CN110416675A - High low pass combiner - Google Patents
High low pass combiner Download PDFInfo
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- CN110416675A CN110416675A CN201910707832.XA CN201910707832A CN110416675A CN 110416675 A CN110416675 A CN 110416675A CN 201910707832 A CN201910707832 A CN 201910707832A CN 110416675 A CN110416675 A CN 110416675A
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- low pass
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- 239000004020 conductor Substances 0.000 claims abstract description 159
- 238000001914 filtration Methods 0.000 claims abstract description 107
- 230000008878 coupling Effects 0.000 claims abstract description 16
- 238000010168 coupling process Methods 0.000 claims abstract description 16
- 238000005859 coupling reaction Methods 0.000 claims abstract description 16
- 238000005192 partition Methods 0.000 claims abstract description 8
- 239000002184 metal Substances 0.000 claims description 81
- 239000003990 capacitor Substances 0.000 claims description 20
- 230000000875 corresponding effect Effects 0.000 claims description 17
- 230000002596 correlated effect Effects 0.000 claims description 4
- 238000001727 in vivo Methods 0.000 claims 1
- 238000002955 isolation Methods 0.000 abstract description 8
- 230000008901 benefit Effects 0.000 abstract description 6
- 238000003780 insertion Methods 0.000 description 9
- 230000037431 insertion Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 238000010295 mobile communication Methods 0.000 description 4
- 238000010923 batch production Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
- H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
Abstract
The present invention provides a kind of high low pass combiner comprising cavity equipped with cavity and the cover board that dress is mutually covered with cavity, the both ends of the cavity are respectively equipped with connectivity port, the partition for cavity to be separated to form to high-pass filtering chamber and low-pass filtering chamber are equipped in cavity；The high-pass filtering is intracavitary to respectively correspond the conductor assembly being electrically connected with the connectivity port at cavity both ends equipped with both ends, and conductor assembly includes multiple conductors, and multiple conductors are arranged along cavity longitudinally and successively capacitive coupling connects；The strip line filtering access that the intracavitary connectivity port for respectively corresponding and outputting and inputting equipped with both ends of low-pass filtering is electrically connected；At least partly conductor extends towards cavity bottom wall and forms the supporting element fixed with wall.The high pass of high low pass combiner of the invention is integrated with strip line low pass path and coaxial line is of coupled connections conductor structure, can be applied to 5G high band, reaches the advantages that Q value is high, and power capacity is big, passband is wide, high-isolation.
Description
Technical field
The present invention relates to mobile communication field more particularly to a kind of high low pass combiners.
Background technique
The high low pass combiner of cavity body filter, cavity is widely used in modern communications field, basic function are as follows: allow useful
Signal passes through on signal link to greatest extent, and useless signal is curbed to the maximum extent, while high low pass combiner is also
Combiner can be carried out to different frequency range signal.With the rapid propulsion of 5G technology, in order to obtain bigger channel capacity, higher
Transmission rate, mobile communication system just develop towards higher frequency.It is coexisted to realize with existing system, it is desirable that high low pass combining
Device is able to satisfy broader bandwidth demand.In this way, just needing high performance height naturally during mobile communication system evolution
Logical combiner.
High low pass combiner in the prior art, implementation are mainly the combining between coaxial resonant cavity band logical access.
Its advantage is that Q value is high, power capacity is big, can increase pole by cross-linked mode, meet the requirement of strong Out-of-band rejection,
But the disadvantage is that existing path combining technique cannot achieve the bandwidth of 1.5GHz or more with the increase of bandwidth.Such high low pass is closed
Road device is unable to satisfy the wide requirement of high-isolation, high power, passband between mobile communication system, it is necessary to find preferably combining side
Case.
Summary of the invention
The purpose of the present invention is intended to provide a kind of high low pass combiner for being integrated with high pass path and low pass path, is adapted to
The development of 5G technology, and have many advantages, such as that Q value is high, power capacity is big, passband is wide, high-isolation.
To achieve the goals above, the present invention the following technical schemes are provided:
The present invention relates to a kind of high low pass combiners, and the cover board of dress is mutually covered including cavity and with cavity, is set in the cavity
There is the cavity of lengthwise open, and be respectively formed with the connectivity port for outputting and inputting in the both ends of the cavity longitudinally,
The partition for the cavity to be separated to form to high-pass filtering chamber and low-pass filtering chamber is equipped in the cavity, the partition is along institute
State the extension of cavity longitudinally；
The conductor that the intracavitary connectivity port for respectively corresponding and outputting and inputting equipped with both ends of the high-pass filtering is electrically connected
Component, the conductor assembly include multiple conductors, and the multiple conductor is arranged along the cavity longitudinally and successively capacitive coupling
Close connection；
The intracavitary connectivity port for respectively corresponding and outputting and inputting equipped with both ends of the low-pass filtering is electrically connected band-like
Line filters access；The bottom wall of at least partly described conductor towards the cavity extends and forms the support fixed with the cavity
Part.
Further setting: the supporting element includes metal support stick, and the metal support stick is opened far from one end of conductor
Cooperate equipped with being inserted into for the fastener across the cavity bottom wall with the peace for fixing the metal support stick and the cavity
Fill hole.
Further setting: the conductor includes the first conductor and the second conductor, and the supporting element is set on the first conductor, institute
The side for stating the first conductor back to second conductor offers connecting hole, and the connecting hole and the second conductor coaxial are arranged, phase
Capacitive coupling connection is realized in the socket that adjacent two conductors pass through the second conductor and connecting hole that are correspondingly arranged.
Further setting: the length that second conductor is inserted into the connecting hole of conductor adjacent thereto is set to and filters
The cutoff frequency of device is negatively correlated.
Further setting: being equipped with medium member between the two neighboring conductor, the medium member includes being inserted in described the
Medium socket between two conductors and the connecting hole and the end set on medium socket and the first conductor for separating adjacent conductor
Dieelctric sheet.
Further setting: the connectivity port includes public port, the first connectivity port and second connection end mouth, the public affairs
Altogether port be set to the cavity along the both ends of its longitudinally wherein one end and with the high-pass filtering chamber and low-pass filtering chamber
It is connected to, first connectivity port and second connection end mouth are set to the cavity with respect to the other end that public port is arranged, and
First connectivity port is connect with high-pass filtering chamber, and the second connection end mouth is connect with low-pass filtering chamber.
Further setting: the strip line filtering access includes the first sheet metal and the second sheet metal；
First sheet metal is located above the second sheet metal and the two has gap and forms capacitor, first metal
It piece and is fixed in the cavity with the second sheet metal by medium screw；
First sheet metal is connect with the second connection end mouth；
Second sheet metal is connect with the public port, and it includes along the centre of cavity longitudinally setting
Portion and extension positioned at middle part two sides have gap described to be formed between the adjacent extensions of middle part the same side
The groove of second sheet metal.
Further setting: the low-pass filtering is intracavitary be additionally provided be connected to second connection end mouth and strip line filtering access it
Between high Low ESR low pass filtering access.
Further setting: in the cavity close to public port side be additionally provided with filter capacitor and with the filter capacitor
Concatenated conducting wire, the filter capacitor by conducting wire respectively in the high-pass filtering chamber conductor assembly and the low-pass filtering
Intracavitary strip line filtering access connection.
Further setting: it is set in the cavity there are three trapper and is corresponded in public port, the first connectivity port
And the connection of second connection end mouth, the cover board are equipped with the connecting plate for being electrically connected with each other three trappers.
Compared with prior art, the solution of the invention has the following advantages:
1. high-pass filtering access, low-pass filtering chamber are arranged in high-pass filtering chamber in high low pass combiner of the invention
Middle setting low pass filtering access, so as to which high-pass filtering access and low pass filtering access are integrated in same cavity, so that this
The high low pass combiner of invention can realize coexisting for 5G technological system and existing system, while low pass filtering access uses high low-resistance
The combination of anti-low pass filtering access and strip line filtering access, high-pass filtering access are mutually socketed and using multiple conductors in medium
Series capacitance is formed under the isolation of part, while setting is used to support the supporting element of conductor between each conductor and cavity wall,
So that be placed in the structure in cavity more stable for conductor, and supporting element and conductor and cavity wall are to be electrically connected, then prop up
Support member may make up the shunt inductance of high-pass filter, to make the high-pass filter constitute Chebyshev's mode filter, so that high
The squareness factor of bandpass filter is small and closer to 1 so that filtering curve is more precipitous, with the signal outside to frequency range have compared with
High Out-of-band rejection effect, so that the combining pass band width of the high low pass combiner of the present invention is up to 3820MHz, insertion loss is small,
And isolation with higher, the demand of the high band development of 5G can be met.
2. in high low pass combiner of the invention, strip line filtering combining structure is simple, and high-pass filtering combining is using knot
The identical multiple conductors of structure are mutually socketed, and consistency is good, easy to produce and process, are suitable for batch production.
3. in high low pass combiner of the invention, by be arranged in cavity respectively with public port, the first connectivity port
And corresponding three trappers of second connection end mouth are suitable for antenna to be used for transmission the DC control signal for controlling antenna parameter
In, and the parameter of antenna can be adjusted.
The additional aspect of the present invention and advantage will be set forth in part in the description, these will become from the following description
Obviously, or practice through the invention is recognized.
Detailed description of the invention
Above-mentioned and/or additional aspect and advantage of the invention will become from the following description of the accompanying drawings of embodiments
Obviously and it is readily appreciated that, in which:
Fig. 1 is the structural schematic diagram of one embodiment of the high low pass combiner of the present invention；
Fig. 2 is the structural schematic diagram of high-pass filtering access in the high low pass combiner of the present invention；
Fig. 3 is the seperated figure of high-pass filtering access structure in high low pass combiner of the invention；
Fig. 4 is the front plan view of high low pass combiner one embodiment of the invention；
Fig. 5 is the sectional view of high-pass filtering access structure in the high low pass combiner of the present invention.
In figure, 11, cavity；111, high-pass filtering chamber；112, low-pass filtering chamber；12, cover board；13, partition；21, common end
Mouthful；22, the first connectivity port；23, second connection end mouth；3, high-pass filtering access；31, conductor；311, the first conductor；312,
Two conductors；313, connecting hole；32, medium member；321, medium socket；322, dieelctric sheet；33, supporting element；331, mounting hole；34,
A connection piece；341, the first pitman；342, the second pitman；35, the second connector；351, connector sleeve；352, third connects
Stick；4, low pass filtering access；41, high Low ESR low pass filtering access；411, high Low ESR low pass stub；412, annular medium
Set；42, strip line filters access；421, the first sheet metal；422, the second sheet metal；4221, middle part；4222, extension；
423, first medium piece；424, second medium piece；5, filter capacitor；51, conducting wire；52, dielectric pad；61, trapper；62, inductance；
7, tuning screw；1000, high low pass combiner.
Specific embodiment
The embodiment of the present invention is described below in detail, examples of the embodiments are shown in the accompanying drawings, wherein from beginning to end
Same or similar label indicates same or similar element or element with the same or similar functions.Below with reference to attached
The embodiment of figure description is exemplary, and for explaining only the invention, and is not construed as limiting the claims.
Referring to Figure 1 to Fig. 5, the present invention relates to a kind of high low pass combiners 1000, by high-pass filter and low pass filtered
Wave device is integrated in same cavity, it can be achieved that 5G technology and existing system coexist, while can take into account the performances such as Insertion Loss and volume
Index, that is, have the characteristics that small in size, light-weight, while it is wider to be able to achieve small Insertion Loss, high-isolation, high power and pass band width
Etc. superperformances, and its squareness factor is small, has good frequency selectivity, and structure is simple, easy to process and batch production.
Incorporated by reference to Fig. 1, cover board 12 of the high low pass combiner 1000 including cavity 11 and with 11 phase lid of cavity dress is described
Cover board 12 is metal cover board, and is fastened between the cover board 12 and the cavity 11 by screw with connecting, thus in the chamber
The inside of body 11 limits the cavity (not indicating in figure, similarly hereinafter) for signal transmission.Specifically, which is the closing of lengthwise open
Formula cavity.The company for outputting and inputting is respectively formed at the both ends that the cavity 11 is located at the cavity longitudinally simultaneously
Connect port.
Extend along its longitudinally in addition, being additionally provided in the cavity 11 and the cavity is separated to form high-pass filtering
The partition 13 of chamber 111 and low-pass filtering chamber 112, the interior high pass that the high low pass combiner 1000 is set of the high-pass filtering chamber 111
Access 3 is filtered, the low pass filtering access 4 of the high low pass combiner 1000, specifically, institute are set in the low-pass filtering chamber 112
Stating low pass filtering access 4 includes that strip line filters access 42.
The connectivity port includes the common end being electrically connected with the high-pass filtering access 3 and low pass filtering access 4
Mouth 21 is electrically connected with the first connectivity port 22 of the high-pass filtering access 3 electric connection and with the low pass filtering access 4
Second connection end mouth 23.Wherein, the public port 21 is set to the cavity 11 along one end of the cavity longitudinally, institute
It states the first connectivity port 22 and the second connection end mouth 23 is set to the cavity 11 one end opposite with the public port 21,
And the corresponding high-pass filtering chamber 111 in first connectivity port 22 is arranged, the corresponding low pass of the second connection end mouth 23
Chamber 112 is filtered to be arranged.
Incorporated by reference to Fig. 1 to Fig. 3, the high-pass filtering access 3 include both ends respectively correspond with the cavity for input and
The conductor assembly (not indicating in figure, similarly hereinafter) of the connectivity port connection of output, the conductor assembly includes multiple along the cavity
Longitudinally arrangement and the successively conductor 31 of capacitive coupling connection, multiple conductors 31 for being arranged successively simultaneously capacitive coupling connection can shape
At the series capacitance of the high-pass filtering access 3.Wherein, the bottom wall of at least part conductor 31 towards the cavity 11 prolongs
It stretches and is formed with the supporting element 33 fixed with the cavity 11, the supporting element 33 is used to support the conductor 31, described in improving
The structural stability of conductor 31, and the supporting element 33 is extended by the bottom wall of conductor 31 towards the cavity 11, so that
The supporting element 33 can constitute the shunt inductance of the high-pass filtering access 3 with the bottom wall of the cavity 11.
The pass band width of the high-pass filtering access 3 is up to 1400-4200MHz, and series capacitance and shunt inductance can
It constitutes Chebyshev type and filters access, so that the squareness factor of high-pass filtering access 3 is small and closer to 1, so that filtering
Characteristic curve is more precipitous, thus has good selectivity, and its insertion loss≤0.2dB.
Incorporated by reference to Fig. 2, Fig. 3 and Fig. 5, the conductor 31 includes the first conductor 311 interconnected and the second conductor 312,
It is substantially in it is step-like, such as the first conductor 311 cross-sectional area be greater than the second conductor 312 cross-sectional area.Described first leads
Body 311 offers connecting hole 313 far from one end of the second conductor 312, and second conductor 312 is towards far from first conductor
311 direction extends, and second conductor 312 and the connecting hole 313 are coaxially disposed, second conductor 312 it is straight
Diameter is less than the aperture of the connecting hole 313, so that the second conductor 312 of the conductor 31 can be inserted into the of conductor 31 adjacent thereto
The mutual socket of adjacent conductor 31 is realized in the connecting hole 313 of one conductor 311, and the diameter of second conductor 312 is small
In the aperture of the connecting hole 313, so that there are gaps between the second conductor 312 being correspondingly arranged and connecting hole 313 to realize
The capacitive coupling of two neighboring conductor 31 connects.
Preferably, the second conductor 312 in the present embodiment is cylindric, and the connecting hole 313 of corresponding setting is circular hole.
In other embodiments, second conductor 312 may also be configured to square column or hexagon column, and the correspondence of connecting hole 313 is set
It is set to square hole or hexagonal hole.
Incorporated by reference to Fig. 5, the supporting element 33 is connected between first conductor 311 and the bottom wall of the cavity 11, institute
Stating supporting element 33 is the metal support stick being fixedly connected with first conductor 311, the metal support stick and the cavity 11
Bottom wall connection may make up the shunt inductance 62 of the high-pass filtering access 3, the metal support stick is perpendicular to the cavity 11
Bottom wall setting, and the metal support stick offers mounting hole 331, the installation close to one end of the bottom wall of the cavity 11
Hole 331 and the metal support stick are coaxially disposed, so as to by through the bottom wall of the cavity 11 and inserting threaded fastener
Enter into the mounting hole 331 connection to realize the bottom wall of the metal support stick and the cavity 11, the metal support
Stick can play the role of to the support conductor 31, and the bottom wall of the metal support stick and the cavity 11 is fixed, also right
Conductor 31 plays the role of fixed limit.
Preferably, the mounting hole 331 is threaded hole, and screw or bolt can be used in threaded fastener.
In addition, being equipped with medium member 32 between the two neighboring conductor 31 to be separated to adjacent conductor 31, can avoid
The adjacent conductor 31 directly contacts and leads to short circuit.The medium member 32 include be inserted in second conductor 312 with it is described
Medium socket 321 between connecting hole 313, the outer diameter of the medium socket 321 is adapted with the aperture of the connecting hole 313, described
The internal diameter of medium socket 321 is adapted with the diameter of second conductor 312, i.e., is socketed the medium on described second conductor 312
Be inserted into the connecting hole 313 of adjacent first conductors 311 after set 321, and the internal diameter of the medium socket 321 and outer diameter decibel with
Second conductor 312 and connecting hole 313 are adapted, so that second conductor 312 is plugged in the first conductor 311 adjacent thereto
When stability with higher.
The medium member 32 further includes being set to the medium socket 321 close to first conductor 311 and second conductor
The dieelctric sheet 322 of 312 junctions one end, the extending radially outwardly along the medium socket 321 of dieelctric sheet 322, and make phase
Separated between first conductor 311 of adjacent conductor 31 by the dieelctric sheet 322.
The capacitive coupling that the alternative air of medium member 32 realizes adjacent conductor 31 is set between multiple conductors 31, is increased
Add the dielectric constant between conductor 31, is able to achieve bigger capacitive coupling and broader pass band width, advantageously reduces filter
Volume, while can also prevent from directly contacting between adjacent conductor 31 and leading to short circuit.
Further, first conductor 311 and the second conductor 312 are integrally formed, and structural stability is good, reduce solder joint,
Lead to falling off for solder joint to avoid generation vibration in use, facilitates production and processing, be conducive to mass production.
In addition, the insertion of the second conductor 312 is led with the length in the connecting hole 313 of its first conductor 311 with two
Capacitance between body 31 is positively correlated, i.e. the length of the be inserted into connecting hole 313 of second conductor 312 is bigger, and capacitance is bigger,
The size of capacitance is related with the cutoff frequency of filter simultaneously, and cutoff frequency is bigger, and capacitance is smaller, so as to according to filter
Wave device cutoff frequency is inserted into the length of the connecting hole 313 of the first conductor 311 adjacent thereto with determination second conductor 312,
The length that i.e. described second conductor 312 is inserted into the connecting hole 313 of conductor 31 adjacent thereto is set to the cut-off with filter
Frequency is negatively correlated.
Meanwhile the quantity of conductor 31 can also be adjusted according to the demand of filter Out-of-band rejection in the cavity, it is described
The number of conductor 31 is more, and the order of corresponding filter pass band is higher, and the Out-of-band rejection effect played outside to corresponding band is got over
It is good；But the number of the conductor 31 is more, will lead to the increase of insertion loss, therefore can be within the scope of certain insertion loss, can
The quantity of conductor 31 is set as much as possible, to improve Out-of-band rejection effect.
Incorporated by reference to Fig. 2 and Fig. 3, the connectivity port that the both ends of the conductor assembly respectively correspond for outputting and inputting is equipped with
The connector connected with corresponding connectivity port, and it is respectively defined as the first connector 34 and the second connector 35.
Specifically, one end of the conductor assembly is the first conductor 311, and the other end is the second conductor 312, and described first connects
Fitting 34 includes the integrally formed pitman (not indicating in figure, similarly hereinafter) of the first conductor 311 with conductor assembly end, and described
Two connectors 35 are provided by the second conductor 312 for being located at the conductor assembly end, and second conductor 312 and corresponding connection
Port connection.
Alternatively, in other embodiments, first connector 34 includes being inserted into the first of the conductor assembly end to lead
The first pitman 341 and connection first pitman 341 and the second of the connectivity port in the connecting hole 313 of body 311
Pitman 342, the size of first pitman 341 is equal in magnitude with second conductor 312, first pitman
341 and first connect for capacitive coupling between conductor 311；Second connector 35 includes being socketed on the conductor assembly end
The second conductor 312 on connector sleeve 351 and third pitman for connecting the connector sleeve 351 with the connectivity port
352, the internal diameter of the connector sleeve 351 is equal with the aperture of connecting hole 313 of first conductor 311, the connector sleeve 351 with
Second conductor 312 is capacitive coupling connection.
Further, between first pitman 341 and the first conductor 311 and connector sleeve 351 and the second conductor 312 it
Between settable medium member 32 so that the conductor 31 and connector separate.
By the way that the connector being socketed with it is arranged, it can be achieved that conductor assembly and the connectivity port at the both ends of conductor assembly
Capacitance connection, capacitance connection is easier to compared to the mode for being directly connected to the conductor at conductor assembly both ends and connectivity port
In adjusting, and coupling performance is more excellent.
Incorporated by reference to Fig. 1 and Fig. 4, the pass band width of the low pass filtering access 4 in the present embodiment is 380-960MHz comprising
Strip line filters access 42.The strip line filtering access 42 includes the first sheet metal 421 and the second sheet metal 422, wherein institute
It states the first sheet metal 421 to be electrically connected with the second connection end mouth 23, first sheet metal 421 is located at second sheet metal
422 top, first sheet metal 421 and the second sheet metal 422 are fixed on the low-pass filtering chamber 112 by medium screw
In.In addition, having gap to form capacitor between first sheet metal 421 and the second sheet metal 422, so as to completely cut off direct current
Signal transmits between the first sheet metal 421 and the second sheet metal 422.
Preferably, first sheet metal 421 is L-shaped structure, the high Low ESR low pass stub 411 and the L shape
One end of first sheet metal 421 connects, and medium screw can be separate with high Low ESR low pass through first sheet metal of L shape 421
The side of one end that stub 411 connects, medium screw can run through the both ends of the side, facilitate installation, structural stability is higher.
In addition, second sheet metal 422 includes the middle part 4221 extended along the cavity longitudinally and is set to
Between 4221 two sides of portion multiple extensions 4222, the extension 4222 positioned at 4221 two sides of middle part is symmetrical arranged two-by-two,
And be located at the same side adjacent extensions 4222 between have gap so that formed on the second sheet metal 422 it is fluted (in figure not
Mark, similarly hereinafter), and second sheet metal 422 is integrally formed, the middle part of the groove part of second sheet metal 422
High impedance line is formed, the extension 4222 forms low-impedance line, meets the low-pass filter circuit principle on basis, and then realize
Low pass behavior.
Further, it is inserted in the gap of first sheet metal 421 and the second sheet metal 422 for separating the two
First medium piece 423 is additionally provided with second medium piece 424, the first metal between second sheet metal 422 and the bottom wall of cavity 11
Piece 421, first medium piece 423, the second sheet metal 422 and second medium piece 424 are set gradually from top to bottom, and pass through medium
Screw is through four and is fixed in the cavity 11.
The first sheet metal 421, first medium piece 423, the second sheet metal 422 and second in the low-pass filtering chamber 112
Dieelctric sheet 424 can be formed the strip line in the low pass filtering access 4 filtering access 42, cutoff frequency 975MHz, and
It is connected between first sheet metal 421 and the second sheet metal 422 for capacitive coupling, so as to completely cut off the letter of the direct current in signal
Number.
In addition, the first medium piece 423 and second medium piece 424 play the role of supporting sheet metal, in addition in institute
Insertion first medium piece 423 between the first sheet metal 421 and the second sheet metal 422 is stated, alternative air realizes the first sheet metal
421 and second sheet metal 422 capacitive coupling, the dielectric increased between the first sheet metal 421 and the second sheet metal 422 is normal
Number, is able to achieve bigger capacitive coupling and broader pass band width, advantageously reduces the volume of filter, while can also prevent the
Touching occurs between one sheet metal 421 and the second sheet metal 422 and leads to short circuit.
Further, also high Low ESR can be set between the second connection end mouth and strip line filtering access 42
Low pass filtering access 41.The high Low ESR low pass filtering access 41 includes being electrically connected with 23 inner conductor 31 of second connection end mouth
The high Low ESR low pass stub 411 connect, one end of the high Low ESR low pass stub 411 are interior with second connection end mouth 23
Conductor connection, the other end is connect with first sheet metal 421, and the high Low ESR low pass stub 411 is by it
Outer cover is equipped with annular medium socket 412 to be installed in the port holes of the second connection end mouth 23, so that the high Low ESR
High Low ESR low pass filtering access 41 is formed between low pass stub 411, annular medium socket 412 and the side wall of cavity 11, section
Only frequency is up to 2GHz, so as to filter out the harmonic high frequency peak of 2.7GHz or more.
The cavity 11 at public port 21 be equipped with respectively with the high-pass filtering access 3 and low pass filtering access 4
The filter capacitor 5 of electric connection, the filter capacitor 5 is set at partition 13 and its bottom is equipped with dielectric pad 52 to play support
It acts on, conducting wire 51 is in series on the filter capacitor 5, the filter capacitor 5 is logical with the high-pass filtering respectively by conducting wire 51
The conductor 31 of conductor assembly end connects in road 3, and the other end is connect with the second sheet metal 422 in the low pass filtering access 4.
The filter capacitor 5 and the connection of conducting wire 51 can form series resonant circuit, pass through for low frequency signal and rise to high-frequency signal
To certain inhibiting effect.
Preferably, the high-pass filtering chamber 111 that the public port 21 corresponds to cavity 11 is arranged, the high-pass filtering access
3 conductor assembly is directly connect with the inner conductor 31 of the public port 21 by the second connector 35, and the low-pass filtering is logical
Second sheet metal 422 on road 4 is electrically connected by filter capacitor 5 and conducting wire 51 and the public port 21.Assuming that outer signal
When being entered in cavity 11 by the public port 21, high-frequency signal is directly transmitted in high-pass filtering chamber 111, and low frequency signal
It is entered in low-pass filtering chamber 112 and is transmitted after filter capacitor 5 by conducting wire 51, the filter capacitor 5 can be by high-frequency signal
Completely cut off with low frequency signal.
Further, when the high low pass combiner 1000 is connect with the other equipment in antenna, the high low pass combining
Device 1000, which is also acted as, to carry out point/is combined to the DC control signal of control antenna parameter.Specifically, it is equipped in the cavity 11
Three trappers 61, three trappers 61 correspond and the public port 21, the first connecting pin after distinguishing series inductance 62
Mouth 22 and second connection end mouth 23 connect, and cover board 12 is equipped with so that the connecting plate that three trappers 61 are electrically connected to each other
(not illustrating in figure, similarly hereinafter), when cover board 12 and the cavity 11 lid conjunction, three trappers 61 are electrically connected the biography to realize signal
It is defeated.
Wherein, the concatenated inductance 62 of 61 institute of trapper and the conductor group being correspondingly connected with first connectivity port 22
Conductor 31 of the part close to 22 end of the first connectivity port connects, and the corresponding trapper 61 connecting with second connection end mouth 23 is connected
Inductance 62 connect with the first sheet metal of L shape 421, the corresponding trapper 61 connect with public port 21 concatenated inductance 62 and
The connection of second sheet metal 422, three trappers 61 are connected to the transmission to realize DC control signal by connecting plate.Meanwhile institute
State filter capacitor 5 can be used as shunt capacitance for direct current signal, so that by the trap being connect with the public port 21
The DC control signal that device 61 is exported can realize DC control by the filter capacitor 5 to be transmitted at public port 21
The output of signal.
In addition, being additionally provided with multiple tuning screws 7 on the cover board 12, the cover board 12 corresponds to the tuning screw 7
Position be arranged tapped through hole so that the tuning screw 7 is threadedly coupled with the cover board 12, and multiple tuning screws 7
It is arranged corresponding to multiple conductors 31 and low pass sheet metal, and the tuning screw 7 is suspended in institute by the cover board 12
The top of conductor 31 and low pass sheet metal is stated, and the tuning screw 7 is kept to protect always with the conductor 31 and low pass sheet metal
Hold non-contact connection.It, can by adjusting the relative distance between the tuning screw 7 and the conductor 31 or low pass sheet metal
The adjusting to the resonance frequency of high-pass filtering access 3 or low pass filtering access 4 is realized, thus by 3 He of high-pass filtering access
The resonance frequency of low pass filtering access controls in corresponding passband frequency range.
High-pass filtering access 3 and low pass filtering access 4 are integrated in same cavity by high low pass combiner 1000 of the invention
In 11, so that high low pass combiner of the invention can realize coexisting for 5G technological system and existing system, low pass filtering access 4
Passband be 380-960MHz, the passband of high-pass filtering access 3 is up to 1400-4200MHz, and high-pass filtering of the invention is logical
Road 3 forms the structure of series capacitance using the mutually socket of multiple conductors 31, while by being used to support 31 structure of conductor and and chamber
The bottom wall of body 11 forms the support sheet metal of shunt inductance 62, so that high-pass filtering access 3 constitutes Chebyshev type and filters access,
Its filtering curve is precipitous, and squareness factor is approximately close to 1, up to 1.284 in specific l-G simulation test, so that the high pass is filtered
Wave access 3 has good selectivity corresponding band, so that its isolation >=50dB, while its insertion loss is small, specific≤
0.2dB。
To sum up, high low pass combiner 1000 of the invention can realize that combining pass band width reaches 3820MHz, and have compared with
High isolation can meet the needs of 5G develops to high band.And low pass filtering access 4 is logical using high Low ESR low-pass filtering
Road 41 and strip line filtering access 42 combine, and selectivity is good, and structure is simple, easy to produce and process, and the high pass is filtered
Using multiple mutually sockets of conductor 31 in wave access 3, structural integrity is good, is suitable for batch production.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. a kind of high low pass combiner mutually covers the cover board of dress including cavity and with cavity, the sky of lengthwise open is equipped in the cavity
Chamber, and it is respectively provided with the connectivity port output and input in the both ends of the cavity longitudinally, it is characterized in that: the chamber
It is equipped with the partition for the cavity to be separated to form to high-pass filtering chamber and low-pass filtering chamber in vivo, the partition is along the cavity
Longitudinally extends；
The conductor assembly that the intracavitary connectivity port for respectively corresponding and outputting and inputting equipped with both ends of the high-pass filtering is electrically connected,
The conductor assembly includes multiple conductors, and the multiple conductor is arranged along the cavity longitudinally and successively capacitive coupling connects
It connects；
The strip line filter that the intracavitary connectivity port for respectively corresponding and outputting and inputting equipped with both ends of the low-pass filtering is electrically connected
Wave access；
The bottom wall of at least partly described conductor towards the cavity extends and forms the supporting element fixed with the cavity.
2. high low pass combiner according to claim 1, it is characterized in that: the supporting element includes metal support stick, and institute
It states metal support stick and is offered far from one end of conductor and penetrated for the fastener across the cavity bottom wall for described in fixed
The mounting hole of metal support stick and the cavity.
3. high low pass combiner according to claim 1, it is characterized in that: the conductor includes that the first conductor and second are led
Body, the supporting element are set on the first conductor, and the side of first conductor back to second conductor offers connecting hole, institute
It states connecting hole and the second conductor coaxial is arranged, the two neighboring conductor passes through the set of the second conductor and connecting hole that are correspondingly arranged
It connects and realizes capacitive coupling connection.
4. high low pass combiner according to claim 3, it is characterized in that: second conductor is inserted into conductor adjacent thereto
Length in connecting hole is set to negatively correlated with the cutoff frequency of filter.
5. high low pass combiner according to claim 3, it is characterized in that: being equipped with medium between the two neighboring conductor
Part, the medium member include the medium socket being inserted between second conductor and the connecting hole and the end set on medium socket
And the dieelctric sheet of the first conductor for separating adjacent conductor.
6. high low pass combiner according to claim 1, it is characterized in that: the connectivity port includes public port, first
Connectivity port and second connection end mouth, the public port be set to the cavity along the both ends of its longitudinally wherein one end simultaneously
It is all connected with the high-pass filtering chamber and low-pass filtering chamber, first connectivity port and second connection end mouth are set to the cavity
The other end of opposite public port setting, and first connectivity port is connect with high-pass filtering chamber, the second connection end mouth
It is connect with low-pass filtering chamber.
7. high low pass combiner according to claim 6, it is characterized in that: strip line filtering access includes the first metal
Piece and the second sheet metal；
First sheet metal is located above the second sheet metal and the two has gap and forms capacitor, first sheet metal and
It is fixed in the cavity with the second sheet metal by medium screw；
First sheet metal is connect with the second connection end mouth；
Second sheet metal is connect with the public port, and it include along the cavity longitudinally setting middle part and
Extension positioned at middle part two sides has gap to form described second between the adjacent extensions of middle part the same side
The groove of sheet metal.
8. high low pass combiner according to claim 7, it is characterized in that: intracavitary be additionally provided with of the low-pass filtering is connected to
High Low ESR low pass filtering access between two connectivity ports and strip line filtering access.
9. high low pass combiner according to claim 6, it is characterized in that: in the cavity also close to the side of public port
Equipped with filter capacitor and with the concatenated conducting wire of the filter capacitor, the filter capacitor by conducting wire respectively with the high-pass filtering
The intracavitary strip line filtering access connection of conductor assembly and the low-pass filtering in chamber.
10. high low pass combiner according to claim 6, it is characterized in that: setting in the cavity, there are three trapper and one
One, which corresponds to public port, the first connectivity port and the connection of second connection end mouth, the cover board, is equipped with for making three traps
The connecting plate that device is electrically connected with each other.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113054369A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
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| CN104659453A (en) * | 2013-11-21 | 2015-05-27 | 罗森伯格（上海）通信技术有限公司 | Wideband line combiner |
| CN107394332A (en) * | 2017-08-10 | 2017-11-24 | 京信通信系统（中国）有限公司 | Common port coupling device and microwave cavity device |
| CN209183693U (en) * | 2018-12-18 | 2019-07-30 | 京信通信系统（中国）有限公司 | Radio frequency cavity devices |
| CN210092307U (en) * | 2019-08-01 | 2020-02-18 | 京信通信技术(广州)有限公司 | High-low pass combiner |
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- 2019-08-01 CN CN201910707832.XA patent/CN110416675B/en active Active
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| CN203300776U (en) * | 2013-05-06 | 2013-11-20 | 京信通信技术(广州)有限公司 | Communication cavity device and low-pass filtering path |
| CN104659453A (en) * | 2013-11-21 | 2015-05-27 | 罗森伯格（上海）通信技术有限公司 | Wideband line combiner |
| CN107394332A (en) * | 2017-08-10 | 2017-11-24 | 京信通信系统（中国）有限公司 | Common port coupling device and microwave cavity device |
| CN209183693U (en) * | 2018-12-18 | 2019-07-30 | 京信通信系统（中国）有限公司 | Radio frequency cavity devices |
| CN210092307U (en) * | 2019-08-01 | 2020-02-18 | 京信通信技术(广州)有限公司 | High-low pass combiner |
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| CN113054369A (en) * | 2019-12-27 | 2021-06-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
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| CN110416675B (en) | 2024-02-27 |
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