CN103515678B - 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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- CN103515678B CN103515678B CN201210201129.XA CN201210201129A CN103515678B CN 103515678 B CN103515678 B CN 103515678B CN 201210201129 A CN201210201129 A CN 201210201129A CN 103515678 B CN103515678 B CN 103515678B
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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 transacting 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 is that in microwave transmission, one can excited modes, and its electric field only has cross stream component, and magnetic field then all exists component in all directions.TE mould ceramic dielectric resonator is generally made up 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 recognition of higher band, 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 transmissions route schematic diagram of prior art TE mode filter, Figure 1B is the resonator magnetic direction schematic diagram at a time 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 multiple TE mould ceramic dielectric resonator, for example comprise the first medium resonator 1 on the bottom surface being arranged at intervals at different cavity, second medium resonator 2, 3rd dielectric resonator 3 and the 4th dielectric resonator 4, during work, signal is successively through first medium resonator 1, second medium resonator 2, 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 responding, namely be with outer clutter recognition effect on the low side, do not realize higher Q value.
Please consult Figure 1B further, 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, namely the magnetic direction between any time two resonators is substantially contrary, and causes the electromagnetic field couples that cannot realize between first medium resonator 1 and the 4th dielectric resonator 4 to be transmitted; Furthermore, the magnetic-field component of TE mould ceramic dielectric resonator is difficult to distinguish, is namely difficult to distinguish the electromagnetic field direction between first medium resonator 1 and the 4th dielectric resonator 4, also just cannot realizes its electromagnetic field couples.
The present inventor, through further investigation, through experiment repeatedly to obtain the present invention, achieves the reversed polarity coupling of the magnetic field energy between resonator.
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, to make to 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: provide a kind of filter, this filter comprises spaced 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 to make this first cavity be communicated with this second cavity; 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 that this coupling window, this first medium resonator and this second medium resonator three are formed, and realize reversed polarity be coupled to make this first medium resonator with this second medium resonator.
For solving the problems of the technologies described above, another technical scheme that the embodiment of the present invention adopts is: provide a kind of communication radio frequency device, this communication radio frequency device adopts above-mentioned filter, and the transceiver circuit part of this communication radio frequency device is located at by this filter.This filter is used for selecting signal, 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: provide a kind of filter, this filter comprises interval and arranges and the first cavity be sequentially communicated with, second cavity, 3rd cavity and the 4th cavity, and be vertically installed on the first medium resonator of 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, 3rd dielectric resonator and the 4th dielectric resonator sequentially realize 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 to make this first cavity be communicated with the 4th cavity; 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 that this coupling window, this first medium resonator and the 4th dielectric resonator three are formed, and realize reversed polarity be coupled to make this first medium resonator with the 4th dielectric resonator.
For solving the problems of the technologies described above, another technical scheme that the embodiment of the present invention adopts is: provide a kind of communication radio frequency device, this communication radio frequency device comprises above-mentioned filter, the transceiver circuit part of this communication radio frequency device is located at by this filter, for selecting signal, this communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
The embodiment of the present invention sets up coupling window between spaced cavity, make to be communicated with between two cavitys, be connected with the sidewall of two cavitys respectively by the two ends of male part 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 carrying out coupling by male part, finally achieve the reversed polarity coupling of electromagnetic field and energy.Embodiment of the present invention structure is simple, to achieve between resonator while reversed polarity coupling, is with outer clutter recognition better effects if, 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 used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Figure 1A is the Signal transmissions route schematic diagram of prior art TE mode filter;
Figure 1B is the resonator magnetic direction schematic diagram at a time 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 the embodiment of the present invention provides.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained 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 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 to make this first cavity be communicated with this second cavity; 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 that this coupling window, this first medium resonator and this second medium resonator three are formed, and realize reversed polarity be coupled to make this first medium resonator with this second medium resonator.
The embodiment of the present invention solves between the resonator in prior art two cavitys cannot direct-coupled problem, furthermore, the direction in the magnetic field produced in same time for first medium resonator and second medium resonator is difficult to predict situation about judging, the embodiment of the present invention adopts the mode of coupling window and male part, makes to realize reversed polarity coupling between first medium resonator and second medium resonator.The filter construction of the embodiment of the present invention is simple, to achieve between resonator while reversed polarity coupling, is with outer clutter recognition better effects if, 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 the transceiver circuit part of this communication radio frequency device is located at by this filter.This filter is used for selecting signal, 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, to achieve between resonator while reversed polarity coupling, is with outer clutter recognition better effects if, and possesses higher Q value.
The embodiment of the present invention also provides a kind of filter in addition, this filter comprises interval and arranges and the first cavity be sequentially communicated with, second cavity, 3rd cavity and the 4th cavity, and be vertically installed on the first medium resonator of 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, 3rd dielectric resonator and the 4th dielectric resonator sequentially realize 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 to make this first cavity be communicated with the 4th cavity; 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 that this coupling window, this first medium resonator and the 4th dielectric resonator three are formed, and realize reversed polarity be coupled to make this first medium resonator with the 4th dielectric resonator.
The embodiment of the present invention sets up coupling window between spaced first cavity and the 4th cavity, make to be communicated with between the first cavity and the 4th cavity, be connected with the sidewall of the first cavity with the 4th cavity respectively by the two ends of male part again, and because the two ends of male part lay respectively at the both sides of the center line that this coupling window, first medium resonator and the 4th dielectric resonator three are formed, when the resonator in the first cavity and the 4th cavity produces magnetic field, reversed polarity coupling can be realized.Embodiment of the present invention structure is simple, achieves reversed polarity coupling between resonator, is with outer clutter recognition better effects if, 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, the transceiver circuit part of this communication radio frequency device is located at by this filter, for selecting signal, 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, to achieve between resonator while reversed polarity coupling, is with outer clutter recognition better effects if, and possesses higher Q value.
Hereafter be described in conjunction with concrete accompanying drawing embodiment.
Embodiment one, 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 coupling window 30 that the present embodiment filter includes but not limited to spaced first cavity 10, second cavity 20 and is located between the first cavity 10 and the second cavity 20.
First cavity 10 and the second cavity 20 all can adopt the electric conducting materials such as metal to obtain, and are vertically provided with bottom the first cavity 10 bottom first medium resonator 101, the second cavity 20 and are vertically provided with second medium resonator 201.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 multiple ceramic dielectric block, the Main way in its magnetic field produced 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 that the art personnel understand, do not repeat.It should be noted that, when identical when, first medium resonator 101 is substantially contrary with the direction in the magnetic field that second medium resonator 201 produces at one time.
Coupling window 30 is the passage of connection first cavity 10 and the second cavity 20, specifically, the partial sidewall that first cavity 10 is adjacent with the second cavity 20 bears against mutually and can be one-body molded, coupling window 30 is located in this partial sidewall of bearing against mutually, can realize simple coupling by coupling window 30.
In order to guarantee the coupling effect between first medium resonator 101 and second medium resonator 201 further, coupling window 30 coordinates and is provided with the obtained male part 31 of electric conducting material, male part 31 is through coupling window 30, the two ends of male part 31 are connected with the first cavity 10 sidewall, the second cavity 20 sidewall respectively, and the two ends of male part 31 lay respectively at the both sides of the center line that coupling window 30, first medium resonator 101 and second medium resonator 201 three are formed.
Specifically, male part 31 comprises the first coupling part 311, the convergence part 313 of the second coupling part 312 and connection the first coupling part 311 and the second coupling part 312, preferably, reduce costs to save material, 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, 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, itself and the connected mode between the first cavity 10 and the second cavity 20 are 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, in other words, be similar to the galvanomagnetic effect principle of coil, the the first equivalent magnetic flux ring A formed is coordinated at the sidewall of the first coupling part 311 and the first cavity 10, the plane at the place, direction 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 bottom surface of the first cavity 10, and in another moment, first medium resonator 101 produce magnetic field from the first cavity 10 Open Side Down point to its bottom surface, that is, be similar to the magnetic field of the earth, just when different when, magnetic field exists from sensing " north " pole, " south " pole or points to " south " pole two states from " north " pole, 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 adopt the magnetic flux that the first equivalent magnetic flux ring A is passed in the magnetic field adjusting the generation of first medium resonator 101 in two ways: mode one, the position adjusting the first coupling part 311 adjusts the size of the area of the first equivalent magnetic flux ring A, such as the first coupling part 311 is increased the area of the first equivalent magnetic flux ring A as far as possible near first medium resonator 101; Mode two, because first medium resonator 101 is stronger the closer to the magnetic field intensity of the outline of the ceramic dielectric block of centre, that is, adjusts the distance of the bottom surface of the first coupling part 311 to the first cavity 10 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 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 sidewall of the second cavity 20 and the part base of coupling window 30 coordinate the second equivalent magnetic flux ring B formed, the plane at the place, direction 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 the magnetic field of second medium resonator 201 refers to the associated description of first medium resonator 101, do not repeat them here.The present embodiment can adopt the magnetic flux that the second equivalent magnetic flux ring B is passed in the magnetic field adjusting the generation of second medium resonator 201 in two ways: mode one, the position adjusting the second coupling part 312 adjusts the size of the area of the second equivalent magnetic flux ring B, such as the second coupling part 312 is increased the area of the second equivalent magnetic flux ring B as far as possible near second medium resonator 201; Mode two, because second medium resonator 201 is stronger the closer to the magnetic field intensity of the outline of the ceramic dielectric block of centre, that is, the distance of the bottom surface of the second coupling part 312 to the second cavity 20 is adjusted with the magnetic flux of adjustment 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 in the direction in the magnetic field of first medium resonator 101 and second medium resonator 201: the position residing for the first equivalent magnetic flux ring A and the second equivalent magnetic flux ring B lay respectively at convergence part 313 mutually away from both sides.
Be understandable that, the first coupling part 311, second coupling part 312 and convergence part 313 can be one-body molded, also can be electrically connected by the mode be spirally connected or rivet.
After the present embodiment filter is provided with above-mentioned coupling window 30 and male part 31, its specific works process is as follows:
When carrying out Signal transmissions, the magnetic field part that first medium resonator 101 produces is through the first equivalent magnetic flux ring A and the magnetic field part that second medium resonator 201 produces passes the second equivalent magnetic flux ring B, the magnetic field of the magnetic field of first medium resonator 101 and energy and second medium resonator 201 and energy thereof are coupled part 31 first respectively and absorb, then be coupled by male part 31, and 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, solving between the resonator in prior art first cavity 10 and the second cavity 20 cannot the problem of direct reversed polarity coupling, furthermore, the direction in the magnetic field produced in same time for first medium resonator 101 and second medium resonator 201 is difficult to predict situation about judging, 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 coupling between first medium resonator 101 and second medium resonator 201.The filter construction of the embodiment of the present invention is simple, the while of achieving magnetic-coupled between resonator, is with outer clutter recognition better effects if, and possesses higher Q value.
Embodiment two, refers to the structural representation that Fig. 5 is another embodiment of filter of the present invention.
As previously mentioned, the present embodiment filter includes but not limited to spaced first cavity 40, 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 convergence part 613 of the second coupling part 612 and connection the first coupling part 611 and the second coupling part 612, 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 one, in the scope that the art personnel understand, do not repeat, the present embodiment and embodiment one difference are:
First cavity 40 sidewall is provided with the first connecting portion (not shown) be electrically connected with the first coupling part 611, and the second cavity 50 sidewall is provided with the second connecting portion 502 be electrically connected with the second coupling part 612.
As shown in Figure 5, first connecting portion and the second connecting portion 502 are the fixed platform of projection, it lays respectively at the different both sides of coupling window 60, different both sides refer to the position near any two diagonal angles of the bottom surface being in coupling window 60, namely first medium resonator 401, the both sides of the center line that second medium resonator 501 and coupling window 60 three are formed, different both sides, convergence part 613 are positioned to make the first equivalent magnetic flux ring C and the second equivalent magnetic flux ring D, correspondingly, first coupling part 611 and the second coupling part 612 lay respectively at different both sides, convergence part 613, namely, male part 61 entirety is in " Z " type or " S " type.Furthermore, in the present embodiment, first coupling part 611, second coupling part 612 is in same plane with convergence part 613 and can be parallel with the bottom surface of the first cavity 40 or the second cavity 50, and the bottom surface of the first cavity 40 or the second cavity 50 also can be parallel with the bottom surface of coupling window 60.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.
Conveniently install, the sidewall of the first cavity 40 is also provided with the first guide groove 402 for coordinating with the first coupling part 611, one end of first guide groove 402 is mutually concordant with the opening of the first cavity 40 so that the first coupling part 611 slips in the first guide groove 402 from this end, the other end is provided with the first connecting portion, coordinates the first coupling part 611 make it slide into the first connecting portion place by predetermined track and abut with the first connecting portion with the first guide groove 402.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, one end of second guide groove 503 is mutually concordant with the opening of the second cavity 50 so that the second coupling part 612 slips in the second guide groove 503 from this end, 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 to enter into respectively by the first guide groove 402 and the second guide groove 503 in cavity and after abutting the first connecting portion and the second connecting portion 502 respectively, by the mode being spirally connected, riveting or weld, the first coupling part 611 can be connected with the first connecting portion, also by the mode being spirally connected, riveting or weld, the second coupling part 612 can be connected with the second connecting portion 502.And if the first connecting portion and the second connecting portion 502 adopt the mode of draw-in groove, then the first coupling part 611 and the second coupling part 612 by first guide groove 402 and second guide groove 503 time need produce certain deformation, then recover deformation after entering into draw-in groove, and then can firmly male part 61 be fixed in cavity.
Compared to embodiment one, the present embodiment, by arranging connecting portion and guide groove in the first cavity 40 and the second cavity 50, with further male part 61, thus ensure that the magnetic coupling effect of male part 61.The filter construction of the embodiment of the present invention is simple, to achieve between resonator while reversed polarity coupling, is with outer clutter recognition better effects if, and possesses higher Q value.
Embodiment three, refers to Fig. 6, is the structural representation of an embodiment of filter shown in Fig. 5.
In concrete application, filter includes but not limited to that interval is arranged and the first cavity 71 be sequentially communicated with, second cavity 72, 3rd cavity 73 and the 4th cavity 74, and the first medium resonator be vertically installed on bottom the first cavity 71, vertically be installed on the second medium resonator bottom the second cavity 72, the 4th dielectric resonator being vertically installed on the 3rd dielectric resonator bottom the 3rd cavity 73 and being vertically installed on bottom the 4th cavity 74, signal is successively through the first cavity 71, second cavity 72, 3rd cavity 73 and the 4th cavity 74, by this first medium resonator, this second medium resonator, 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 the second cavity 72 to the three cavity 73 again to the process of the 4th cavity 74, the more transmission cavity being similar to the arrangement of this " it " font and the multiple transmission resonators be arranged in multiple transmission cavity can also be comprised, correspondingly, the order transfer approach of signal also sequentially transmits according to " it " shape, in the process of transmission, any two intervals arrange but are not between the transmission cavity in order transfer approach, as between the first cavity 71 and the 4th cavity 74, by adopting coupling window and male part 81, the reversed polarity coupling between cavity can be realized.
Furthermore, because between the first cavity 71 and the 4th cavity 74, the Signal transmissions coupled modes of intersecting and misplacing are achieved by coupling window and male part 81, when the filter of the embodiment of the present invention is tested, a high inhibition point can be respectively formed on filter response curve passband both sides, make filter larger to the degree of suppression near passband, wherein, two high inhibition points that passband is formed are the transmission zero often said, therefore, the filter of the embodiment of the present invention possesses the outer clutter recognition effect of higher band.
For example, male part 81 comprises the first coupling part 811, second coupling part 812 and convergence part 813, input 821 and output 822, the specific works principle of male part 81 also refers to the associated description of preceding embodiment, and input 821 and output 822 belong to prior art, do not repeat one by one at this.
The present embodiment filter, while realizing the coupling of the reversed polarity between the first cavity 71 and the 4th cavity 74, is with outer clutter recognition better effects if, and is possessed higher Q value.
Embodiment four, refers to the schematic flow sheet that Fig. 7 is the resonator magnetic coupling method of filter of the present invention.
The present embodiment filter comprises spaced first cavity and the second cavity and the first medium resonator be vertically installed in this first cavity and the second medium resonator be vertically installed 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, to make to 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 connects the convergence part of 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, and this coupling window is run through in this convergence part.
In specific works process, the magnetic field part that this first medium resonator produces is through this first equivalent magnetic flux ring and the magnetic field part that this second medium resonator produces passes this second equivalent magnetic flux ring, 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 recognition effect of higher band, its process comprises: arrange multiple transmission cavity and arrange multiple transmission resonator in multiple transmission cavity, and the first cavity, multiple transmission cavity are sequentially communicated with the second cavity; Wherein, first medium resonator, multiple transmission resonator and second medium resonator are sequentially to carry out signal coupling transmission.By the Signal transmissions coupled modes that this first cavity and the second cavity intersection misplace, when the filter of the embodiment of the present invention is tested, a high inhibition point can be respectively formed on filter response curve passband both sides, make filter larger to the degree of suppression near passband, wherein, two high inhibition points that passband is formed are the transmission zero often said, therefore, the filter of the embodiment of the present invention possesses the outer clutter recognition effect of higher band.
Embodiment five, 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 the transceiver circuit part of this communication radio frequency device is located at by this filter.This filter is used for selecting signal, 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 one to embodiment four, in the scope that the art personnel understand, does not repeat.
Refer to the response curve indicatrix that Fig. 8 is 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, being not difficult to find out from Fig. 8, the while that the embodiment of the present invention realizing magnetic-coupled between resonator, is position near 2320MHz and 2360MHz also form two stronger inhibition points at frequency values, namely achieve the outer clutter recognition effect of higher band, thus possess higher Q value.
Apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, 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.
Claims (11)
1. a filter, it is characterized in that, comprise spaced first cavity and the second cavity and be vertically installed on the first medium resonator of described first cavity bottom and be vertically installed on the second medium resonator of described second cavity bottom, described filter also comprises:
Coupling window, is located between described first cavity and described second cavity to make described first cavity be communicated with described second cavity;
Male part, run through described coupling window, described male part two ends are connected with described 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 that described coupling window, described first medium resonator and described second medium resonator three are formed, and realize reversed polarity be coupled to make described first medium resonator with described second medium resonator;
Wherein, described male part comprises the first coupling part, the second coupling part and connects the convergence part of described first coupling part and described second coupling part, the sidewall of described first coupling part and described first cavity is electrically connected, the sidewall of described second coupling part and described second cavity is electrically connected, and described coupling window is run through in described convergence part;
Wherein, the first equivalent magnetic flux ring of being formed through described male part and described first cavity wall of the magnetic field part that produces of described first medium resonator and the magnetic field part that described second medium resonator produces pass the second equivalent magnetic flux ring that described male part and described second cavity wall are formed;
Wherein, described first cavity wall is provided with the first connecting portion, and described first coupling part is connected with described first connecting portion; Described second cavity wall is provided with the second connecting portion, and described second coupling part is connected with described second connecting portion;
Wherein, described first cavity wall is also provided with the first guide groove for coordinating with described first coupling part, and one end of described first guide groove is mutually concordant with the opening of described first cavity, and the other end is provided with described first connecting portion;
Described second cavity wall is also provided with the second guide groove for coordinating with described second coupling part, and one end of described second guide groove is mutually concordant with the opening of described second cavity, and the other end is provided with described second connecting portion.
2. filter according to claim 1, it is characterized in that, described filter also comprises multiple transmission cavity and is vertically installed on the multiple transmission resonators in described multiple transmission cavity, described first cavity, described multiple transmission cavity are sequentially communicated with described second cavity, make described first medium resonator, described multiple transmission resonator and described second medium resonator sequentially carry out signal coupling transmission.
3. filter according to claim 2, it is characterized in that, described first medium resonator and described second medium resonator are transverse electric mode ceramic dielectric resonator, and described first medium resonator is contrary with the direction in the magnetic field that described second medium resonator produces at one time.
4. filter according to claim 1, is characterized in that, the material of described male part is metal, and described convergence part is unsettled runs through described coupling window.
5. filter according to claim 4, is characterized in that, described first coupling part, described second coupling part and described convergence part are one-body molded.
6. filter according to claim 5, is characterized in that, described male part is in " Z " type or " S " type.
7. a communication radio frequency device, it is characterized in that, described communication radio frequency device comprises the filter according to any one of claim 1 ~ 6, the transceiver circuit part of described communication radio frequency device is located at by described filter, for selecting signal, described communication radio frequency device is single multiplexer, duplexer, splitter, mixer or tower amplifier.
8. a filter, it is characterized in that, comprise interval to arrange and the first cavity be sequentially communicated with, second cavity, 3rd cavity and the 4th cavity, and be vertically installed on the first medium resonator of described first cavity bottom, vertically be installed on the second medium resonator of described second cavity bottom, vertically be installed on the 3rd dielectric resonator of described 3rd cavity bottom and be vertically installed on the 4th dielectric resonator of described 4th cavity bottom, described first medium resonator, described second medium resonator, described 3rd dielectric resonator and described 4th dielectric resonator sequentially realize signal coupling transmission, described filter also comprises:
Coupling window, is located between described first cavity and described 4th cavity to make described first cavity be communicated with described 4th cavity;
Male part, run through described coupling window, described male part two ends are connected with described 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 that described coupling window, described first medium resonator and described 4th dielectric resonator three are formed, and realize reversed polarity be coupled to make described first medium resonator with described 4th dielectric resonator;
Wherein, described male part comprises the first coupling part, the second coupling part and connects the convergence part of described first coupling part and described second coupling part, the sidewall of described first coupling part and described first cavity is electrically connected, the sidewall of described second coupling part and described 4th cavity is electrically connected, and described coupling window is run through in described convergence part;
Wherein, the first equivalent magnetic flux ring of being formed through described male part and described first cavity wall of the magnetic field part that produces of described first medium resonator and the magnetic field part that described 4th dielectric resonator produces pass the second equivalent magnetic flux ring that described male part and described 4th cavity wall are formed;
Wherein, described first cavity wall is provided with the first connecting portion, and described first coupling part is connected with described first connecting portion; Described 4th cavity wall is provided with the second connecting portion, and described second coupling part is connected with described second connecting portion;
Wherein, described first cavity wall is also provided with the first guide groove for coordinating with described first coupling part, and one end of described first guide groove is mutually concordant with the opening of described first cavity, and the other end is provided with described first connecting portion;
Described 4th cavity wall is also provided with the second guide groove for coordinating with described second coupling part, and one end of described second guide groove is mutually concordant with the opening of described 4th cavity, and the other end is provided with described second connecting portion.
9. filter according to claim 8, it is characterized in that, described first medium resonator and described 4th dielectric resonator are transverse electric mode ceramic dielectric resonator, and described first medium resonator is contrary with the direction in the magnetic field that described 4th dielectric resonator produces at one time.
10. filter according to claim 8, is characterized in that, described first coupling part, described second coupling part and described convergence part are one-body molded.
11. 1 kinds of communication radio frequency devices, it is characterized in that, described communication radio frequency device comprises the filter described according to Claim 8 ~ 10 any one, the transceiver circuit part of described communication radio frequency device is located at by described filter, for selecting signal, 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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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210201129.XA CN103515678B (en) | 2012-06-18 | 2012-06-18 | A communication radio frequency device and a filter thereof |
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| CN103515678B true CN103515678B (en) | 2015-07-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2021040212A1 (en) * | 2019-08-30 | 2021-03-04 | 주식회사 케이엠더블유 | Waveguide filter |
| CN112448109B (en) * | 2019-09-02 | 2022-05-13 | 昆明盘甲科技有限公司 | Combining structure of dielectric filter |
| CN110994086B (en) * | 2019-11-12 | 2021-03-16 | 江苏永鼎通信有限公司 | 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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| US5608363A (en) * | 1994-04-01 | 1997-03-04 | Com Dev Ltd. | Folded single mode dielectric resonator filter with cross couplings between non-sequential adjacent resonators and cross diagonal couplings between non-sequential contiguous resonators |
| 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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| US5608363A (en) * | 1994-04-01 | 1997-03-04 | Com Dev Ltd. | Folded single mode dielectric resonator filter with cross couplings between non-sequential adjacent resonators and cross diagonal couplings between non-sequential contiguous resonators |
| 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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Address after: 233000 building 4, national financial incubation Industrial Park, 17 Yannan Road, high tech Zone, Bengbu City, Anhui Province Patentee after: Dafu Technology (Anhui) Co., Ltd Address before: 518104, Guangdong, Shenzhen province Baoan District manhole Street oyster road manhole Industrial Company Third Industrial Zone A1, A2, A3 101 and 2 layers, A4 Patentee before: SHENZHEN TATFOOK TECHNOLOGY Co.,Ltd. |