CN105261815B - A kind of waveguide with working frequency range adjustable function and microwave transition circuit - Google Patents
A kind of waveguide with working frequency range adjustable function and microwave transition circuit Download PDFInfo
- Publication number
- CN105261815B CN105261815B CN201510698888.5A CN201510698888A CN105261815B CN 105261815 B CN105261815 B CN 105261815B CN 201510698888 A CN201510698888 A CN 201510698888A CN 105261815 B CN105261815 B CN 105261815B
- Authority
- CN
- China
- Prior art keywords
- waveguide
- metal
- hole
- circuit
- frequency range
- 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.)
- Active
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The present invention relates to a kind of waveguide with working frequency range adjustable function and microwave transition circuit, solve that Waveguide-microbelt transition circuit dimensional tolerance is small and the nonadjustable defect of working frequency range compared with prior art.Tetrafluoro set is inserted with the metal cylinder passage of the present invention, one end of tetrafluoro set and the lower surface of microstrip circuit completely attach to, the other end of tetrafluoro set completely attaches to the lower surface of waveguide through hole, the center of circle of manhole, insulated vias and tetrafluoro set three corresponds to up and down, the front end of metal probe is inserted in tetrafluoro set by the manhole of circular metal land, and the tail end of metal probe is fixedly mounted on microstrip circuit；Rectangular metal block is movably arranged on the output end of waveguide through hole, and profile, the size in rectangular metal block section are identical with waveguide through hole section.Achievable transmission of the different frequency range microwave signal between rectangular waveguide and microstrip transmission line of the present invention, has circuit size tolerance big and the adjustable prominent characteristic of working frequency range.
Description
Technical field
It is specifically a kind of with working frequency range adjustable function the present invention relates to microwave and millimeter wave device arts
Waveguide and microwave transition circuit.
Background technology
In microwave and millimeter wave, microstrip line is a kind of highly important transmission form in microwave integrated circuit, but at present
The interface of many millimeter wave test systems and device uses rectangular waveguide, and therefore, waveguide-microstrip transition circuit widely should
For in the detection and waveguide of millimeter wave monolithic integrated circuit and hybrid circuit and the connection of planar circuit, so that two kinds of transmission
There is good matching transition between line.One of therefore key technology that waveguide-microstrip transition technology is realized as system, by wide
General research.
And as microwave and millimeter wave test system and device operating frequencies constantly develop to high band, common waveguide-micro-
For band transition circuit due to its nonadjustable characteristic, often being faced with mismachining tolerance influences circuit working frequency range, even result in waveguide,
The problem of deteriorating is matched between two kinds of transmission lines of micro-strip.How a kind of waveguide-microwave that can be operated frequency range fine setting is developed
Transition circuit has become the technical problem for being badly in need of solving.
The content of the invention
The invention aims to solve waveguide in the prior art-microstrip transition circuit size tolerance it is small and work frequency
The nonadjustable defect of section, there is provided a kind of waveguide with working frequency range adjustable function solves above-mentioned ask with microwave transition circuit
Topic.
To achieve these goals, technical scheme is as follows：
A kind of waveguide with working frequency range adjustable function and microwave transition circuit, including metallic cavity structure, wire chamber
The upper lateral of body structure is provided with cavity, and the top is that have the critical localisation overlapped, metal with metallic cavity structure upper surface
Waveguide through hole is transversely provided with the middle part of cavity body structure, waveguide through hole is parallel with both cavitys, is longitudinally set in metallic cavity structure
There is metal cylinder passage and metal cylinder passage is perpendicular with waveguide through hole and cavity respectively, metal cylinder passage leads to waveguide
Hole and cavity communicate,
Microstrip circuit is installed, the output end of microstrip circuit is 50 Ω microstrip transmission lines, microstrip circuit in described cavity
Input be circular metal land, circular metal land is provided with manhole, and the ground metal layer of microstrip circuit is provided with
Insulated vias, the diameter of insulated vias are more than manhole, and the ground metal layer of microstrip circuit is welded on the upper surface of cavity；
Tetrafluoro set is inserted with described metal cylinder passage, one end of tetrafluoro set and the lower surface of microstrip circuit connect completely
Touch, the other end of tetrafluoro set completely attaches to the lower surface of waveguide through hole, the circle of manhole, insulated vias and tetrafluoro set three
Lower corresponding in the heart, the front end of metal probe is inserted in tetrafluoro set by the manhole of circular metal land, the tail of metal probe
End is fixedly mounted on microstrip circuit；Rectangular metal block is movably arranged on the output end of waveguide through hole, rectangular metal block section
Profile, size it is identical with waveguide through hole section.
The bottom of described metallic cavity structure is provided with screwed hole, and screwed hole is located at the lower section of rectangular metal block, locking screw
Nail is arranged on screwed hole and is against on rectangular metal block.
The described a length of 25mm of waveguide through hole, a width of 10.67mm, a height of 4.32mm, metal cylinder passage it is a diameter of
2.4mm, the depth of cavity is 8mm, length 15mm, width 8mm, and the dielectric substrate of microstrip circuit is Rogers5880, micro-
Dielectric substrate thickness with circuit is 0.254mm, and 50 Ω microstrip transmission lines line widths of microstrip circuit output end are 0.76mm, circular
A diameter of 1.5mm of metal pad, a diameter of 2mm of insulated vias.
The tail end of described metal probe is a length of 1mm, a width of 0.7mm, a height of 0.5mm rectangular configuration, metal probe
A diameter of 0.7mm of front end.
The internal diameter of described tetrafluoro set is identical with the external diameter of metal probe, and the external diameter that tetrafluoro covers is interior with metal cylinder passage
Footpath is identical.
Beneficial effect
A kind of waveguide with working frequency range adjustable function of the present invention and microwave transition circuit, compared with prior art may be used
Transmission of the different frequency range microwave signal between rectangular waveguide and microstrip transmission line is realized, has circuit size tolerance big and works
The adjustable prominent characteristic of frequency range, reduces microwave system（Particularly submillimeter wave, millimeter wave microwave system）Build difficulty.Have
The characteristics of simple in construction, easy processing, signal transmission attenuation are small, working frequency range is adjustable.
Brief description of the drawings
Fig. 1 is the structural perspective of the present invention；
Fig. 2 is the side sectional view of the present invention；
Fig. 3 is manhole and the schematic enlarged-scale view of insulated vias joint in the present invention；
Fig. 4 be in the present invention tetrafluoro set inner ring apart from rectangular metal block be 2.47mm when circuit parameter analysis chart；
Fig. 5 be in the present invention tetrafluoro set inner ring apart from rectangular metal block be 2.13mm when circuit parameter analysis chart；
Wherein, 1- metallic cavities structure, 2- microstrip circuits, 3- metal probes, 4- metal cylinders passage, 5- waveguides through hole,
6- screwed holes, 7- lock-screws, 8- rectangular metals block, 9- cavitys, 10- tetrafluoros set, 11- circular metal lands, 12- are circular logical
Hole, 13- insulated vias.
Embodiment
The effect of to make to architectural feature of the invention and being reached, has a better understanding and awareness, to preferable
Embodiment and accompanying drawing coordinate detailed description, are described as follows：
As depicted in figs. 1 and 2, a kind of waveguide with working frequency range adjustable function of the present invention and microwave transition electricity
Road, including metallic cavity structure 1, the upper lateral of metallic cavity structure 1（It is horizontal）Provided with cavity 9, the top is and wire chamber
Body structure upper surface has the critical localisation overlapped, and cavity 9 is used to connect microstrip line, and the middle part of metallic cavity structure 1 is horizontal（Water
It is flat）Provided with waveguide through hole 5, waveguide through hole 5 is used to connect rectangular waveguide.The longitudinal direction of metal cylinder passage 4（Vertically）It is arranged on metal
On cavity body structure 1, metal cylinder passage 4, waveguide through hole 5 and cavity 9 can be knot of the solidification design in metallic cavity structure 1
Structure, respectively positioned at the longitudinal middle part, upper transverse portion and lateral middle of metallic cavity structure 1, long L, wide a, the high b of waveguide through hole 5
Respectively 25mm, 10.67mm, 4.32mm, depth h4, length L4, the wide w4 of cavity 9 are respectively 8mm, 15mm, 8mm, and waveguide is led to
Both hole 5 and cavity 9 are parallel.Metal cylinder passage 4 is perpendicular with waveguide through hole 5 and cavity 9 respectively, metal cylinder passage 4
Diameter of phi d2 be 2.4mm, metal cylinder passage 4 is used for the installation of tetrafluoro set 10, and it is communicated with waveguide through hole 5 and cavity 9.
Microstrip circuit 2 is installed, microstrip circuit 2 can be Rogers5880, the dielectric substrate of microstrip circuit 2 in cavity 9
Thickness h be 0.254mm.The output end of microstrip circuit 2 is 50 Ω microstrip transmission lines, and 50 Ω microstrip transmission line line widths w are
0.76mm.The input of microstrip circuit 2 is circular metal land 11, and the diameter of phi d 3 of circular metal land 11 is 1.5mm.Such as
Shown in Fig. 3, circular metal land 11 is provided with manhole 12, for passing through for metal probe 3.The ground connection gold of microstrip circuit 2
Category layer is welded on the upper surface of cavity 9, and the ground metal layer of microstrip circuit 2 is provided with insulated vias 13, insulated vias 13 it is straight
Footpath Φ d 3 can be 2mm, the i.e. bottom in microstrip circuit 2（Ground metal layer）On set a hole, the diameter of insulated vias 13 is big
In manhole 12, to avoid the ground metal layer of microstrip circuit 2 from being in contact with metal probe 3.
Tetrafluoro set 10 is inserted with metal cylinder passage 4, the external diameter of tetrafluoro set 10 is identical with the internal diameter of metal cylinder passage 4,
One end of tetrafluoro set 10 completely attaches to the lower surface of microstrip circuit 2, the lower surface of the other end and waveguide through hole 5 of tetrafluoro set 10
Completely attach to, i.e. the circumference at 10 both ends of tetrafluoro set respectively connects with the lower surface of microstrip circuit 2 or the lower surface of waveguide through hole 5
Touch.The center of circle that manhole 12, insulated vias 13 and tetrafluoro cover 10 threes corresponds to up and down, in order to the insertion of metal probe 3.Gold
The tail end of category probe 3 can be rectangular configuration, i.e. rectangular metal block, rectangular metal block length L4, wide w4, high h4 be respectively 1mm,
0.7mm, 0.5mm, the diameter of phi d1 of the front end of metal probe 3 is 0.7mm.The front end of metal probe 3 passes through circular metal land 11
Manhole 12 be inserted in tetrafluoro set 10 in, tetrafluoro set 10 internal diameter it is identical with the external diameter of metal probe 3, the tail of metal probe 3
End is fixedly mounted on microstrip circuit 2.Length h0 of the front end of metal probe 3 beyond the upper surface of waveguide through hole 5 is 2.03mm, when
So, here, metal probe 3 can be adjusted for different waveguide dimensions, to adapt to different waveguide scopes.
Rectangular metal block 8 is movably arranged on the output end of waveguide through hole 5, i.e. rectangular metal block 8 can be in waveguide through hole 5
Output end transverse shifting.Profile, the size in the section of rectangular metal block 8 are identical with the section of waveguide through hole 5, rectangular metal block
8 is wide, high equal with 5 wide a of waveguide through hole, high b respectively, and the length L1 of rectangular metal block 8 can be then 10mm.It is right for convenience
The fixation of rectangular metal block 8, the bottom of metallic cavity structure 1 can open a screwed hole 6, and screwed hole 6 also is located at rectangle gold simultaneously
Belong to the lower section of block 8, lock-screw 7 is arranged on screwed hole 6 and is against on rectangular metal block 8, rectangular metal block 8 is consolidated
It is fixed.
In actual use, when microwave signal is entered by waveguide through hole 5 and is transmitted in waveguide through hole 5, according to microwave
Signal electromagnet Field distribution characteristic, after appropriate regulation is positioned over the position L0 of rectangular metal block 8 of the end of waveguide through hole 5, by locking screw
Nail 7 screws in the position that screwed hole 6 fixes rectangle metal derby 8, and then microwave signal transmission short circuit is formed in the end of waveguide through hole 5
Face, realize microwave signal in the axially transmission cut-off of waveguide through hole 5.Now, led to by the metal probe 3 suitably chosen beyond waveguide
The length h0 of the upper surface of hole 5, realize that microwave signal is formed to by the tetrafluoro set 10 and metal probe 3 of loading metal cylinder passage 4
50 Ω coaxial circuits feeding, be then fed to 50 Ω microstrip circuits being connected with 50 Ω coaxial circuits, realize microwave signal
Mutually transmitted between rectangular waveguide and microstrip circuit.So as to according to different frequency range microwave signal electric field distribution characteristic, pass through regulation
Rectangular metal block 8 covers the distance L0 of 10 inner rings with tetrafluoro and metal probe 3 exceeds the length h0 of the upper surface of waveguide through hole 5, finally
Realize that different frequency range microwave signal is mutually transmitted between rectangular waveguide and microstrip circuit.As shown in figure 4, by heretofore described
Size, tetrafluoro cover inner ring apart from the distance L0 of rectangular metal block be 2.47mm when, using electromagnetic field simulation software HFSS build by
The circuit model that said structure parameter determines, analysis circuit S parameter, analysis result are as shown in Figure 4.Circle remote in tetrafluoro set is adjusted again
It is 2.13mm from rectangular metal block distance L0, reanalyses circuit S parameter, analysis result is as shown in Figure 5.Contrast circuit structure
S parameter analysis result Fig. 4 and Fig. 5 before and after adjustment, it can be deduced that transition circuit provided by the invention can realize different frequency range microwave
Transmission of the signal between rectangular waveguide and microstrip transmission line.
General principle, principal character and the advantages of the present invention of the present invention has been shown and described above.The technology of the industry
For personnel it should be appreciated that the present invention is not limited to the above embodiments, that described in above-described embodiment and specification is the present invention
Principle, various changes and modifications of the present invention are possible without departing from the spirit and scope of the present invention, these change and
Improvement is both fallen within the range of claimed invention.The protection domain of application claims by appended claims and its
Equivalent defines.
Claims (5)
1. a kind of waveguide with working frequency range adjustable function and microwave transition circuit, including metallic cavity structure（1）, wire chamber
Body structure（1）Upper lateral be provided with cavity（9）, the top is that have the critical potential overlapped with metallic cavity structure upper surface
Put, metallic cavity structure（1）Middle part be transversely provided with waveguide through hole（5）, waveguide through hole（5）With cavity（9）Both are parallel, gold
Belong to cavity body structure（1）Upper longitudinal direction is provided with metal cylinder passage（4）And metal cylinder passage（4）Respectively with waveguide through hole（5）And chamber
Body（9）It is perpendicular, metal cylinder passage（4）With waveguide through hole（5）And cavity（9）Communicate, it is characterised in that：
Described cavity（9）Microstrip circuit is inside installed（2）, microstrip circuit（2）Output end be 50 Ω microstrip transmission lines, micro-strip
Circuit（2）Input be circular metal land（11）, circular metal land（11）It is provided with manhole（12）, microstrip circuit
（2）Ground metal layer be provided with insulated vias（13）, insulated vias（13）Diameter be more than manhole（12）, microstrip circuit
（2）Ground metal layer be welded on cavity（9）Upper surface；
Described metal cylinder passage（4）In be inserted with tetrafluoro set（10）, tetrafluoro set（10）One end and microstrip circuit（2）Following table
Face completely attaches to, tetrafluoro set（10）The other end and waveguide through hole（5）Lower surface completely attach to, manhole（12）, insulation
Through hole（13）With tetrafluoro set（10）The center of circle of three corresponds to up and down, metal probe（3）Front end pass through circular metal land（11）
Manhole（12）It is inserted in tetrafluoro set（10）It is interior, metal probe（3）Tail end be fixedly mounted on microstrip circuit（2）On；Rectangle
Metal derby（8）It is movably arranged on waveguide through hole（5）Output end, rectangular metal block（8）The profile in section, size are and waveguide
Through hole（5）Section is identical.
2. a kind of waveguide with working frequency range adjustable function according to claim 1 and microwave transition circuit, its feature
It is：Described metallic cavity structure（1）Bottom be provided with screwed hole（6）, screwed hole（6）Positioned at rectangular metal block（8）Under
Side, lock-screw（7）Installed in screwed hole（6）Go up and be against rectangular metal block（8）On.
3. a kind of waveguide with working frequency range adjustable function according to claim 1 and microwave transition circuit, its feature
It is：Described waveguide through hole（5）A length of 25mm, a width of 10.67mm, a height of 4.32mm, metal cylinder passage（4）Diameter
For 2.4mm, cavity（9）Depth be 8mm, length 15mm, width 8mm, microstrip circuit（2）Dielectric substrate be
Rogers5880, microstrip circuit（2）Dielectric substrate thickness be 0.254mm, microstrip circuit（2）The 50 Ω micro-strips transmission of output end
Line line width is 0.76mm, circular metal land（11）A diameter of 1.5mm, insulated vias（13）A diameter of 2mm.
4. a kind of waveguide with working frequency range adjustable function according to claim 1 and microwave transition circuit, its feature
It is：Described metal probe（3）Tail end for a length of 1mm, a width of 0.7mm, a height of 0.5mm rectangular configuration, metal probe
（3）A diameter of 0.7mm of front end.
5. a kind of waveguide with working frequency range adjustable function according to claim 1 and microwave transition circuit, its feature
It is：Described tetrafluoro set（10）Internal diameter and metal probe（3）External diameter it is identical, tetrafluoro set（10）External diameter and metal cylinder
Passage（4）Internal diameter it is identical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510698888.5A CN105261815B (en) | 2015-10-23 | 2015-10-23 | A kind of waveguide with working frequency range adjustable function and microwave transition circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510698888.5A CN105261815B (en) | 2015-10-23 | 2015-10-23 | A kind of waveguide with working frequency range adjustable function and microwave transition circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105261815A CN105261815A (en) | 2016-01-20 |
| CN105261815B true CN105261815B (en) | 2018-03-20 |
Family
ID=55101385
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510698888.5A Active CN105261815B (en) | 2015-10-23 | 2015-10-23 | A kind of waveguide with working frequency range adjustable function and microwave transition circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105261815B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107342459B (en) * | 2017-07-05 | 2020-07-28 | 电子科技大学 | Transition probe structure of thin-film microstrip antenna |
| CN108955932B (en) * | 2018-07-16 | 2020-04-21 | 北京无线电计量测试研究所 | Waveguide thermosensitive bolometer |
| CN109659694B (en) * | 2019-01-30 | 2023-09-29 | 京信通信技术(广州)有限公司 | Phase-shifting feed device and base station antenna |
| CN115000663B (en) * | 2022-07-29 | 2022-11-22 | 四川太赫兹通信有限公司 | Terahertz waveguide structure, middle cavity of terahertz waveguide structure, circuit structure and electronic equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1367668A1 (en) * | 2002-05-30 | 2003-12-03 | Siemens Information and Communication Networks S.p.A. | Broadband microstrip to waveguide transition on a multilayer printed circuit board |
| CN201204246Y (en) * | 2007-12-25 | 2009-03-04 | 电子科技大学 | Novel millimeter wave microstrip sealing transition apparatus |
| CN101436702A (en) * | 2008-12-12 | 2009-05-20 | 惠州市硕贝德通讯科技有限公司 | Waveguide-microstrip line transformation and power divider |
| CN101496279A (en) * | 2006-03-31 | 2009-07-29 | 国际商业机器公司 | Apparatus and methods for constructing and packaging waveguide to planar transmission line transitions for millimeter wave applications |
| CN205159481U (en) * | 2015-10-23 | 2016-04-13 | 中国电子科技集团公司第十六研究所 | Waveguide and microwave transition circuit with adjustable function of working frequency band |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6269127B2 (en) * | 2014-02-07 | 2018-01-31 | 富士通株式会社 | High frequency module and manufacturing method thereof |
-
2015
- 2015-10-23 CN CN201510698888.5A patent/CN105261815B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1367668A1 (en) * | 2002-05-30 | 2003-12-03 | Siemens Information and Communication Networks S.p.A. | Broadband microstrip to waveguide transition on a multilayer printed circuit board |
| CN101496279A (en) * | 2006-03-31 | 2009-07-29 | 国际商业机器公司 | Apparatus and methods for constructing and packaging waveguide to planar transmission line transitions for millimeter wave applications |
| CN201204246Y (en) * | 2007-12-25 | 2009-03-04 | 电子科技大学 | Novel millimeter wave microstrip sealing transition apparatus |
| CN101436702A (en) * | 2008-12-12 | 2009-05-20 | 惠州市硕贝德通讯科技有限公司 | Waveguide-microstrip line transformation and power divider |
| CN205159481U (en) * | 2015-10-23 | 2016-04-13 | 中国电子科技集团公司第十六研究所 | Waveguide and microwave transition circuit with adjustable function of working frequency band |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105261815A (en) | 2016-01-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105261815B (en) | A kind of waveguide with working frequency range adjustable function and microwave transition circuit | |
| CN104091992B (en) | Compact type double-frequency stub coupler based on substrate integrated coaxial line technology | |
| CN109216847B (en) | Microstrip vertical transition structure | |
| US10225925B2 (en) | Radio frequency coupling and transition structure | |
| CN110707406B (en) | Microstrip line vertical transition structure and microwave device | |
| CN106450632B (en) | Small-size Ka-band broadband end-fed waveguide microstrip conversion structure | |
| CN107394329A (en) | Ka wave band micro-strip waveguide transitions circuits | |
| CN111430850B (en) | Coaxial microstrip-to-coaxial connector applicable to cavity filter and assembling method | |
| CN105356020A (en) | Quarter-wavelength step-impedance resonator-based band-pass filter and design method | |
| CN103442513A (en) | Method for achieving continuous characteristic impedance of high-frequency lines | |
| CN205159481U (en) | Waveguide and microwave transition circuit with adjustable function of working frequency band | |
| CN109301415B (en) | Ferrite semi-filled SIW circulator based on high dielectric ceramics and processing method | |
| CN103414004B (en) | A kind of 0-dB directional coupler based on multilayer technique | |
| US8125292B2 (en) | Coaxial line to planar RF transmission line transition using a microstrip portion of greater width than the RF transmission line | |
| US20120262247A1 (en) | Waveguide coupling | |
| AU2010306171B2 (en) | Antenna coupler | |
| CN204011732U (en) | A kind of triangle patch multifrequency antenna that simultaneously adds short circuit pin and T-shaped fluting | |
| US3315182A (en) | Directional coupler having directivity improving means situated near end of couplingregion | |
| CN104091993A (en) | Double-frequency stub coupler based on substrate integrated coaxial line technology | |
| CN111092281B (en) | Four-order coupling resonator filter based on artificial magnetic conductor | |
| CN208208947U (en) | Minimize SIW surface-mount type circulator | |
| CN213184531U (en) | Millimeter wave microstrip line vertical transition structure | |
| CN104916911A (en) | Ridge waveguide antenna | |
| US20120032750A1 (en) | Angled junction between a microstrip line and a rectangular waveguide | |
| CN204927505U (en) | Ridge waveguide antenna |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP02 | Change in the address of a patent holder | ||
| CP02 | Change in the address of a patent holder |
Address after: 230088 658 Wangjiang West Road, Hefei high tech Zone, Anhui Patentee after: CHINA ELECTRONICS TECHNOLOGY Group CORPORATION NO 16 INSTITUTE Address before: 230043 No. 439, Suixi Road, Hefei, Anhui Patentee before: CHINA ELECTRONICS TECHNOLOGY Group CORPORATION NO 16 INSTITUTE |