CN109687112A - A kind of miniaturization dielectric patch antenna - Google Patents
A kind of miniaturization dielectric patch antenna Download PDFInfo
- Publication number
- CN109687112A CN109687112A CN201910057146.2A CN201910057146A CN109687112A CN 109687112 A CN109687112 A CN 109687112A CN 201910057146 A CN201910057146 A CN 201910057146A CN 109687112 A CN109687112 A CN 109687112A
- Authority
- CN
- China
- Prior art keywords
- dielectric patch
- medium substrate
- sheet metal
- antenna
- miniaturization
- 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.)
- Pending
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/48—Earthing means; Earth screens; Counterpoises
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
- H01Q19/104—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces using a substantially flat reflector for deflecting the radiated beam, e.g. periscopic antennas
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0421—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with a shorting wall or a shorting pin at one end of the element
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0485—Dielectric resonator antennas
Landscapes
- Waveguide Aerials (AREA)
Abstract
The present invention minimizes dielectric patch antenna, including first medium substrate, metallic reflection floor, second medium substrate and the dielectric patch being cascading from bottom to top, the lower surface of first medium substrate is equipped with the microstrip feed line for couple feed, one side of signal input part of the dielectric patch far from antenna has sticked sheet metal, and the sheet metal is connect with the short circuit of metallic reflection floor.The present invention is a kind of hemisection dielectric patch that side is short-circuited, and is used for small design low profile antenna.According to main mould TM101The field distribution of mould, by realize hemisection, obtaining a quarter-wave dielectric patch for the effectively grounded formation short circuit of the central plane of the dielectric patch of half-wavelength.The quarter-wave dielectric patch of obtained hemisection can be motivated by slot-coupled well, for the design of antenna.
Description
Technical field
The present invention relates to wireless communication technology fields, in particular to the miniaturization dielectric patch antenna based on half incision technology.
Background technique
Medium resonator antenna has been widely studied since nineteen eighty-three is put forward for the first time.Compared with metal antenna, medium is humorous
The device antenna that shakes has several superior characteristics, and such as low-loss is light-weight to be motivated with easy.With the miniaturization of communication system,
Demand to small size antenna is continuously increased.In order to meet this demand, there is expert to propose a variety of about miniaturization medium
The design of resonant aerial.The hemisection of medium resonator antenna or a quarter incision technology are the effective ways for realizing miniaturization.
However, the dielectric resonator that hemisection or a quarter are cut still works in the natural mode of dielectric resonator, pass through medium
Multiple faces of resonator are radiated, therefore gain is relatively low.In addition to this, their high section will become in practical application
Obstacle.In order to solve this problem, 2013 Nian You experts have developed a kind of directrix plane dielectric patch antenna, the antenna have with
The similar characteristic of micro-strip paster antenna.Due to introducing the radiation mechanism of patch cavity mold formula, the antenna gain is more humorous than traditional sucrose
Vibration device antenna improves 0.5 to 1dB.But up to the present there are no the miniaturizations developed for dielectric patch antenna to set
Meter method.
Summary of the invention
It is an object of the invention to: overcome the defect of the above-mentioned prior art, proposes that a kind of structure simply minimizes medium
Paster antenna.The main mould TM of hemisection quarter-wave dielectric patch is motivated by using slot-coupled101Mould can obtain
Minimize low section dielectric patch antenna.
In order to achieve the above object, miniaturization dielectric patch antenna proposed by the present invention, including stack gradually from bottom to top
First medium substrate, metallic reflection floor, second medium substrate and the dielectric patch of setting, the following table of the first medium substrate
Face is equipped with the microstrip feed line for couple feed, it is characterised in that: a side of signal input part of the dielectric patch far from antenna
Face paste is covered with sheet metal, and the sheet metal is connect with the short circuit of metallic reflection floor.
The present invention also with the further feature that
1, the upper surface of the second medium substrate is equipped with the metal pad being connected with sheet metal, and the second medium substrate is opened
Equipped with the plated-through hole that a row is connected with metal pad, the upper end of the plated-through hole is connected with metal pad, lower end with
Metallic reflection floor is connected, to realize the short circuit connection of sheet metal.
2, there is a gap, the microstrip feed line is on metallic reflection floor on the vertical split on the metallic reflection floor
On projection intersect vertically with the gap.
The present invention is a kind of hemisection dielectric patch that side is short-circuited, and is used for small design low profile antenna.According to master
Mould TM101The field distribution of mould, by the way that the effectively grounded formation of the central plane of the dielectric patch of half-wavelength is short-circuit, thus real
Existing hemisection, obtains a quarter-wave dielectric patch.The quarter-wave dielectric patch of obtained hemisection can be with
It is motivated well by slot-coupled, for the design of antenna.
Detailed description of the invention
The present invention will be further described below with reference to the drawings.
Fig. 1 is the exploded view of present invention miniaturization dielectric patch antenna.
Fig. 2 is the top view of present invention miniaturization dielectric patch antenna.
Fig. 3 is the side view of present invention miniaturization dielectric patch antenna.
Fig. 4 is the reflection coefficient (S of present invention miniaturization dielectric patch antenna emulation and test11) and gain curve comparison
Figure.
Fig. 5 is the aerial radiation E of emulation and test of the present invention miniaturization dielectric patch antenna under 4.15GHz Frequency point
Face directional diagram.
Fig. 6 is the aerial radiation H of emulation and test of the present invention miniaturization dielectric patch antenna under 4.15GHz Frequency point
Face directional diagram.
Specific embodiment
The present invention will be further described in the following with reference to the drawings and specific embodiments.
As shown in Figure 1-Figure 3, the present embodiment minimizes dielectric patch antenna, including be cascading from bottom to top the
One medium substrate 5, metallic reflection floor 6, second medium substrate 2 and dielectric patch 1.Dielectric patch 1 is quarter-wave
Rectangular Enclosure with Participating Media patch, at the center of second medium substrate 2.First medium substrate 5 is double-sided printed-circuit board, printed on both sides
The top layer of circuit board is metallic reflection floor 6, and bottom is the microstrip feed line 7 for couple feed.Dielectric patch 1 is far from antenna
One side of signal input part has sticked sheet metal 8, and the sheet metal 8 is connect with 6 short circuit of metallic reflection floor.Tool
Body, the upper surface of second medium substrate 2 is equipped with the metal pad 9 being connected with sheet metal 8, and second medium substrate 2 offers
The upper end of the plated-through hole 3 that one row is connected with metal pad 9, plated-through hole 3 is connected with metal pad 9, lower end and metal
It reflects floor 6 to be connected, to realize that sheet metal 8 is connect with 6 short circuit of metallic reflection floor.Metallic reflection floor 6 it is vertical in
There is a gap 4, gap 4 is parallel with sheet metal 8, and gap 4 is symmetrically set along the center line of microstrip feed line 7 in facet
It sets, projection of the microstrip feed line 7 on metallic reflection floor 6 intersects vertically with the gap 4.
The dielectric patch of half wavelength, main mould TM101The field distribution of mould is odd symmetry in the direction of the x axis, because
The dielectric patch of half wavelength can be cut half and successful conversion by the way that central plane is shorted to metallic reflection floor by this
For quarter-wave dielectric patch.The present embodiment antenna is a kind of hemisection that side is short-circuited (quarter-wave) medium
Patch.
In this type of design, crucial to be that the effectively grounded formation of the central plane of the dielectric patch of half wavelength is short
The process on road, required hemisection effect may be implemented in this.It is found through experiments that, the lamella height t on dielectric patch side is most
Important parameter.When t increases to h from 0.1mm1When (height of dielectric patch), the quarter-wave dielectric patch of hemisection
TM101Mode frequency can move down.As t=h1When, the quarter-wave medium of half wavelength dielectric patch and hemisection
The TM of patch101Mould frequency is very close, this shows that the design obtains effective hemisection.
The quarter-wave dielectric patch of hemisection is motivated with slot-coupled as shown in Figure 1 in Antenna Design
TM101Mould.By optimizing good impedance matching, the parameter of the present embodiment antenna can be determined, as shown in the table.
| Parameter | GL | h2 | l | W | LF |
| It is worth (mm) | 52 | 0.813 | 20 | 11 | 24 |
| Parameter | h1 | S1 | SW | t | WF |
| It is worth (mm) | 1.3 | 7 | 0.9 | 1.3 | 3.5 |
The permittivity ε of dielectric patch 1r2=100, loss angle is tan δ2=7×10-4；First medium substrate 5 and second is situated between
The dielectric constant of matter substrate 2 is εr1=3.38, loss angle is tan δ1=2.7×10-3, the radius of plated-through hole is 0.2mm.
The present embodiment dielectric patch filter antenna is tested, test result matches with emulation, and Fig. 5 shows simulation
With the reflection coefficient (S of measurement11) there is good consistency.The antenna is in centre frequency f0S is measured to at=4.15GHz11=-
32dB, maximum gain 5.8dBi, and impedance bandwidth (S11< -10dB) it is 1.43%.E the and H planar radiation figure of 4.15GHz
Respectively as shown in Figure 5 and Figure 6, the cross polarization measured is than main polarization low at least 13dB.Finally, being observed that from Fig. 5 and Fig. 6
There are slight differences between simulation and measurement result, this can be attributed to manufacture and measure generated error.
In addition to the implementation, the present invention can also have other embodiments.It is all to use equivalent substitution or equivalent transformation shape
At technical solution, fall within the scope of protection required by the present invention.
Claims (7)
1. a kind of miniaturization dielectric patch antenna, first medium substrate (5), metal including being cascading from bottom to top are anti-
Floor (6), second medium substrate (2) and dielectric patch (1) are penetrated, the lower surface of the first medium substrate (5), which is equipped with, is used for coupling
Close the microstrip feed line (7) of feed, it is characterised in that: a side of signal input part of the dielectric patch (1) far from antenna sticks
Have sheet metal (8), and the sheet metal (8) is connect with metallic reflection floor (6) short circuit.
2. miniaturization dielectric patch antenna according to claim 1, it is characterised in that: the second medium substrate (2)
Upper surface is equipped with the metal pad (9) being connected with sheet metal (8), and the second medium substrate (2) offers a row and metal
The connected plated-through hole (3) of pad (9), the upper end of the plated-through hole (3) are connected with metal pad (9), lower end and gold
Belong to reflection floor (6) to be connected, to realize the short circuit connection of sheet metal (8).
3. miniaturization dielectric patch antenna according to claim 2, it is characterised in that: the metallic reflection floor (6)
There are a gap (4) on vertical split, projection of the microstrip feed line (7) on metallic reflection floor (6) and the gap (4)
It intersects vertically.
4. miniaturization dielectric patch antenna according to claim 2, it is characterised in that: the gap (4) and sheet metal
(8) in parallel, and gap (4) along microstrip feed line (7) center line symmetrical setting.
5. miniaturization dielectric patch antenna according to claim 2, it is characterised in that: the sheet metal (8) sticks on
Dielectric patch (1) side.
6. miniaturization dielectric patch antenna according to claim 1, it is characterised in that: the first medium substrate (5) is
Double-sided printed-circuit board, the top layer of double-sided printed-circuit board are the metallic reflection floor (6), and bottom is that the micro-strip is presented
Line (7).
7. miniaturization dielectric patch antenna according to claim 1, it is characterised in that: the dielectric patch (1) is four points
One of wavelength Rectangular Enclosure with Participating Media patch, be located at second medium substrate (2) center at.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910057146.2A CN109687112A (en) | 2019-01-22 | 2019-01-22 | A kind of miniaturization dielectric patch antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910057146.2A CN109687112A (en) | 2019-01-22 | 2019-01-22 | A kind of miniaturization dielectric patch antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109687112A true CN109687112A (en) | 2019-04-26 |
Family
ID=66192480
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910057146.2A Pending CN109687112A (en) | 2019-01-22 | 2019-01-22 | A kind of miniaturization dielectric patch antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109687112A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459864A (en) * | 2019-06-30 | 2019-11-15 | 南通大学 | A kind of super surface broad-band antenna based on dielectric patch |
| CN110676589A (en) * | 2019-09-16 | 2020-01-10 | 南通大学 | High-gain differential dual-polarized dielectric patch antenna based on higher-order mode |
| CN111786095A (en) * | 2020-08-10 | 2020-10-16 | 南通大学 | Broadband inclined beam medium patch antenna |
| CN111883916A (en) * | 2020-07-16 | 2020-11-03 | 南通大学 | Broadband low-profile dielectric patch filtering antenna based on double-slit feed structure |
| CN111969289A (en) * | 2020-08-19 | 2020-11-20 | 南通大学 | Low-profile frequency reconfigurable dielectric patch resonator |
| CN112582792A (en) * | 2020-12-04 | 2021-03-30 | 南通大学 | Frequency tunable microstrip patch antenna based on half-cut technology |
| CN115036688A (en) * | 2022-07-11 | 2022-09-09 | 南京理工大学 | Low-profile antenna beam type reconfigurable super-surface antenna |
| CN116995435A (en) * | 2023-06-30 | 2023-11-03 | 中天射频电缆有限公司 | Frequency scanning dielectric resonator filter antenna |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19837266A1 (en) * | 1998-08-17 | 2000-02-24 | Philips Corp Intellectual Pty | Dielectric resonator antenna |
| CN1259777A (en) * | 1998-12-18 | 2000-07-12 | 皇家菲利浦电子有限公司 | Dielectric resonant aerial |
| CN1484344A (en) * | 2002-08-21 | 2004-03-24 | ��ķɭ���ó��˾ | Dielectric resonator type wideband antenna |
| CN1495967A (en) * | 2002-09-09 | 2004-05-12 | ��ķɭ���ó��˾ | Medium resonator antenna |
| GB2401249B (en) * | 2002-05-15 | 2005-04-13 | Antenova Ltd | Improvements relating to attaching dielectric antenna structures to microstrip transmission line feed structures formed on dielectric substrates |
| CN1653647A (en) * | 2002-05-15 | 2005-08-10 | 安蒂诺瓦有限公司 | Improved apparatus for binding dielectric resonator antenna to microband |
| CN1751415A (en) * | 2003-02-18 | 2006-03-22 | 大见忠弘 | Antenna for portable terminal and portable terminal using same |
| CN102738579A (en) * | 2012-07-12 | 2012-10-17 | Tdk大连电子有限公司 | Small-sized ceramic antenna |
| CN107210510A (en) * | 2015-11-28 | 2017-09-26 | 华为技术有限公司 | Dielectric resonator and wave filter |
| CN107482315A (en) * | 2017-07-21 | 2017-12-15 | 南通大学 | A kind of stacked dielectric paster antenna of broadband flat gain |
| CN207732069U (en) * | 2017-12-29 | 2018-08-14 | 苏州富电通讯有限公司 | A kind of inductance load half wavelength dielectric resonator |
| CN108767476A (en) * | 2018-05-04 | 2018-11-06 | 华南理工大学 | A kind of filter, dielectric resonant aerial of simple and compact |
-
2019
- 2019-01-22 CN CN201910057146.2A patent/CN109687112A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19837266A1 (en) * | 1998-08-17 | 2000-02-24 | Philips Corp Intellectual Pty | Dielectric resonator antenna |
| CN1259777A (en) * | 1998-12-18 | 2000-07-12 | 皇家菲利浦电子有限公司 | Dielectric resonant aerial |
| GB2401249B (en) * | 2002-05-15 | 2005-04-13 | Antenova Ltd | Improvements relating to attaching dielectric antenna structures to microstrip transmission line feed structures formed on dielectric substrates |
| CN1653647A (en) * | 2002-05-15 | 2005-08-10 | 安蒂诺瓦有限公司 | Improved apparatus for binding dielectric resonator antenna to microband |
| CN1484344A (en) * | 2002-08-21 | 2004-03-24 | ��ķɭ���ó��˾ | Dielectric resonator type wideband antenna |
| CN1495967A (en) * | 2002-09-09 | 2004-05-12 | ��ķɭ���ó��˾ | Medium resonator antenna |
| CN1751415A (en) * | 2003-02-18 | 2006-03-22 | 大见忠弘 | Antenna for portable terminal and portable terminal using same |
| CN102738579A (en) * | 2012-07-12 | 2012-10-17 | Tdk大连电子有限公司 | Small-sized ceramic antenna |
| CN107210510A (en) * | 2015-11-28 | 2017-09-26 | 华为技术有限公司 | Dielectric resonator and wave filter |
| CN107482315A (en) * | 2017-07-21 | 2017-12-15 | 南通大学 | A kind of stacked dielectric paster antenna of broadband flat gain |
| CN207732069U (en) * | 2017-12-29 | 2018-08-14 | 苏州富电通讯有限公司 | A kind of inductance load half wavelength dielectric resonator |
| CN108767476A (en) * | 2018-05-04 | 2018-11-06 | 华南理工大学 | A kind of filter, dielectric resonant aerial of simple and compact |
Non-Patent Citations (7)
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110459864A (en) * | 2019-06-30 | 2019-11-15 | 南通大学 | A kind of super surface broad-band antenna based on dielectric patch |
| CN110459864B (en) * | 2019-06-30 | 2020-12-01 | 南通大学 | Super surface broadband antenna based on dielectric patch |
| CN110676589A (en) * | 2019-09-16 | 2020-01-10 | 南通大学 | High-gain differential dual-polarized dielectric patch antenna based on higher-order mode |
| CN111883916A (en) * | 2020-07-16 | 2020-11-03 | 南通大学 | Broadband low-profile dielectric patch filtering antenna based on double-slit feed structure |
| CN111883916B (en) * | 2020-07-16 | 2022-10-18 | 南通大学 | Broadband low-profile dielectric patch filtering antenna based on double-slit feed structure |
| CN111786095A (en) * | 2020-08-10 | 2020-10-16 | 南通大学 | Broadband inclined beam medium patch antenna |
| CN111786095B (en) * | 2020-08-10 | 2023-08-18 | 南通大学 | Broadband oblique wave beam medium patch antenna |
| CN111969289A (en) * | 2020-08-19 | 2020-11-20 | 南通大学 | Low-profile frequency reconfigurable dielectric patch resonator |
| CN112582792A (en) * | 2020-12-04 | 2021-03-30 | 南通大学 | Frequency tunable microstrip patch antenna based on half-cut technology |
| CN115036688A (en) * | 2022-07-11 | 2022-09-09 | 南京理工大学 | Low-profile antenna beam type reconfigurable super-surface antenna |
| CN115036688B (en) * | 2022-07-11 | 2024-03-19 | 南京理工大学 | Low-profile antenna beam type reconfigurable super-surface antenna |
| CN116995435A (en) * | 2023-06-30 | 2023-11-03 | 中天射频电缆有限公司 | Frequency scanning dielectric resonator filter antenna |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109687112A (en) | A kind of miniaturization dielectric patch antenna | |
| CN110544822B (en) | Ka-band miniaturized filtering antenna based on SIW structure | |
| CN108767476B (en) | Simple and compact filtering dielectric resonator antenna | |
| WO2020177341A1 (en) | Low-profile dual-polarized filtering magneto-electric dipole antenna | |
| US7362274B1 (en) | Coupled feed-in butterfly shaped left/right hand circularly polarized microstrip antenna | |
| US7486156B2 (en) | Millimeter-wave band broadband microstrip-waveguide transition apparatus having a main patch and a parasitic patch on different dielectric substrates | |
| CN108336484B (en) | Gap-coupled broadband patch antenna | |
| CN111883914B (en) | Dielectric resonator broadband antenna with filter characteristic based on SIW feeding | |
| JP4246004B2 (en) | Dielectric resonant wideband antenna | |
| US20110248891A1 (en) | Dielectric resonant antenna using a matching substrate | |
| CN110676589B (en) | High-gain differential dual-polarized dielectric patch antenna based on higher-order mode | |
| CN110265778B (en) | Dual-frequency filter antenna based on SIW resonant cavity | |
| CN106785460A (en) | A kind of differential bipolar medium resonator antenna | |
| CN108832291A (en) | A kind of substrate integrated waveguide filtering antenna | |
| US7999744B2 (en) | Wideband patch antenna | |
| CN106299705A (en) | A kind of planar broad band filter antenna | |
| KR102430247B1 (en) | Capacitive coupled comb-line microstrip array antenna | |
| Sokunbi et al. | Highly reduced mutual coupling between wideband patch antenna array using multiresonance EBG structure and defective ground surface | |
| CN105337029B (en) | microstrip antenna | |
| CN110707426A (en) | Broadband high-gain compression high-order mode dual-polarized differential antenna loaded with via holes | |
| US20020097108A1 (en) | Transmission line to waveguide mode transformer | |
| CN107994330B (en) | UHF/VHF broadband planar printed antenna | |
| CN110085991A (en) | A kind of circular polarisation low section dielectric patch antenna element and its array | |
| CN111816999B (en) | Microstrip dipole antenna loaded with stub lines | |
| CN114284712A (en) | Broadband high-gain planar end-fire antenna based on artificial surface plasmon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190426 |