CN103515678A - A communication radio frequency device and a filter thereof - Google Patents
A communication radio frequency device and a filter thereof Download PDFInfo
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- CN103515678A CN103515678A CN201210201129.XA CN201210201129A CN103515678A CN 103515678 A CN103515678 A CN 103515678A CN 201210201129 A CN201210201129 A CN 201210201129A CN 103515678 A CN103515678 A CN 103515678A
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Abstract
The embodiment of the invention discloses a communication radio frequency device and a magnetic coupling method for resonators of a filter of the communication radio frequency device. The filter comprises a first cavity and a second cavity which are arranged at intervals, a first medium resonator vertically installed on the bottom portion of the first cavity, a second medium resonator vertically installed on the bottom portion of the second cavity, a coupling window and a coupling member. The coupling window is arranged between the first cavity and the second cavity, so that the first cavity and the second cavity are in communication connection. The coupling member penetrates through the coupling window. The two ends of the coupling member are respectively connected with a sidewall of the first cavity and a sidewall of the second cavity. The two ends of the coupling member are respectively positioned on the two sides of a central line form by the coupling window, the first medium resonator, and the second medium resonator, so that reversed polarity coupling between the first medium resonator and the second medium resonator is realized. The communication radio frequency device and the filter thereof provided by the embodiment of the invention are simple in structure, good in out-band clutter suppression effect, and have a relatively high Q value.
Description
Technical field
The embodiment of the present invention relates to signal process field, specifically relates to a kind of communication radio frequency device and filter thereof.
Background technology
In prior art, the TE mould (transverse electric mode) of filter be a kind of in microwave transmission can excited modes, its electric field only has cross stream component ，Er magnetic field in all directions, all to have component.TE mould ceramic dielectric resonator is generally comprised of metallic cavity and ceramic dielectric block, and apply the filter of this TE mould ceramic dielectric resonator, General Requirements is under the prerequisite of the less volume of product and lower loss, realize the outer clutter of higher band and suppress, this just needs TE mould ceramic dielectric resonator to have higher quality factor (Q value).
Refer to Figure 1A to Fig. 2, Figure 1A is the signal transmission route schematic diagram of prior art TE mode filter, Figure 1B is the magnetic direction schematic diagram at a time of resonator of filter shown in Figure 1A, Fig. 2 is the response curve indicatrix of the mode filter of TE shown in Fig. 1, in Fig. 2, abscissa is frequency (unit is MHz), and ordinate is the amplitude (unit is dB) of response.
TE mode filter comprises a plurality of TE mould ceramic dielectric resonators, for example comprise the first medium resonator 1 on the bottom surface that is arranged at intervals at different cavitys, second medium resonator 2, the 3rd dielectric resonator 3 and the 4th dielectric resonator 4, during work, signal passes through first medium resonator 1 successively, second medium resonator 2, the 3rd dielectric resonator 3 and the 4th dielectric resonator 4, but be not difficult to find out from Fig. 2, this orderly transfer mode, filter does not form good inhibition point in its both sides at passband when response, the outer clutter inhibition of band is on the low side, do not realize higher Q value.
Please further consult Figure 1B, between first medium resonator 1 and the 4th dielectric resonator 4, at one time, the magnetic direction of one of them upwards, another magnetic direction is downward, be that magnetic direction between any time two resonators is substantially contrary, and cause realizing the electromagnetic field couples transmission between first medium resonator 1 and the 4th dielectric resonator 4; Furthermore, the magnetic-field component of TE mould ceramic dielectric resonator is difficult to distinguish, the electromagnetic field direction between impalpable first medium resonator 1 and the 4th dielectric resonator 4, also just cannot realize its electromagnetic field couples.
The present inventor, through further investigation, to obtain the present invention, has realized the reversed polarity coupling of the magnetic field energy between resonator through experiment repeatedly.
Summary of the invention
The technical problem that the embodiment of the present invention mainly solves is to provide a kind of communication radio frequency device and filter thereof, so that realize reversed polarity coupling between the resonator of filter.
For solving the problems of the technologies described above, the technical scheme that the embodiment of the present invention adopts is: a kind of filter is provided, this filter comprises spaced the first cavity and the second cavity and is vertically installed on the first medium resonator of this first cavity bottom and is vertically installed on the second medium resonator of this second cavity bottom, and this filter also comprises coupling window and male part.This coupling window is located between this first cavity and this second cavity so that this first cavity and this second cavity are communicated with; This male part runs through this coupling window, these male part two ends are connected with this first cavity wall, the second cavity wall respectively, and the two ends of this male part lay respectively at the both sides of the center line of this coupling window, this first medium resonator and this second medium resonator three formation, so that this first medium resonator and this second medium resonator are realized reversed polarity coupling.
For solving the problems of the technologies described above, another technical scheme that the embodiment of the present invention adopts is: a kind of communication radio frequency device is provided, and this communication radio frequency device adopts above-mentioned filter, and this filter is located at the transceiver circuit part of this communication radio frequency device.This filter is for signal is selected, and this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
For solving the problems of the technologies described above, another technical scheme that the embodiment of the present invention adopts is: a kind of filter is provided, this filter comprises the first cavity that interval arranges and is sequentially communicated with, the second cavity, the 3rd cavity and the 4th cavity, and the first medium resonator that is vertically installed on this first cavity bottom, vertically be installed on the second medium resonator of this second cavity bottom, vertically be installed on the 3rd dielectric resonator of the 3rd cavity bottom and be vertically installed on the 4th dielectric resonator of the 4th cavity bottom, this first medium resonator, this second medium resonator, the 3rd dielectric resonator and the 4th dielectric resonator are sequentially realized signal coupling transmission.This filter also comprises coupling window and male part: this coupling window is located between this first cavity and the 4th cavity so that this first cavity and the 4th cavity are communicated with; This male part runs through this coupling window, the two ends of this male part are connected with this first cavity wall, the 4th cavity wall respectively, and these male part two ends lay respectively at the both sides of the center line of this coupling window, this first medium resonator and the 4th dielectric resonator three formation, so that this first medium resonator and the 4th dielectric resonator are realized reversed polarity coupling.
For solving the problems of the technologies described above, another technical scheme that the embodiment of the present invention adopts is: a kind of communication radio frequency device is provided, this communication radio frequency device comprises above-mentioned filter, this filter is located at the transceiver circuit part of this communication radio frequency device, for signal is selected, this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The embodiment of the present invention is set up coupling window between spaced cavity, make to be communicated with between two cavitys, two ends by male part are connected with the sidewall of two cavitys respectively again, and because the two ends of male part lay respectively at the both sides of the center line of this coupling window and two resonator three formation, when the resonator in two cavitys produces magnetic field, the energy in its magnetic field is absorbed respectively by the two ends of the male part of these center line both sides, and its direction vector is identical after being coupled by male part, finally realized the reversed polarity coupling of electromagnetic field and energy.The embodiment of the present invention is simple in structure, when having realized between resonator reversed polarity coupling, is with outer clutter inhibition better, and possesses higher Q value.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Figure 1A is the signal transmission route schematic diagram of prior art TE mode filter;
Figure 1B is the magnetic direction schematic diagram at a time of resonator of filter shown in Figure 1A;
Fig. 2 is the response curve indicatrix of the mode filter of TE shown in Fig. 1;
Fig. 3 is the structural representation of filter one embodiment of the present invention;
Fig. 4 is the structural representation of the male part of filter shown in Fig. 3;
Fig. 5 is the structural representation of another embodiment of filter of the present invention;
Fig. 6 is the structural representation of an embodiment of filter shown in Fig. 5;
Fig. 7 is the schematic flow sheet of the resonator magnetic coupling method of filter of the present invention; And
Fig. 8 is the response curve indicatrix of the filter that provides of the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
The embodiment of the present invention provides a kind of filter, this filter comprises spaced the first cavity and the second cavity and is vertically installed on the first medium resonator of this first cavity bottom and is vertically installed on the second medium resonator of this second cavity bottom, and this filter also comprises coupling window and male part.This coupling window is located between this first cavity and this second cavity so that this first cavity and this second cavity are communicated with; This male part runs through this coupling window, these male part two ends are connected with this first cavity wall, the second cavity wall respectively, and the two ends of this male part lay respectively at the both sides of the center line of this coupling window, this first medium resonator and this second medium resonator three formation, so that this first medium resonator and this second medium resonator are realized reversed polarity coupling.
The embodiment of the present invention has solved between the resonator in two cavitys of prior art cannot direct-coupled problem, furthermore, the direction in the magnetic field producing in same time for first medium resonator and second medium resonator is difficult to the situation of prediction judgement, the embodiment of the present invention adopts the mode of coupling window and male part, makes to realize reversed polarity between first medium resonator and second medium resonator and is coupled.The filter construction of the embodiment of the present invention is simple, when having realized between resonator reversed polarity coupling, is with outer clutter inhibition better, and possesses higher Q value.
The embodiment of the present invention also provides a kind of communication radio frequency device, and this communication radio frequency device adopts above-mentioned filter, and this filter is located at the transceiver circuit part of this communication radio frequency device.This filter is for signal is selected, and this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The filter construction that the communication radio frequency device of the embodiment of the present invention adopts is simple, when having realized between resonator reversed polarity coupling, is with outer clutter inhibition better, and possesses higher Q value.
The embodiment of the present invention also provides a kind of filter in addition, this filter comprises the first cavity that interval arranges and is sequentially communicated with, the second cavity, the 3rd cavity and the 4th cavity, and the first medium resonator that is vertically installed on this first cavity bottom, vertically be installed on the second medium resonator of this second cavity bottom, vertically be installed on the 3rd dielectric resonator of the 3rd cavity bottom and be vertically installed on the 4th dielectric resonator of the 4th cavity bottom, this first medium resonator, this second medium resonator, the 3rd dielectric resonator and the 4th dielectric resonator are sequentially realized signal coupling transmission.This filter also comprises coupling window and male part: this coupling window is located between this first cavity and the 4th cavity so that this first cavity and the 4th cavity are communicated with; This male part runs through this coupling window, the two ends of this male part are connected with this first cavity wall, the 4th cavity wall respectively, and these male part two ends lay respectively at the both sides of the center line of this coupling window, this first medium resonator and the 4th dielectric resonator three formation, so that this first medium resonator and the 4th dielectric resonator are realized reversed polarity coupling.
The embodiment of the present invention is set up coupling window between spaced the first cavity and the 4th cavity, make to be communicated with between the first cavity and the 4th cavity, two ends by male part are connected with the sidewall of the 4th cavity with the first cavity respectively again, and because the two ends of male part lay respectively at the both sides of the center line of this coupling window, first medium resonator and the 4th dielectric resonator three formation, when the resonator in the first cavity and the 4th cavity produces magnetic field, can realize reversed polarity coupling.The embodiment of the present invention is simple in structure, has realized reversed polarity coupling between resonator, is with outer clutter inhibition better, and possesses higher Q value.
The embodiment of the present invention also provides a kind of communication radio frequency device in addition, this communication radio frequency device comprises above-mentioned filter, this filter is located at the transceiver circuit part of this communication radio frequency device, for signal is selected, this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The filter construction that the communication radio frequency device of the embodiment of the present invention adopts is simple, when having realized between resonator reversed polarity coupling, is with outer clutter inhibition better, and possesses higher Q value.
Below in conjunction with concrete accompanying drawing embodiment, be described.
Embodiment mono-, refers to Fig. 3 and Fig. 4, and Fig. 3 is the structural representation of filter one embodiment of the present invention, and Fig. 4 is the structural representation of the male part of filter shown in Fig. 3.
The present embodiment filter include but not limited to spaced the first cavity 10, the second cavity 20 and be located at the first cavity 10 and the second cavity 20 between coupling window 30.
The first cavity 10 and the second cavity 20 all can adopt the electric conducting materials such as metal to make, and the first cavity 10 bottoms are vertically provided with first medium resonator 101, the second cavity 20 bottoms, second medium resonator 201 are vertically installed.In the present embodiment, first medium resonator 101 and second medium resonator 201 are TE mould ceramic dielectric resonator, it is formed by the stacked setting of a plurality of ceramic dielectric block, the main direction in the magnetic field of its generation is roughly parallel to the axial direction of residing cavity, be similar to the magnetic signature of the earth, because belonging to prior art, in the scope of understanding the art personnel, do not repeat.It should be noted that, in the identical moment, first medium resonator 101 is substantially contrary with the direction in the magnetic field that second medium resonator 201 produces at one time.
In order further to guarantee the coupling effect between first medium resonator 101 and second medium resonator 201, on coupling window 30, coordinate and be provided with the male part 31 that electric conducting material makes, male part 31 is through coupling window 30, male part 31 two ends are connected with the first cavity 10 sidewalls, the second cavity 20 sidewalls respectively, and male part 31 two ends lay respectively at the both sides of the center line of coupling window 30, first medium resonator 101 and the 201 threes' formation of second medium resonator.
Particularly, male part 31 comprises the first coupling part 311, the second coupling part 312 and connect the first coupling part 311 and the second coupling part 312 convergence part 313, preferably, in order to save material, reduce costs, convergence part 313 is vertical bar shaped and balances each other with this center line, as previously mentioned, according to the magnetic signature of first medium resonator 101 and second medium resonator 201, the first coupling part 611 and the second coupling part 612 lay respectively at different both sides, convergence part 613, to realize the reversed polarity coupling between first medium resonator 101 and second medium resonator 201, connected mode between itself and the first cavity 10 and the second cavity 20 is as follows.
The sidewall of the first coupling part 311 and the first cavity 10 is electrically connected and forms the first equivalent magnetic flux ring A, that is to say, be similar to the galvanomagnetic effect principle of coil, sidewall at the first coupling part 311 and the first cavity 10 coordinates the first equivalent magnetic flux ring A forming, the plane at the direction place in the magnetic field that the plane at its place produces with first medium resonator 101 becomes predetermined angle, for example at a time, the magnetic field that first medium resonator 101 produces is directed upwards towards its opening part from the first cavity 10 bottom surface, and at another constantly, from the first cavity 10, Open Side Down points to its bottom surface in the magnetic field that first medium resonator 101 produces, that is to say, be similar to the magnetic field of the earth, just in the different moment, magnetic field exists from " south " utmost point and points to " north " utmost point or point to " south " utmost point two states from " north " utmost point, in this way, the energy in the magnetic field that first medium resonator 101 produces can be absorbed by the first coupling part 311 well, because belonging to prior art, do not repeat.The present embodiment can be adopted and adjust in two ways magnetic field that first medium resonator 101 produces through the magnetic flux of the first equivalent magnetic flux ring A: mode one, adjust the first coupling part 311 position and adjust the size of the area of the first equivalent magnetic flux ring A, for example the first coupling part 311 is increased to the area of the first equivalent magnetic flux ring A near first medium resonator 101 as far as possible; Mode two, because first medium resonator 101 is stronger the closer to the magnetic field intensity of the outline of middle ceramic dielectric block, that is to say, adjusts the distance of the first coupling part 311 to first cavity 10 bottom surfaces to adjust the size of magnetic flux.
And the second coupling part 312 is electrically connected with the sidewall of the second cavity 20 and coordinate formation the second equivalent magnetic flux ring B with coupling window 30, in like manner, be similar to the galvanomagnetic effect principle of coil, at the second coupling part 312, the part base of the sidewall of the second cavity 20 and coupling window 30 coordinates the second equivalent magnetic flux ring B forming, the plane at the direction place in the magnetic field that the plane at its place produces with second medium resonator 201 becomes predetermined angle, in this way, the energy in the magnetic field that second medium resonator 201 produces just can be absorbed by the second coupling part 312 well, the concrete principle in second medium resonator 201 magnetic field refers to the associated description of first medium resonator 101, do not repeat them here.The present embodiment can be adopted and adjust in two ways magnetic field that second medium resonator 201 produces through the magnetic flux of the second equivalent magnetic flux ring B: mode one, adjust the second coupling part 312 position and adjust the size of the area of the second equivalent magnetic flux ring B, for example the second coupling part 312 is increased to the area of the second equivalent magnetic flux ring B near second medium resonator 201 as far as possible; Mode two, because second medium resonator 201 is stronger the closer to the magnetic field intensity of the outline of middle ceramic dielectric block, that is to say, adjust the distance of the second coupling part 312 to second cavity 20 bottom surfaces to adjust the magnetic flux through the second equivalent magnetic flux ring B.
In addition, convergence part 313 is through coupling window 30, and preferably, the outer uncoated insulating protective layer in convergence part 313, needs interval to arrange between the sidewall of convergence part 313 and coupling window 30 and base.As previously mentioned, be not difficult to find out, corresponding with the feature of the direction in first medium resonator 101 and second medium resonator 201 magnetic field: the first equivalent magnetic flux ring A and the second residing position of equivalent magnetic flux ring B lay respectively at convergence part 313 mutually away from both sides.
Be understandable that, the first coupling part 311, the second coupling part 312He convergence part 313 can be one-body molded, also can be electrically connected to by the mode being spirally connected or rivet.
The present embodiment filter is provided with after above-mentioned coupling window 30 and male part 31, and its specific works process is as follows:
While carrying out signal transmission, the magnetic field part that first medium resonator 101 produces passes the second equivalent magnetic flux ring B through the magnetic field part of the first equivalent magnetic flux ring A and 201 generations of second medium resonator, first medium resonator 101 magnetic field and energy thereof and second medium resonator 201 magnetic field and energy thereof are coupled first respectively part 31 and absorb, then by male part 31, be coupled, and the direction vector after its magnetic Field Coupling is identical, finally realize the reversed polarity coupling of first medium resonator 101 and second medium resonator 201.
The embodiment of the present invention adopts the mode of coupling window 30 and male part 31, solved the problem that between the resonator in prior art the first cavity 10 and the second cavity 20, directly reversed polarity is coupled, furthermore, the direction in the magnetic field producing in same time for first medium resonator 101 and second medium resonator 201 is difficult to the situation of prediction judgement, the embodiment of the present invention, by the mode of the first equivalent magnetic flux ring A and the second equivalent magnetic flux ring B, makes to realize reversed polarity between first medium resonator 101 and second medium resonator 201 and is coupled.The filter construction of the embodiment of the present invention is simple, has realized the magnetic-coupled while between resonator, is with outer clutter inhibition better, and possesses higher Q value.
Embodiment bis-, and referring to Fig. 5 is the structural representation of another embodiment of filter of the present invention.
As previously mentioned, the present embodiment filter includes but not limited to spaced the first cavity 40, the second cavity 50, coupling window 60, first medium resonator 401, second medium resonator 501 and male part 61, male part 61 comprises the first coupling part 611, the second coupling part 612 and connect the first coupling part 611 and the second coupling part 612 convergence part 613, the sidewall of the first coupling part 611 and the first cavity 40 is electrically connected to form the first equivalent magnetic flux ring C, the sidewall of the second coupling part 612 and the second cavity 50 is electrically connected to form the second equivalent magnetic flux ring D, coupling window 60 is run through in convergence part 613, its specific works process refers to the associated description of embodiment mono-, in the scope of understanding the art personnel, do not repeat, the present embodiment and embodiment mono-difference are:
The first cavity 40 sidewalls are provided with the first connecting portion (not shown) being electrically connected with the first coupling part 611, and the second cavity 50 sidewalls are provided with the second connecting portion 502 being electrically connected with the second coupling part 612.
As shown in Figure 5, the fixed platform that the first connecting portion and the second connecting portion 502 are projection, it lays respectively at the different both sides of coupling window 60, different both sides refer near the position any Liang Ge diagonal angle in coupling window 60 bottom surface, namely first medium resonator 401, the both sides of the center line that second medium resonator 501 and coupling window 60 threes form, so that the first equivalent magnetic flux ring C and the second equivalent magnetic flux ring D are positioned at different both sides, convergence part 613, correspondingly, the first coupling part 611 and the second coupling part 612 lay respectively at different both sides, convergence part 613, , male part 61 integral body are " Z " type or " S " type.Furthermore, in the present embodiment, the first coupling part 611, the second coupling part 612He convergence part 613 are in same plane and can be parallel with the first cavity 40 or the second cavity 50 bottom surface, and the first cavity 40 or the second cavity 50 bottom surface also can be parallel with coupling window 60 bottom surface.Certainly, in other embodiments, the first connecting portion and the second connecting portion 502 also can adopt the mode of draw-in groove, in this no limit.
For convenient, install, on the sidewall of the first cavity 40, be also provided with the first guide groove 402 for coordinating with the first coupling part 611, first guide groove 402 one end is mutually concordant so that the first coupling part 611 slips in the first guide groove 402 from this end with the opening of the first cavity 40, the other end is provided with the first connecting portion, with the first guide groove 402 coordinate the first coupling parts 611 make its by predetermined track slide into the first connecting portion place and with the first connecting portion butt.In like manner, the sidewall of the second cavity 50 is also provided with the second guide groove 503 for coordinating with the second coupling part 612, second guide groove 503 one end is mutually concordant so that the second coupling part 612 slips in the second guide groove 503 from this end with the opening of the second cavity 50, and the other end is provided with the second connecting portion 502.By the cooperation of the first guide groove 402 and the second guide groove 503, male part 61 can be installed in the intended manner.
When the first coupling part 611 of male part 61 and the second coupling part 612 enter into by the first guide groove 402 and the second guide groove 503 respectively in cavity and respectively after butt the first connecting portion and the second connecting portion 502, can the first coupling part 611 be connected with the first connecting portion by the mode that is spirally connected, rivets or weld, also can the second coupling part 612 be connected with the second connecting portion 502 by the mode that is spirally connected, rivets or weld.And if the first connecting portion and the second connecting portion 502 adopt the mode of draw-in groove, when the first coupling part 611 and the second coupling part 612 are by the first guide groove 402 and the second guide groove 503, need produce certain deformation, then after entering into draw-in groove, recover deformation, and then can firmly male part 61 be fixed in cavity.
Than embodiment mono-, the present embodiment is by the first cavity 40 and interior connecting portion and the guide groove of arranging of the second cavity 50, with further male part 61, thereby guaranteed the magnetic coupling effect of male part 61.The filter construction of the embodiment of the present invention is simple, when having realized between resonator reversed polarity coupling, is with outer clutter inhibition better, and possesses higher Q value.
Embodiment tri-, refer to Fig. 6, are the structural representations of an embodiment of filter shown in Fig. 5.
In concrete application, filter includes but not limited to the first cavity 71 that interval arranges and is sequentially communicated with, the second cavity 72, the 3rd cavity 73 and the 4th cavity 74, and the first medium resonator that is vertically installed on the first cavity 71 bottoms, vertically be installed on the second medium resonator of the second cavity 72 bottoms, vertically be installed on the 3rd dielectric resonator of the 3rd cavity 73 bottoms and be vertically installed on the 4th dielectric resonator of the 4th cavity 74 bottoms, signal is successively through the first cavity 71, the second cavity 72, the 3rd cavity 73 and the 4th cavity 74, by this first medium resonator, this second medium resonator, the 3rd dielectric resonator and the 4th dielectric resonator sequentially carry out signal coupling transmission.
It should be noted that, signal from the first cavity 71 to second cavitys 72 to the 3rd cavity 73 again to the process of the 4th cavity 74, can also comprise and be morely similar to the transmission cavity that this " it " font arranges and be arranged at a plurality of transmission resonators in a plurality of transmission cavitys, correspondingly, the orderly delivering path of signal also sequentially transmits according to " it " shape, in the process of transmission, Liang Ge interval arranges but is not between the transmission cavity on orderly delivering path arbitrarily, between the first cavity 71 and the 4th cavity 74, by adopting coupling window and male part 81, can realize the reversed polarity coupling between cavity.
Furthermore, because between the first cavity 71 and the 4th cavity 74, the signal transmission coupled modes of intersection dislocation by coupling window and male part 81, have been realized, when the filter of the embodiment of the present invention is tested, can respectively form a strong inhibition point on filter response curve passband both sides, make filter larger to the inhibition degree near passband, wherein, two strong inhibition points that form on passband are the transmission zero of normal theory, therefore, the filter of the embodiment of the present invention possesses the outer clutter inhibition of higher band.
For example, male part 81 comprises the first coupling part 811, the second coupling part 812He convergence part 813, input 821 and output 822, the specific works principle of male part 81 also refers to the associated description of embodiment above, and input 821 and output 822 belong to prior art, at this, do not repeat one by one.
The present embodiment filter, in the reversed polarity coupling realizing between the first cavity 71 and the 4th cavity 74, is with outer clutter inhibition better, and is possessed higher Q value.
Embodiment tetra-, and referring to Fig. 7 is the schematic flow sheet of the resonator magnetic coupling method of filter of the present invention.
The present embodiment filter comprises spaced the first cavity and the second cavity and is vertically installed on the first medium resonator in this first cavity and is vertically installed on the second medium resonator in this second cavity, and the resonator magnetic coupling method of this filter comprises:
Step S700 offers coupling window between this first cavity and this second cavity, so that be connected between this first cavity and this second cavity;
Step S701, male part is set, this male part comprises the first coupling part, the second coupling part and the convergence part that connects this first coupling part and this second coupling part, the sidewall of this first coupling part and this first cavity is electrically connected and forms the first equivalent magnetic flux ring, the sidewall of this second coupling part and this second cavity is electrically connected and forms the second equivalent magnetic flux ring ，Gai convergence part and runs through this coupling window.
In specific works process, the magnetic field part that this first medium resonator produces passes this second equivalent magnetic flux ring through the magnetic field part of this first equivalent magnetic flux ring and the generation of this second medium resonator, makes this first medium resonator and this second medium resonator realize reversed polarity coupling.
In addition, the resonator magnetic coupling method of the present embodiment filter can also realize the outer clutter inhibition of higher band, its process comprises: a plurality of transmission cavitys are set and a plurality of transmission resonators are set in a plurality of transmission cavitys, the first cavity, a plurality of transmission cavity and the second cavity are sequentially communicated with; Wherein, first medium resonator, a plurality of transmission resonator and second medium resonator are sequentially to carry out signal coupling transmission.By the signal transmission coupled modes of this first cavity and the dislocation of the second cavity intersection, when the filter of the embodiment of the present invention is tested, can respectively form a strong inhibition point on filter response curve passband both sides, make filter larger to the inhibition degree near passband, wherein, two strong inhibition points that form on passband are the transmission zero of normal theory, and therefore, the filter of the embodiment of the present invention possesses the outer clutter inhibition of higher band.
Embodiment five, and the embodiment of the present invention also provides a kind of communication radio frequency device in addition, and this communication radio frequency device adopts above-mentioned filter, and this filter is located at the transceiver circuit part of this communication radio frequency device.This filter is for signal is selected, and this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
Its specific works process also refers to the associated description of embodiment mono-to embodiment tetra-, in the scope of understanding, does not repeat the art personnel.
Refer to Fig. 8 and be the response curve indicatrix of the filter that the embodiment of the present invention provides, wherein, abscissa is frequency (unit is MHz), ordinate is the amplitude (unit is dB) of response, from Fig. 8, be not difficult to find out, the embodiment of the present invention realizes the magnetic-coupled while between resonator, has also formed two stronger inhibition points near position frequency values is 2320MHz and 2360MHz, realize the outer clutter inhibition of higher band, thereby possessed higher Q value.
Applied specific case herein principle of the present invention and execution mode are set forth, the explanation of above embodiment is just for helping to understand method of the present invention and core concept thereof; , for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention meanwhile.
Claims (15)
1. a filter, it is characterized in that, comprise spaced the first cavity and the second cavity and be vertically installed on the first medium resonator of described the first cavity bottom and be vertically installed on the second medium resonator of described the second cavity bottom, described filter also comprises:
Coupling window, is located between described the first cavity and described the second cavity so that described the first cavity and described the second cavity are communicated with;
Male part, run through described coupling window, described male part two ends are connected with described the first cavity wall, the second cavity wall respectively, and the two ends of described male part lay respectively at the both sides of the center line of described coupling window, described first medium resonator and described second medium resonator three formation, so that described first medium resonator and described second medium resonator are realized reversed polarity coupling.
2. filter according to claim 1, it is characterized in that, described male part comprises the first coupling part, the second coupling part and the convergence part that connects described the first coupling part and described the second coupling part, the sidewall of described the first coupling part and described the first cavity is electrically connected, the sidewall of described the second coupling part and described the second cavity is electrically connected, and described coupling window is run through in described convergence part;
Wherein, the magnetic field part of described first medium resonator generation passes the second equivalent magnetic flux ring of described male part and described the second cavity wall formation through the first equivalent magnetic flux ring of described male part and described the first cavity wall formation and the magnetic field part that described second medium resonator produces.
3. filter according to claim 2, it is characterized in that, described filter also comprises a plurality of transmission cavitys and is vertically installed on a plurality of transmission resonators in described a plurality of transmission cavity, described the first cavity, described a plurality of transmission cavitys and described the second cavity are sequentially communicated with, and make described first medium resonator, described a plurality of transmission resonators and described second medium resonator sequentially carry out signal coupling transmission.
4. filter according to claim 3, it is characterized in that, described first medium resonator and described second medium resonator are transverse electric mode ceramic dielectric resonator, the opposite direction in the magnetic field that described first medium resonator and described second medium resonator produce at one time.
5. filter according to claim 2, is characterized in that, the material of described male part is metal, and described convergence part is unsettled runs through described coupling window.
6. filter according to claim 5, is characterized in that, described the first coupling part, described the second coupling part and described convergence part are one-body molded.
7. filter according to claim 6, is characterized in that, described male part is " Z " type or " S " type.
8. filter according to claim 2, is characterized in that, described the first cavity wall is provided with the first connecting portion, and described the first coupling part is connected with described the first connecting portion; Described the second cavity wall is provided with the second connecting portion, and described the second coupling part is connected with described the second connecting portion.
9. filter according to claim 8, is characterized in that:
Described the first cavity wall is also provided with the first guide groove for coordinating with described the first coupling part, and one end of described the first guide groove is mutually concordant with the opening of described the first cavity, and the other end is provided with described the first connecting portion;
Described the second cavity wall is also provided with the second guide groove for coordinating with described the second coupling part, and one end of described the second guide groove is mutually concordant with the opening of described the second cavity, and the other end is provided with described the second connecting portion.
10. a communication radio frequency device, it is characterized in that, described communication radio frequency device comprises according to the filter described in claim 1～9 any one, described filter is located at the transceiver circuit part of described communication radio frequency device, for signal is selected, described communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
11. 1 kinds of filters, it is characterized in that, comprise the first cavity that interval arranges and is sequentially communicated with, the second cavity, the 3rd cavity and the 4th cavity, and the first medium resonator that is vertically installed on described the first cavity bottom, vertically be installed on the second medium resonator of described the second cavity bottom, vertically be installed on the 3rd dielectric resonator of described the 3rd cavity bottom and be vertically installed on the 4th dielectric resonator of described the 4th cavity bottom, described first medium resonator, described second medium resonator, described the 3rd dielectric resonator and described the 4th dielectric resonator are sequentially realized signal coupling transmission, described filter also comprises:
Coupling window, is located between described the first cavity and described the 4th cavity so that described the first cavity and described the 4th cavity are communicated with;
Male part, run through described coupling window, described male part two ends are connected with described the first cavity wall, the 4th cavity wall respectively, and the two ends of described male part lay respectively at the both sides of the center line of described coupling window, described first medium resonator and described the 4th dielectric resonator three formation, so that described first medium resonator and described the 4th dielectric resonator are realized reversed polarity coupling.
12. filters according to claim 11, it is characterized in that, described male part comprises the first coupling part, the second coupling part and the convergence part that connects described the first coupling part and described the second coupling part, the sidewall of described the first coupling part and described the first cavity is electrically connected, the sidewall of described the second coupling part and described the 4th cavity is electrically connected, and described coupling window is run through in described convergence part;
Wherein, the magnetic field part of described first medium resonator generation passes the second equivalent magnetic flux ring of described male part and described the 4th cavity wall formation through the first equivalent magnetic flux ring of described male part and described the first cavity wall formation and the magnetic field part of described the 4th dielectric resonator generation.
13. filters according to claim 12, it is characterized in that, described first medium resonator and described the 4th dielectric resonator are transverse electric mode ceramic dielectric resonator, the opposite direction in the magnetic field that described first medium resonator and described the 4th dielectric resonator produce at one time.
14. filters according to claim 12, is characterized in that, described the first coupling part, described the second coupling part and described convergence part are one-body molded.
15. 1 kinds of communication radio frequency devices, it is characterized in that, described communication radio frequency device comprises according to the filter described in claim 11～14 any one, described filter is located at the transceiver circuit part of described communication radio frequency device, for signal is selected, described communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
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| CN201210201129.XA CN103515678B (en) | 2012-06-18 | 2012-06-18 | A communication radio frequency device and a filter thereof |
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| CN201210201129.XA CN103515678B (en) | 2012-06-18 | 2012-06-18 | A communication radio frequency device and a filter thereof |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110994086A (en) * | 2019-11-12 | 2020-04-10 | 彭青珍 | 5G communication multilayer dielectric waveguide filter |
| WO2021040212A1 (en) * | 2019-08-30 | 2021-03-04 | 주식회사 케이엠더블유 | Waveguide filter |
| CN112448109A (en) * | 2019-09-02 | 2021-03-05 | 昆明盘甲科技有限公司 | Combining structure of dielectric filter |
| CN113571857A (en) * | 2020-04-28 | 2021-10-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
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| US5781085A (en) * | 1996-11-27 | 1998-07-14 | L-3 Communications Narda Microwave West | Polarity reversal network |
| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
| CN202888358U (en) * | 2012-06-18 | 2013-04-17 | 深圳市大富科技股份有限公司 | Communication radio frequency device and filter of the same |
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| US5781085A (en) * | 1996-11-27 | 1998-07-14 | L-3 Communications Narda Microwave West | Polarity reversal network |
| CN101630768A (en) * | 2009-08-11 | 2010-01-20 | 京信通信系统（中国）有限公司 | Cavity medium filter |
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| WO2021040212A1 (en) * | 2019-08-30 | 2021-03-04 | 주식회사 케이엠더블유 | Waveguide filter |
| CN112448109A (en) * | 2019-09-02 | 2021-03-05 | 昆明盘甲科技有限公司 | Combining structure of dielectric filter |
| CN110994086A (en) * | 2019-11-12 | 2020-04-10 | 彭青珍 | 5G communication multilayer dielectric waveguide filter |
| CN113571857A (en) * | 2020-04-28 | 2021-10-29 | 深圳市大富科技股份有限公司 | Filter and communication equipment |
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| CN103515678B (en) | 2015-07-08 |
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