CN103022626A - Harmonic oscillator, resonant cavity, filter device and electromagnetic wave equipment - Google Patents
Harmonic oscillator, resonant cavity, filter device and electromagnetic wave equipment Download PDFInfo
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- CN103022626A CN103022626A CN2012105814967A CN201210581496A CN103022626A CN 103022626 A CN103022626 A CN 103022626A CN 2012105814967 A CN2012105814967 A CN 2012105814967A CN 201210581496 A CN201210581496 A CN 201210581496A CN 103022626 A CN103022626 A CN 103022626A
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Abstract
The invention relates to a harmonic oscillator which comprises a dielectric body. A concave hole is arranged on the surface of the dielectric body, and a conducting layer made of conducting materials is arranged in the concave hole. The invention further relates to a resonant cavity with the harmonic oscillator, a filter device and electromagnetic wave equipment. By the harmonic oscillator with the conducting layer, resonant frequency of the resonant cavity with the harmonic oscillator is lowered beneficially, so that the size of the resonant cavity is decreased greatly, and the sizes of the filter device and the electromagnetic wave equipment which are provided with the resonant cavity are also decreased obviously.
Description
Technical field
The present invention relates to ﹠ RF Components and equipment thereof, more particularly, relate to a kind of harmonic oscillator, resonant cavity, filtering device and electromagnetic wave device.
Background technology
Traditional metal harmonic oscillator filter volume is little and can realize the resonance of lower frequency, but the little meeting of volume causes bearing higher power.Traditional dielectric resonance subfilter can be born high power, but if realize low-frequency resonant, then the volume of the volume of dielectric resonance and wire chamber can be larger, do not satisfy the demand of filter miniaturization.How designing that a kind of resonance frequency is low, volume is little and anti-high-power harmonic oscillator and filter thereof, is to need a problem solving.
Summary of the invention
The object of the invention is to, for the defects of prior art, provide that a kind of resonance frequency is low, volume is little and anti-high-power harmonic oscillator, resonant cavity, filtering device and electromagnetic wave device.
The technical solution adopted for the present invention to solve the technical problems is: construct a kind of harmonic oscillator, comprise the medium body, offer shrinkage pool on the described medium body surface, be provided with the conductive layer that electric conducting material consists of in the described shrinkage pool.
In harmonic oscillator of the present invention, described conductive layer is attached directly on the described shrinkage pool inwall.
In harmonic oscillator of the present invention, described conductive layer is fixed on the side or bottom surface of described shrinkage pool inwall by connecting medium.
In harmonic oscillator of the present invention, described medium body is made greater than 1 material by dielectric constant.
In harmonic oscillator of the present invention, described medium body is made by ceramic material.
In harmonic oscillator of the present invention, described conductive layer is metal cylinder, and described medium body is tubular and is set in outside the described metal cylinder.
In harmonic oscillator of the present invention, described shrinkage pool is blind hole or through hole.
In harmonic oscillator of the present invention, described shrinkage pool is circular port, square opening, truncated cone-shaped hole, square platform shape hole, bellmouth or irregularly shaped.
In harmonic oscillator of the present invention, described conductive layer covers side or the bottom surface of described shrinkage pool inwall or covers the whole inner wall surface of described shrinkage pool.
In harmonic oscillator of the present invention, the electric conducting material of described conductive layer is metal.
In harmonic oscillator of the present invention, described electric conducting material is silver, copper or gold, perhaps for containing in silver, copper or the gold alloy of one or both or three kinds.
In harmonic oscillator of the present invention, the electric conducting material of described conductive layer is nonmetal for conduction.
In harmonic oscillator of the present invention, described electric conducting material is electrically conductive graphite, indium tin oxide or Al-Doped ZnO.
The invention still further relates to a kind of resonant cavity, comprise cavity, be positioned at the harmonic oscillator of described cavity, described harmonic oscillator is above-mentioned harmonic oscillator, and it comprises the medium body, offer shrinkage pool on the described medium body surface, be attached with the conductive layer that electric conducting material consists of on the described shrinkage pool inwall.
In resonant cavity of the present invention, described resonant cavity also comprises and is contained on the described cavity and stretches into and play tuning used tuning plug in the described cavity, and described tuning plug and described shrinkage pool arrange in opposite directions.
In resonant cavity of the present invention, described medium body is provided with at least two shrinkage pools, and the position relative with each shrinkage pool is equipped with a tuning plug.
In resonant cavity of the present invention, the described tuning plug screw rod that to be dielectric constant make greater than 1 nonmetallic materials or be metal screw.
In resonant cavity of the present invention, described shrinkage pool is through hole, and is attached with the conductor articulamentum on the medium body surface that described through hole is connected.
In resonant cavity of the present invention, the inwall of described conductor articulamentum and described resonant cavity is connected to one by welding or hot pressing or threaded engagement or bonding mode.
The invention still further relates to a kind of filtering device, comprise one or more resonant cavitys, at least one resonant cavity is above-mentioned resonant cavity, comprise cavity, be positioned at the harmonic oscillator of described cavity, described harmonic oscillator is above-mentioned harmonic oscillator, it comprises the medium body, offers shrinkage pool on the described medium body surface, is attached with the conductive layer that electric conducting material consists of on the described shrinkage pool inwall.
In filtering device of the present invention, described filtering device is filter or duplexer.
In filtering device of the present invention, the conductive layer of described harmonic oscillator contacts with ground connection with described resonant cavity.
In filtering device of the present invention, described filtering device comprises a plurality of resonant cavitys, is provided with a described harmonic oscillator in each resonant cavity, and the shrinkage pool correspondence of each harmonic oscillator is provided with a tuning plug.
In filtering device of the present invention, be the coupling of windowing between the resonant cavity of described filtering device and the resonant cavity, and each position of windowing is provided with coupling bar.
In filtering device of the present invention, described filtering device is band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
The invention still further relates to a kind of electromagnetic wave device, comprise the filtering device that signal emission module, input be connected with described signal emission module, the signal receiving module that is connected with described filtering device output, described filtering device is above-mentioned filtering device.
In electromagnetic wave device of the present invention, described electromagnetic wave device is aircraft, radar, base station or satellite.
Implement the present invention, have following beneficial effect: the present invention is because employing has the harmonic oscillator of conductive layer, be conducive to reduce the resonance frequency of the resonant cavity with this harmonic oscillator, thereby greatly dwindle the volume of resonant cavity, have the filtering device of this resonant cavity and the volume of electromagnetic wave device and also can obviously reduce thereupon.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the vertical view of the harmonic oscillator of the preferred embodiment of the present invention;
Fig. 2 be harmonic oscillator shown in Figure 1 partly cut open front view;
Fig. 3 is the structural representation of the harmonic oscillator of another embodiment;
Fig. 4 be among the embodiment resonant cavity partly cut open vertical view;
Fig. 5 be resonant cavity shown in Figure 4 partly cut open front view;
Fig. 6 is the B-B profile of the filtering device among the embodiment;
Fig. 7 is the A-A profile of filtering device shown in Figure 6;
Fig. 8 is the partial structurtes schematic diagram of electromagnetic wave device of the present invention when being the base station.
Embodiment
The resonant cavity, filtering device and the electromagnetic wave device that the present invention relates to a kind of harmonic oscillator and have this harmonic oscillator, this harmonic oscillator is so that resonant cavity has low-down resonance frequency, thereby much smaller with traditional resonant cavity phase specific volume of identical resonance frequency, the volume and weight that can effectively reduce the filtering device that is consisted of by resonant cavity and have the electromagnetic wave device of this filtering device.
Wherein the harmonic oscillator of an embodiment comprises medium body 1 as shown in Figure 1 and Figure 2, offers the shrinkage pool 2 of guided media body 1 inner recess on medium body 1 outer surface, is attached with the conductive layer 3 that electric conducting material consists of on all surfaces of shrinkage pool 2 inwalls or the part surface.
As shown in Figure 1, the medium body 1 of the present embodiment is the rectangle square column, and four rib roundings.Certainly harmonic oscillator is not limited to this shape, medium body 1 of the present invention can be the shape that existing any one harmonic oscillator has, for example cylindrical, square shape sheet, truncated cone-shaped, square halfpace, or other any regular or irregularly shaped, this does not have influence on the characteristic of harmonic oscillator of the present invention, and this paper is not restricted.
Certainly, this shrinkage pool 2 differs and is decided to be through hole, also can be blind hole, does not namely penetrate into another surperficial hole.For example, this blind hole can also can be other shapes such as hemisphere, tetrahedroid etc. for, just highly shorter shape identical with any shape of above-mentioned through hole, and this paper is not restricted.
Inner wall surface at shrinkage pool 2 is attached with conductive layer 3, conductive layer 3 is made of the material that can conduct electricity, preferable alloy, for example silver, copper or gold, perhaps for containing in silver, copper or the gold alloy of one or both or three kinds, also can be that other metal materials or other metal alloy electric conducting materials also can be can conduct electricity nonmetal, for example electrically conductive graphite, indium tin oxide or Al-Doped ZnO.
Among the embodiment shown in Figure 3, medium body 1 is the cylindrical shape of even uniform thickness, and middle shrinkage pool is through hole.Conductive layer 3 is for having certain thickness metal cylinder, and the bottom is provided with flange, and medium body 1 is enclosed within the outer and bottom surface of conductive layer 3 and can just be placed on the flange.Certainly, metal cylinder might not have flange, can only have columnar structured, fixing by bonding or other modes and resonant cavity bottom.The conductive layer of preferred harmonic oscillator directly is connected and ground connection with the resonant cavity bottom electrical.
The scope that conductive layer 3 covers can be whole shrinkage pool 2 inner wall surface, can be the part surface of shrinkage pool 2 inwalls, for example only covers the side of shrinkage pool 2 inwalls, the inner wall section that also namely is connected with shrinkage pool 2 open ends; Also can only cover the bottom surface of shrinkage pool 2, i.e. the inner wall section that with this openend be not connected relative with shrinkage pool 2 open ends; Or, be coated with simultaneously the subregion of side and the subregion of bottom surface.
The advantage that concrete applied environment below in conjunction with harmonic oscillator---resonant cavity illustrates this harmonic oscillator with and with the difference of existing media ceramic harmonic oscillator.
Resonant cavity such as Fig. 4, shown in Figure 5 comprise cavity 5, harmonic oscillator and tuning plug 4.Wherein, the chamber lid is housed on the openend of cavity 5, cavity and chamber lid encloses an enclosure space, and above-mentioned harmonic oscillator namely is positioned at described enclosure space, and its bottom can support harmonic oscillator by the supporting base that a low-loss material (such as aluminium oxide etc.) made.Cavity or chamber cover is equipped with tuning plug 4, and tuning plug 4 ends stretch in the enclosure space and stretch at least in part in the shrinkage pool 2 of harmonic oscillator.
Tuning plug 4 is generally metal screw, and be contained in the chamber by nut and cover, and the length that stretches in the chamber is adjustable, thus the resonance frequency of among a small circle, regulating resonant cavity.Tuning plug 4 also can be made by ceramic material, or the rod outer surface coated metal of making at a low-loss material or pottery or other high dielectric constant materials.Tuning plug 4 also can be made for nonmetallic materials, needs only its dielectric constant greater than 1, the certainly preferred higher material of dielectric constant.The present invention does not do any restriction to material and the shape of tuning plug 4, thereby the electromagnetic field distribution affects resonance frequency in the cavity 5 interior energy perturbation chambeies as long as it stretches into.Tuning plug 4 ends can directly contact with shrinkage pool 2 inwalls or conductive layer 3.
When shrinkage pool 2 was through hole, the bottom surface that contacts with cavity 5 of medium body 1 can arrange the conductor articulamentum, and described conductor articulamentum is made for the electric conducting material identical or different from above-mentioned conductive layer 3, and coupled together with conductive layer 3 on the through-hole wall.This moment, this conductor articulamentum can be fixed with one by hot pressing or welding or other known interconnection techniques and cavity 5.
In order to strengthen the frequency reducing effect, can be provided with two or more than two shrinkage pool 2 on the medium body 1, to a tuning plug 4 should be arranged, certainly in order to increase perturbation quantity, can a tuning plug 4 all be set in each shrinkage pool 2 relative position on one of them shrinkage pool 2.
The below will illustrate by concrete experimental data the advantage of resonant cavity of the present invention.Take a single chamber resonant cavity with pure ceramic dielectric harmonic oscillator as Comparative Examples, this resonant cavity cavity is square column type, this ceramic dielectric harmonic oscillator adopts the cylindrical microwave media ceramic, be of a size of external diameter 24mm, internal diameter 8mm, high 19mm, internal diameter corresponds to through hole, the resonance frequency that experiment records the resonant cavity with this dielectric resonance is 1.642GHz, and the average power of this resonant cavity is 275W.
Adopt identical cavity and dielectric resonance (above-mentioned pure ceramic dielectric harmonic oscillator is as the medium body of harmonic oscillator in this example), and plate silver (being the conductive layer in this example) at the through hole (being the shrinkage pool in this example) of this harmonic oscillator, experiment records the resonance frequency of the resonant cavity with this harmonic oscillator and is down to 0.875GHz, and average power is 335W.
This shows, adopt harmonic oscillator of the present invention, with respect to simple dielectric resonance, resonance frequency can be reduced approximately 800MHz, be essentially half of original resonance frequency, corresponding meaning is when the resonant cavity of preparation identical resonance frequency, cavity volume will significantly reduce, and little on the impact of power.
And adopt identical cavity, and dielectric resonance is replaced by shape, metal harmonic oscillator that volume is identical, namely the metal harmonic oscillator is the cylindrical shape of external diameter 24mm, internal diameter 8mm, high 19mm, and material is fine copper.The resonance frequency that experiment records the resonant cavity with this metal harmonic oscillator is 1.569GHz, and average power is 54W.
This shows, adopt harmonic oscillator of the present invention, the metal harmonic oscillator with respect to simple still can provide substantially close resonance frequency, and average power has then improved greatly.
In sum, adopt as can be known harmonic oscillator of the present invention, the anti-high-power advantage that namely has dielectric resonance, the advantage that the resonance frequency that has simultaneously the metal harmonic oscillator concurrently is low, volume is little can be widened the resonant cavity of prior art, the range of application of filtering device greatly.
Characteristics based on the resonant cavity in above-mentioned single chamber the invention still further relates to a kind of filtering device, can have the device of filter function for filter, duplexer or other, and it comprises at least one resonant cavity, and wherein at least one resonant cavity is above-mentioned resonant cavity.
Take Fig. 6, multicavity filter shown in Figure 7 as example.Filter shown in Figure 6 is the filter with six resonant cavitys.Input 8 and output 9 are equipped with respectively in cavity 5 two ends.
In order to strengthen coupling, be coupled and window on earth for windowing between chamber and the chamber; Simultaneously, a plurality of harmonic oscillators link into an integrated entity by bridging part 7 as shown in Figure 6 successively.Described bridging part 7 can be that the material identical with medium body 1 made, and also can be that different materials is made.Further, each position of windowing also is provided with coupling bar 6, also can regulate the coupling power by the length that coupling bar 6 stretches in the chamber.Certainly, the electric coupling between the cavity of conventional filter or magnetic coupling mode all can be applicable among the present invention, such as disk coupling, Metallic rod coupling etc.
As shown in Figure 6, each harmonic oscillator is as indicated above, has shrinkage pool 2 and the conductive layer 3 that is attached on shrinkage pool 2 inwalls, and each shrinkage pool 2 correspondence is provided with in a tuning plug 4 insertion shrinkage pools 2.
And then the present invention also protects a kind of electromagnetic wave device with above-mentioned filtering device, and this electromagnetic wave device can be the equipment that any needs are used filtering device, such as aircraft, radar, base station, satellite etc.These electromagnetic wave devices can receive and transmitted signal, and after receiving or before sending, carry out filtering, so that institute's signal of receiving or sending satisfies the demands, so electromagnetic wave device at least also comprises the signal emission module that is connected with the input of filtering device, the signal receiving module that is connected with the output of filtering device.
For example, as shown in Figure 8, electromagnetic wave device is the base station, and the base station comprises the duplexer as filtering device, and duplexer comprises post a letter band pass filter and collection of letters band pass filter.The input of band pass filter of posting a letter connects sender, and output connects antenna for base station; The input of collection of letters band pass filter connects antenna for base station, and output connects receiver.
Then for the band pass filter of posting a letter, its signal emission module is sender, and signal receiving module is antenna for base station.And for collection of letters band pass filter, its signal emission module is antenna for base station, and signal receiving module is receiver.
The present invention is conducive to reduce the resonance frequency of the resonant cavity with this harmonic oscillator because employing has the harmonic oscillator of conductive layer 3, thereby can greatly dwindle the volume of resonant cavity when realizing identical resonance frequency; The existence of medium body is again so that whole harmonic oscillator can tolerate high power.Therefore have the filtering device of this resonant cavity and the volume of electromagnetic wave device also can obviously reduce thereupon, and anti-high power.
The above is described embodiments of the invention by reference to the accompanying drawings; but the present invention is not limited to above-mentioned embodiment; above-mentioned embodiment only is schematic; rather than restrictive; those of ordinary skill in the art is under enlightenment of the present invention; not breaking away from the scope situation that aim of the present invention and claim protect, also can make a lot of forms, these all belong within the protection of the present invention.
Claims (26)
1. a harmonic oscillator is characterized in that, described harmonic oscillator comprises:
Comprise the medium body;
Offer shrinkage pool on the described medium body surface
Be provided with the conductive layer that electric conducting material consists of in the described shrinkage pool.
2. harmonic oscillator according to claim 1 is characterized in that, described conductive layer is attached directly on the described shrinkage pool inwall.
3. harmonic oscillator according to claim 1 is characterized in that, described conductive layer is fixed on the side or bottom surface of described shrinkage pool inwall by connecting medium.
4. harmonic oscillator according to claim 1 is characterized in that, described medium body is made greater than 1 material by dielectric constant.
5. harmonic oscillator according to claim 1 is characterized in that, described medium body is made by ceramic material.
6. harmonic oscillator according to claim 1 is characterized in that, described shrinkage pool is blind hole or through hole.
7. harmonic oscillator according to claim 1 is characterized in that, described conductive layer is metal cylinder, and described medium body is tubular and is set in outside the described metal cylinder.
8. harmonic oscillator according to claim 1 is characterized in that, described conductive layer covers on the side or bottom surface of described shrinkage pool inwall, and perhaps described conductive layer covers on the whole inner wall surface of shrinkage pool inwall.
9. harmonic oscillator according to claim 1 is characterized in that, the electric conducting material of described conductive layer is metal.
10. harmonic oscillator according to claim 9 is characterized in that, described electric conducting material is silver, copper or gold, perhaps for containing in silver, copper or the gold alloy of one or both or three kinds.
11. harmonic oscillator according to claim 1 is characterized in that, the electric conducting material of described conductive layer is nonmetal for conduction.
12. harmonic oscillator according to claim 11 is characterized in that, described electric conducting material is electrically conductive graphite, indium tin oxide or Al-Doped ZnO.
13. resonant cavity, comprise cavity, be positioned at the harmonic oscillator of described cavity, it is characterized in that, described harmonic oscillator is such as the described harmonic oscillator of claim 1 to 12 any one, it comprises the medium body, offer shrinkage pool on the described medium body surface, be attached with the conductive layer that electric conducting material consists of on the described shrinkage pool inwall.
14. resonant cavity according to claim 13 is characterized in that, described resonant cavity also comprises and is contained on the described cavity and stretches into and play tuning used tuning plug in the described cavity body, and described tuning plug and described shrinkage pool arrange in opposite directions.
15. resonant cavity according to claim 14 is characterized in that, described medium body is provided with at least two shrinkage pools, and the position relative with each shrinkage pool is equipped with a tuning plug.
16. resonant cavity according to claim 14 is characterized in that, the described tuning plug screw rod that to be dielectric constant make greater than 1 nonmetallic materials or be metal screw.
17. resonant cavity according to claim 15 is characterized in that, described shrinkage pool is through hole, and is attached with the conductor articulamentum on the medium body surface that described through hole is connected.
18. resonant cavity according to claim 17 is characterized in that, the inwall of described conductor articulamentum and described resonant cavity is connected to one by welding or hot pressing or threaded engagement or bonding mode.
19. a filtering device comprises one or more resonant cavitys, it is characterized in that, at least one resonant cavity is such as the described resonant cavity of claim 13 to 18 any one.
20. filtering device according to claim 19 is characterized in that, described filtering device is filter or duplexer.
21. filtering device according to claim 19 is characterized in that, the conductive layer of described harmonic oscillator contacts with ground connection with described resonant cavity.
22. filtering device according to claim 19 is characterized in that, described filtering device comprises a plurality of resonant cavitys, is provided with a described harmonic oscillator in each resonant cavity, and the shrinkage pool correspondence of each harmonic oscillator is provided with a tuning plug.
23. filtering device according to claim 22 is characterized in that, be the coupling of windowing between the resonant cavity of described filtering device and the resonant cavity, and each position of windowing is provided with coupling bar.
24. cavity body filter according to claim 19 is characterized in that, described filtering device is band pass filter, band stop filter, high pass filter, low pass filter or multiband filter.
25. electromagnetic wave device, comprise signal emission module, signal receiving module and filtering device, the input of described filtering device is connected with described signal emission module, output is connected with signal receiving module, it is characterized in that, described filtering device is such as the described filtering device of claim 19 to 24 any one.
26. electromagnetic wave device according to claim 25 is characterized in that, described electromagnetic wave device is aircraft, radar, base station or satellite.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310364333.8A CN103855454B (en) | 2012-11-30 | 2012-11-30 | A kind of resonator, filtering device and electromagnetic wave device |
| CN201210581496.7A CN103022626B (en) | 2012-11-20 | 2012-11-30 | Harmonic oscillator, resonant cavity, filter device and electromagnetic wave equipment |
| CN201310364327.2A CN103855455B (en) | 2012-11-30 | 2012-11-30 | A kind of harmonic oscillator, resonator, filtering device and electromagnetic wave device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210472161 | 2012-11-20 | ||
| CN201210472161.1 | 2012-11-20 | ||
| CN201210581496.7A CN103022626B (en) | 2012-11-20 | 2012-11-30 | Harmonic oscillator, resonant cavity, filter device and electromagnetic wave equipment |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310364333.8A Division CN103855454B (en) | 2012-11-30 | 2012-11-30 | A kind of resonator, filtering device and electromagnetic wave device |
| CN201310364327.2A Division CN103855455B (en) | 2012-11-30 | 2012-11-30 | A kind of harmonic oscillator, resonator, filtering device and electromagnetic wave device |
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| Publication Number | Publication Date |
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| CN103022626A true CN103022626A (en) | 2013-04-03 |
| CN103022626B CN103022626B (en) | 2014-04-16 |
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| CN201210581496.7A Active CN103022626B (en) | 2012-11-20 | 2012-11-30 | Harmonic oscillator, resonant cavity, filter device and electromagnetic wave equipment |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103531872A (en) * | 2013-10-24 | 2014-01-22 | 江苏贝孚德通讯科技股份有限公司 | TM mode double-end short circuit resonant unit |
| CN104113296A (en) * | 2013-04-18 | 2014-10-22 | 深圳光启创新技术有限公司 | Resonator manufacture method |
| CN106025468A (en) * | 2016-07-11 | 2016-10-12 | 苏州艾福电子通讯股份有限公司 | Ceramic cavity filter |
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| CN1303139A (en) * | 1999-12-28 | 2001-07-11 | 株式会社村田制作所 | Resonator, resonator element, resonator device, filter, duplexer and communication apparatus |
| CN101499549A (en) * | 2008-02-01 | 2009-08-05 | 清华大学 | Filter |
| CN101800348A (en) * | 2010-04-01 | 2010-08-11 | 张家港保税区灿勤科技有限公司 | TM membrane dielectric resonator |
| CN102760923A (en) * | 2012-08-02 | 2012-10-31 | 深圳市国人射频通信有限公司 | Medium filter |
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| CN1303139A (en) * | 1999-12-28 | 2001-07-11 | 株式会社村田制作所 | Resonator, resonator element, resonator device, filter, duplexer and communication apparatus |
| CN101499549A (en) * | 2008-02-01 | 2009-08-05 | 清华大学 | Filter |
| CN101800348A (en) * | 2010-04-01 | 2010-08-11 | 张家港保税区灿勤科技有限公司 | TM membrane dielectric resonator |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104113296A (en) * | 2013-04-18 | 2014-10-22 | 深圳光启创新技术有限公司 | Resonator manufacture method |
| CN104113296B (en) * | 2013-04-18 | 2019-02-22 | 深圳光启创新技术有限公司 | A kind of preparation method of resonating device |
| CN103531872A (en) * | 2013-10-24 | 2014-01-22 | 江苏贝孚德通讯科技股份有限公司 | TM mode double-end short circuit resonant unit |
| CN106025468A (en) * | 2016-07-11 | 2016-10-12 | 苏州艾福电子通讯股份有限公司 | Ceramic cavity filter |
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| CN103022626B (en) | 2014-04-16 |
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Effective date of registration: 20210408 Address after: 2 / F, software building, No.9, Gaoxin Zhongyi Road, Nanshan District, Shenzhen City, Guangdong Province Patentee after: KUANG-CHI INSTITUTE OF ADVANCED TECHNOLOGY Address before: 18B, building a, CIC international business center, 1061 Xiangmei Road, Futian District, Shenzhen, Guangdong 518034 Patentee before: KUANG-CHI INNOVATIVE TECHNOLOGY Ltd. |
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