CN102122742B - Cavity filter with rotary coupling regulation structure - Google Patents
Cavity filter with rotary coupling regulation structure Download PDFInfo
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- CN102122742B CN102122742B CN 201010586672 CN201010586672A CN102122742B CN 102122742 B CN102122742 B CN 102122742B CN 201010586672 CN201010586672 CN 201010586672 CN 201010586672 A CN201010586672 A CN 201010586672A CN 102122742 B CN102122742 B CN 102122742B
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Abstract
The invention discloses a cavity filter with a rotary coupling regulation structure, comprising a body and a cover plate, wherein at least three resonant cavities are arranged at the body, bulkheads are arranged among the resonant cavities; a cylindrical groove with an arc-shaped inner wall surface is arranged in each bulkhead; openings corresponding to the resonant cavities are arranged at the two sides of the cylindrical groove; the rotary coupling regulation structure is rotationally matched in the cylindrical groove; the rotary coupling regulation structure comprises a cylindrical insulation supporting block and a capacitive coupler fixedly arranged on the insulation supporting block; the insulation supporting block is provided with arc-shaped outer wall surface matched with the cylindrical groove; and the outer end of the capacitive coupler penetrates the openings and is coupled with the resonant cavities. Through the rotary coupling regulation structure, the capacitive cross coupling strength of the cavity filter can be very conveniently regulated from the outside of the cover plate.
Description
Technical field
The present invention relates to a kind of radio frequency, microwave cavity filter, the cavity body filter that specifically has rotary coupling adjustment structure.
Background technology
Along with the continuous development of wireless communication technology, transmitting power is increasing, and frequency resource is more and more nervous.Transmitting and receiving between the signal in order not disturb the transmitting-receiving inhibition that needs are very high mutually of same communication system; Need good antijamming capability between different communication systems and the communication pattern, also require outer big as far as possible being attenuated of signal of band.The cutting apart, develop all and realize with filter of all frequency ranges.And the microwave radio device that can bear high-power, little loss, high inhibition is undoubtedly coaxial cavity filter.The design principle of cavity body filter is very classical, ripe.Such as by between non-adjacent chamber, adding capacitive or inductive coupled, with by advance in order the coupling microwave signal compare, coupling between the non-adjacent chamber of this leap produced one+degree or-phase shift of Du, it is superimposed upon on the signal of the coupling of advancing in order, just outside filter passband, produced one or two transmission zero, thereby the band that has improved filter greatly suppresses outward, thereby can reduce the number in chamber, has greatly reduced the loss of filter.Volume and the cost of final filter also can reduce greatly.
Above-mentioned transmission zero is produced by perception or capacitive cross-couplings.A coupling device is placed in the capacitively coupled realization normally partition wall in the middle of two non-adjacent cavitys, metal coupling bar two wherein reaches respectively in two cavitys, face resonator, this Metallic rod is supported on by collets on the partition wall between two cavitys that will be coupled.Have rectangular cylindrical groove on the partition wall, a dielectric support block rectangular or the H type embeds or rides in the groove.This structure, the adjusting of capacitive coupling amount can only namely be adjusted the length of coupling bar by adjusting the distance of Metallic rod and resonator, or adjusts the coupling area of coupling bar and resonator, as by adding the weldering metal dish at the Metallic rod two ends, perhaps Metallic rod is made into methods such as sheet metal realize.But these methods all must just can be done through the adjustment of repeated open cover plate in development and obtain.This not only brings very big inconvenience, has prolonged the construction cycle, also might open the cover plate number of times too much and causes cover plate distortion and cavity screw thread destroyed and cause microwave leakage, finally scraps cavity and cover plate.In purchasing in batches, also very strict to the dimensional requirement of coupling metalwork, this has increased purchase cost undoubtedly.In producing assembling, various sizes tolerance and rigging error are superimposed, and are very easy to take place coupling and measure excessive too small situation, and only way is exactly to uncap to adjust the size of male part, and this has reduced production efficiency undoubtedly again, has increased production cost.
Summary of the invention
Technical problem to be solved by this invention is at above-mentioned prior art present situation, cavity body filter with rotary coupling adjustment structure is provided, solve the problem that the capacitive coupling is not easy to regulate, can regulate the coupling amount of capacitive coupler without the repeated open cover plate easily.
The present invention solves the problems of the technologies described above the technical scheme that adopts: the cavity body filter with rotary coupling adjustment structure, comprise body and cover plate, body is shaped at least three resonant cavitys, be provided with the next door between the resonant cavity, be shaped on the cylindrical groove of band arc inner wall face in the next door, the both sides of cylindrical groove are shaped on the opening of corresponding resonant cavity; Rotary coupling adjustment structure has been rotatably assorted in cylindrical groove; Rotary coupling adjustment structure comprises the dielectric support block and the capacitive coupler that is fixedly mounted on the dielectric support block of cylindricality, and dielectric support block is shaped on the arc outer wall face that matches with cylindrical groove, and opening is passed in the outer end of capacitive coupler, is coupled with resonant cavity.
For optimizing technique scheme, the measure of taking also comprises:
Fixedly have resonator, resonator to comprise in the above-mentioned resonant cavity to be fixed on the resonant rod bottom the resonant cavity, resonant rod top is shaped on axial lumen pore, is movably set with tuning screw rod on the cover plate, and the bottom of tuning screw rod is stretched in the lumen pore of resonant rod.
Above-mentioned dielectric support block top is shaped on groove, and cover plate is shaped on the through hole of respective slot, cooperates sealed screw is installed in through hole.Groove is preferably in-line groove or the cross bath of adaptive tightening tool.
The bottom of above-mentioned cylindrical groove is spherical concave surface, and the bottom of dielectric support block is shaped on the spherical convex surface that matches.
Above-mentioned capacitive coupler is metallic object, is fixedly mounted on the both sides of dielectric support block.
Above-mentioned metallic object is shaft-like or sheet, is fixed on 1/4 to 1/3 place, bottom of dielectric support block.
The end of above-mentioned metallic object is shaped on kink or bulge.
The degree of depth of above-mentioned cylindrical groove is 10mm to 14mm, and the gap between dielectric support block and the cover plate is 0.05mm to 2mm.
Above-mentioned body is shaped on three resonant cavitys that are triangularly arranged, and capacitive coupler is arranged between two resonant cavitys of filter passband low side.
Above-mentioned body is shaped on four resonant cavitys, and capacitive coupler is arranged between two resonant cavitys on filter passband both sides.
Compared with prior art, the cavity body filter with rotary coupling adjustment structure of the present invention, novel structure, production assembling are very easy to, and adjustment process and subsequent treatment are very simple, and practicality is extremely strong.Can accomplish easily capacitive cross-couplings intensity to be regulated from the cover plate outside by rotary coupling adjustment structure, no matter the size of the size resonator of resonant cavity how, always there are enough spaces to arrange dielectric support block and capacitive coupler, therefore can dwindle the volume of the cavity body filter with rotary coupling adjustment structure greatly.
Description of drawings
Fig. 1 is the structure vertical view of the embodiment of the invention 1;
Fig. 2 is the structure vertical view after the embodiment of the invention 1 is equipped with;
Fig. 3 is the side sectional view of the embodiment of the invention 1 coupled structure;
Fig. 4 is the structure vertical view of the embodiment of the invention 2;
Fig. 5 is the structure vertical view after the embodiment of the invention 2 is equipped with;
Fig. 6 is the side sectional view of the embodiment of the invention 2 coupled structures;
Fig. 7 is the structural representation of capacitive coupler;
Fig. 8 is the structural representation of the capacitive coupler of the embodiment of the invention 3;
Fig. 9 is the structural representation of the capacitive coupler of the embodiment of the invention 4.
Embodiment
Below in conjunction with accompanying drawing embodiments of the invention are described in further detail.
Fig. 1 is to Figure 9 shows that structural representation of the present invention.
Reference numeral wherein is: body 1, resonant cavity 11, next door 12, arc inner wall face 12a, cylindrical groove 13, opening 14, dielectric support block 15, groove 15a, spherical convex surface 15b, metallic object 16, kink 16a, bulge 16b, cover plate 2, through hole 2a, sealed screw 3, resonator 4, resonant rod 41, lumen pore 41a, tuning screw rod 42.
The cavity body filter with rotary coupling adjustment structure of present embodiment comprises body 1 and cover plate 2, and body 1 is shaped on four resonant cavitys 11, and capacitive coupler is arranged between two resonant cavitys 11 on filter passband both sides.
As shown in Figure 1, be provided with next door 12 between the resonant cavity 11, next door 12 is shaped on the cylindrical groove 13 of band arc inner wall face 12a, and the both sides of cylindrical groove 13 are shaped on the opening 14 of corresponding resonant cavity 11.
As shown in Figure 2, the dielectric support block 15 of the cylindricality that is rotatably assorted in cylindrical groove 13 is equipped with capacitive coupler in the dielectric support block 15, and opening 14 is passed in the outer end of described capacitive coupler, is coupled with resonant cavity 11.
The bottom of cylindrical groove 13 is spherical concave surface, and the bottom of dielectric support block 15 is shaped on the spherical convex surface 15b that matches.The degree of depth of cylindrical groove 13 is 10mm to 14mm, and the gap between dielectric support block 15 and the cover plate 2 is 0.05mm to 2mm.
Capacitive coupler is metallic object 16.The capacitive coupler of present embodiment as shown in Figure 7, metallic object 16 is shaft-like, is fixed on 1/4 to 1/3 place, bottom of dielectric support block 15.
As shown in Figure 3, cover plate 2 is shaped on the through hole 2a of respective slot 15a, and through hole 2a is combined with sealed screw 3.During adjustment, the sealed screw 3 of outwarding winding stretches into through hole 2a with screwdriver and matches with groove 15a, i.e. rotatable dielectric support block 15 and capacitive coupler.Along with the change of rotational angle, coupling distance and coupling area between capacitive coupler and the resonator 4 have in fact also changed.Obviously, when capacitive coupler faced resonator 4, it was the strongest to be coupled, and along with the angle of rotation is increasing, coupling has namely reached the purpose of regulating the coupling amount by dying down by force.The size of regulated quantity is directly proportional with the size of cylindrical groove 13 both sides openings 14.After adjusting to the right place, sealed screw 3 is screwed in through hole 2a compress dielectric support block 15, simultaneously the through hole 2a on the seal cover board 2.
The cavity body filter with rotary coupling adjustment structure of present embodiment comprises body 1 and cover plate 2, and body 1 is shaped on three resonant cavitys that are triangularly arranged 11, and capacitive coupler is arranged between two resonant cavitys 11 of filter passband low side.
As shown in Figure 4, be provided with next door 12 between the resonant cavity 11, next door 12 is shaped on the cylindrical groove 13 of band arc inner wall face 12a, and the both sides of cylindrical groove 13 are shaped on the opening 14 of corresponding resonant cavity 11.
As shown in Figure 5, the dielectric support block 15 of the cylindricality that is rotatably assorted in cylindrical groove 13 is equipped with capacitive coupler in the dielectric support block 15, and opening 14 is passed in the outer end of described capacitive coupler, is coupled with resonant cavity 11.
The bottom of cylindrical groove 13 is spherical concave surface, and the bottom of dielectric support block 15 is shaped on the spherical convex surface 15b that matches.The degree of depth of cylindrical groove 13 is generally 10mm to 14mm, and the gap between dielectric support block 15 and the cover plate 2 is 0.05mm to 2mm.
Capacitive coupler is metallic object 16.The capacitive coupler of present embodiment as shown in Figure 7, metallic object 16 is shaft-like, is fixed on 1/4 to 1/3 place, bottom of dielectric support block 15.
As shown in Figure 6, cover plate 2 is shaped on the through hole 2a of respective slot 15a, and through hole 2a is combined with sealed screw 3.During adjustment, the sealed screw 3 of outwarding winding stretches into through hole 2a with screwdriver and matches with groove 15a, i.e. rotatable dielectric support block 15 and capacitive coupler.Along with the change of rotational angle, coupling distance and coupling area between capacitive coupler and the resonator 4 have in fact also changed.Obviously, when capacitive coupler faced resonator 4, it was the strongest to be coupled, and along with the angle of rotation is increasing, coupling has namely reached the purpose of regulating the coupling amount by dying down by force.The size of regulated quantity is directly proportional with the size of cylindrical groove 13 both sides openings 14.After adjusting to the right place, sealed screw 3 is screwed in through hole 2a compress dielectric support block 15, simultaneously the through hole 2a on the seal cover board 2.
On the basis of embodiment 1 or embodiment 2, the capacitive coupler of present embodiment is shaped on bulge 16b at the two ends of metallic object 16 as shown in Figure 8, and capacitive coupler integral body is dumbbell shape.
On the basis of embodiment 1 or embodiment 2, the capacitive coupler of present embodiment as shown in Figure 9, metallic object 16 is sheet, two ends bend downwards and constitute kink 16a.
Cavity body filter with rotary coupling adjustment structure of the present invention, novel structure, production assembling are very easy to, and adjustment process and subsequent treatment are very simple, and practicality is extremely strong.No matter the size of the size resonator 4 of resonant cavity 11 how, always there are enough spaces to arrange dielectric support block 15 and capacitive coupler, because partition wall is innately arranged between the non-adjacent resonant cavity 11, do not need extra place to realize it.
Most preferred embodiment of the present invention is illustrated, and various variations or the remodeling made by those of ordinary skills can not depart from the scope of the present invention.
Claims (1)
1. the cavity body filter that has rotary coupling adjustment structure, comprise body (1) and cover plate (2), it is characterized in that: described body (1) is shaped at least three resonant cavitys (11), be provided with next door (12) between the described resonant cavity (11), be shaped on the cylindrical groove (13) of band arc inner wall face (12a) in the described next door (12), the both sides of cylindrical groove (13) are shaped on the opening (14) of corresponding resonant cavity (11); Rotary coupling adjustment structure has been rotatably assorted in described cylindrical groove (13); Described rotary coupling adjustment structure comprises the dielectric support block (15) of cylindricality and is fixedly mounted on capacitive coupler on the dielectric support block (15), described dielectric support block (15) is shaped on the arc outer wall face that matches with cylindrical groove (13), described opening (14) is passed in the outer end of described capacitive coupler, is coupled with resonant cavity (11); Resonator (4) is fixedly arranged in the described resonant cavity (11), described resonator (4) comprises the resonant rod (41) that is fixed on resonant cavity (11) bottom, described resonant rod (41) top is shaped on axial lumen pore (41a), be movably set with tuning screw rod (42) on the described cover plate (2), the bottom of described tuning screw rod (42) is stretched in the lumen pore (41a) of resonant rod (41); Described dielectric support block (15) top is shaped on groove (15a), and described cover plate (2) is shaped on the through hole (2a) of respective slot (15a), cooperates sealed screw (3) is installed in through hole (2a); The bottom of described cylindrical groove (13) is spherical concave surface, and the bottom of described dielectric support block (15) is shaped on the spherical convex surface (15b) that matches; Described capacitive coupler is metallic object (16), is fixedly mounted on the both sides of dielectric support block (15); Described metallic object (16) is shaft-like or sheet, is fixed on 1/4 to 1/3 place, bottom of dielectric support block (15); The end of described metallic object (16) is shaped on kink (16a) or bulge (16b); The degree of depth of described cylindrical groove (13) is 10mm to 14mm, and the gap between described dielectric support block (15) and the cover plate (2) is 0.05mm to 2mm; Described body (1) is shaped on three resonant cavitys that are triangularly arranged (11), and described capacitive coupler is positioned between two resonant cavitys (11) of filter passband low side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586672 CN102122742B (en) | 2010-12-02 | 2010-12-02 | Cavity filter with rotary coupling regulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010586672 CN102122742B (en) | 2010-12-02 | 2010-12-02 | Cavity filter with rotary coupling regulation structure |
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| Publication Number | Publication Date |
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| CN102122742A CN102122742A (en) | 2011-07-13 |
| CN102122742B true CN102122742B (en) | 2013-10-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201010586672 Expired - Fee Related CN102122742B (en) | 2010-12-02 | 2010-12-02 | Cavity filter with rotary coupling regulation structure |
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Families Citing this family (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881970B (en) * | 2011-07-14 | 2015-03-25 | 凯镭思通讯设备（上海）有限公司 | Capacitive cross coupling device for coaxial cavity filter |
| CN102832429B (en) * | 2012-09-13 | 2015-01-14 | 深圳市大富科技股份有限公司 | Coaxial cavity filter |
| CN104871363B (en) * | 2012-12-24 | 2017-03-15 | 上海贝尔股份有限公司 | For the scalable coupling device that the input resonator and/or output resonator with band filter is used together |
| CN105190989B (en) * | 2013-03-18 | 2018-09-21 | 上海贝尔股份有限公司 | With adjustable coupler that bandpass filter is used together |
| CN103441317B (en) * | 2013-09-05 | 2015-07-15 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
| US9287600B2 (en) * | 2014-03-26 | 2016-03-15 | Alcatel-Lucent Shanghai Bell Co., Ltd. | Adjustable phase-inverting coupling loop |
| CN104882660B (en) * | 2014-04-30 | 2017-11-28 | 西安空间无线电技术研究所 | A kind of C frequency ranges test coupler |
| WO2016183818A1 (en) * | 2015-05-20 | 2016-11-24 | 华为技术有限公司 | Filter and electromagnetic apparatus |
| CN104900952B (en) * | 2015-06-23 | 2018-06-15 | 武汉凡谷陶瓷材料有限公司 | The coupled structure of bimodulus dielectric resonator and metal resonators |
| CN105356019B (en) * | 2015-11-25 | 2019-07-30 | 宁波泰立电子科技有限公司 | A kind of filter for eliminating structure with spuious coupling |
| WO2017096534A1 (en) * | 2015-12-08 | 2017-06-15 | 华为技术有限公司 | Cross-coupling device for filters, and filter |
| CN107146928B (en) * | 2017-03-10 | 2019-11-15 | 深圳市兆威机电股份有限公司 | Fm components and filter |
| CN110544811B (en) * | 2018-05-29 | 2021-08-20 | 上海华为技术有限公司 | Filter coupling structure and processing method |
| CN110677135A (en) * | 2019-10-28 | 2020-01-10 | 北京联恒众达科技中心(有限合伙) | Multichannel isolation filter box structure convenient to maintain and debug |
| CN113725577A (en) * | 2020-05-26 | 2021-11-30 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
| CN113839161A (en) * | 2020-06-23 | 2021-12-24 | 大富科技(安徽)股份有限公司 | Filter and communication equipment |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5285178A (en) * | 1992-10-07 | 1994-02-08 | Telefonaktiebolaget L M Ericsson | Combiner resonator having an I-beam shaped element disposed within its cavity |
| GB9721803D0 (en) * | 1997-10-15 | 1997-12-17 | Filtronic Ltd | Composite resonator |
| US6356171B2 (en) * | 1999-03-27 | 2002-03-12 | Space Systems/Loral, Inc. | Planar general response dual-mode cavity filter |
| US6466111B1 (en) * | 1999-12-06 | 2002-10-15 | Kathrein Inc., Scala Division | Coupler for resonant cavity |
| CN201117780Y (en) * | 2007-11-12 | 2008-09-17 | 摩比天线技术（深圳）有限公司 | Coaxial cavity resonator coupled structure |
| CN201838697U (en) * | 2010-11-04 | 2011-05-18 | 宁波泰立电子科技有限公司 | Rotary capacitive cross coupling cavity filter |
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- 2010-12-02 CN CN 201010586672 patent/CN102122742B/en not_active Expired - Fee Related
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| CN102122742A (en) | 2011-07-13 |
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Effective date of registration: 20151104 Address after: 224000, Yancheng City, Jiangsu province Dongtai City South Town Industrial Park Patentee after: Dongtai Junan Electronic Technology Co., Ltd. Address before: 315051 Zhejiang province Ningbo City Jiangdong District Qixin Road No. 167 building 6 Ningbo Taili Electronic Technology Co. Ltd. Patentee before: Ningbo Taili Electronics Co., Ltd. |
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Granted publication date: 20131009 Termination date: 20171202 |