科技有限公司 | Non-contact type rotating device suitable for microwave antenna testing |
| CN107367642A (en) * | 2017-08-01 | 2017-11-21 | 北京航天光华电子技术有限公司 | It is a kind of measure waveguide circular polarizer axle than device |
| CN114839448A (en) * | 2022-04-15 | 2022-08-02 | 电子科技大学 | High-power microwave on-line measuring device based on choking coupling structure |
-
2016
- 2016-11-10 CN CN201621214102.4U patent/CN206348396U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106324369A (en) * | 2016-11-10 | 2017-01-11 | 成都雷电微晶科技有限公司 | Non-contact type rotating device suitable for microwave antenna testing |
| CN106324369B (en) * | 2016-11-10 | 2023-06-27 | 成都雷电微晶科技有限公司 | Non-contact rotary device suitable for microwave antenna test |
| CN107367642A (en) * | 2017-08-01 | 2017-11-21 | 北京航天光华电子技术有限公司 | It is a kind of measure waveguide circular polarizer axle than device |
| CN107367642B (en) * | 2017-08-01 | 2019-06-18 | 北京航天光华电子技术有限公司 | A kind of device measuring waveguide circular polarizer axis ratio |
| CN114839448A (en) * | 2022-04-15 | 2022-08-02 | 电子科技大学 | High-power microwave on-line measuring device based on choking coupling structure |
| CN114839448B (en) * | 2022-04-15 | 2023-05-02 | 电子科技大学 | High-power microwave on-line measuring device based on choke coupling structure |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN206348396U (en) | A kind of non-contact rotary device tested suitable for microwave antenna | |
| CN205122774U (en) | Antenna and sensor | |
| US20170215274A1 (en) | Impedance compensation structure for broadband near-field magnetic-field probe and its construction method | |
| CN104931799A (en) | On-chip antenna electrical property test system and method | |
| CN108445302B (en) | High-sensitivity near-field resonance electric field test probe loaded with T-shaped electrode | |
| CN205752911U (en) | Wearable intelligent equipment and attachment structure thereof | |
| US20140176274A1 (en) | Antenna with a concentrated magnetic field | |
| CN106324369A (en) | Non-contact type rotating device suitable for microwave antenna testing | |
| CN205594079U (en) | Be used for electrostatic field measuring optic fibre fabry - perot electric -field sensor | |
| KR100238446B1 (en) | Ctl(circular transmission line) cell | |
| CN103123335A (en) | Large-size ring unit magnetic powder inspection magnetizer and manufacturing method thereof | |
| CN208109945U (en) | A kind of circuit board and antenna measurement tooling for auxiliary antenna test | |
| CN106290997A (en) | High frequency measurement bar | |
| CN209043947U (en) | A kind of superconducting tape test device | |
| CN202916306U (en) | Broadband current test caliper device | |
| CN205015372U (en) | Piece formula subassembly elasticity test fixture | |
| CN108011171A (en) | A kind of broadband dielectric resonator | |
| CN207883885U (en) | A kind of microstrip coupled ring of resonant cavity | |
| CN203444019U (en) | Ultrahigh-frequency sensor and detecting device | |
| CN209598567U (en) | A kind of auxiliary device based on the welding of RF coaxial head | |
| TWI515436B (en) | Detect fixture | |
| CN207358358U (en) | A kind of battery automatic soldering device | |
| CN110247021A (en) | A kind of lithium battery polar plate production equipment using mobile steering principle | |
| CN103675465A (en) | Complex dielectric constant measuring device and method based on wireless energy transmission principle | |
| CN216718556U (en) | Distribution network line loss investigation detection device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170721 Effective date of abandoning: 20230627 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170721 Effective date of abandoning: 20230627 |