CN106654483A - Substrate integrated waveguide simulation and measurement system and resonant cavity apparatus thereof - Google Patents
Substrate integrated waveguide simulation and measurement system and resonant cavity apparatus thereof Download PDFInfo
- Publication number
- CN106654483A CN106654483A CN201611169007.1A CN201611169007A CN106654483A CN 106654483 A CN106654483 A CN 106654483A CN 201611169007 A CN201611169007 A CN 201611169007A CN 106654483 A CN106654483 A CN 106654483A
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- cavity
- cylinder
- harmonic signal
- signal receiving
- conductive slider
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2088—Integrated in a substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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Abstract
The invention relates to a substrate integrated waveguide simulation and measurement system and a resonant cavity apparatus thereof. The resonant cavity apparatus comprises a hollow-structured cylinder body, a harmonic signal receiving assembly, a conductive sliding block and a driving apparatus, wherein the conductive sliding block is glidingly arranged in a hollow cavity of the cylinder body; and a sealed resonant cavity is formed between the conductive sliding block and the harmonic signal receiving assembly. When different resonant frequencies need to be simulated, the conducive sliding block can be driven by the driving apparatus to slide in the hollow cavity so as to enable the dimension of the resonant cavity to be changed continuously and linearly; meanwhile, the harmonic signal receiving assembly receives the generated harmonic signal to obtain the corresponding resonant frequency; when the resonant frequency is the required resonant frequency, the dimension of the resonant cavity is measured; by virtue of the resonant cavity apparatus, simulation requirement of different resonant frequencies can be satisfied by only designing one kind of the resonant cavity body; and in addition, replacement is not needed in the simulation process, so that the cost is lowered and efficiency is improved.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of substrate integration wave-guide simulation and measuring system and its resonance
Chamber device.
Background technology
At present, in the communications field, microstrip line is propagated and may not apply to high band communication because of tolerance performance deficiency；Conventional wave
Though lead can be used for high band, its volume is big, is unfavorable for Integrated design.Substrate integration wave-guide can take into account well conventional waveguide with
The advantage of microstrip line, is capable of achieving high performance microwave planar circuit.Therefore, substrate integration wave-guide is extensively sent out application and exploitation.
In substrate integration wave-guide development technique, the design for designing accurate substrate integration wave-guide resonator is the most key
Technology.When Resonator design is carried out, need to first be simulated, to obtain when different resonant frequencies are produced, corresponding resonance
Chamber size.
In technology conventional at present, the inside cavity structure of resonator of substrate integration wave-guide simulation is carried out to fix not
Changeable-shaped.In order to meet the simulation needs of different resonant frequencies, then the cavity of the resonator of processing different specification size is needed,
So as to increase cost and inefficient.
The content of the invention
Based on this, it is necessary to which providing one kind can improve simulation precision, and the substrate integration wave-guide simulation and survey of reduces cost
Amount system and its resonator device.
A kind of resonator device, including：
Cylinder in hollow structure, is made of an electrically conducting material, and the cylinder has a cavity in bar shaped, and the cavity is extremely
Few one end is closed；
Harmonic signal receiving unit, is arranged in the cylinder, and positioned at the closed one end of the cavity；
Conductive slider, is slidably disposed in the cylinder, and the conductive slider is closely sealed with the inwall of the cavity, with
Closed resonator is formed between the conductive slider and the harmonic signal receiving unit；And
Driving means, are connected with the conductive slider, for driving the conductive slider to slide in the cylinder；
Wherein, the driving means can drive the conductive slider to slide along the axis of the cavity, described humorous to adjust
Shake the length in chamber.
Wherein in one embodiment, the cylinder includes the spacer post that base plate, cover plate and two relative spacings are arranged, described
Two spacer posts are held between the base plate and the cover plate, to be formed between the base plate, the cover plate and the spacer post
The cavity.
Wherein in one embodiment, the inwall of described two spacer posts offers guide groove, institute along the axial direction of the cavity
The two ends for stating conductive slider are respectively slidably installed in two guide grooves.
Wherein in one embodiment, the cover plate is removably installed in the spacer post, is provided with the cavity
Medium installation portion, and the medium installation position is between the harmonic signal receiving unit and the conductive slider.
Wherein in one embodiment, the medium installation portion is along the axially slidable of the cavity.
Wherein in one embodiment, the harmonic signal receiving unit is in the form of sheets, and vertical with the axis of the cavity,
The cylinder also includes pressing plate, the pressing plate by harmonic signal receiving unit pressure holding in the end of the cylinder, to close
The cavity.
Wherein in one embodiment, the driving means include：
Support base, is fixed on the one end of the cylinder away from the harmonic signal receiving unit；
Screw mandrel, one end is rotatablely arranged on the support base；
Screw rodb base, is sheathed on the screw mandrel and screws togather with the screw mandrel；
Drive rod, is slidably arranged in the support base, and one end is fixedly connected with the screw rodb base, the other end and institute
State conductive slider to be fixedly connected；
Wherein, the screw mandrel is rotated, and drives the screw rodb base to slide along the screw mandrel, so that the conductive slider is described
Cylinder described in the drive lower edge of drive rod slides.
Wherein in one embodiment, the drive rod is two, and two drive rods are respectively positioned at the screw mandrel
Both sides, and it is symmetrical relative to the screw mandrel.
Wherein in one embodiment, also including graduated scale, the graduated scale is slidably arranged in the support
Seat, and one end is fixedly connected with the screw rodb base, the other end is fixedly connected with the conductive slider.
A kind of substrate integration wave-guide simulation and measuring system, including：
Resonator device as any one of above-mentioned preferred embodiment；And
Eight external port network analysis testers, are connected with harmonic signal receiving unit communication.
Above-mentioned substrate integration wave-guide simulation and measuring system and its resonator device, being provided with the cavity of cylinder to slide
Closed resonator is formed between dynamic conductive slider, and conductive slider and harmonic signal receiving unit.When needs simulation difference
Resonant frequency when, can by driving means drive conductive slider slide in cavity so that the size of resonator is carried out continuously
Linear change.Meanwhile, harmonic signal receiving unit receives the harmonic signal for producing, and obtains resonant frequency.When resonant frequency is institute
When needing frequency, the size for measuring resonator just may be used.By above-mentioned resonator device, only a kind of cavity of resonator need to be designed
Meet the simulation needs of different resonant frequencies, and need not be changed in simulation process, so as to reducing cost and improve effect
Rate.
Description of the drawings
Fig. 1 is the structural representation of resonator device in present pre-ferred embodiments；
Fig. 2 is the Longitudinal cross section schematic of resonator device shown in Fig. 1；
Fig. 3 is the cross-sectional view of resonator device middle cylinder body shown in Fig. 1；
Fig. 4 is the structural representation of spacer post in resonator device shown in Fig. 1.
Specific embodiment
For the ease of understanding the present invention, the present invention is described more fully below with reference to relevant drawings.In accompanying drawing
Give the preferred embodiment of the present invention.But, the present invention can be realized in many different forms, however it is not limited to herein
Described embodiment.On the contrary, the purpose for providing these embodiments is to make the understanding to the disclosure more saturating
It is thorough comprehensive.
It should be noted that when element is referred to as " being fixed on " another element, it can directly on another element
Or can also there is element placed in the middle.When an element is considered as " connection " another element, it can be directly connected to
To another element or may be simultaneously present centering elements.Term as used herein " vertical ", " level ", " left side ",
" right side " and similar statement are for illustrative purposes only.
Unless otherwise defined, all of technology used herein and scientific terminology and the technical field for belonging to the present invention
The implication that technical staff is generally understood that is identical.The term for being used in the description of the invention herein is intended merely to description tool
The purpose of the embodiment of body, it is not intended that of the invention in limiting.Term as used herein " and/or " include one or more phases
The arbitrary and all of combination of the Listed Items of pass.
Fig. 1 and Fig. 2 is referred to, the substrate integration wave-guide simulation in present pre-ferred embodiments includes resonance with measuring system
The port network analysis tester (not shown) of chamber device 100 and eight.Wherein, resonator device 100 is believed including cylinder 110, harmonic wave
Number receiving unit 120, conductive slider 130 and driving means 140.
Fig. 3 is seen also, cylinder 110 is in hollow structure.Cylinder 110 is made of an electrically conducting material.Specifically, cylinder 110
It is made of metal.Because metal has good electric conductivity and collection skin, therefore suitable for manufacturing cylinder 110.Cylinder 110 has one
Cavity (figure is not marked) in bar shaped, and cavity at least one end is closed.
Vibration source (not shown) can be housed in the cavity of cylinder 110, vibration source has been played and is produced original vibration, and can have been produced in cavity
Raw resonance wave.
In the present embodiment, cylinder 110 includes the spacer post 113 that base plate 111, cover plate 112 and two relative spacings are arranged.Two
Individual spacer post 113 is held between base plate 111 and cover plate 112, to form cavity between base plate 111, cover plate 112 and spacer post 113.
Specifically, the rectangular rod structure of spacer post 113, two relative with spacer post 113 respectively sides of base plate 111, cover plate 112
Laminating.Therefore, the cavity of formation is in cuboid.Compared with integrally formed structure, base plate 111, cover plate in above-mentioned cylinder 110
112 and the connection place of spacer post 113 be vertical stratification, it is to avoid rounded corners.Therefore, can avoid irregular because of rounded corners
The electric property of cavity is impacted.
Harmonic signal receiving unit 120 is arranged in cylinder 110, and positioned at the closed one end of cavity.Harmonic signal is received
Component 120 is used to receive harmonic signal.Eight port network analysis testers are connected with the communication of harmonic signal receiving unit 120, will
The harmonic signal of reception is analyzed and shows, so as to obtain resonant frequency.Because harmonic signal receiving unit 120 receives harmonic wave
The effect of signal is that position is relevant with its angle.Therefore, angle of the harmonic signal receiving unit 120 in cylinder 110 need through
It is accurate to calculate, and be fixed in cylinder 110, to prevent its displacement.
In the present embodiment, harmonic signal receiving unit 120 is in the form of sheets, and vertical with the axis of cavity.Cylinder 110 is also wrapped
Include pressing plate 114, pressing plate 114 by the pressure holding of harmonic signal receiving unit 120 in the end of cylinder 110, with closed cavity.
Specifically, harmonic signal receiving unit 120 is integrated on pcb board, and by harmonic signal receiving unit 120 perpendicular to
The axis of cavity is arranged, then can reduce the distortion factor of harmonic signal reception.Wherein, pressing plate 114 and harmonic signal receiving unit 120
The one side surface of contact is smooth, so that the angle of harmonic signal receiving unit 120 keeps fixing.
Conductive slider 130 is slidably disposed in cylinder 110, and conductive slider 130 is closely sealed with the inwall of cavity, to lead
Closed resonator 101 is formed between electric slide block 130 and harmonic signal receiving unit 120.The original vibration for playing vibration source generation can
Resonance wave is formed in the superposition of resonator 101.Specifically, conductive slider 130 is also made of metal.It is pointed out that conductive sliding
Block 130 and cylinder 110 can be also made up of the good material of other electric conductivity and collection skin.
Because conductive slider 130 is moved as continuously linear movement along cylinder 110, therefore the size of resonator 101 can be made with leading
Moving for electric slide block 130 and realize the change of continuously linear.
Fig. 4 is seen also, in the present embodiment, the inwall of two spacer posts 113 offers guide groove along the axial direction of cavity
1132, the two ends of conductive slider 130 are respectively slidably installed in two guide grooves 1132.Guide groove 1132 can be to conductive slider
130 play guiding and spacing effect, so that conductive slider 130 moves more steady, prevent it because of vibration to changing resonator
101 electric property, and then impact is produced on analog result.
Driving means 140 are connected with conductive slider 130, for driving conductive slider 130 to slide in cylinder 110.
Wherein, driving means 140 can drive conductive slider 130 to slide along the axis of cavity, to adjust the length of resonator 101.
When needing to simulate different resonant frequencies, by driving means 140 conductive slider 130 can be driven sliding in cavity
It is dynamic, so that the size of resonator 101 carries out continuously linear change.Meanwhile, harmonic signal receiving unit 120 receives the harmonic wave for producing
Signal, obtains resonant frequency.When resonant frequency frequency for needed for, measure the real-time size of resonator 101 and just may be used.
In the present embodiment, cover plate 111 is removably installed in spacer post 113, and medium installation portion is provided with cavity
102, and medium installation portion 102 is positioned between harmonic signal receiving unit 120 and conductive slider 130.
Therefore, by dismount cover plate 111, cavity can be opened or closed, so as to can dielectric material installed in medium install
In portion 102, to change the electric property of resonator 101, and then simulate have medium and without medium in the case of, resonant frequency with
The relation of resonant cavity size.
Additionally, the size that can keep resonator 101 is fixed, and obtain resonator 101 in the size when, have medium and nothing
Resonant frequency in the case of medium.By the difference of resonant frequency in the case of two kinds of analytical calculation, the dielectric material just can be obtained
Dielectric constant.And, can also pass through the size for adjusting resonator 101, to obtain multigroup comparison data, so as to dielectric can be made normal
Several acquisitions is more accurate.
Further, in the present embodiment, medium installation portion 102 is along the axially slidable of cavity.Specifically, cover plate 111
On offer chute (not shown), base plate 112 offers circular groove (not shown), and dielectric material is slidably mounted in chute, and
Coordinated by screw rod and circular groove, realize fixing.Slided by medium installation portion 102, resonant frequency and dielectric material can be simulated
The relation of the position in resonator.
In the present embodiment, driving means 140 include support base 141, screw mandrel 143, screw rodb base 145 and drive rod 147.
Support base 141 is fixed on the one end of cylinder 110 away from harmonic signal receiving unit 120.Support base 141 can one into
Type, also can be spliced by some.
The one end of screw mandrel 143 is rotatablely arranged on support base 141.Specifically, one end of screw mandrel 143 can by axle sleeve with
Support base 141 is realized installing.Support base 141 can be such that screw mandrel 143 keeps in its axis direction to making 143 position-limiting actions of screw mandrel
Position is fixed.
Screw rodb base 145 is sheathed on screw mandrel 143 and screws togather with screw mandrel 143.The inner side of screw rodb base 145 is provided with internal thread, can
Match with the external screw thread on the surface of screw mandrel 143.Screw mandrel 143 is rotated relative to screw rodb base 145, just can be transformed into screw directly
Line is moved.
Drive rod 147 is slidably arranged in support base 141.The one end of drive rod 147 is fixedly connected with screw rodb base 145, separately
One end is fixedly connected with conductive slider 130.
Therefore, when screw mandrel 143 is rotated, screw rodb base 145 moves along a straight line in the presence of screw drive along screw mandrel 143,
So as to drive drive rod 147 in the flexible of cylinder 110.Conductive slider 130 drives lower edge cylinder 110 to slide in drive rod 147, from
And realize the regulation of the length of resonator 101.
The characteristics of steady, smooth because screw mandrel feeding mode has.Therefore, by above-mentioned driving means 140 with moving conductive
Slide block 130, can make the moving process of conductive slider 130 more stable.
Further, in the present embodiment, drive rod 147 is two, and two drive rods 147 are respectively positioned at screw mandrel 143
Both sides, and it is symmetrical relative to screw mandrel 143.
Due to driving conductive slider 130 to move by two drive rods 147, and two drive rods 147 are relative to screw mandrel 143
Symmetrically.Therefore, the active force that conductive slider 130 is subject in moving process evenly, will not produce oblique vector, so as to enter
One step lifts the stability of feeding process.
In the present embodiment, resonator device 100 also includes graduated scale 150.Graduated scale 150 is slidably arranged in
Support base 141, and one end is fixedly connected with screw rodb base 145, the other end is fixedly connected with conductive slider 130.
Specifically, graduated scale 150 is elongated and it is marked with scale.Two ends and driving due to graduated scale 150
Bar 147 is fixed on identical element.Therefore, graduated scale 150 can be with the synchronization telescope of drive rod 147.And the position of drive rod 147
Shifting amount is equal to the displacement of conductive slider 130.Therefore, by reading the scale on graduated scale 150, just can understand directly perceived and real
When observe the size of resonator 101.
Above-mentioned substrate integration wave-guide simulation and measuring system and its resonator device 100, are arranged in the cavity of cylinder 110
Have between slidable conductive slider 130, and conductive slider 130 and harmonic signal receiving unit 120 and form closed resonator
101.When needing to simulate different resonant frequencies, by driving means 140 conductive slider 130 can be driven to slide in cavity,
So that the size of resonator 101 carries out continuously linear change.Meanwhile, harmonic signal receiving unit 120 receives the harmonic wave letter for producing
Number, obtain resonant frequency.When resonant frequency frequency for needed for, the size for measuring resonator 101 just may be used.By above-mentioned resonator
Device 100, meets the simulation needs of different resonant frequencies, and nothing in simulation process by need to only designing a kind of cavity of resonator
Need to be changed, so as to reducing cost and improve efficiency.
Each technical characteristic of embodiment described above can be combined arbitrarily, to make description succinct, not to above-mentioned reality
Apply all possible combination of each technical characteristic in example to be all described, as long as however, the combination of these technical characteristics is not deposited
In contradiction, the scope of this specification record is all considered to be.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Can not therefore be construed as limiting the scope of the patent.It should be pointed out that for one of ordinary skill in the art comes
Say, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the protection of the present invention
Scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (10)
1. a kind of resonator device, it is characterised in that include：
Cylinder in hollow structure, is made of an electrically conducting material, and the cylinder has a cavity in bar shaped, the cavity at least
End is closed；
Harmonic signal receiving unit, is arranged in the cylinder, and positioned at the closed one end of the cavity；
Conductive slider, is slidably disposed in the cylinder, and the conductive slider is closely sealed with the inwall of the cavity, with institute
State and form closed resonator between conductive slider and the harmonic signal receiving unit；And
Driving means, are connected with the conductive slider, for driving the conductive slider to slide in the cylinder；
Wherein, the driving means can drive the conductive slider to slide along the axis of the cavity, to adjust the resonator
Length.
2. resonator device according to claim 1, it is characterised in that the cylinder includes base plate, cover plate and two phases
To spaced spacer post, described two spacer posts are held between the base plate and the cover plate, with the base plate, the lid
The cavity is formed between plate and the spacer post.
3. resonator device according to claim 2, it is characterised in that the inwall of described two spacer posts is along the cavity
Axially guide groove is offered, the two ends of the conductive slider are respectively slidably installed in two guide grooves.
4. resonator device according to claim 2, it is characterised in that the cover plate is removably installed in the spacer post
On, be provided with medium installation portion in the cavity, and the medium installation position in the harmonic signal receiving unit with it is described
Between conductive slider.
5. resonator device according to claim 4, it is characterised in that the medium installation portion is along the axial direction of the cavity
Slidably.
6. resonator device according to claim 2, it is characterised in that the harmonic signal receiving unit in the form of sheets, and
It is vertical with the axis of the cavity, the cylinder also include pressing plate, the pressing plate by harmonic signal receiving unit pressure holding in
The end of the cylinder, to close the cavity.
7. the resonator device according to any one of claim 1～6, it is characterised in that the driving means include：
Support base, is fixed on the one end of the cylinder away from the harmonic signal receiving unit；
Screw mandrel, one end is rotatablely arranged on the support base；
Screw rodb base, is sheathed on the screw mandrel and screws togather with the screw mandrel；
Drive rod, is slidably arranged in the support base, and one end is fixedly connected with the screw rodb base, and the other end is led with described
Electric slide block is fixedly connected；
Wherein, the screw mandrel is rotated, and drives the screw rodb base to slide along the screw mandrel, so that the conductive slider is in the driving
Cylinder described in the drive lower edge of bar slides.
8. resonator device according to claim 7, it is characterised in that the drive rod is two, two drivings
Bar is located at respectively the both sides of the screw mandrel, and symmetrical relative to the screw mandrel.
9. resonator device according to claim 7, it is characterised in that also including graduated scale, the graduated scale can
The support base is slidably arranged in, and one end is fixedly connected with the screw rodb base, the other end is fixed with the conductive slider and connected
Connect.
10. a kind of substrate integration wave-guide is simulated and measuring system, it is characterised in that included：
Resonator device as described in above-mentioned any one of claim 1～9；And
Eight external port network analysis testers, are connected with harmonic signal receiving unit communication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611169007.1A CN106654483B (en) | 2016-12-16 | 2016-12-16 | Substrate integration wave-guide simulation and measuring system and its resonator device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611169007.1A CN106654483B (en) | 2016-12-16 | 2016-12-16 | Substrate integration wave-guide simulation and measuring system and its resonator device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106654483A true CN106654483A (en) | 2017-05-10 |
| CN106654483B CN106654483B (en) | 2019-07-05 |
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| CN201611169007.1A Active CN106654483B (en) | 2016-12-16 | 2016-12-16 | Substrate integration wave-guide simulation and measuring system and its resonator device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109219227A (en) * | 2018-11-01 | 2019-01-15 | 中国科学院近代物理研究所 | Tuner and Superconducting cavity LINAC with it |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944307A (en) * | 2013-12-13 | 2014-07-23 | 上海舜拓电机有限公司 | Slide-block-type linear driver |
| CN105449324A (en) * | 2015-12-31 | 2016-03-30 | 中国电子科技集团公司第五十四研究所 | Multi-cavity coaxial electrically tunable filter |
| CN106099301A (en) * | 2016-07-19 | 2016-11-09 | 电子科技大学 | A kind of coaxial resonant cavity and application thereof |
-
2016
- 2016-12-16 CN CN201611169007.1A patent/CN106654483B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103944307A (en) * | 2013-12-13 | 2014-07-23 | 上海舜拓电机有限公司 | Slide-block-type linear driver |
| CN105449324A (en) * | 2015-12-31 | 2016-03-30 | 中国电子科技集团公司第五十四研究所 | Multi-cavity coaxial electrically tunable filter |
| CN106099301A (en) * | 2016-07-19 | 2016-11-09 | 电子科技大学 | A kind of coaxial resonant cavity and application thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109219227A (en) * | 2018-11-01 | 2019-01-15 | 中国科学院近代物理研究所 | Tuner and Superconducting cavity LINAC with it |
| CN109219227B (en) * | 2018-11-01 | 2021-07-27 | 中国科学院近代物理研究所 | Tuning device and superconducting accelerating cavity with same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106654483B (en) | 2019-07-05 |
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Effective date of registration: 20200108 Address after: 510730 Guangdong city of Guangzhou province Guangzhou economic and Technological Development Zone Jinbi Road No. 6 Patentee after: Jingxin Communication Technology (Guangzhou) Co., Ltd. Address before: 510663, No. 6, Jin Lu, Guangzhou economic and Technological Development Zone, Guangdong, Guangzhou Co-patentee before: Jingxin Communication System (China) Co., Ltd. Patentee before: Jingxin Communication Technology (Guangzhou) Co., Ltd. Co-patentee before: TIANJIN COMBA TELECOM SYSTEMS CO., LTD. |
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