CN204927468U - Double -deck lid board cavity body wave filter - Google Patents

Double -deck lid board cavity body wave filter Download PDF

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Publication number
CN204927468U
CN204927468U CN201520690921.5U CN201520690921U CN204927468U CN 204927468 U CN204927468 U CN 204927468U CN 201520690921 U CN201520690921 U CN 201520690921U CN 204927468 U CN204927468 U CN 204927468U
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CN
China
Prior art keywords
cover plate
cavity
tuning screw
tuning
double
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Expired - Fee Related
Application number
CN201520690921.5U
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Chinese (zh)
Inventor
李登峰
黄子云
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shenzhen city high goochi Technology Co. Ltd.
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李登峰
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Priority to CN201520690921.5U priority Critical patent/CN204927468U/en
Application granted granted Critical
Publication of CN204927468U publication Critical patent/CN204927468U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model relates to a wave filter, duplexer, combiner and multiplexer field, concretely relates to double -deck lid board cavity body wave filter, including upper end open -ended cavity, detachable lid locate the cavity upper end first apron, be located first apron upper portion second cover, be located second cover towards two at least tuning screw rod of cavity one side, install the one side in first apron towards the cavity two at least resonance bar, be located two at least resonance posts of cavity bottom, tuning screw rod, resonance bar and syntonizer correspond the setting, through the tuning screw rod detachable spiro union between first apron and the second cover, tuning screw rod passes through nut detachable and installs on second cover. The utility model discloses debug efficient, the intermodulation is effectual, can improve communication quality and efficiency.

Description

Double-layer cover plate cavity body filter
Technical field
The utility model relates to filter field, particularly relates to a kind of double-layer cover plate cavity body filter.
Background technology
Along with the development of mobile communication, the telephone traffic that user uses mobile phone to produce in building increases day by day, require that indoor also cover good Mobile Communication Service, but because body of wall is thicker, area is comparatively large, the more high reason of floor in building, often there is network blind area of coverage, meanwhile, between each operator, the keen competition of user is also made indoor communications overlay network increase, disturbs aggravation, people is the deterioration causing communication quality, produces Intermodulation Interference.Intermodulation Interference refers to two different frequency signals, superposes and the signal of the new frequency of generation, when this signal drops in frequency acceptance band, will affect the normal reception of telecommunication apparatus in a certain system.
Cavity body filter, as a kind of frequency selection device, for selecting communication signal frequency and clutter outside filtering communication signal frequency or interference signal, is widely used in mobile base station, to reduce inter-modulated signal interference.
Intermodulation is the important indicator of filter product, but cavity body filter of the prior art generally comprises cavity, cover plate, resonant column and tuning screw, cover plate is provided with screwed hole, tuning screw stretches in resonant cavity by the screwed hole on cover plate, form structure capacitive with resonant column, regulate filter by the depth regulating tuning screw to screw in cover plate.On the one hand, under this regulative mode, the structure capacitive between resonant column and tuning screw is less, and debug time is long, debugging weak effect; On the other hand, the gross thickness of cover plate only has 3mm, the current density of tuning screw and cover inner surface binding site is very large, again because of screw thread always helical form, always end is had at the last half-turn screw thread of cover inner surface, this last half-turn screw thread can not well and cover plate combine closely, cause intermodulation weak effect further.
Utility model content
Based on this, be necessary to provide that a kind of debugging efficiency is high, intermodulation is effective, can improve the double-layer cover plate cavity body filter of communication quality and efficiency.
The purpose of this utility model realizes by following technical proposal: double-layer cover plate cavity body filter, comprise the cavity of upper end open, dismountable be covered on cavity upper end the first cover plate, the second cover plate being positioned at the first cover plate top, be positioned at the second cover plate towards cavity one side at least two tuning screws, be installed on the first cover plate towards cavity one side at least two resonant rods, be positioned at least two resonant columns of cavity bottom; Described tuning screw, resonant rod resonator correspondence is arranged, and be spirally connected by tuning screw is dismountable between described first cover plate and the second cover plate, described tuning screw is installed on the second cover plate by nut is dismountable.
Being improved to further technique scheme, is provided with pad between described nut and the joint face of tuning screw.
Being improved to further technique scheme, described resonant rod and the first cover plate one-body molded.
Being improved to further technique scheme, described resonant rod and the first cover plate die cast.
Being improved to further technique scheme, described second cover plate is provided with at least two screwed holes run through along its thickness direction, described tuning screw wears that screwed hole is dismountable to be installed on the second cover plate, and described nut is installed on the one side that the second cover plate deviates from cavity.
Being improved to further technique scheme, described tuning screw comprises spiro rod section and tuning section, and described tuning section is connected to spiro rod section one end away from the second cover plate, and the outer surface of described tuning section has insulating barrier.
The beneficial effects of the utility model are:
1, the first cover plate and the second cover plate that are detachably spirally connected is provided with above cavity, in debug process, by tuning screw top resonant rod, make the first cover plate that slight local deformation occur, thus the distance changed between tuning screw and the first cover plate, reduce Intermodulation Interference, improve communication quality and efficiency, on the other hand, be provided with two cover plates, second cover plate is contacted with the first cover plate by the tuning screw on it, two cover plates directly do not contact, substantially reduce the contact area of the first cover plate and the second cover plate, reduce intermodulation, and the first cover plate can isolate tuning screw and cavity, be conducive to the current density reducing tuning screw and the first cover plate and the second cover plate, tuning screw and the first cover plate face binding site is avoided to form very strong intermodulation source, further reduction Intermodulation Interference, improve communication quality and efficiency.
2, be provided with pad between nut and the joint face of tuning screw, the faying face of sealing nut and tuning screw, the two combined more tight, reduce Intermodulation Interference further, improve communication quality and efficiency.
3, resonant rod and the first cover plate is one-body molded or die cast, on the installation base of cavity, the scheme of screwed hole is opened compared to existing technology, need not installation base be set, not only reduce taking of cavity space, further reduction Intermodulation Interference, raising communication quality and efficiency, nor must on installation base tapping female bore, decrease the processing step of tapping female bore on the first cover plate, simplify processing technology.
4, tuning screw comprises spiro rod section and tuning section, and tuning section is connected to spiro rod section one end away from the second cover plate, and the outer surface of described tuning section has insulating barrier.Tuning screw is owing to being provided with insulating barrier, the field intensity on tuning screw can be reduced, reduce the current density of tuning screw and the first cover inner surface binding site, significantly can reduce the impact of tuning screw on intermodulation when ensureing regulating frequency, reducing Intermodulation Interference further, improving communication quality and efficiency.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of tuning screw of the present utility model.
Embodiment
As shown in Figure 1, be structural representation of the present utility model.
Double-layer cover plate cavity 110 filter 100, comprise the cavity 110 of upper end open, dismountable be covered on cavity 110 upper end the first cover plate 120, the second cover plate 130 being positioned at the first cover plate 120 top, be positioned at the second cover plate 130 towards cavity 110 one side at least two tuning screws 140, be installed on the first cover plate 120 towards cavity 110 one side at least two resonant rods 150, be positioned at least two resonant columns 190 bottom cavity 110; Tuning screw 140 and resonant rod 150 correspondence are arranged, and be spirally connected by tuning screw 140 is dismountable between the first cover plate 120 and the second cover plate 130, tuning screw 140 is installed on the second cover plate 130 by nut 160 is dismountable.
The first cover plate 120 and the second cover plate 130 be detachably spirally connected is provided with above cavity 110, in debug process, resonant rod 150 is pushed up by tuning screw 140, make the first cover plate 120 that slight local deformation occur, thus the distance changed between tuning screw 140 and the first cover plate 120, reduce Intermodulation Interference, improve communication quality and efficiency, on the other hand, be provided with two cover plates, the gross thickness of cover plate is increased, adjusting screw(rod) is combined closely with the first cover plate 120 and the second cover plate 130, and the current density of tuning screw 140 and the first cover plate 120 and the second cover plate 130 can be reduced, tuning screw 140 and cover plate face binding site is avoided to form very strong intermodulation source, further reduction Intermodulation Interference, improve communication quality and efficiency.
Be provided with pad 170 between the joint face of nut 160 and tuning screw 140, sealing nut 160 and the faying face of tuning screw 140, make the two combine more tight, reduce Intermodulation Interference further, improve communication quality and efficiency.
Resonant rod 150 and the first cover plate 120 is one-body molded or die cast, on the installation base of cavity 110, the scheme of screwed hole is opened compared to existing technology, need not installation base be set, not only reduce taking of cavity 110 space, further reduction Intermodulation Interference, raising communication quality and efficiency, nor must on installation base tapping female bore, decrease the processing step of on the cover board tapping female bore, simplify processing technology.
Second cover plate 130 is provided with at least two screwed holes 131 run through along its thickness direction, and tuning screw 140 wears that screwed hole 131 is dismountable to be installed on the second cover plate 130, and nut 160 is installed on the one side that the second cover plate 130 deviates from cavity 110.
As shown in Figure 2, be the structural representation of tuning screw of the present utility model.Tuning screw 140 comprises spiro rod section 141 and tuning section 142, and tuning section 142 is connected to spiro rod section 141 one end away from the second cover plate 130, and the outer surface of tuning section 142 has insulating barrier 143.Tuning screw 140 is owing to being provided with insulating barrier 143, the field intensity on tuning screw 140 can be reduced, reduce the current density of tuning screw 140 and the first cover plate 120 inner surface binding site, significantly can reduce the impact of tuning screw 140 on intermodulation when ensureing regulating frequency, reducing Intermodulation Interference further, improving communication quality and efficiency.
Operation principle of the present utility model is:
First by die cast or integrated mode, resonant rod 150 is arranged on the first cover plate 120, by tuning screw 140, first cover plate 120 is connected with the second cover plate 130, and pad 170 is set between nut 160 and the joint face of the second cover plate 130; And then double-layer cover plate is arranged on the openend of cavity 110; When debugging, by regulating tuning screw 140, making its top resonant rod 150 downwards, making the first cover plate 120 that slight local deformation occur, thus change the distance between resonant rod 150 and resonant column 190, reduce Intermodulation Interference, improve communication quality and efficiency.
Technical scheme in the utility model, except can be applicable to cavity body filter, is also applicable to metal resonators filter, dielectric resonator filter, duplexer, mixer, multiplexer etc.
The above embodiment only have expressed several execution mode of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection range of the present utility model.Therefore, the protection range of the utility model patent should be as the criterion with claims.

Claims (6)

1. double-layer cover plate cavity body filter, is characterized in that: comprise the cavity of upper end open, dismountable be covered on cavity upper end the first cover plate, the second cover plate being positioned at the first cover plate top, be positioned at the second cover plate towards cavity one side at least two tuning screws, be installed on the first cover plate towards cavity one side at least two resonant rods, be positioned at least two resonant columns of cavity bottom; Described tuning screw, resonant rod resonator correspondence is arranged, and be spirally connected by tuning screw is dismountable between described first cover plate and the second cover plate, described tuning screw is installed on the second cover plate by nut is dismountable.
2. double-layer cover plate cavity body filter according to claim 1, is characterized in that: be provided with pad between described nut and the joint face of tuning screw.
3. double-layer cover plate cavity body filter according to claim 2, is characterized in that: described resonant rod and the first cover plate one-body molded.
4. double-layer cover plate cavity body filter according to claim 2, is characterized in that: described resonant rod and the first cover plate die cast.
5. the double-layer cover plate cavity body filter according to claim 3 or 4, it is characterized in that: described second cover plate is provided with at least two screwed holes run through along its thickness direction, described tuning screw wears that screwed hole is dismountable to be installed on the second cover plate, and described nut is installed on the one side that the second cover plate deviates from cavity.
6. double-layer cover plate cavity body filter according to claim 5, is characterized in that: described tuning screw comprises spiro rod section and tuning section, and described tuning section is connected to spiro rod section one end away from the second cover plate, and the outer surface of described tuning section has insulating barrier.
CN201520690921.5U 2015-09-07 2015-09-07 Double -deck lid board cavity body wave filter Expired - Fee Related CN204927468U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201520690921.5U CN204927468U (en) 2015-09-07 2015-09-07 Double -deck lid board cavity body wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201520690921.5U CN204927468U (en) 2015-09-07 2015-09-07 Double -deck lid board cavity body wave filter

Publications (1)

Publication Number Publication Date
CN204927468U true CN204927468U (en) 2015-12-30

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201520690921.5U Expired - Fee Related CN204927468U (en) 2015-09-07 2015-09-07 Double -deck lid board cavity body wave filter

Country Status (1)

Country Link
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206320A (en) * 2016-12-20 2018-06-26 Ace技术株式会社 Utilize the wave filter and notch diplexer of disresonance node
CN112615115A (en) * 2020-12-14 2021-04-06 深圳国人科技股份有限公司 Filtering tuning device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108206320A (en) * 2016-12-20 2018-06-26 Ace技术株式会社 Utilize the wave filter and notch diplexer of disresonance node
CN108206320B (en) * 2016-12-20 2020-03-31 Ace技术株式会社 Filter and duplexer using non-resonant node
CN112615115A (en) * 2020-12-14 2021-04-06 深圳国人科技股份有限公司 Filtering tuning device

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Date Code Title Description
GR01 Patent grant
C14 Grant of patent or utility model
TR01 Transfer of patent right

Effective date of registration: 20180211

Address after: 518000 Shenzhen Baoan District Songgang street Baoan District Songgang street Luotian community Third Industrial Zone No. 8 Jaguar electronic G Building 2 layer 201

Patentee after: Shenzhen city high goochi Technology Co. Ltd.

Address before: No. 38, Xin Wan Village, Xin Wan Village, Sha Wo Village, Hubei, Ezhou, Hubei

Patentee before: Li Dengfeng

Effective date of registration: 20180211

Address after: 518000 Shenzhen Baoan District Songgang street Baoan District Songgang street Luotian community Third Industrial Zone No. 8 Jaguar electronic G Building 2 layer 201

Patentee after: Shenzhen city high goochi Technology Co. Ltd.

Address before: No. 38, Xin Wan Village, Xin Wan Village, Sha Wo Village, Hubei, Ezhou, Hubei

Patentee before: Li Dengfeng

TR01 Transfer of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20151230

Termination date: 20200907

CF01 Termination of patent right due to non-payment of annual fee