CN105359335B - With direct-coupling and alternate cross-linked dielectric waveguide filter - Google Patents
With direct-coupling and alternate cross-linked dielectric waveguide filter Download PDFInfo
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- CN105359335B CN105359335B CN201480031583.2A CN201480031583A CN105359335B CN 105359335 B CN105359335 B CN 105359335B CN 201480031583 A CN201480031583 A CN 201480031583A CN 105359335 B CN105359335 B CN 105359335B
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- 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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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- 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
- H01P1/207—Hollow waveguide filters
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
- H01P1/2088—Integrated in a substrate
Abstract
Dielectric waveguide filter is made up of the multiple monolithics being coupled with side by side relationship in one embodiment.In one embodiment, waveguide filter includes two end monolithics and two interior monolithics, and each monolithic defines two resonators.First and second RF signal inputs/output electrode is defined on two end monolithics.In one embodiment, direct RF signal transmission paths are partly interconnected by resonator, the resonator made on each monolithic on each monolithic RF signal transmissions bridge and between the resonator of adjacent monolithic and the combination of the RF signal transmission windows of the resonator that interconnects adjacent monolithic is defined.In one embodiment, replace or cross-couplings RF signal transmission path is defined by the external RF signals transmission line extended between adjacent monolithic.
Description
The cross reference of the application of related and CO-PENDING
This patent application is that its applying date and disclosed interests are continued and required in the part of following application：In 2011 12
The moon 3 was submitted to and entitled " Dielectric Waveguide Filter with Dire ct Coupling and
The U.S. Patent Application Serial Number 13/373,862 of Alternative Cross-Coupling " and carry on May 9th, 2011
Hand over and entitled " Dielectric Waveguide Filter with Structure and Method for
The U.S. Patent Application Serial Number 13/103,712 of Adjusting Bandwidth ".This patent application was also required that in 2013
The applying date of the U.S. Provisional Patent Application Serial No. 61/830,476 that June 3 submitted to and disclosed interests.These patent applications
It is hereby expressly incorporated into this detailed description herein, as in all references data by quoting.
Invention field
The present invention relates generally to dielectric waveguide filter, and relate more particularly to direct-coupling and alternate intersection coupling
The dielectric waveguide filter of conjunction.
Background of invention
The present invention relates to the Medium Wave Guide filtering of the type disclosed in the U.S. Patent number 5,926,079 of Heine et al.
Device, plurality of resonator are longitudinally spaced along the length of the monolithic of medium/ceramic material, and plurality of slit/cutting edge
Monolithic length is longitudinally spaced and multiple RF signal bridges of dielectric material for being defined between multiple resonators, multiple RF signals
Bridge provides the direct inductance/capacitance coupling between multiple resonators.
Can be increased by the merging of zero in the form of the extra resonance device being located at the one or both ends of waveguide filter
The attenuation characteristic of the waveguide filter of the type being added in disclosed in the U.S. Patent number 5,926,079 of Heine et al..But and volume
The shortcoming that the merging of external resonator is related is that it also increases the length of wave filter, and this is in some applications due to for example in consumption
Space on the motherboard of person limits and may not be desirable or possible.
Can also pass through direct such as the resonator disclosed in the U.S. Patent number 7,714,680 of such as Vangala et al.
Increase the attenuation characteristic of wave filter with cross-couplings, 7,714,680 disclose with partly by corresponding metallization pattern
The inductance direct-coupling of the resonator of establishment and the cross-linked monoblock filter of four-tuple, metallization pattern are defined at filtering
Extend to provide the direct and intersection disclosed in resonator on the top surface of device and between the selected through hole of resonator through-holes
Coupling.
Type disclosed in the U.S. Patent number 7,714,680 of Vangala et al. and by top surface metal pattern
The direct and cross-couplings of composition are only including slit without the United States Patent (USP) in Heine et al. of top surface metal pattern
It is not applicable in the waveguide filter of the type disclosed in numbers 5,926,079.
The present invention is it is therefore intended that the filtering of the Medium Wave Guide with direct and optics or alternate cross-couplings resonator
Device, the resonator allow the increase of the attenuation characteristic of waveguide filter without the increase of the length of waveguide filter.
Summary of the invention
Present invention aim at waveguide filter, which includes：A pair of end blocks, each end block define at least one pair of resonator and
RF signal transmission input/output transmission electrodes；One or more internal RF signal transmission blocks, each internal RF signal transmission block circle
Fixed at least one pair of resonator is simultaneously located at this between end block；At least one RF signal transmission bridges, which is defined at this to resonator
Between end block and internal block in each on and make this to resonator interconnect；And multiple internal RF signal transmission windows, its
Be defined between each of end block and internal block, RF signal inputs/output electrode, multiple resonators, RF signal transmissions bridge and
The combination of RF signal transmission windows is defined together for the directapath by waveguide filter transmission RF signals.
In one embodiment, end block and internal block include the single dielectric material being coupled with side by side relationship
Block.
In one embodiment, the outer surface of end block and internal block is coated with layer of conductive material, multiple internal RF letters
Number transmission window is fixed by the regional boundary of the outer surface of the end block and internal block for not having conductive material.
In one embodiment, multiple internal RF signal transmission windows between end block and internal block are defined and determine
Position.
In one embodiment, external RF signals transmission line exists for offer to extending between end block and internal block at this
Internal block and this to the cross-couplings RF signal transmission path between end block.
In one embodiment, each in end block and internal block define with RF signal transmissions bridge in collinear relationship extremely
A few slit.
In one embodiment, multiple RF signal transmissions windows with alternately and false relation be located at end block and internal block it
Between, wherein RF signals are transmitted through the waveguide filter in serpentine pattern.
The object of the invention also resides in dielectric waveguide filter, and which includes：Define along at least the first and second normal axis with
The block of dielectric material of multiple resonators of side by side relationship arrangement；The first and second RF signals being defined in block of dielectric material are defeated
Enter/output electrode；The first direct RF signal paths transmission path between the first and second RF signal inputs/output electrode,
First direct RF signal transmission paths are upwardly extended in the side of the first and second axles；And the first and second RF signal inputs/
The first indirect RF signal paths transmission path between output electrode, the first indirect RF signal transmission paths are in the direction of the second axle
Upper extension.
In one embodiment, block of dielectric material defines multiple internal RF signal transmission windows, multiple internal RF signals
Transmission window defines at least a portion of direct RF signal transmission paths.
In one embodiment, multiple internal FR signal transmissions windows on the opposite side of the longitudinal axis of waveguide filter with
Alternate relation is arranged to define the first generally snakelike direct RF signal transmission paths.
In one embodiment, external transmission lines and block of dielectric material define the first indirect RF signal transmission paths.
In one embodiment, block of dielectric material is by the multiple independent block of dielectric material being coupled with side by side relationship
Composition, and the first and second normal axis include x and y-axis.
Further object of the present invention is dielectric waveguide filter, and which includes：Define first, second, third and fourth many
The first, second, third and fourth block of dielectric material of individual resonator, first, second, third and fourth block of dielectric material is with adjacent
Side by side relationship be coupled；It is defined in the inside of first, second, third and fourth block of dielectric material for RF is believed
First, second, and third direct-coupling RF signal transmission windows of the 4th block of dielectric material number are transferred to from first medium material block
Mouthful；And first and second external transmission lines, which is respectively in the first and second block of dielectric material and the third and fourth dielectric material
Extend between block for providing first and the 4th indirect cross coupling between block of dielectric material.
In one embodiment, first and the 4th block of dielectric material each define RF signal inputs/output electrode, RF letters
Number transmission window is in generally snakelike pattern for RF signals are transferred to the 4th dielectric material from first medium material block
The mode of block is arranged.
In one embodiment, each RF signal inputs/output electrode is by through first and the 4th in block of dielectric material
Each through hole for extending define and further include with for aliging with the collinear relationship of the longitudinal axis of waveguide filter each other
First, in second, third and the 4th block of dielectric material first, second, third and fourth slit simultaneously separates corresponding first,
2nd, more than third and fourth resonator.
In detailed description from below embodiment of the present invention, accompanying drawing and claims, other of the invention are excellent
Point and feature will become easier to substantially.
Brief description
These and other features of the invention can be best understood by by describing below drawings described below：
Fig. 1 is the perspective view of dielectric waveguide filter of the invention；
Fig. 2 is the partial cut away perspective view of the dielectric waveguide filter shown in Fig. 1；
Fig. 3 is the partial cross decomposition diagram of the dielectric waveguide filter shown in Fig. 1 and 2；
Fig. 4 is the perspective view of the another embodiment of dielectric waveguide filter of the invention；
Fig. 5 is the partial cut away perspective view of the dielectric waveguide filter shown in Fig. 4；
Fig. 6 is the partial cross decomposition diagram of the dielectric waveguide filter shown in Figure 4 and 5；
Fig. 7 is the side view of one of the end block of dielectric waveguide filter shown in Figure 4 and 5；And
Fig. 8 is the curve chart of the performance/frequency response for representing the ceramic dielectric waveguide filter described in figures 1-7.
The detailed description of embodiment
An embodiment of the RF signal wave-guides wave filter 100 of embodiment of the invention is described in Fig. 1,2 and 3,
RF signal wave-guides wave filter 100 is to merge direct RF signals coupling and transmission feature and characteristic and friendship in the illustrated embodiment
The cross-couplings replaced/indirect RF signals coupling and 8 poles or the resonator filter of transmission feature and characteristic, are begged for as discussed
By.
Waveguide filter 100 in the embodiment of Fig. 1,2 and 3 by four single generally parallelepiped-shapeds monolithic
Or the block 101,103,105 and 107 for being coupled with side by side relationship and being fixed together is made.
Each in monolithic or block 101,103,105 and 107 is made up of appropriate dielectric material such as ceramics, defines the longitudinal axis
L1(Fig. 1), it is included in and longitudinal axis L1The relative and spaced apart vertical equity outer surface 102 of longitudinal extension on identical direction；
With longitudinal axis L1On identical direction longitudinal extension and more particularly with longitudinal axis L1Separate with the relation on parallel opposite side
Longitudinal direction side tapered outer surface 106 that is relative and being spaced apart；And with longitudinal axis L1Generally vertical and intersecting side is upwardly extending
Cross side vertical external end surfaces 110 that are relative and being spaced apart.
In the illustrated embodiment, all monolithics have identical width and height；And two end monolithics 101 and 107 have
There is the equal length bigger than the length of with equal length two inside or middle monolithic 103 and 105.
Monolithic 101,103,105 and 107 includes corresponding multiple resonance sections (also referred to as chamber or cell or resonator)
114 and 116,118 and 120,121 and 122 and 123 and 125, which is spaced and along corresponding monolithic 101,103,105 and 107
Length and longitudinal axis L1Longitudinal extension and 124 (monolithic 101 of the vertical slits by being all cut in corresponding monolithic or slit
With 107) and vertical slits or slit 126 (monolithic 103 and 105) it is separated from one another.RF signal transmissions bridge 128 is (in 101 He of monolithic
On 107) and RF signal transmissions bridge 130 (on monolithic 105 and 107) make the interconnection of corresponding resonator, as discussed more below
's.
Upper and lower horizontal outer surface 102 through one of longitudinally perpendicular outer surface 106 and corresponding monolithic 101 and 107 cuts
Each slit 124.Each slit 124 with longitudinally perpendicular outer surface 106 and longitudinal axis L1Vertical and intersecting relation extends, and
The point separated without relative longitudinally perpendicular outer surface 106 and to relative longitudinally perpendicular outer surface 106 is in corresponding monolithic 101
With termination in 107 main body or cut-off.
Upper and lower horizontal outer surface 102 through one of longitudinally perpendicular outer surface 106 and corresponding monolithic 103 and 105 cuts
Each slit 130.Each slit 130 with longitudinally perpendicular outer surface 106 and longitudinal axis L1Vertical and intersecting relation extends, and
The point separated without relative longitudinally perpendicular outer surface 106 and to relative longitudinally perpendicular outer surface 106 is in corresponding monolithic 103
With termination in 105 main body or cut-off.
Each slit 124 and 126 and corresponding RF signal transmission bridge 128 respectively in monolithic 101 and 107 and 103 and 105
It is conllinear with 130.Each RF signal bridge 128 and 130 makes resonator on each corresponding monolithic to interconnection, and each freedom is at each
In vertical direction between the top and bottom horizontal surface 102 of monolithic 101,103,105 and 107 and in corresponding tapered outer surface 106
And the Qiao Huo islands composition of the dielectric material extended in the horizontal direction between respective slots 124 and 126 end.In shown enforcement
In scheme, respective slots 124 and 126 and corresponding RF signal bridge 128 and 130 are being typically normal to corresponding monolithic 101,103,105
With 107 longitudinal axis L1Relation and in longitudinal axis L1Opposite side on be directed.
Specifically, the dielectric material of resonator 114 is bridged and is interconnected to by the RF signal transmissions bridge 128 on monolithic 101
The dielectric material of resonator 116；RF signal transmissions bridge 130 on monolithic 103 is by the dielectric material bridge joint of resonator 118 and mutually
It is connected to the dielectric material of resonator 120；The dielectric material of resonator 121 is bridged by the RF signal transmissions bridge 130 on monolithic 105
With the dielectric material for being interconnected to resonator 122；And the RF signal transmissions bridge 128 on monolithic 107 is by the medium of resonator 123
Material bridges and is interconnected to the dielectric material of resonator 125.
In the illustrated embodiment, slit 126 and corresponding conllinear RF signal bridges 130 are usually located at 103 He of corresponding monolithic
105 center, and the length of each slit 124 and 126 is less times greater than the big of the width of corresponding monolithic 101,103,105 and 107
About half, and therefore each corresponding conllinear RF signal transmissions bridge 128 and 130 width be slightly less than each monolithic 101,103,
The half of 105 and 107 width.
According to application and expected performance characteristics, width, length and the height of slit 124 and 126 can be changed to change for example
The width of corresponding RF signal bridges 128 and 130.
Monolithic 101 and 107 in addition each include the electric RF signal inputs/output electrode of the form in corresponding through hole 146,
Through hole 146 through with its longitudinal axis L1The main body of the corresponding monolithic 101 and 107 on vertical and conllinear direction and more particularly wear
Cross the respective end resonator 114 and 123 defined in corresponding monolithic 101 and 107 main body and with monolithic 101 corresponding to each and
107 horizontal vertical end surfaces 110 are adjacent, separate and parallel relation extends.In the illustrated embodiment, each monolithic 101
Only include a through hole 146, and a RF signal inputs/output electrode being only defined in each monolithic 101 and 107 with 107.
Still more particularly, corresponding RF signal inputs/output through hole 146 is being typically normal to upper and lower vertical equity outer surface 102
With longitudinal axis L2Direction and relation and more particularly being defined in the upper and lower vertical equity outer surface of corresponding monolithic 101 and 107
The relation of the corresponding generally rounded opening for positioning in 102 and terminating extends through the main body of corresponding monolithic 101 and 107.
The outer surface 102,106 and 110 of monolithic 101,103,105 and 107, the inner surface of respective slots 124 and 126 and defeated
Enter/export the whole in the inner surface of through hole 146 and be coated with appropriate conductive material, for example silver.
Although being not shown in any drawing figure, it should be appreciated that SMA FR signal inputs/output coaxial connector can be coupled to
Respective through hole 146 in monolithic 101 and 107 simultaneously extends through the through hole 146.
As shown in fig 1 and 2, single monolithic 101,103,105 and 107 is as described in more detail below with adjacent
Side by side relationship it is coupled to each other and fixed defining and be formed waveguide filter 100.
In the illustrated embodiment, monolithic 101 and 103 defines the relative of waveguide filter 100 and the external RF being spaced apart
Signal input/output transmission block, and monolithic 105 and 107 is clipped in and is located between two end blocks 101 and 103 and define waveguide filter
Two internal RF signal transmission blocks of ripple device 100.
Especially and as illustrated in fig. 1 and 2, monolithic 101,103,105 and 107 is coupled and is fixed on the side by side relationship for adjoining
Together, wherein the longitudinally perpendicular surface 106 of corresponding monolithic 101,103,105 and 107 is against adjacent to each other；In two interior monolithics
Slit 126 on 103 and 105 is alignd co-linear with one anotherly in be typically normal to the longitudinal axis L of monolithic 103 and 1051And filter with waveguide
The longitudinal axis L of ripple device 1002Conllinear relation define and formed be defined and the inside in the center of waveguide filter 100 or
Interior elongated slot 135；And the slit 124 in corresponding monolithic 101 and 107 with slit 126 and 135 and and waveguide filter
100 longitudinal axis L2Conllinear relation arrangement.
Therefore, in relation as illustrated in fig. 1 and 2, resonator 114 on corresponding monolithic 101,103,105 and 107,
118th, 121 and 123 define with side by side relationship arrangement and along x-axis and in the longitudinal axis L with waveguide filter 1002Identical direction
Above and in the longitudinal axis L of waveguide filter 1002Side on the first row resonator that extends；In 101,103,105 and of corresponding monolithic
Resonator 116,120,122 and 125 on 107 define with side by side relationship arrange and along x-axis and with waveguide filter 100
Longitudinal axis L2On identical direction and in the longitudinal axis L of waveguide filter 1002Opposite side on the second row resonator for extending；And phase
The resonator 114 of reply and 116,118 and 120,121 and 122 and 123 and 128 define arranged with side by side relationship and along Y-axis and
Crossing longitudinal axis L2The upwardly extending respective column in side resonator.Therefore, in the illustrated embodiment, block 101,103,105
It is arranged and prolongs along orthogonal X-Y axles and direction and on orthogonal X-Y axles and direction with 107 and its corresponding resonator
Stretch.
Waveguide filter 100 is also included for directly leading to from the corresponding RF signal inputs/output for defining RF signal inputs
One of hole 146, through the corresponding resonator 114 on corresponding monolithic 101,103,105 and 107,116,120,118,121,
122nd, 125 and 123 and be subsequently passed through in corresponding RF signal inputs/output through hole 146 another transmission RF signals first
Direct-coupling RF signal transmitting apparatus.
In the embodiment of Fig. 1 and 2, direct-coupling RF signal transmitting apparatus include being defined at corresponding monolithic 101,
103rd, the corresponding inside on the corresponding longitudinally perpendicular outer surface in 105 and 107 longitudinally perpendicular outer surface 106 or interior RF signals
Transmission window or area or hole 622 (Fig. 2 and 3), which is in alignment with each other and against adjacent to each other, when 101,103,105 and 107 coupling of monolithic
Being combined is used for resonator of the RF signals from monolithic 101 to define direct-coupling RF signal transmitting apparatus and directapath
116 in the resonator 120 in monolithic 103, the resonator 118 from monolithic 103 is to the resonator 121 in monolithic 105
When interior and resonator 122 from monolithic 105 is to transmission in the resonator 125 in monolithic 107.
According to embodiment of the present invention as illustrated in fig. 1 and 2, internal or interior RF signal transmissions window 622 is included in not
Have conductive material each corresponding monolithic 101,103,105 and 107 longitudinally perpendicular outer surface 106 in it is corresponding longitudinally perpendicular outer
Generally rectangular area on surface, the i.e. area of medium ceramic material.
Therefore and in view of above description, it should be appreciated that each block 101,103,105 and 107 includes and define slit, RF letters
Respective slots, RF signal transmissions bridge and RF signal transmission windows in number transmission bridge and RF signal transmission windows, it is such as following more detailed
Thin description.
That is, each end RF signal inputs/output transmission block 101 and 103 is included from its longitudinally perpendicular outer surface 106
One of extend to a slit 124 in its main body；A RF signal transmission bridge 128 conllinear with a slit 124；Positioned at simultaneously
It is defined at the longitudinally perpendicular outer surface 106 relative with having the longitudinally perpendicular outer surface 106 for being defined in slit therein 124
A RF signal transmissions window 622 in another；And wherein RF signal transmissions window 622 and RF signal inputs/output are logical
Hole 146 is located at the opposite end of relevant block 101 and 103 and on the opposite side of slit 124 and RF signal transmissions bridge 128.
Each internal RF signal transmission block 103 and 105 includes extending to its main body from one of its longitudinally perpendicular outer surface 106
An interior slit 126；A RF signal transmission bridge 130 conllinear with a slit 126；And be defined at relative with each
Longitudinally perpendicular outer surface 106 on and be located at relevant block 103 and 105 opposite end at and in slit 126 and RF signal transmission bridges
The RF signal transmissions window 622 separated on 130 opposite side and with slit 126 and RF signal transmissions bridge 130.
It is to be further understood that in the embodiment of Fig. 1,2 and 3, each end block 101 and 107 and each 103 He of internal block
105 is identical in structure, and more particularly, in the embodiment of Fig. 1,2 and 3, block 107 is from left to right to overturn 180
The block 101 of degree, and block 105 is the block 103 for from left to right overturning 180 degree in addition.
Still further understand, in the embodiment of shown in the accompanying drawings waveguide filter 100, internal or interior RF signals
Transmission window 622 is with the longitudinal axis L of waveguide filter 1002Opposite side on and longitudinal axis L with waveguide filter 1002Between separating
Separate and replace or false relation along waveguide filter 100 longitudinal axis L2Arrange and extend to define through waveguide filter
100 usual snakelike or sine-shaped direct-coupling RF signal transmission paths.
Waveguide filter 100 in addition including first and second indirectly, alternately or cross-couplings RF signal transmitting apparatus, its
Form in outside cross-couplings/INDIRECT COUPLING in shown embodiment, alternately bypass or RF signal transmissions electrode or bridge component
Or transmission line 500 and 501 has specific impedance and phase place the corresponding resonator 114 and 118 and phase in corresponding monolithic 101 and 103
Extend between the corresponding resonator 121 and 123 for answering monolithic 105 and 107 and interconnect and electric coupling and corresponding 101 He of monolithic of interconnection
103 corresponding resonator 114 and 118, and the corresponding resonator 121 and 123 of corresponding monolithic 105 and 107.
In the illustrated embodiment, each outside cross-couplings transmission line 500 and 501 includes generally rectangular substrate or print
Printed circuit board is simultaneously defined by generally rectangular substrate or printed circuit board (PCB), and the substrate or printed circuit board (PCB) are sealed in corresponding monolithic
101 and 103 respective top vertical equity outer surface 102 and the respective top vertical equity outer surface 102 of corresponding monolithic 105 and 107
The respective top for going up and bridging the respective top vertical equity outer surface 102 and corresponding monolithic 105 and 107 of corresponding monolithic 101 and 103 is indulged
To horizontal outer surface 102.Each outside cross-couplings transmission line 500 and 501 is included in boundary in the inside of printed circuit board (PCB) in addition
The elongate strip or line of the conductive material 504 (Fig. 2) of fixed and formation, its corresponding resonator of bridge joint on corresponding monolithic 101 and 103
114 and 118 and the corresponding resonator 121 and 123 on corresponding monolithic 105 and 107 phase on corresponding monolithic 101 and 103
Answer and extend and be adapted on the corresponding resonator 121 and 123 on resonator 114 and 118 and on corresponding monolithic 105 and 107
In the outer layer of the conductive material being electrically connected on the outer surface 102 of corresponding monolithic 101,103,105 and 107.
Therefore, during assembling or the waveguide filter 100 for completing as shown in the embodiment of Fig. 1 and 2 includes defining
Heart longitudinal axis L2Block of dielectric material；Defined by the top and bottom vertical equity outer surface 102 of corresponding monolithic 101,103,105 and 107
And with longitudinal axis L2The a pair top and bottom vertical equity outer surfaces 102 that are relative and being spaced apart extended on identical longitudinal direction；
Defined by the horizontal tapered outer surface 110 of corresponding monolithic 101,103,105 and 107 and with longitudinal axis L2On identical longitudinal direction
And with longitudinal axis L2Separate and in longitudinal axis L2Opposite side on extend a pair top and bottom vertical equity outer surfaces that are relative and being spaced apart
102；And defined by the longitudinally perpendicular outer end surface 106 of the longitudinally perpendicular outer end surface 106 and monolithic 107 of monolithic 101
And crossing longitudinal axis L2And with longitudinal axis L2The upwardly extending a pair cross side vertical external end tables that are relative and being spaced apart in intersecting side
Face 106.
The waveguide filter 100 for completing still further includes this to RF signal inputs/output or electrode, its partly by
It is being typically normal to longitudinal axis L2Relation and side be upward through that the main body and dielectric material of block extend this to RF signal inputs/defeated
Go out through hole 146 to define and terminate in the respective openings in top and bottom outer block surface 102 respectively.
In the embodiment of Fig. 1 and 2, this is to first in through hole 146 positioned at longitudinal axis L2Under and with longitudinal axis L2Every
Be positioned and define in the inferior horn of the block of dielectric material opened, and this to second in through hole 146 in longitudinal axis L2Under and with it is vertical
Axle L2It is positioned in the just relative inferior horn of the block of dielectric material for separating and defines and is common to first in through hole 146 with this
Line.
Waveguide filter 100 still further include and define defined by slit 124 this to elongated slot 124, slit
124 form and with the longitudinal axis L generally with waveguide filter 100 in corresponding monolithic 101 and 1072Conllinear and intersecting relation from
The horizontal vertical surface of corresponding opposite outer 106 is extended in the main body and dielectric material of block of dielectric material.Slit 124 top and
Between bottom vertical equity outer surface 102 and the respective transversal end surfaces 106 of waveguide filter 100 and pass through top and bottom vertical equity
The respective transversal end surfaces 106 of outer surface 102 and waveguide filter 100 extend.
Waveguide filter 100 still further include and define defined by the slit 126 in monolithic 103 and 105 and with
With longitudinal axis L2Internal slot 135 of the generally conllinear relation through the main body and dielectric material of block.
The slit 124 and 135 defined in the block of waveguide filter 100 is all in relative to each other conllinear and spaced apart pass
It is and relative to longitudinal axis L2Conllinear relation is placed.
In the embodiment of Fig. 1 and 2, cross-couplings RF signal transmssion line 500 and 501 be all located at slit 124 and 135 and
Longitudinal axis L2Under, and slit 124 and 135 and longitudinal axis L2Separate and parallel.
In the embodiment of Fig. 1 and 2, outer surface 102,106 and 110, the inner surface of each slit 124 and 135 and every
Whole in the inner surface of individual RF signal inputs/output through hole 146 is coated with layer of conductive material.
Additionally, in the embodiment of Fig. 1 and 2, multiple internal layers or wall 700 of conductive material are with interval relative to each other
Open with parallel relation and with generally transverse to longitudinal axis L2And with longitudinal axis L2Master of the intersecting relation through the block of waveguide filter 100
The full duration of body and high perpendicular ground extend.Especially, the layer of conductive material or wall 700 are located in monolithic 101 and 103, in list
Between block 103 and 105 and between monolithic 105 and 107.In the illustrated embodiment, when 101,103,105 and 107 coupling of monolithic
When being combined, this layer of conductive material on the longitudinally perpendicular outer surface 106 of each monolithic 101,103,105 and 107 is defined
Each internal layer 700 of conductive material in waveguide filter 100.
According to the present invention, waveguide filter 100 is defined and continues to pass through RF signal transmissions input through hole 146,114 and of resonator
Resonator 114 more particularly in monolithic 101 and enter waveguide filter 100 resonator 116 and more particularly via with
Through resonator 114 and 116 and interconnect resonator 114 and 116 and with generally with longitudinal axis L2What conllinear relation extended
First magnetic of the RF signal that generally in fig. 2 by arrow d represented of the RF signal bridges 128 in the resonator 116 in monolithic 101
Or the usual snakelike or sine-shaped direct-coupling RF signal transmission paths of inductance.
Thereafter, RF signals are transferred in the resonator 120 of waveguide filter 100 from resonator 116, and more particularly via
The resonator 120 of monolithic 103 is transferred to by the direct-coupling RF signal transmitting apparatus that internal RF signal transmission window 622 is defined
Interior, internal RF signal transmission window 622 is defined between resonator 116 and 120 and interconnects the waveguide of resonator 116 and 120
In the inside of wave filter 100；And be subsequently passed through waveguide filter 100 resonator 118 and more particularly via and through
Between resonator 120 and 118 and interconnect resonator 120 and 118 and with generally with longitudinal axis L2The RF signals that conllinear relation extends
Bridge 130 is through the resonator 118 in monolithic 103.
Thereafter, RF signals via the direct-coupling RF signal transmitting apparatus defined by internal RF signal transmission window 622 from
Resonator 118 is transferred in the resonator 121 of waveguide filter 100, and internal RF signal transmission window 622 is defined at resonator
In the inside of the waveguide filter 100 between 118 and 121；And subsequently enter in the resonator 122 of waveguide filter 100 and more
Especially via and through between resonator 121 and 122 and interconnect resonator 121 and 122 and with generally with longitudinal axis L2Collinearly
Relation extend RF signal bridges 130 enter monolithic 103 in resonator 122 in.
Thereafter, RF signals are transferred in the resonator 125 of waveguide filter 100 from resonator 122, and more particularly via
Transmitted by the direct-coupling RF signal transmitting apparatus that the internal RF signal transmission window 622 between resonator 122 and 125 is defined
To in the resonator 122 of waveguide filter 100, and subsequently enter in the resonator 123 of waveguide filter 100 and more particularly Jing
By and by between resonator 125 and 123 and interconnect resonator 125 and 123 and with generally with longitudinal axis L2Conllinear relation is prolonged
In the resonator 123 that the RF signal bridges 128 stretched are entered in monolithic 107.
Thereafter, RF signals are through defining and more particularly in the resonator 123 of monolithic 107 in waveguide filter 100
The RF signal transmissions output through hole 146 for defining.
This embodiment of the invention, waveguide filter 100 are also defined and are provided in fig. 2 generally by arrow c
The alternating of the RF signals of expression or indirect or cross-couplings RF signal transmission path.
One of cross-couplings or indirect electric field/electric capacity RF signal transmission path c are defined simultaneously by external RF signals transmission line 500
Create, external RF signals transmission line 500 allows the little of the direct RF signals transmitted by the resonator 114 of waveguide filter 100
Partial transmission, and more particularly allow the resonator 114 of monolithic 103 to be transmitted directly to the resonator 118 of waveguide filter 100
It is interior, and more particularly via bridge joint and the conductive material 504 of the corresponding resonator 114 and 118 that waveguide filter 100 is electrically interconnected
Inside or interior bar be transferred to monolithic 103 resonator 118 and more particularly corresponding monolithic 101 and 103 114 He of resonator
In 118.
Another cross-couplings or indirect magnetic/inductance RF signal transmission paths c are by another 501 boundary of external RF signals transmission line
Determine and create, external RF signals transmission line 501 allows the direct RF signals transmitted by the resonator 121 of waveguide filter 100
Fraction transmission, and more particularly allow the resonator 121 of monolithic 105 to be transmitted directly to the resonance of waveguide filter 100
In the resonator 123 of device 123 and more particularly monolithic 107.
According to the present invention, the cross-couplings of RF signals as above advantageously create corresponding first and second pairs of transmission
Zero, wherein first pair will be located under the passband of waveguide filter 100, and second pair will be positioned at the passband of waveguide filter 100
On, as shown in figure 8, Fig. 8 is the curve chart of the performance/frequency response of the waveguide filter 100 for illustrating in fig 1 and 2, wherein
It is showing along the decay (measuring in units of dB) of vertical or Y-axis and is showing along the frequency of level or X-axis (in units of MHz
Measurement).
The another embodiment of waveguide filter of the invention 200 is described in Fig. 4,5,6 and 7, and waveguide filter 200 exists
Structurally and functionally identical with waveguide filter 100, exception is that two end monolithics 101 and 107 of waveguide filter 100 are in ripple
Two end monolithic 101a and 107a generations for being structurally and functionally similar to two end monolithics 101 and 107 are used in waveguide filter 200
Replace, it is in addition to two are held monolithic 101a and 107a to include corresponding cutting or step 236 and 238 in addition, such as more detailed below
Thin description.In view of the above, waveguide filter 100 and define its corresponding monolithic 101,103,105 and 107 structure and
The description in early time of function is by with regard to waveguide filter 200 and defining its corresponding monolithic 101a, 103,105 and 107a
Reference be incorporated herein, in addition to being such as discussed below in addition.
More particularly, monolithic 101a and 107a include respectively in addition and define end stand rank or cutting 236 and 238, and each
Include lower vertical equity outer surface 102, relative longitudinally perpendicular outer surface 106 and corresponding monolithic 101a in the illustrated embodiment
It is recessed or fluting with the usual L-shaped of 107a and the more particularly end lateral surfaces 110 of respective end resonator 114 and 123 or
Have shoulder or reeded area or section, medium ceramic material is removed or is not existed from resonator 114 and 123.
State in another way, respective step 236 and 238 each corresponding monolithic 101a and 107a end section or area and
It is more particularly in respective end resonator 114 and 123 or fixed by the end section or regional boundary of each corresponding monolithic 101a and 107a, accordingly
End highly little height of the resonator 114 and 123 with the remainder than corresponding monolithic 101a and 107a.
Stated in another mode and with reference to Fig. 4,5,6 and 7, respective step 236 and 238 each include being defined at corresponding list
The usual L-shaped of the respective end resonator 114 and 123 on block 101a and 107a is recessed or reeded part, and which is included in phase
Answer the lower horizontal outer surface 102 of monolithic 101a and 103a inwardly positioning or orient, and corresponding monolithic 101a and 103a lower level
Outer surface 102 separates the outer surface 240 generally horizontal with parallel first and the lateral outer ends in corresponding monolithic 101a and 107a
Surface 110 inwardly positions or orients, separates logical with parallel second with the lateral outer ends surface 110 of corresponding monolithic 101a and 107a
The surface of Chang Chuizhi or wall 242.
Monolithic 101a and 107a each include the electric RF signal inputs/output electricity of the form in corresponding through hole 146 in addition
Pole, it is in be typically normal to its longitudinal axis L that through hole 146 is passed through1Relation corresponding monolithic 101a and 107a main body and more particularly
Through respective step 236 and 238 and still more particularly in the surface 240 of respective step 236 and 238 and corresponding monolithic 101a
The surface 240 and surface 104 of 103a between and to be typically normal to respective step 236 and 238 and corresponding monolithic 101a and
Main body of the relation on the surface 104 of 103a through the respective end resonator 114 and 123 defined in corresponding monolithic 101a and 107a
Extend.
Still more particularly, the corresponding horizontal stroke of corresponding RF signal inputs/output through hole 146 and corresponding monolithic 101a and 103a
Separate parallel with usual to side end surface 110, and be defined in difference ledge surface 240 and each corresponding monolithic 101a's and 103a
The corresponding generally rounded opening terminated in the monolith surface 102 of top.
RF signal inputs/output through hole 146 is positioned and is placed in the inside of corresponding monolithic 101a and 107a and in side
Between surface 110 and step wall or surface 242 and in side end surface 110 and step wall or surface 242 generally separate with it is parallel
Relation respective step 236 and 238 in and through corresponding monolithic 101a and 107a inside and respective step 236 and 238 prolong
Stretch.
In the illustrated embodiment, the slit 124 in corresponding monolithic 101a and 107a positioned at corresponding monolithic 101a and
The horizontal vertical outer end face 110 of 107a separates, it is relative with generally parallel relation；In corresponding monolithic 101a and 107a
Respective through hole 146 is positioned at the horizontal vertical outer end face 110 in corresponding monolithic 101a and 107a and corresponding monolithic 101a and 107a
In corresponding monolithic 101a and 107a between many slits 124；And respective step 236 and 238 and more particularly which corresponding hangs down
Straight end surface 242 terminates at the point or position for lacking respective slots 124, i.e., respective step 236 and 238 does not extend to corresponding narrow
Separate in groove 124 and with slit 124.
Although having taught the present invention with particular reference to shown embodiment, however, it is understood that person skilled in the art
Member it will be recognized that, change in form and details can be made without departing from the spirit and scope of the present invention.The embodiment
It is considered in answering in all respects illustrative rather than restricted.
For example, it should be appreciated that, can be by along including and the end resonator/monolithic comprising RF signal inputs/lead-out terminal
Between x-axis remove or add extra intermediate resonator/monolithic to change waveguide filter 100 and 200 to include less than 8
Pole is more than 8 poles.
As another example, also understand, waveguide filter 100 and 200 can be changed so that including waveguide filter 100
Each monolithic include and define the extra resonance device along y-axis, such as each monolithic is defined by two slits and two RF letters
The embodiment of number detached three resonators of transmission bridge.
As another example, it should be appreciated that waveguide filter 100 and 200 can be modified to include the embodiment of accompanying drawing
Multiple monolithics with resonator, these resonators along x-z normal axis and adjacent and side by side relationship x-z normal axis and not
It is to stack on top of each other on the x-y normal axis of adjacent and side by side relationship.
As another example and such as by quoting Co-pending U.S. Patent Application serial number 13/373,862 by simultaneously
Enter described, it should be appreciated that step 236 and 238 can have disclosed in the accompanying drawings " progressively falling " or " stepping in " type or
Described " being stepped up " or " outside is being merged in by quoting Co-pending U.S. Patent Application serial number 13/373,862
Stepping " projection type, and can pass through to increased or decrease size (i.e. depth or the thickness of " progressively falling " or " stepping in " step-length
Degree) or by increaseing or decreasing the size (i.e. height) of " being stepped up " or " stepping out " adjusting the outside of waveguide filter
Bandwidth.
Claims (13)
1. a kind of waveguide filter for transmitting RF signals, including：
The end block of the single dielectric material of a pair of solid, each end block define at least one pair of resonator, RF signal transmissions input/
Output transmission electrode, the outer surface, fixed by the regional boundary for not having conductive material of the outer surface covered by layer of conductive material
And define for transmitting the RF signal transmission windows in the path of RF signals, extending in the outer surface and dielectric material and divide
Define for passing from least first open slot of at least one pair of resonator and between described at least one pair of resonator
An at least RF signal transmission bridges of the dielectric material in the second path of defeated RF signals；
The internal RF signal transmission block of the single dielectric material of one or more solid-states, each internal RF signal transmission block are defined
At least second pair resonator, the second outer surface covered by layer of conductive material, by no conduction material of second outer surface
Corresponding second regional boundary of material is fixed and defines for transmitting a pair the 2nd RF signal transmission windows in the 3rd path of RF signals
Mouthful, extend to second outer surface and dielectric material in and separate described at least second pair of resonator at least second be open it is narrow
Groove and define between at least second pair resonator for transmit RF signals the 4th path dielectric material at least
2nd RF signal transmission bridges；And
The single dielectric material of the end block and one or more of solid-states of the single dielectric material of the pair of solid-state
Internal RF signal transmission block is adjoined one or many with the outer surface of the end block of the single dielectric material of the pair of solid-state
The coupling of the second outer surface of the internal RF signal transmission block of the single dielectric material of individual solid-state is together；And it is corresponding
RF signal inputs/output electrode, corresponding at least one pair of resonator, corresponding at least second pair resonator, it is corresponding at least
The group of the first and second RF signal transmission bridges, corresponding RF signal transmissions window and corresponding a pair the 2nd RF signal transmission windows
The directapath defined for by waveguide filter transmission RF signals is unified.
2. waveguide filter as claimed in claim 1, wherein：
Each of the end block of the single dielectric material of the pair of solid-state include a pair of opposite external side surfaces, be defined in it is corresponding
One of a pair of opposite external side surfaces in the pair of solid-state single dielectric material end block each in RF
Signal transmission window and be defined in corresponding a pair of opposing outer faces another in corresponding at least first opening it is narrow
Groove；
Each of the internal RF signal transmission block of the single dielectric material of one or more of solid-states include a pair it is relative
Outer surface, second pair of RF signal transmissions window being correspondingly defined in the pair of opposite external side surface and it is defined in
In corresponding a pair of opposite external side surfaces and be located between corresponding second couple of RF signal transmission windows corresponding at least second
Open slot, directapath are the substantially snakelike paths for transmitting RF signals.
3. a kind of dielectric waveguide filter, including：
The internal block of the end block of the single dielectric material of a pair of solid and the single dielectric material of one or more solid-states, respectively
From include by layer of conductive material cover multiple outer surfaces and be coupled together to define along at least the first normal axis
The multiple resonators arranged with side by side relationship with the second normal axis；
Each of the end block of the single dielectric material of the pair of solid-state is included by not having on of multiple outer surfaces
The RF signal transmissions window for having the regional boundary of conductive material fixed and the multiple outside tables for extending to and including RF signal transmission windows
At least the first open slot in another outer surface of the relative multiple outer surfaces of the corresponding outer surface in face；
Each of the internal block of the single dielectric material of one or more of solid-states is included by the phase of multiple outer surfaces
A pair relative RF signal transmission windows that the respective area for not having conductive material on outer surface is limited, it is one or more of
During each of the internal block of the single dielectric material of solid-state includes the opposite external side surface for extend to multiple outer surfaces
In one outer surface and positioned at corresponding a pair at least the second open slots relatively between RF signal transmission windows；
The first and second RF signal inputs/output on the end block of the single dielectric material for being each defined in the pair of solid-state
Electrode；
The single dielectric material of the end block and one or more of solid-states of the single dielectric material of the pair of solid-state
Internal block with the internal block of the single dielectric material of one or more of solid-states be located at the pair of solid-state it is single
Coupling between the end block of dielectric material together, and the end block and internal block of the single dielectric material of the solid-state
Multiple outer surfaces selected outer surface and RF signal transmission windows it is adjacent to each other with the first and second RF signals
Define the first direct RF signal paths transmission path between input/output electrode, the first direct RF signal transmission paths are first
The side of each of normal axis and the second normal axis upwardly extends；And
The first indirect RF signal transmission paths between first and second RF signal inputs/output electrode, the first indirect RF signals
Transmission path extends in the direction of the second axis.
4. dielectric waveguide filter as claimed in claim 3, the wherein direct RF signal transmission paths of the first of RF signals are usual
For snakelike.
5. a kind of waveguide filter, including：
A pair of end blocks, each end block define at least one pair of resonator and RF signal transmission input/output transmission electrodes；
One or more internal RF signal transmission blocks, each internal RF signal transmission block define at least one pair of resonator and are located at institute
State between a pair of end blocks；
At least one RF signal transmission bridges, which is defined at the pair of end block between corresponding at least one pair of resonator and interior
In each in portion's block and interconnect corresponding at least one pair of resonator；
Multiple internal RF signal transmission windows, its be defined at the pair of end block and internal block each between, it is described corresponding
RF signal inputs/output electrode, described at least one pair of resonator, corresponding at least one RF signal transmissions bridge and corresponding many
The combination of individual internal RF signal transmission window is defined together for the directapath by waveguide filter transmission RF signals；
The pair of end block and internal block include the single block of dielectric material being coupled with side by side relationship；
The outer surface of the pair of end block and internal block is coated with layer of conductive material, corresponding multiple internal RF signal transmission windows
Mouth is fixed by the regional boundary of the outer surface of the pair of end block and internal block of no conductive material；And
External RF signals transmission line extends between the pair of end block and internal block, for providing in the pair of end block and interior
Cross-couplings RF signal transmission path between portion's block.
6. waveguide filter as claimed in claim 5, wherein each in the pair of end block and internal block define respectively with
Corresponding RF signal transmissions bridge is at least one of collinear relationship slit.
7. waveguide filter as claimed in claim 6, wherein corresponding multiple RF signal transmissions windows are with alternately and staggeredly
Relation is located between the pair of end block and internal block, wherein the RF signals are passed by waveguide filter with serpentine pattern
It is defeated.
8. a kind of dielectric waveguide filter, including：
Block of dielectric material, which defines along at least the first normal axis and the second normal axis the multiple resonance arranged with side by side relationship
Device；
First RF signal inputs/output electrode and the 2nd RF signal inputs/output electrode, which is defined at the block of dielectric material
On；
The first direct RF letters between the RF signal inputs/output electrode and the 2nd RF signal inputs/output electrode
Number path transmission path, the first direct RF signal transmission paths are upwardly extended in the side of first axle and the second axle；
The first indirect RF letters between the RF signal inputs/output electrode and the 2nd RF signal inputs/output electrode
Number transmission path, the first indirect RF signal transmission paths are upwardly extended in the side of second axle；
The block of dielectric material defines multiple internal RF signal transmission windows, the plurality of internal RF signal transmission window defining institute
State at least a portion of the first direct RF signal transmission paths；And
The plurality of internal RF signal transmission window is arranged with alternate relation on the opposite side of the longitudinal axis of the waveguide filter
To define the first generally snakelike direct RF signal transmission paths.
9. dielectric waveguide filter as claimed in claim 8, wherein external transmission lines define the described first indirect RF signals and pass
Defeated path.
10. dielectric waveguide filter as claimed in claim 9, wherein the block of dielectric material is coupling in by with side by side relationship
The multiple independent block of dielectric material composition for rising, and first normal axis and the second normal axis define x and y-axis respectively.
A kind of 11. dielectric waveguide filters, including：
First medium material block, second medium material block, the 3rd block of dielectric material and the 4th block of dielectric material, which defines respectively
More than one resonator, more than second resonator, the 3rd many resonators and the 4th many resonators, the first medium material
Block, second medium material block, the 3rd block of dielectric material and the 4th block of dielectric material are coupled with the side by side relationship for adjoining；
First direct-coupling RF signal transmission windows, the second direct-coupling RF signal transmissions window and the 3rd direct-coupling RF signals
Transmission window, which is defined at the first medium material block, second medium material block, the 3rd block of dielectric material and the 4th medium
For RF signals are transferred to the 4th block of dielectric material from the first medium material block in the inside of material block；And
First external transmission lines and the second external transmission lines, which is respectively in the first medium material block and second medium material block
Extend between the 3rd block of dielectric material and the 4th block of dielectric material for providing in the first medium material block and the
Indirect cross coupling between four block of dielectric material.
12. dielectric waveguide filters as claimed in claim 11, wherein the first medium material block and the 4th dielectric material
Block each defines RF signal inputs/output electrode, the first direct-coupling RF signal transmission windows, the second direct-coupling RF letters
Number transmission window and the 3rd direct-coupling RF signal transmissions window for substantially snakelike pattern by the RF signals from institute
State first medium material block and be transferred to the mode of the 4th block of dielectric material and arrange.
13. dielectric waveguide filters as claimed in claim 12, wherein each described RF signal inputs/output electrode are by passing through
In the first medium material block and the 4th block of dielectric material each extend through hole define, and further include with each other
The relation conllinear with the longitudinal axis of the waveguide filter is alignd and separates corresponding more than first resonator, more than second resonance
Device, the 3rd many resonators and the 4th many resonators respectively the first medium material block, second medium material block,
The first slit, the second slit, the 3rd slit and the 4th slit in three block of dielectric material and the 4th block of dielectric material.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201361830476P | 2013-06-03 | 2013-06-03 | |
| US61/830476 | 2013-06-03 | ||
| US14/289849 | 2014-05-29 | ||
| US14/289,849 US9130256B2 (en) | 2011-05-09 | 2014-05-29 | Dielectric waveguide filter with direct coupling and alternative cross-coupling |
| PCT/US2014/040298 WO2014197325A1 (en) | 2013-06-03 | 2014-05-30 | Dielectric waveguide filter with direct coupling and alternative cross-coupling |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105359335A CN105359335A (en) | 2016-02-24 |
| CN105359335B true CN105359335B (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201480031583.2A Active CN105359335B (en) | 2013-06-03 | 2014-05-30 | With direct-coupling and alternate cross-linked dielectric waveguide filter |
Country Status (4)
| Country | Link |
|---|---|
| KR (1) | KR20160013892A (en) |
| CN (1) | CN105359335B (en) |
| DE (1) | DE112014002660T5 (en) |
| WO (1) | WO2014197325A1 (en) |
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|---|---|---|---|---|
| GB201412682D0 (en) * | 2014-07-17 | 2014-09-03 | Radio Design Ltd | Ceramic filter apparatus and method of use thereof |
| WO2016191116A1 (en) * | 2015-05-22 | 2016-12-01 | Cts Corporation | Dielectric waveguide filter with direct coupling and alternative cross-coupling |
| WO2018164821A1 (en) | 2017-03-10 | 2018-09-13 | Intel IP Corporation | User equipment (ue), evolved node-b (enb) and methods of paging in accordance with a relay arrangement |
| CN110534849A (en) * | 2019-05-31 | 2019-12-03 | 摩比科技（深圳）有限公司 | It is a kind of to introduce capacitively coupled dielectric waveguide filter |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1398014A (en) * | 2001-07-17 | 2003-02-19 | 东光株式会社 | Dielectric waveguide tube filter and its mounting structure |
| EP1363349A1 (en) * | 1999-01-29 | 2003-11-19 | Toko, Inc. | Dielectric filter |
| CN102084540A (en) * | 2009-07-10 | 2011-06-01 | Kmw株式会社 | Multi-mode resonant filter |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3379415B2 (en) * | 1997-02-14 | 2003-02-24 | 株式会社村田製作所 | Dielectric filter and dielectric duplexer |
| EP1411582B1 (en) * | 2002-07-29 | 2006-03-08 | Alcatel | Canonical general response bandpass microwave filter |
| US9030279B2 (en) * | 2011-05-09 | 2015-05-12 | Cts Corporation | Dielectric waveguide filter with direct coupling and alternative cross-coupling |
-
2014
- 2014-05-30 DE DE112014002660.3T patent/DE112014002660T5/en not_active Withdrawn
- 2014-05-30 WO PCT/US2014/040298 patent/WO2014197325A1/en active Application Filing
- 2014-05-30 KR KR1020157034325A patent/KR20160013892A/en not_active Application Discontinuation
- 2014-05-30 CN CN201480031583.2A patent/CN105359335B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1363349A1 (en) * | 1999-01-29 | 2003-11-19 | Toko, Inc. | Dielectric filter |
| CN1398014A (en) * | 2001-07-17 | 2003-02-19 | 东光株式会社 | Dielectric waveguide tube filter and its mounting structure |
| CN102084540A (en) * | 2009-07-10 | 2011-06-01 | Kmw株式会社 | Multi-mode resonant filter |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20160013892A (en) | 2016-02-05 |
| CN105359335A (en) | 2016-02-24 |
| DE112014002660T5 (en) | 2016-02-18 |
| WO2014197325A1 (en) | 2014-12-11 |
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