CN104752797A - Microband circuit board and band stop filter - Google Patents
Microband circuit board and band stop filter Download PDFInfo
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- CN104752797A CN104752797A CN201510147331.2A CN201510147331A CN104752797A CN 104752797 A CN104752797 A CN 104752797A CN 201510147331 A CN201510147331 A CN 201510147331A CN 104752797 A CN104752797 A CN 104752797A
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Abstract
The invention provides a microband circuit board which comprises a board body, a signal source end, a load end, a first microband line and a second microband line. Through holes are formed in the board body, the signal source end is arranged on the board body to receive input signals, the load end is arranged on the board body to output signals, the first microband line and the second microband line are laid on the board body, the first microband line comprises a connecting line and coupling line discs, the connecting line is connected with the signal source end, the load end and the coupling line discs, the coupling line discs are formed around the through holes and correspond to corresponding resonant rods, the coupling line discs and the resonant rods form a microband line resonator, the coupling line discs are insulated from corresponding tuning screws, the second microband line is laid on the board body, and a first end of the second microband line is connected with the connecting line while a second end of the same is in an open-circuit state to enable the second microband line to form a branched line resonator. By the microband circuit board, stop band width of the band stop filter is increased, and needs of the industry are met. The invention further provides the band stop filter.
Description
Technical field
The present invention relates to communication radio frequency technical field, especially relate to a kind of microstripline plate and band stop filter.
Background technology
High frequency filter is widely used in modern communications field, and basic function is: allow useful signal pass through on signal link to greatest extent, curbed to greatest extent by unwanted signals.According to Function Classification, existing high frequency filter comprises band pass filter, band stop filter, low pass filter and high pass filter etc.So-called band stop filter, its essential characteristic is ensure to curb to greatest extent the signal of certain frequency range, and allows all the other signals pass through to greatest extent.Band stop filter has broadband, high suppression, low-loss feature, is widely used in communication and broadband services field.But the bandwidth of rejection of current band stop filter still cannot meet industry demand mutually.
Summary of the invention
Embodiments provide a kind of microstripline plate and band stop filter, to improve the bandwidth of rejection of band stop filter to meet industry demand.
First aspect present invention provides a kind of microstripline plate, and described microstripline plate is placed in band stop filter, and described microstripline plate comprises:
Plate body, described plate body offers the through hole of the tuning screw of corresponding described band stop filter, carrys out corresponding resonant rod in corresponding band stop filter to make described tuning screw through described through hole;
Signal source, described signal source is arranged on described plate body, for Received signal strength;
Load end, described load end is arranged on described plate body, exports for signal;
First microstrip line, described first microstrip line is layed on described plate body, described first microstrip line comprises connecting line and coupling drum, described connecting line connects described signal source, described load end and described coupling drum, described coupling line dish is formed in around described through hole, and corresponding corresponding resonant rod, to form mini strip line resonator with described resonant rod, wherein, described coupling drum and corresponding tuning screw insulate;
Second microstrip line, described second microstrip line is layed on described plate body, and the first end of described second microstrip line connects described connecting line, and the second end of described second microstrip line is in open-circuit condition, forms minor matters line resonator to make described second microstrip line.
In the first possible implementation of first aspect, the first end of described second microstrip line is 1/4th first wave length with the adjacent distance be coupled between drum, wherein, described first wave length is the wavelength that the band connection frequency of signal that described signal source termination is received is corresponding.
In the implementation that the second of first aspect is possible, or in conjunction with the first possible implementation of first aspect, in the implementation that the second is possible, the length of described second microstrip line is 1/4th second wave lengths, wherein, described second wave length is wavelength corresponding to the stop-band frequency of signal that signal source termination is received.
In the third possible implementation of first aspect, the perisporium of described through hole has spacing with the tuning screw through described through hole.
In conjunction with the third possible implementation of first aspect, in the 4th kind of possible implementation, described coupling line dish is formed in around described through hole, and extends into the edge of described through hole.
In the 5th kind of possible implementation of first aspect, the perisporium of described through hole contacts with the tuning screw through described through hole, and described coupling line dish is formed in around described through hole, and has spacing with the edge of described through hole.
In the 6th kind of possible implementation of first aspect, the quantity of described through hole is identical with the tuning screw of described band stop filter and the quantity of resonant rod, the quantity of described coupling drum and the identical of described through hole, and described coupling drum and described through hole one_to_one corresponding.
Second aspect provides a kind of band stop filter, the microstripline plate that any one the possible implementation comprising cavity, resonant rod, cover plate, tuning screw and first aspect provides, and described resonant rod is arranged in described cavity; Described cover plate is fixed on described cavity, and to form host cavity, described resonant rod is positioned at described collecting cavity; Described tuning screw is arranged on described cover plate, and described tuning screw runs through the next corresponding described resonant rod of described cover plate.
In the first possible implementation of second aspect, described tuning screw is arranged on described cover plate rotationally, to adjust distance between the first end of described tuning screw and described resonant rod by rotating described tuning screw.
In the kind of possible implementation of second aspect, being formed with support portion near top place in described cavity, for supporting described micro-single line plate, thus described micro-single line plate being arranged in described host cavity.
As can be seen from the above technical solutions, a kind of microstripline plate that the embodiment of the present invention provides, be applied in band stop filter, described microstripline plate comprises plate body, signal source, load end, the first microstrip line and the second microstrip line, described plate body offers the through hole of the tuning screw of corresponding described band stop filter, carry out corresponding resonant rod in corresponding band stop filter to make described tuning screw through described through hole; Described signal source is arranged on described plate body, for Received signal strength; Described load end is arranged on described plate body, exports for signal; Described first microstrip line is layed on described plate body, described first microstrip line comprises connecting line and coupling drum, described connecting line connects described signal source, described load end and described coupling drum, described coupling line dish is formed in around described through hole, and corresponding corresponding resonant rod, to form mini strip line resonator with described resonant rod, wherein, described coupling drum and corresponding tuning screw insulate; Described second microstrip line is layed on described plate body, and the first end of described second microstrip line connects described connecting line, and the second end of described second microstrip line is in open-circuit condition, forms minor matters line resonator to make described second microstrip line.Therefore, when microstripline plate of the present invention is applied to band stop filter, described band stop filter has mini strip line resonator and minor matters line resonator, thus add the quantity of described band stop filter, namely improve the degree of coupling of described band stop filter, and then width is treated in the resistance adding described band stop filter.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described describing the required accompanying drawing used to embodiment below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The schematic diagram of a kind of microstripline plate that Fig. 1 provides for first aspect of the present invention embodiment;
Fig. 2 is the decomposed schematic diagram that the microstripline plate of Fig. 1 is applied in band stop filter;
Fig. 3 is to applying the analogous diagram having the band stop filter of the band stop filter of the microstripline plate of Fig. 1 and the microstripline plate of non-application drawing 1 to emulate;
The exploded view of a kind of band stop filter that Fig. 4 provides for second aspect of the present invention embodiment;
Fig. 5 is the partial enlarged drawing of Fig. 4.
Specific embodiment
The invention provides a kind of keyset and electronic building brick.
For making goal of the invention of the present invention, feature, advantage can be more obvious and understandable, below in conjunction with the accompanying drawing in the embodiment of the present invention, technical scheme in the embodiment of the present invention is clearly and completely described, obviously, the embodiments described below are only the present invention's part embodiments, and the embodiment of not all.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Term " first ", " second ", " the 3rd " " 4th " etc. (if existence) in specification of the present invention and claims and above-mentioned accompanying drawing are for distinguishing similar object, and need not be used for describing specific order or precedence.Should be appreciated that the data used like this can be exchanged in the appropriate case, so as embodiments of the invention described herein such as can with except here diagram or describe those except order implement.In addition, term " comprises " and " having " and their any distortion, intention is to cover not exclusive comprising, such as, contain those steps or unit that the process of series of steps or unit, method, system, product or equipment is not necessarily limited to clearly list, but can comprise clearly do not list or for intrinsic other step of these processes, method, product or equipment or unit.
Below by specific embodiment, be described in detail respectively.
Please refer to Fig. 1 and Fig. 2, first aspect of the present invention embodiment provides a kind of microstripline plate 100.Described microstripline plate 100 is placed in band stop filter 200.Wherein, described band stop filter 200 comprises cavity 210, resonant rod 220, cover plate 230 and tuning screw (not shown).Described resonant rod 220 is arranged in described cavity 210.Described cover plate 230 is fixed on described cavity 210, to form host cavity 250.Described resonant rod 220 is positioned at described collecting cavity 250.Described tuning screw is arranged on described cover plate 230, and described tuning screw runs through the corresponding described resonant rod 220 of described cover plate 230.
Described microstripline plate 100 comprises plate body 10, first signal source 20, load end 40, first microstrip line 50 and the second microstrip line 60.
Described plate body 10 offers the through hole 11 of the tuning screw 240 of corresponding described band stop filter 200, to make described tuning screw 249 through corresponding resonant rod 220 in the corresponding band stop filter 200 of described through hole 11.
Wherein, described tuning screw 240 comprises the first end and the second end that are oppositely arranged.Described tuning screw 240 runs through described cover plate 230, and described tuning screw 240 is positioned at the both sides of described cover plate 230.The first end of described tuning screw 240 is by the corresponding described resonant rod 220 of described through hole 11.Wherein, the quantity of described through hole 11 is identical with the quantity of described tuning screw and described resonant rod 220.
Described first signal source 20 is arranged on described plate body 10.Described first signal end 20 is for Received signal strength.
Described load end 40 is arranged on described plate body 10.Described load end 40 will be for carrying out signal output.
Described first microstrip line 50 is layed on described plate body 10.Described first microstrip line 50 comprises connecting line 51 and coupling drum 52.Described connecting line 51 connects described first signal source 20, described load end 40 and described coupling drum 52.Described coupling drum 52 is formed in described through hole 11 around, and corresponding corresponding resonant rod 220, to form mini strip line resonator with described resonant rod 220.Wherein, described coupling drum 52 insulate with corresponding tuning screw 240.
Wherein, the quantity of described coupling drum 52 is identical with the quantity of described through hole 11, and is relations one to one with described through hole 11.Namely a coupling drum 52 surrounds a through hole 11.
It should be noted that, the surrounding that described coupling drum 52 is formed in described through hole 11 can be understood as described coupling drum 52 and surrounds described through hole 11, described through hole 11 can not surrounded, the corresponding corresponding resonant rod 220 of the drum 52 that is coupled described in a demand fulfillment yet.In addition, the corresponding corresponding resonant rod 220 of described coupling drum 52 is when described microstripline plate 100 is installed in described band stop filter 100, and the projection of end face on described microstripline plate 100 of described resonant rod 220 has crossing or overlapping with described coupling drum 52.
Described second microstrip line 60 is layed on described plate body 10.The first end 61 of described second microstrip line 60 connects described connecting line 51.Second end 62 of described second microstrip line 60 is in open-circuit condition, forms minor matters line resonator to make described second microstrip line 50.
Wherein, the first end 61 of described second microstrip line 60 and the second two ends of end 62 for being oppositely arranged.Second end 62 of described second microstrip line 60 is in open loop state and namely shows that the second end 62 of described second microstrip line 60 is in idle state.
In the present embodiment, described microstripline plate 100 comprises described first microstrip line 50 and the second microstrip line 60.Described first microstrip line 50 is layed on described plate body 10.Described first microstrip line 50 comprises connecting line 51 and coupling drum 52.Described connecting line 51 connects described first signal source 20, described load end 40 and described coupling drum 52.Described coupling drum 52 is formed in described through hole 11 around, and corresponding corresponding resonant rod 220, to form mini strip line resonator with described resonant rod 220.Wherein, described coupling drum 52 insulate with corresponding tuning screw 240.Described second microstrip line 60 is layed on described plate body 10.The first end of described second microstrip line 60 connects described connecting line 51.Second end of described second microstrip line 60 is in open-circuit condition, forms minor matters line resonator to make described second microstrip line 50.Therefore, when microstripline plate 100 of the present invention is applied to band stop filter 200, described band stop filter 200 has mini strip line resonator and minor matters line resonator, thus add the quantity of described band stop filter 200, namely improve the degree of coupling of described band stop filter 200, and then width is treated in the resistance adding described band stop filter 200.
In the present embodiment, described microstripline plate 100 only includes a signal source (the first signal source 20) and second microstrip line 52.
In other embodiments, described microstripline plate 100 can also comprise multiple signal source, as also comprised secondary signal source.Described secondary signal source is arranged on described plate body 10, for receiving input signal.Wherein, the frequency of the input signal of described first and second signal source termination receipts is different.Described secondary signal source is connected to described load end 40 by connecting line.Described load end 40 is for signal syntheses.Described microstripline plate 100 can also multiple second microstrip line 60.The first end of described second microstrip line 60 also can be connected on the connecting line between described secondary signal source and described load end 40.
Further, referring to Fig. 3, is the analogous diagram after emulating the band stop filter of the described microstripline plate 100 of application and the band stop filter of not applying described microstripline plate 100.The abscissa of described analogous diagram is frequency, and unit is MHz; Ordinate is signal amplitude, and unit is dB.Wherein, curve 301 is the curve after the band stop filter not applying described microstripline plate 100 emulates; Curve 302 is the curve after the band stop filter applying described microstripline plate 100 emulates.Therefore, from Fig. 3, enclosed by circle the part come can learn: the resistance band applying the band stop filter 200 of described microstripline plate 100 increases greatly.
Particularly, the described first end 61 of the second microstrip line 60 is 1/4th first wave length with the distance be coupled between drum 52 of arbitrary neighborhood.Wherein, described first wave length is the wavelength that the band connection frequency of signal that described first signal source 20 receives is corresponding.
The length of described second microstrip line 60 is 1/4th second wave lengths.Wherein, described second wave length is wavelength corresponding to the stop-band frequency of signal that the first signal source 20 receives.
In the present embodiment, the perisporium of described through hole 11 has spacing with the tuning screw 240 through described through hole 11.Described coupling drum 52 is formed in described through hole 11 around, and extends into the edge of described through hole 11.
It should be noted that, the perisporium of described through hole 11 and be prevent from being formed in described through hole 11 around when the described drum 52 that is coupled through the object that the tuning screw 240 of described through hole 11 has a spacing, and when extending into the edge of described through hole 11, described tuning screw 240 contacts with described coupling drum 52 phenomenon that is short-circuited.
In other examples, when the perisporium when described through hole 11 has spacing with the tuning screw 240 through described through hole 11, described coupling drum 52 can be formed in described through hole 11 around, and does not extend into the edge of described through hole 11.The perisporium of described through hole 11 also can contact with the tuning screw 240 through described through hole 11, and described coupling drum 52 is formed in described through hole 11 around, and must have spacing with the edge of described through hole 11.
Please continue to refer to Fig. 4, second aspect of the present invention embodiment provides a kind of band stop filter 400.Described band stop filter 400 comprises cavity 410, resonant rod 420, cover plate 430, tuning screw 440 and microstripline plate.Described resonant rod 420 is arranged in described cavity 410.Described cover plate 430 is fixed on described cavity 410, to form host cavity 460.Described resonant rod 420 is positioned at described collecting cavity 460.Described tuning screw 440 is arranged on described cover plate 430, and described tuning screw 440 runs through the corresponding described resonant rod 420 of described cover plate 410.
Wherein, the position of the structure of described microstripline plate, function and cavity 410, resonant rod 420, cover plate 430, tuning screw 440 and annexation are identical with the microstripline plate 100 provided for first aspect of the present invention embodiment, no longer repeat at this.
Further, described tuning screw 440 is arranged on described cover plate 430 rotationally, to adjust distance between the first end of described tuning screw 440 and described resonant rod 430 by rotating described tuning screw 440.
Refer to Fig. 5, further, being formed with support portion 411 near top place in described cavity 410, for supporting described micro-single line plate 100, thus described micro-single line plate 100 being arranged in described host cavity 460.
It should be noted that, described microstripline plate 100 is supported in described host cavity 460 mode that can adopt other as required, as fixed forms such as laminatings.
In the present embodiment, described cover plate 430 is installed on described cavity 410 and adopts sealed fixed form.Namely the top of described cavity 410 is formed with screw.The periphery of described cover plate 430 is provided with corresponding through hole, sealed through the screw that the through hole of described cover plate 430 is corresponding to described cavity 410 by screw, thus is installed on described cavity 410 by described cover plate 430.
Above disclosedly be only a kind of preferred embodiment of the present invention, certainly can not limit the interest field of the present invention with this, therefore according to the equivalent variations that the claims in the present invention are done, still belong to the scope that the present invention is contained.
Claims (10)
1. a microstripline plate, described microstripline plate is placed in band stop filter, and described microstripline plate comprises:
Plate body, described plate body offers the through hole of the tuning screw of corresponding described band stop filter, carrys out corresponding resonant rod in corresponding band stop filter to make described tuning screw through described through hole;
Signal source, described signal source is arranged on described plate body, for Received signal strength;
Load end, described load end is arranged on described plate body, exports for signal;
First microstrip line, described first microstrip line is layed on described plate body, described first microstrip line comprises connecting line and coupling drum, described connecting line connects described signal source, described load end and described coupling drum, described coupling line dish is formed in around described through hole, and corresponding corresponding resonant rod, to form mini strip line resonator with described resonant rod, wherein, described coupling drum and corresponding tuning screw insulate;
Second microstrip line, described second microstrip line is layed on described plate body, and the first end of described second microstrip line connects described connecting line, and the second end of described second microstrip line is in open-circuit condition, forms minor matters line resonator to make described second microstrip line.
2. microstripline plate according to claim 1, it is characterized in that: the first end of described second microstrip line is 1/4th first wave length with the adjacent distance be coupled between drum, wherein, described first wave length is the wavelength that the band connection frequency of signal that described signal source termination is received is corresponding.
3. microstripline plate according to claim 1 and 2, is characterized in that: the length of described second microstrip line is 1/4th second wave lengths, and wherein, described second wave length is wavelength corresponding to the stop-band frequency of signal that signal source termination is received.
4. microstripline plate according to claim 1, is characterized in that: the perisporium of described through hole has spacing with the tuning screw through described through hole.
5. microstripline plate according to claim 4, is characterized in that: described coupling line dish is formed in around described through hole, and extends into the edge of described through hole.
6. microstripline plate according to claim 1, is characterized in that: the perisporium of described through hole contacts with the tuning screw through described through hole, and described coupling line dish is formed in around described through hole, and has spacing with the edge of described through hole.
7. microstripline plate according to claim 1, it is characterized in that: the quantity of described through hole is identical with the tuning screw of described band stop filter and the quantity of resonant rod, the quantity of described coupling drum and the identical of described through hole, and described coupling drum and described through hole one_to_one corresponding.
8. a band stop filter, comprise cavity, resonant rod, cover plate, tuning screw and the microstripline plate as described in any one of claim 1-7, described resonant rod is arranged in described cavity; Described cover plate is fixed on described cavity, and to form host cavity, described resonant rod is positioned at described collecting cavity; Described tuning screw is arranged on described cover plate, and described tuning screw runs through the next corresponding described resonant rod of described cover plate.
9. according to the band stop filter described in claim 1, it is characterized in that: described tuning screw is arranged on described cover plate rotationally, to adjust distance between the first end of described tuning screw and described resonant rod by rotating described tuning screw.
10. band stop filter according to claim 1, is characterized in that: being formed with support portion near top place in described cavity, for supporting described micro-single line plate, thus being arranged in described host cavity by described micro-single line plate.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147331.2A CN104752797A (en) | 2015-03-31 | 2015-03-31 | Microband circuit board and band stop filter |
| CN201620261653.XU CN206271844U (en) | 2015-03-31 | 2016-03-31 | A kind of microstripline plate and bandstop filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510147331.2A CN104752797A (en) | 2015-03-31 | 2015-03-31 | Microband circuit board and band stop filter |
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| Publication Number | Publication Date |
|---|---|
| CN104752797A true CN104752797A (en) | 2015-07-01 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510147331.2A Pending CN104752797A (en) | 2015-03-31 | 2015-03-31 | Microband circuit board and band stop filter |
| CN201620261653.XU Active CN206271844U (en) | 2015-03-31 | 2016-03-31 | A kind of microstripline plate and bandstop filter |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620261653.XU Active CN206271844U (en) | 2015-03-31 | 2016-03-31 | A kind of microstripline plate and bandstop filter |
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| CN (2) | CN104752797A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244574A (en) * | 2015-08-18 | 2016-01-13 | 深圳三星通信技术研究有限公司 | Novel cavity filter |
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| 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 |
| CN111033884A (en) * | 2018-08-09 | 2020-04-17 | 深圳市大富科技股份有限公司 | Filter, duplexer and communication equipment |
| CN113782929A (en) * | 2021-07-26 | 2021-12-10 | 深圳市数创众泰科技有限公司 | Band-stop filter |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111816964B (en) * | 2020-06-29 | 2022-04-01 | 西南电子技术研究所（中国电子科技集团公司第十研究所） | Millimeter wave suspension strip line composite filter |
-
2015
- 2015-03-31 CN CN201510147331.2A patent/CN104752797A/en active Pending
-
2016
- 2016-03-31 CN CN201620261653.XU patent/CN206271844U/en active Active
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244574A (en) * | 2015-08-18 | 2016-01-13 | 深圳三星通信技术研究有限公司 | Novel cavity filter |
| CN105244574B (en) * | 2015-08-18 | 2018-03-09 | 深圳三星通信技术研究有限公司 | A kind of novel cavity wave filter |
| US10790565B2 (en) | 2015-08-18 | 2020-09-29 | Samsung Electronics Co., Ltd. | Cavity filter |
| 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 |
| CN107046157A (en) * | 2017-01-22 | 2017-08-15 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| WO2018133223A1 (en) * | 2017-01-22 | 2018-07-26 | 京信通信系统（中国）有限公司 | Suspended strip-line band-stop filter and communication cavity device thereof |
| CN107046157B (en) * | 2017-01-22 | 2019-09-06 | 京信通信系统（中国）有限公司 | Suspended stripline bandstop filter and its communication cavity device |
| CN111033884A (en) * | 2018-08-09 | 2020-04-17 | 深圳市大富科技股份有限公司 | Filter, duplexer and communication equipment |
| CN111033884B (en) * | 2018-08-09 | 2022-07-26 | 大富科技(安徽)股份有限公司 | Filter, duplexer and communication equipment |
| CN113782929A (en) * | 2021-07-26 | 2021-12-10 | 深圳市数创众泰科技有限公司 | Band-stop filter |
| CN113782929B (en) * | 2021-07-26 | 2022-08-05 | 深圳市数创众泰科技有限公司 | Band-stop filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN206271844U (en) | 2017-06-20 |
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