CN209232923U - Filter and communication system - Google Patents

Abstract

The utility model relates to a kind of filters, it includes shell, the shell has roof, bottom wall and one or more side walls, the roof, bottom wall and one or more side walls limit internal cavity, multiple resonators are equipped in internal cavity, there is the first space between a pair of adjacent resonator, tune coupling element is installed on one of wall of shell, it is characterized in that, the tune coupling element includes one or more solid dielectric materials and can extend into the first space, to adjust this to the coupled characteristic between adjacent resonator.Filter according to the present utility model can be improved the reliability of filter, and reduce manufacturing cost.In addition, the utility model further relates to a kind of antenna system, the antenna system includes according to filter described in the utility model.

Description

Filter and communication system

Technical field

The utility model is generally related to field of cellular communication systems, more particularly, to suitable for cellular communication Filter in system.In addition, the utility model further relates to a kind of cellular communication system with filter.

Background technique

In cellular communication base stations, filter is used for as a kind of frequency selection device so that penetrating within the scope of certain frequency Frequency signal passes through, and filters out radiofrequency signal and/or noise signal in other frequency ranges.Currently make in cellular communication base stations With various filters, comprising: microstrip filter, interdigital filter, coaxial cavity filter, waveguide filter, pectination line chamber Filter, spiral cavity filter, small-sized lumped wave filter, Ceramic Dielectric Filter, SIR filter etc..

Since coaxial cavity filter is suitble to be mass produced, and cost is also cheaper, therefore, big in cellular communication base stations Mostly use coaxial cavity filter.Moveable tuning spiral shell is usually mounted on one or more walls of coaxial cavity filter Bar, this kind of tuning screw are suitable for after coaxial cavity filter manufacture is completed to each resonant column being mounted in filter Frequency characteristic is adjusted.

Utility model content

Therefore, the purpose of this utility model is to provide the filtering that one kind can overcome at least one defect in the prior art Device and communication system with the filter.

It is according to the present utility model in a first aspect, the utility model provides a kind of filter comprising shell, the shell With roof, bottom wall and one or more side walls.The roof, bottom wall and one or more side walls limit inner chamber Body.Multiple resonators are equipped in internal cavity.There is the first space between a pair of adjacent resonator, shell wherein Tune coupling element is installed on one wall.The tune coupling element includes one or more solid dielectric materials and can protrude into Into the first space, to adjust this to the coupled characteristic between adjacent resonator.

Filter according to the present utility model is advantageous.First, solid dielectric material is manufactured to adjust coupling element not Electric arc can be generated, the reliability of filter is which thereby enhanced；Second, adjust influence of the coupling element to the frequency characteristic of resonator bright It is aobvious to reduce；Third adjusts coupling element especially suitable for compact filter, has widened adjustable extent, provided more adjustings Possibility；4th, the requirement to the accuracy of manufacture is reduced, manufacturing cost is reduced.

In some embodiments, tuned cell, the tuned cell structure are also equipped on one of wall of shell Make the frequency characteristic for adjusting corresponding resonator.

In some embodiments, first space includes: between two resonators at this to adjacent resonator Gap；And/or it is in the gap area below or above；The region in the gap front or behind and/or.

In some embodiments, the tune coupling element includes the bar made of high-molecular compound or ceramics.

In some embodiments, the tune coupling element includes the bar made of polyether-ether-ketone.

In some embodiments, the tuned cell includes bar made of metal.

In some embodiments, the tune coupling element is configured to adjusting rod.

In some embodiments, the tune coupling element be equipped with metal self-locking head, the metal self-locking head structure be with Self-locking mode is fixed therein in the mounting hole on a wall.

In some embodiments, the resonator is respectively provided with first end and the second end opposed therewith, each First wall of the first end of resonator and shell electrically and mechanically, and resonator from first wall towards and this The second opposite wall of first wall extends, wherein there is second space between the end face of the second end of resonator and the second wall, The tuned cell is configured to extend into, preferably be extend into second space in a manner of movable.

In some embodiments, medium module is provided in first space, the medium module, which has to adjust, to be led to Road, the tune coupling element are configured to protrude into, are preferably protruded into the adjusting channel in a manner of movable.

In some embodiments, the expanded range of the tuned cell is less than the second end in the second wall resonator End face locating for the distance between plane.

In some embodiments, the expanded range for adjusting coupling element is greater than the second end in the second wall resonator The distance between plane locating for the end face in portion.

In some embodiments, the expanded range of coupling element is adjusted to be greater than the expanded range of tuned cell.

In some embodiments, adjust the expanded range of coupling element than 2 times of the expanded range of tuned cell, 2.5 times, 3 times, 4 times or 5 times will also grow.

In some embodiments, the resonator is configured to resonant column.

In some embodiments, the resonator substantially parallel with each other extends in internal cavity.

In some embodiments, one or more coupled sections are configured between two adjacent resonators.

In some embodiments, each resonator is equivalent at quarter-wave termination open circuited transmission line or equivalent At half wavelength open end transmission line.

In some embodiments, the filter is configured to a kind of multiplexer in the form of multiport resonant cavity filter Or combiner.

In some embodiments, on the shell of the filter be equipped with multiple connectivity ports, with for receive and/or Send signal.

In some embodiments, the roof and each side wall be integrally formed and/or the bottom wall and side wall integrally It constitutes.

Second aspect according to the present utility model, the utility model provide a kind of filter, with shell, the shell Limit internal cavity.It is equipped with multiple resonators in internal cavity, there is the first space between a pair of adjacent resonator, Tune coupling element is installed in filter, the tune coupling element includes one or more solid dielectric materials and can stretch Enter into the first space, to adjust this to the coupled characteristic between adjacent resonator.

Filter according to the present utility model is advantageous.First, solid dielectric material is manufactured to adjust coupling element not Electric arc can be generated, the reliability of filter is which thereby enhanced；Second, adjust influence of the coupling element to the frequency characteristic of resonator bright It is aobvious to reduce；Third adjusts coupling element especially suitable for compact filter, has widened adjustable extent, provided more adjustings Possibility；4th, the requirement to the accuracy of manufacture is reduced, manufacturing cost is reduced.

In some embodiments, it is also equipped with tuned cell, in filter to adjust corresponding resonator Frequency characteristic.

In some embodiments, first space includes: between two resonators at this to adjacent resonator Gap；And/or it is in the gap area below or above；And/or

Region in the gap front or behind.

In some embodiments, the tune coupling element includes bar made of high-molecular compound or ceramics.

In some embodiments, the tune coupling element includes the bar made of polyether-ether-ketone.

In some embodiments, the tuned cell includes bar made of metal.

In some embodiments, the tune coupling element is configured to adjusting rod.

In some embodiments, the tune coupling element be equipped with metal self-locking head, the metal self-locking head structure be with Self-locking mode is fixed in the mounting hole on filter.

In some embodiments, the resonator is respectively provided with first end and the second end opposed therewith, resonance The shell of the first end of device and filter electrically and mechanically, and between the second end of resonator and the shell of filter Second space is separated, the tuned cell can be extend into second space.

In some embodiments, medium module is provided in first space, the medium module, which has to adjust, to be led to Road, the tune coupling element can protrude into the adjusting channel.

In some embodiments, the expanded range of the tuned cell is less than the second end in the second wall resonator End face locating for the distance between plane.

In some embodiments, the expanded range for adjusting coupling element is greater than the second end in the second wall resonator The distance between plane locating for the end face in portion.

In some embodiments, the expanded range of coupling element is adjusted to be greater than the expanded range of tuned cell.

In some embodiments, adjust the expanded range of coupling element than 2 times of the expanded range of tuned cell, 2.5 times, 3 times, 4 times or 5 times will also grow.

In some embodiments, the resonator is configured to resonant column.

In some embodiments, the resonator substantially parallel with each other extends in internal cavity.

In some embodiments, one or more coupled sections are configured between two adjacent resonators.

In some embodiments, each resonator is equivalent at quarter-wave termination open circuited transmission line or equivalent At half wavelength open end transmission line.

In some embodiments, the filter is configured to a kind of multiplexer in the form of multiport resonant cavity filter Or combiner.

In some embodiments, multiple connectivity ports are equipped on the filter, for receiving and/or sending letter Number.

The third aspect according to the present utility model, the utility model provide a kind of communication system, which is characterized in that described logical Letter system includes according to filter described in the utility model.

Detailed description of the invention

Fig. 1 is the schematic diagram with the communication system of the filter according to the utility model embodiment；

Fig. 2 is schematic diagram of the filter of Fig. 1 when removing roof；

Fig. 3 is perspective view of the filter of Fig. 1 and 2 when removing roof；

Fig. 4 is the perspective view according to the tune coupling element of the utility model embodiment；

Fig. 5 is for 1) all-metal tune coupling element and 2) according to two kinds of situations of the tune coupling element of the utility model embodiment The coefficient of coup between two adjacent resonators is shown about the function curve diagram for adjusting coupling element to protrude into length therebetween.

Specific embodiment

Description specific embodiment of the present utility model that hereinafter reference will be made to the drawings, attached drawing therein show the utility model Several embodiments.It should be understood, however, that the utility model can show in a number of different manners, do not limit to In embodiment as described below；In fact, embodiment as described below is intended to make the disclosure of the utility model more complete, and to Those skilled in the art absolutely prove the protection scope of the utility model.It is to be further understood that embodiment disclosed herein energy It is enough to be combined in various ways, to provide more additional embodiments.

It should be understood that the terminology in specification is only used for description specific embodiment, it is no intended to it is practical to limit this It is novel.All terms (including technical terms and scientific terms) that specification uses unless otherwise defined, all have this field skill The normally understood meaning of art personnel.For the sake of concise and/or is clear, well known function or structure can be no longer described in detail.

Singular " one ", " described " and "the" that specification uses are unless clearly indicate, comprising plural form.Explanation The terminology "include", "comprise" and " containing " that book uses indicate there is claimed feature, but there are one or more for repulsion A other feature.The terminology "and/or" that specification uses includes related any and whole group for listing one or more of item It closes.

In the description, the spatial relationship of "upper", "lower", "left", "right", "front", "rear", "high", " low " etc. is used Diction can illustrate a feature and the relationship of another feature in the accompanying drawings.It should be understood that spatial relationship terminology in addition to comprising It also include the different direction of device in use or operation except orientation shown in the drawings.For example, device in the accompanying drawings reverses When, originally it was described as the feature in other feature " lower section ", was can be described as at this time in " top " of other feature.Device may be used also To orient (be rotated by 90 ° or in other orientation) in other ways, relative space relation will be interpreted accordingly at this time.

It should be understood that in all the appended drawings, identical appended drawing reference indicates identical element.It in the accompanying drawings, is clear The size of Chu Qijian, certain features can be deformed.

The embodiments of the present invention are described more fully now with reference to attached drawing, exemplary implementation is depicted in attached drawing Example.

The tuning performance of the tuning screw used in traditional coaxial cavity filter is limited.Traditional tuning screw tool There is higher adjusting sensitivity, that is, frequency caused by each associated resonant column of the tuning screw close to or away from filter Rate changes greatly, to be easy to generate toning or less stress.In addition, also just because of the higher adjusting of traditional tuning screw is sensitive Degree, the accuracy of manufacture of coaxial cavity filter must be very high.Which again increases the manufacturing cost of coaxial cavity filter and manufactures Difficulty.

In addition, under many applicable cases, in order to reduce the windage etc. that weight, reduction material cost and reduction are subject to, Wish coaxial cavity filter small volume.However, the size with coaxial cavity filter reduces, the space in filter, It may also be reduced therewith including the available mobile space of tuning screw.In addition, when tuning screw is too close to metal resonant column, There may be electric arcs, so as to damage filter.

Fig. 1 shows the schematic plan of the communication system of the filter with good grounds the utility model embodiment.Such as Shown in Fig. 1, communication system includes filter 1, can be a kind of two-way three port duplexes device in this example.Filter 1 has There is shell, the shell includes roof 15, bottom wall 19 and multiple side walls (i.e. rear wall 2, antetheca 5, left wall 17 and right wall 18).From filter It is extended with first port 3 and second port 4 on the rear wall 2 of wave device 1, is extended with third port 6 from its antetheca 5.First port 3 It can be connected via coaxial cable 8 with the sending port 12 of communication equipment 11 (such as radio), second port 4 can be via same Shaft cable 9 is connected with the receiving port 13 of communication equipment 11, and third port 6 can be via the radiation of coaxial cable 7 and antenna Element 10 is connected.Filter 1 is able to achieve the radio frequency transmission between the sending port 12 and radiating element 10 of communication equipment 11 Path and the radio frequency transmission path between the receiving port 13 and radiating element 10 of communication equipment 11 are isolated, and at the same time permitting Perhaps the radio frequency transmission between sending port 12 and the radiating element 10 of antenna and the radiation element in receiving port 13 and antenna Radio frequency transmission between part 10.

In other embodiments, filter 1 also may include additional port to realize multiplexer, triplexer, group Clutch etc..For example, the filter of embodiment according to the present utility model may include four or more port, it is used for filter 1 is electrically connected to other external equipments.

In the present example, each port in first port 3, second port 4 and third port 6 includes coaxially connecting Port is connect, is consisted of for receiving coaxial cable.The center conductor of every coaxial cable 7,8,9 can be by welding It is electrically connected on the resonator in filter 1, the outer conductor of every coaxial cable 7,8,9 can then be electrically connected by welding It is connected on the shell 14 of filter 1.It is thus achieved that from communication equipment 11 via filter 1 to the radiofrequency signal of radiating element 10 Transmission connection or in turn.

Fig. 2-4 shows the filter 1 according to the utility model embodiment together with the tune coupling element 16 being installed therein With tuned cell 30.Specifically, the schematic diagram Fig. 2 shows filter 1 when removing roof 15；Fig. 3 shows filter 1 and exists Remove perspective view when roof 15；And it includes tune coupling in filter 1 that Fig. 4, which is shown according to the utility model embodiment, Close the perspective view of element 16.

As shown in figures 2-3, filter 1 includes shell 14 comprising roof 15, bottom wall 19 and four side walls are (respectively Rear wall 2, antetheca 5, left wall 17 and right wall 18).Although roof 15 and bottom wall 19 are shown in Fig. 2 with individual component.But it can be with Understand, in other embodiments, at least one of roof 15 and bottom wall 19 can in side wall 2,5,17,18 at least Some side walls are integrally formed, such as pass through die casting.It is equipped with first port 3 and second port 4 on rear wall 2, is equipped on antetheca 5 Third port 6.Each wall limits an internal cavity 20.Multiple resonators 21, each resonator are arranged in internal cavity 20 21 substantially parallel with each other arrange.

The internal cavity 20 is divided into left chamber 22 and right chamber 23, and the resonator 21 of the first subset is in left chamber 22 In, the resonator 21 of second subset is in right chamber 23.The resonator in region between left chamber 22 and right chamber 23 21 have receptacle 24, with for receiving the center conductor of coaxial cable 7, so as to form from filter 1 to radiating element 10 Bi-directional RF transmission path.In addition, in left chamber 22 there is receptacle 25 on the resonator 21 in left side, for receiving The center conductor of coaxial cable 8, so as to form from the sending port 12 of communication equipment 11 to the radio frequency transmission road of filter 1 Diameter.In right chamber 23, there is receptacle 26 on the resonator 21 on right side, with for receiving the center conductor of coaxial cable 9, from And form the radio frequency transmission path of the receiving port 13 from filter 1 to communication equipment 11.Radiofrequency signal can be from logical as a result, The sending port 12 of letter equipment 11 is transmitted to radiation element via coaxial cable 8, the left chamber 22 of filter 1 and coaxial cable 7 Part 10.Similarly, radiofrequency signal also can be from radiating element 10 via coaxial cable 7, the right chamber 23 of filter 1 and coaxial Cable 9 is transmitted to the receiving port 13 of communication equipment 11.

By Fig. 2-3 as it can be seen that resonator 21 is configured to resonant column.Each resonant column arranges with being separated from each other, each resonant column that This extends from antetheca 5 towards rear wall 2 in parallel.There is the first space 27 between a pair of adjacent resonator 21.Each resonator 21 are respectively provided with first end 21' and the second end 21 " opposed with first end 21'.Before first end 21' and shell 14 Wall 5 electrically and mechanically, and extends from antetheca 5 towards rear wall 2.The end face of the second end 21 " of resonator 21 with The distance at interval of rear wall 2.There is second space 28 between the end face and rear wall 2 of the second end 21 ".In present example In, each resonator 21 can be equivalent at quarter-wave termination open circuited transmission line.It should be noted that in the disclosure " the One space 27 " is directed not only to the gap between a pair of adjacent resonator 21, and is related to above the gap until top Wall 15 and below the gap until the region of bottom wall 19.In the disclosure " second space 28 " be directed not only to resonator 21 with Gap between rear wall 2, and be related to above the gap until roof 15 and below the gap until bottom wall 19 Region.

It is mountable in each mounting hole 29 by Fig. 2-3 as it can be seen that having multiple mounting holes 29 on the rear wall 2 of filter 1 Regulating element.The mounting hole 29 of first subset is aligned with corresponding resonator 21, and in the every of the mounting hole of the first subset 29 It is mountable in a mounting hole to have adjustable (such as movable) tuned cell 30, for adjusting in corresponding resonator 21 Frequency characteristic.Often close to or away from associated resonator 21, the resonant frequency point of resonator 21 itself can produce tuned cell 30 Raw corresponding change.Other mounting holes 29 form the mounting hole 29 of second subset, between these mounting holes and adjacent resonators 21 Corresponding first space 27 is aligned, and in each mounting hole 29 of the mounting hole of second subset 29 it is mountable have it is adjustable (such as movable) tune coupling element 16, for adjusting the coupled characteristic between adjacent resonator 21.Adjust coupling element 16 often close to or away from the first space 27, and the coupling between the resonator 21 adjacent with first space 27 can generate corresponding change.

In the present example, tuned cell 30 is configured to metal tuning plug, such as aluminium tuning plug, adjusts 16 structure of coupling element As be made of the solid dielectric material with high dielectric constant, such as bar made of polyether-ether-ketone (PEEK).At it In its embodiment, tuned cell 30 and coupling element 16 is adjusted also to be configured to other materials (such as other high-molecular compounds Material or ceramics), the regulating parts of other forms.

In addition, as it can be seen that coupled section can be equipped between every a pair of of adjacent resonators 21 in chamber 22,23 from Fig. 2-3 35.Each coupled section 35 can be integrally formed with resonator 21 and can connect two adjacent resonators 21.These couplings Section 35 can also improve the coupling performance between a pair of adjacent resonator 21 in a predefined way.Adjust coupling element 16 can be with Adjustable mode improves the coupling performance between a pair of adjacent resonator 21.

Referring to fig. 4, the perspective view of the tune coupling element 16 according to the utility model embodiment is shown.As shown in figure 4, The first end of coupling element 16 is adjusted to be equipped with a metal self-locking head 32.Receiving portion is equipped in one end of metal self-locking head 32 33, PEEK bars 31 (or other nonmetallic bars) can be embedded in the receiving portion 33 of metal self-locking head 32 using pressing mold mode, and It is tightly engaged into together with metal self-locking head 32.The metal self-locking head to work as shielding part is beneficial to prevent RF energy spoke It is mapped to outside shell 14, to reduce energy loss, and reduces influence of the filter 1 to external equipment.Tuned cell 30 Metal self-locking head 32 can also be similarly configured with together with the PEEK bar being inserted into its receiving portion.

Metal self-locking head 32 has external thread part 34, which is configured to be fixed on mounting hole in self-locking mode In 29.Carry out fastening screw therefore without nut is arranged outside wall as prior art.Therefore the filter 1 of the utility model Space has been saved, installation process is also simplified.

In addition, it can be seen in figure 3 that coupling element 16 is respectively adjusted to have in filter 1 in corresponding first space 27 Different development lengths, technical staff can design the material and shape (example for adjusting coupling element 16 based on emulation and test data Such as length, cross section) parameter, to meet specific application scenarios.

Fig. 5 for 1) all-metal tune coupling element and 2) according to the tune coupling element 16 of the utility model embodiment show with The coefficient of coup of filter 1 being typically designed in the compact type filter of form between two adjacent resonators is coupled about tune Element protrudes into the function curve diagram of length therebetween.In the curve graph of Fig. 5, abscissa, which is shown, adjusts coupling element 16 from rear wall 2 extension elongations (ignoring length of the PEEK bar 31 in receiving portion 33 herein), ordinate shows two adjacent resonance The coefficient of coup between device 21.

Using the tune coupling element with metallic rod, the coefficient of coup is extended further into tune coupling element The internal cavity of filter and monotonic increase.Metallic rod adjusting sensitivity with higher can be learnt from Fig. 5.In other words It says, the coefficient of coup curve of the tune coupling element with metallic rod has higher slope, one unit length of every stretching, coupled systemes Several variable quantities is larger.The relatively top adjustment sensitivity of tune coupling element with metallic rod is usually unfavorable: first, work as resonance After the completion of device 21 manufactures, the basic frequency characteristic of filter 1 has been set, and the adjusting in later period, especially coupling adjusting are only needles Fine tuning that foozle and practical application scene are implemented rather than coarse adjustment, higher adjusting sensitivity make debugging difficulty It increases, is easy to cause toning or less stress；Second, higher adjusting sensitivity proposes the accuracy of manufacture of filter 1 higher It is required that once the accuracy of manufacture is unable to satisfy requirement, regulation performance may have a greatly reduced quality.

In addition, the length that metallic rod can protrude into 1 internal cavity 20 of filter is extremely limited.In the present example, golden The stretching range for belonging to bar is limited only to second space 28, and metallic rod can protrude into inside in an exemplary embodiment The maximum extension elongation of cavity is 12mm.If metallic rod extends further into internal cavity, particularly extend into the first space 27 It is interior, then at least two problems can be caused: firstly, since the structure of filter 1 is more compact, the interval between each resonator 21 It is smaller, when metallic rod is got too close to adjacent resonator 21, it is easy to produce electric arc, this can seriously damage filter；Its It is secondary, if metallic rod, too close to resonator 21, metallic rod can also affect on the frequency characteristic of single resonator 21 for example Resonant frequency point, so that debugging effect is run counter to desire.

Using the tune coupling element 16 with PEEK bar, the coefficient of coup protruding into PEEK bar at the beginning And increase, it protrudes further into the internal cavity 20 of filter 1 and reduces then as PEEK bar.In the example of hgure 5, when When the built-in length of PEEK bar is 12mm, PEEK bar initially enters the first space 27.Since the dielectric constant of PEEK bar is greater than sky The dielectric constant of gas, it is dielectric equivalent between two adjacent resonators 21 after PEEK bar enters the first space 27 Dielectric constant becomes larger, and thus influences the coupling performance between a pair of adjacent resonator 21.It can learn that PEEK bar exists from Fig. 5 There is lesser adjusting sensitivity in first space 27.In other words, the characteristic slope of PEEK bar is more gentle, every stretching One unit length, the variable quantity of the coefficient of coup are smaller.The application of PEEK bar can bring a series of advantage: first, in resonance Electric arc will not be generated between device 21 and PEEK bar, therefore PEEK bar can be extend into the first space 27, which thereby enhance filtering The reliability of device 1；Second, PEEK bar will not significantly influence the frequency characteristic such as resonant frequency point of single resonator 21； Third, in compact space, the extended length of PEEK bar is obviously extended.From fig. 5, it is seen that PEEK bar is most Big extension elongation can achieve 32mm, three when this is almost metallic rod times.Theoretically, the expanded range of the PEEK bar can be from Second wall, which rises, extends up to the termination of the first space 28 along the extending direction of PEEK bar.Thus widened adjust coupling element 16 can Range is adjusted, more adjustment possibilities are provided；4th, reduce the requirement to the accuracy of manufacture, reduce manufacturing cost (such as In metallic rod, it is desirable that manufacturing tolerance should be maintained at ± 0.01mm, and in metallic rod, then require manufacturing tolerance should be maintained at ± 0.1mm)。

It should be noted that filter 1 can have any appropriate structural form for use as any kind of filter (for example, duplexer, combiner, triplexer, bandstop filter, bandpass filter, low-pass filter, high-pass filter etc.) and It can have any design appropriate, therefore be not limited to the configuration of exemplary description in the utility model embodiment.Resonance Any suitable quantity of device is also contained in the scope of the utility model.It is furthermore possible to vary the design shape of single resonator Formula.Each resonator can be aligned with form of straight lines or is not aligned with form of straight lines, and between adjacent and/or non-adjacent resonators It can have or not have direct electrical connection.Similarly, in other embodiments, filter 1 can have any side N structure Type, such as three configuration, pentagon configuration, hexagonal configuration etc. in configuration, four.In addition, filter 1 can also have arc Wall.

Similarly, the configuration of regulating element can be multiplicity, it is not limited to exemplary in the utility model embodiment The configuration of description.In other embodiments, it adjusts coupling element 16 and/or tuned cell 30 to can have arbitrary configuration, for example justify Cylindricality, prismatic, pyramid, step etc..

In other embodiments, resonator 21 can also be from any part of shell, towards another position of shell Extend.Such as some or all of resonators 21 can be from the bottom wall of filter 1 (or roof), towards the top of filter 1 Wall (or bottom wall) extends.In this case, tuned cell 30 and tune coupling element 16 can be set at roof (or bottom wall) On.

In other embodiments, mountable in the first space 27 to have medium instead of being filled with the first space 27 of air Module, which can have the dielectric constant higher than air, and the medium module can have and adjust channel, the tune Section channel can for example be matched with the size for adjusting the bar of coupling element 16.Adjust coupling element 16 that can protrude into the adjusting channel as a result, It is interior, to adjust the coupled characteristic between adjacent resonators 21.

Similarly, medium module can also be installed in second space 28, which can have higher than air Dielectric constant, and the medium module can have adjust channel, which can for example be matched with tuned cell 30 Size.Tuned cell 30 can protrude into the adjusting channel as a result, to adjust the frequency characteristic of corresponding resonator 21.

Although being described in detail by some specific embodiments of the example to the disclosure, the skill of this field Art personnel it should be understood that above example merely to be illustrated, rather than in order to limit the scope of the present disclosure.It is disclosed herein Each embodiment can in any combination, without departing from spirit and scope of the present disclosure.It is to be appreciated by one skilled in the art that can be with A variety of modifications are carried out without departing from the scope and spirit of the disclosure to embodiment.

Claims (42)

1. a kind of filter comprising shell, the shell have roof, bottom wall and an one or more side wall, the roof, Bottom wall and one or more side walls limit internal cavity, and multiple resonators are equipped in internal cavity, a pair of adjacent There is the first space between resonator, tune coupling element is installed on one of wall of shell, which is characterized in that the tune Coupling element includes one or more solid dielectric materials and can extend into the first space, to adjust this to adjacent Coupled characteristic between resonator.

2. filter according to claim 1, which is characterized in that be also equipped with tuning member on one of wall of shell Part, the tuned cell are configured to adjust the frequency characteristic of corresponding resonator.

3. filter according to claim 1, which is characterized in that first space includes:

Gap between this two resonator to adjacent resonator；And/or

In the gap area below or above；And/or

Region in the gap front or behind.

4. filter according to claim 1, which is characterized in that the tune coupling element include by high-molecular compound or Bar made of ceramics.

5. filter according to claim 1, which is characterized in that the tune coupling element includes made of polyether-ether-ketone Bar.

6. filter according to claim 2, which is characterized in that the tuned cell includes bar made of metal.

7. filter according to claim 1, which is characterized in that the tune coupling element is configured to adjusting rod.

8. filter according to claim 1, which is characterized in that the tune coupling element is equipped with metal self-locking head, described Metal self-locking head structure is to be fixed therein in the mounting hole on a wall in self-locking mode.

9. filter according to claim 2, which is characterized in that the resonator is respectively provided with first end and right therewith First wall of the second end set, the first end of each resonator and shell electrically and mechanically, and resonator from First wall, which rises towards second wall opposite with first wall, to be extended, wherein the end face of the second end of resonator and second There is second space, the tuned cell is configured to extend into second space in a manner of movable between wall.

10. filter according to claim 1, which is characterized in that it is provided with medium module in first space, it is described Medium module, which has, adjusts channel, and the tune coupling element is configured to protrude into the adjusting channel in a manner of movable.

11. filter according to claim 9, which is characterized in that the expanded range of the tuned cell is less than second The distance between plane locating for the end face of the second end of wall resonator.

12. filter according to claim 9, which is characterized in that the expanded range for adjusting coupling element is greater than the The distance between plane locating for the end face of the second end of two wall resonators.

13. filter according to claim 9, which is characterized in that the expanded range of coupling element is adjusted to be greater than tuned cell Expanded range.

14. filter according to claim 9, which is characterized in that adjust the expanded range of coupling element than tuned cell 2 times of expanded range will also be grown.

15. filter according to claim 1, which is characterized in that the resonator is configured to resonant column.

16. filter according to claim 1, which is characterized in that the resonator is substantially parallel with each other in inside Extend in cavity.

17. filter according to claim 9, which is characterized in that be configured with one between two adjacent resonators Or multiple coupled sections.

18. filter according to claim 1, which is characterized in that each resonator is equivalent at quarter-wave termination Open circuited transmission line is equivalent at half wavelength open end transmission line.

19. filter according to claim 1, which is characterized in that the filter is configured to one kind with multiport resonance The multiplexer or combiner of cavity filter form.

20. filter according to claim 19, which is characterized in that be equipped with multiple connections on the shell of the filter Port, for receiving and/or sending signal.

21. filter according to claim 1, which is characterized in that the roof and each side wall are integrally formed, and/or The bottom wall and side wall are integrally formed.

22. a kind of filter, with shell, the shell limits internal cavity, which is characterized in that sets in internal cavity There are multiple resonators, there is the first space between a pair of adjacent resonator, tune coupling element, institute are installed in filter It states and coupling element is adjusted to include one or more solid dielectric materials and can extend into the first space, to adjust this to phase Coupled characteristic between adjacent resonator.

23. filter according to claim 22, which is characterized in that tuned cell is also equipped in filter, so as to Adjust the frequency characteristic of corresponding resonator.

24. filter according to claim 22, which is characterized in that first space includes:

Gap between this two resonator to adjacent resonator；And/or

In the gap area below or above；And/or

Region in the gap front or behind.

25. filter according to claim 22, which is characterized in that the tune coupling element include high-molecular compound or Bar made of ceramics.

26. filter according to claim 22, which is characterized in that the tune coupling element includes being made of polyether-ether-ketone Bar.

27. filter according to claim 23, which is characterized in that the tuned cell includes bar made of metal.

28. filter according to claim 22, which is characterized in that the tune coupling element is configured to adjusting rod.

29. filter according to claim 28, which is characterized in that the tune coupling element is equipped with metal self-locking head, institute Stating metal self-locking head structure is in the mounting hole being fixed on filter in self-locking mode.

30. filter according to claim 23, which is characterized in that the resonator is respectively provided with first end and therewith The shell of opposed the second end, the first end of resonator and filter electrically and mechanically, and the second of resonator End is spaced apart second space with the shell of filter, and the tuned cell can be extend into second space.

31. filter according to claim 22, which is characterized in that be provided with medium module in first space, institute Stating medium module has adjusting channel, and the tune coupling element can protrude into the adjusting channel.

32. filter according to claim 30, which is characterized in that the expanded range of the tuned cell is less than second The distance between plane locating for the end face of the second end of wall resonator.

33. filter according to claim 30, which is characterized in that the expanded range for adjusting coupling element is greater than the The distance between plane locating for the end face of the second end of two wall resonators.

34. filter according to claim 30, which is characterized in that the expanded range of coupling element is adjusted to be greater than tuned cell Expanded range.

35. filter according to claim 30, which is characterized in that adjust the expanded range of coupling element than tuned cell 2 times of expanded range will also be grown.

36. filter according to claim 22, which is characterized in that the resonator is configured to resonant column.

37. filter according to claim 22, which is characterized in that the resonator is substantially parallel with each other in inside Extend in cavity.

38. filter according to claim 30, which is characterized in that be configured with one between two adjacent resonators Or multiple coupled sections.

39. filter according to claim 22, which is characterized in that each resonator is equivalent at quarter-wave termination Open circuited transmission line is equivalent at half wavelength open end transmission line.

40. filter according to claim 22, which is characterized in that the filter is configured to one kind with multiport resonance The multiplexer or combiner of cavity filter form.

41. filter according to claim 40, which is characterized in that multiple connectivity ports are equipped on the filter, For receiving and/or sending signal.

42. a kind of communication system, which is characterized in that the communication system includes according to claim 1 to filter described in one of 41 Wave device.