CN109888442A - A kind of four mould medium bandpass filters - Google Patents
A kind of four mould medium bandpass filters Download PDFInfo
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- CN109888442A CN109888442A CN201910038308.8A CN201910038308A CN109888442A CN 109888442 A CN109888442 A CN 109888442A CN 201910038308 A CN201910038308 A CN 201910038308A CN 109888442 A CN109888442 A CN 109888442A
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- microstrip line
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- 239000000758 substrate Substances 0.000 claims abstract description 43
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 19
- 229910052802 copper Inorganic materials 0.000 claims description 19
- 239000010949 copper Substances 0.000 claims description 19
- 239000000463 material Substances 0.000 claims description 9
- 239000000919 ceramic Substances 0.000 claims description 4
- WESWKIRSMKBCAJ-UHFFFAOYSA-N [F].[Fe] Chemical group [F].[Fe] WESWKIRSMKBCAJ-UHFFFAOYSA-N 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 6
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- 238000007493 shaping process Methods 0.000 abstract description 4
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- TVEXGJYMHHTVKP-UHFFFAOYSA-N 6-oxabicyclo[3.2.1]oct-3-en-7-one Chemical compound C1C2C(=O)OC1C=CC2 TVEXGJYMHHTVKP-UHFFFAOYSA-N 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
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- 230000005764 inhibitory process Effects 0.000 description 2
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- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
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- 239000003989 dielectric material Substances 0.000 description 1
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Abstract
The invention discloses a kind of four mould medium bandpass filters, and using single media units as dielectric resonator, cooperation upper substrate loads on its stabilization in metal cavity, to form hybrid resonant；Simultaneously, mixing feed is generated using four microstrip lines and two strip lines to motivate above-mentioned hybrid resonant, the passband of shaping filter, since each microstrip line is different with the load effect of strip line, therefore biggish frequency shift (FS) will not be generated under excitation, so that the bandpass filter with four module features can be realized；Meanwhile be also provided with the first SMA connector and the 2nd SMA connector, can timely receiving and transmitting signal, to make corresponding microstrip line generate excitation.Therefore, the configuration of the present invention is simple, design rationally, are based on single dielectric resonator metal-loaded cavity, the filter with four module features are obtained by the way of microstrip-fed, while the filter also has high quality factor, has good stability.
Description
Technical field
The present invention relates to the communications field, especially a kind of four mould medium bandpass filters.
Background technique
Microwave filter plays irreplaceable important function in a wireless communication system, and the quality of performance is often to whole
The performance of a wireless communication system has direct influence, usually constitutes single mode bandpass filter by basic dielectric resonator,
But limited bandwidth of operation and frequency selectivity unsatisfactory can only be provided, correspondingly, the multiple resonators of coupling occur
Solution, but the shortcomings that this method is to bring biggish overall dimensions and complicated design process, and be able to achieve
Maximum modulus be 3, cause the bandwidth of operation of microwave filter limited.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide a kind of four mould medium bandpass filters, are situated between based on single
Matter resonator metal-loaded cavity makes filter have four module features by the way of microstrip-fed.
In order to make up for the deficiencies of the prior art, technical solution used in the embodiment of the present invention is:
A kind of four mould medium bandpass filters, including substrate, metal cover board, metal cavity, media units and for believing
The first SMA connector and the 2nd SMA connector of number input or output, be provided on the top layer of the substrate the first microstrip line and
Second microstrip line is provided with the first strip line and the second strip line, the bottom of the media units on the side of the media units
Third microstrip line and the 4th microstrip line are provided on face, first microstrip line, one end of third microstrip line are band-like with first
One end of line connects, second microstrip line, the 4th microstrip line one end connect with one end of the second strip line；The medium
Unit and substrate are mounted in metal cavity, and the metal cover board is mounted on metal cavity top, and the media units are set
It is placed on substrate, the one side of the substrate and metal cavity is seamless applying, the first SMA connector and the 2nd SMA connection
Device is all set in metal cavity, and first microstrip line is connected to the first SMA connector, and second microstrip line is connected to
Two SMA connectors.
Further, the media units and substrate integrally connected.
Further, first strip line and the second strip line are silvery strip line.
Further, first microstrip line and the second microstrip line are copper microstrip line.
Further, the third microstrip line and the 4th microstrip line are silvery microstrip line.
Further, layers of copper is covered on the bottom of the substrate.
Further, the copper microstrip line is 50 ohms impedance match microstrip line of copper.
Further, the media units are prepared by ceramic medium material.
Further, the substrate is Teflon substrate.
Further, the metal cover board is mounted at the top of metal cavity through screw or in a manner of fastening.
The one or more technical solutions provided in the embodiment of the present invention, at least have the following beneficial effects: with single
Media units cooperate upper substrate to load on its stabilization in metal cavity, to form mixing as single dielectric resonator
Resonance；Meanwhile mixing feed is generated to motivate above-mentioned hybrid resonant, shaping filter using four microstrip lines and two strip lines
Passband biggish frequency shift (FS) will not be generated under excitation since the load effect of each microstrip line and strip line is different,
To realize the bandpass filter with four module features；Meanwhile it being also provided with and the first microstrip line and the second microstrip line difference
Match the first SMA connector and the 2nd SMA connector of connection, can timely receiving and transmitting signal, to generate corresponding microstrip line
Excitation.Therefore, the configuration of the present invention is simple, design rationally, are easily integrated, and are based on single dielectric resonator metal-loaded cavity, are adopted
The filter with four module features is obtained with microstrip-fed mode, while the filter also has high quality factor, stability
The advantages that good.
Detailed description of the invention
Present pre-ferred embodiments are provided, with reference to the accompanying drawing with the embodiment that the present invention will be described in detail.
Fig. 1 is the schematic perspective view of the embodiment of the present invention；
Fig. 2 is the side structure schematic view of the embodiment of the present invention；
Fig. 3 is the overlooking structure diagram of the embodiment of the present invention；
Fig. 4 is emulation and the test result schematic diagram of the embodiment of the present invention；
Specific embodiment
Microwave filter plays irreplaceable important function in a wireless communication system, and the quality of performance is often to whole
The performance of a wireless communication system has direct influence.Emerging wireless communication technique proposes wireless system tightened up
It is required that the insertion loss for not requiring nothing more than microwave filter is small, cake resistancet is roomy, Out-of-band rejection is high and power capacity is big, it is also uncommon
Hope filter that there is smaller size, lighter weight and lower cost, to realize microwave filter in wireless communication system
Integrated and entire wireless system miniaturization in system；Correspondingly, the dielectric resonator of current high dielectric constant and with multimode
The multi-mode filter of Technology design is just widely used in the fields such as wireless communication, for example, usually by basic dielectric resonator structure
At single mode bandpass filter, but limited bandwidth of operation and frequency selectivity unsatisfactory can only be provided, correspondingly, occurred
The solutions of the multiple resonators of coupling, in the past few years, people are to designing multimode filtering by single resonator
This field of device has also carried out a large amount of research, in existing research achievement, can be tuned by screw, the methods of corner cut come
Realize bimodulus characteristic filter, also have a small amount of document propose realize have three module feature filters method, but this
The shortcomings that method is to bring biggish overall dimensions and complicated design process, and the maximum modulus being able to achieve is 3, is caused micro-
The bandwidth of operation of wave filter is limited.
Based on this ,-Fig. 4 referring to Fig.1, the embodiment provides a kind of four mould medium bandpass filters, including base
It plate 4, metal cover board 1, metal cavity 2, media units 3 and is inputted for signal or the first SMA connector 11 exported and the
Two SMA connectors 12 are provided with the first microstrip line 5 and the second microstrip line 9 on the top layer of the substrate 4, the media units 3
It is provided with the first strip line 6 and the second strip line 8 on side, 7 He of third microstrip line is provided on the bottom surface of the media units 3
4th microstrip line 10, first microstrip line 5, third microstrip line 7 one end connect with one end of the first strip line 6, it is described
Second microstrip line 9, the 4th microstrip line 10 one end connect with one end of the second strip line 8；The media units 3 and substrate 4
It is mounted in metal cavity 2, the metal cover board 1 is mounted on 2 top of metal cavity, and the media units 3 are set to base
On plate 4, the substrate 4 and the one side of metal cavity 2 are seamless applying, the first SMA connector 11 and the 2nd SMA connector
12 are all set in metal cavity 2, and first microstrip line 5 is connected to the first SMA connector 11, and second microstrip line 9 connects
It is connected to the 2nd SMA connector 12.
In the present embodiment, media units 3 can be bonded on substrate 4 by glue, the first SMA connector 11 and second
SMA connector 12 can be mounted on the side of metal cavity 2 by screw；First microstrip line 5 and third microstrip line 7 are with
One end of one strip line 6 connects, it is recognised that the first strip line 6 is perpendicular to the first micro-strip from each line relative mounting location
Line 5 and third microstrip line 7, manufacture so more convenient, and occupied space is little, is also more conducive to make one end of three
It is connected together, the second microstrip line 9, the 4th microstrip line 10 and the second strip line 8 are also so to connect, function and effect phase
Together, it does not repeat, in addition, being mounted on the metal cover board 1 on 2 top of metal cavity, section communication interference can be excluded, mentioned
Communication stability is risen, while reducing internal energy and being consumed to external radiation；
Using single media units 3 as single dielectric resonator, cooperation upper substrate 4 makes its stabilization load on wire chamber
In body 2, to form hybrid resonant, that is, the basic mode TE of dielectric resonator is chosen1δ1The basic mode TM of mould and metal cavity 2110Mould is made
For hybrid resonant operating mode, then dielectric resonator is loaded into metal cavity 2, the internal electric field of metal cavity 2 is interfered, makes
Obtain 2 basic mode TM of metal cavity110Frequency displacement occurs for the resonance frequency of mould, until with dielectric resonator basic mode TE1δ1The resonance frequency of mould
It is close；Later, the first microstrip line 5, the second microstrip line 9, third microstrip line 7 and the 4th microstrip line 10 and the first strip line are utilized
6 and second strip line 8 to generate mixing feed motivate above-mentioned hybrid resonant, the passband of shaping filter, due to microstrip line and
The load effect of strip line is different, therefore will not generate biggish frequency shift (FS) in the case where motivating model identical, so that tool can be realized
There is the bandpass filter of four module features, when the resonance frequency of the frequency departure hybrid resonant mode of input signal, input signal
Any one operating mode of hybrid resonant mode can not be motivated, therefore it is ended, thus the stopband of shaping filter；First
SMA connector 11 and the 2nd SMA connector 12 can timely receiving and transmitting signal, to make each microstrip line generate corresponding excitation, and make institute
It states substrate 4 and the one side of metal cavity 2 is seamless applying, the mounting stability of media units 3 can be promoted, while guaranteeing internal electric field
Stabilization.Therefore, the configuration of the present invention is simple, design rationally, are easily integrated, and are based on single dielectric resonator metal-loaded cavity 2,
The filter with four module features is obtained by the way of microstrip-fed, while the filter also has high quality factor, stabilization
The advantages that property is good.Furthermore it is preferred that keep the first microstrip line 5 identical with the specification of the second microstrip line 9, third microstrip line 7 and
The specification of four microstrip lines 10 is identical, and the first strip line 6 is identical with the specification of the second strip line 8, and design in this way manufactures convenient for matching,
It is able to ascend the stability of filter entirety simultaneously.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the medium
Media units 3 and substrate 4 specifically can be integrally fixed to metal cavity 2 by screw by 4 integrally connected of unit 3 and substrate
On.In the present embodiment, in this way setting the production of media units 3 and substrate 4 can be made easier, be conducive to save manufacture at
This, while can also be improved connective stability between the two.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein described first
Strip line 6 and the second strip line 8 are silvery strip line.In the present embodiment, using silvery strip line, have stable structure,
The advantages that communication performance is excellent.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein described first
Microstrip line 5 and the second microstrip line 9 are copper microstrip line.In the present embodiment, using copper microstrip line, have receiving and transmitting signal steady
Calmly, the advantages that excellent physical properties.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the third
Microstrip line 7 and the 4th microstrip line 10 are silvery microstrip line.In the present embodiment, using silvery microstrip line, there is receiving and transmitting signal
The advantages that stabilization, excellent physical properties.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the substrate
Layers of copper is covered on 4 bottom.In the present embodiment, the purpose for covering copper is the electric conductivity for promoting substrate 4, makes it in internal electric field
With good conductive performance.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the copper
Microstrip line is 50 ohms impedance match microstrip line of copper；In the present embodiment, this is obtained according to inventor's experience, at this
The performance of microstrip line under one impedance matching is preferable, and the impedance matching effect of actually distinct ohm can be slightly different, but overall
Or it to be determined according to the specification of media units 3, substrate 4 and metal cavity 2, this is those skilled in the art
Known to solution, therefore not to repeat here, and preferably, copper 50 ohms impedance match microstrip line a length of 5.7mm, width 1.8mm,
Third microstrip line 7 and 10 length of the 4th microstrip line are 5mm, width 0.2mm, the length of the first strip line 6 and the second strip line 8
It is 8.3mm, width 0.2mm.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the medium
Unit 3 is prepared by ceramic medium material；In this embodiment, it is preferred that the dielectric constant of the material is 16, media units
3 a length of 34.2mm, width 20mm, a height of 8.3mm.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the substrate
4 be Teflon substrate.In the present embodiment, Teflon, that is, polytetrafluoroethylene material is a kind of common materials, has preferable object
Manage stability and expansion, it is preferable that the Rogers RT/Duroid 4003c material that its dielectric material uses with a thickness of 0.813mm
Material, dielectric constant 3.38, a length of 44.6mm of substrate 4, width 27.6mm, a height of 0.813mm.
Further, another embodiment of the present invention provides a kind of four mould medium bandpass filters, wherein the metal
Cover board 1 is mounted on the top of metal cavity 2 by screw or with manner, selects metallic aluminium both to be made
It is standby, it is preferable that a length of 52.6mm of metal cover board 1, width 35.6mm, a height of 3mm, therefore the specification of metal cover board 1 can be right
Setting should be matched, to keep installation between the two to stablize.
- Fig. 4 referring to Fig.1, another embodiment of the present invention additionally provide a kind of four mould medium bandpass filters, including substrate
4, metal cover board 1, metal cavity 2, media units 3 and the first SMA connector 11 and second for inputting or exporting for signal
SMA connector 12 is provided with the first microstrip line 5 and the second microstrip line 9, the side of the media units 3 on the top layer of the substrate 4
It is provided with the first strip line 6 and the second strip line 8 on face, third microstrip line 7 and are provided on the bottom surface of the media units 3
Four microstrip lines 10, first microstrip line 5, third microstrip line 7 one end connect with one end of the first strip line 6, described
Two microstrip lines 9, the 4th microstrip line 10 one end connect with one end of the second strip line 8；The media units 3 and substrate 4 are equal
It is installed in metal cavity 2, the media units 3 are set on substrate 4, and the substrate 4 and the one side of metal cavity 2 are seamless
Fitting, the first SMA connector 11 and the 2nd SMA connector 12 are all set in metal cavity 2, first microstrip line 5
It is connected to the first SMA connector 11, second microstrip line 9 is connected to the 2nd SMA connector 12；The media units 3 and base
4 integrally connected of plate, first strip line 6 and the second strip line 8 are silvery strip line, first microstrip line 5 and second
Microstrip line 9 is copper microstrip line, and the third microstrip line 7 and the 4th microstrip line 10 are silvery microstrip line, the substrate 4
Layers of copper is covered on bottom, the copper microstrip line is 50 ohms impedance match microstrip line of copper, and the media units 3 are situated between by ceramics
Material is prepared, and the substrate 4 is Teflon substrate, and the metal cover board 1 is installed by screw or with manner
On the top of metal cavity 2.
In the present embodiment, referring to Fig. 4, wherein Simulated S11Indicate the simulation result curve of S11 parameter,
Simulated S12Indicate the simulation result curve of S12 parameter, Measured S11Indicate the measured result curve of S11 parameter,
Simulated S12Indicate the measured result curve of S12 parameter；As it can be seen that the result trend of actual measurement and emulation is identical, explanation
Success is feasible when this secondary design, which divides the result of instrument actual measurement under true environment by vector net are as follows: centre frequency is
3.58GHz, relative bandwidth 9.7%, insertion loss is -2.4 ± 0.2dB in free transmission range, and return loss is less than -9dB, on
There are three transmission zeros for lower stopband, and frequency is respectively 3.24GHz, 3.77GHz and 3.98GHz, and the selectivity of circuit is preferable, band
Outer inhibition is able to achieve the inhibition higher than -20dB, and above-mentioned data also demonstrate the advantages of present invention above-mentioned is had.
Presently preferred embodiments of the present invention and basic principle is discussed in detail in the above content, but the invention is not limited to
Above embodiment, those skilled in the art should be recognized that also have on the premise of without prejudice to spirit of the invention it is various
Equivalent variations and replacement, these equivalent variations and replacement all fall within the protetion scope of the claimed invention.
Claims (10)
1. a kind of four mould medium bandpass filters, it is characterised in that: including substrate, metal cover board, metal cavity, media units with
And the first SMA connector and the 2nd SMA connector for inputting or exporting for signal, first is provided on the top layer of the substrate
Microstrip line and the second microstrip line are provided with the first strip line and the second strip line, the medium on the side of the media units
Be provided with third microstrip line and the 4th microstrip line on the bottom surface of unit, first microstrip line, third microstrip line one end with
One end of first strip line connects, second microstrip line, the 4th microstrip line one end connect with one end of the second strip line；
The media units and substrate are mounted in metal cavity, and the metal cover board is given an account of on being mounted at the top of metal cavity
Matter unit is set on substrate, and the one side of the substrate and metal cavity is seamless applying, the first SMA connector and second
SMA connector is all set in metal cavity, and first microstrip line is connected to the first SMA connector, second microstrip line
It is connected to the 2nd SMA connector.
2. a kind of four moulds medium bandpass filter according to claim 1, it is characterised in that: the media units and substrate
Integrally connected.
3. a kind of four moulds medium bandpass filter according to claim 1, it is characterised in that: first strip line and
Two strip lines are silvery strip line.
4. a kind of four moulds medium bandpass filter according to claim 1, it is characterised in that: first microstrip line and
Two microstrip lines are copper microstrip line.
5. a kind of four moulds medium bandpass filter according to claim 1, it is characterised in that: the third microstrip line and
Four microstrip lines are silvery microstrip line.
6. a kind of four moulds medium bandpass filter according to claim 1, it is characterised in that: covered on the bottom of the substrate
There is layers of copper.
7. a kind of four moulds medium bandpass filter according to claim 4, it is characterised in that: the copper microstrip line is copper
Make 50 ohms impedance match microstrip lines.
8. -7 any four mould medium bandpass filter of one kind according to claim 1, it is characterised in that: the media units
It is prepared by ceramic medium material.
9. -7 any four mould medium bandpass filter of one kind according to claim 1, it is characterised in that: the substrate is iron
Fluorine dragon substrate.
10. -7 any four mould medium bandpass filter of one kind according to claim 1, it is characterised in that: the metal cover
Plate is mounted at the top of metal cavity screw or in a manner of fastening.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038308.8A CN109888442B (en) | 2019-01-16 | 2019-01-16 | Four-mode dielectric band-pass filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910038308.8A CN109888442B (en) | 2019-01-16 | 2019-01-16 | Four-mode dielectric band-pass filter |
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| Publication Number | Publication Date |
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| CN109888442A true CN109888442A (en) | 2019-06-14 |
| CN109888442B CN109888442B (en) | 2021-02-02 |
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ID=66926112
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910038308.8A Active CN109888442B (en) | 2019-01-16 | 2019-01-16 | Four-mode dielectric band-pass filter |
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| CN (1) | CN109888442B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563694A (en) * | 2020-11-16 | 2021-03-26 | 中山大学 | Multimode dielectric filter without metal shielding cavity and manufacturing method thereof |
| CN113451721A (en) * | 2021-06-03 | 2021-09-28 | 中山大学 | Dielectric filter based on bottom feed and without metal shielding |
| CN113948835A (en) * | 2021-10-18 | 2022-01-18 | 华南理工大学 | Double-frequency filtering switch based on single four-mode dielectric resonator |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005159597A (en) * | 2003-11-25 | 2005-06-16 | Murata Mfg Co Ltd | Resonator apparatus, filter, duplexer, and communication apparatus |
| CN106711557A (en) * | 2017-02-28 | 2017-05-24 | 华南理工大学 | Four-mode dielectric band-pass filter |
| CN106785253A (en) * | 2016-12-02 | 2017-05-31 | 华南理工大学 | A kind of new three moulds medium bandpass filter |
| CN108649310A (en) * | 2018-04-24 | 2018-10-12 | 南通大学 | A kind of individually controllable double-passband filter based on four mould dielectric resonators |
-
2019
- 2019-01-16 CN CN201910038308.8A patent/CN109888442B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005159597A (en) * | 2003-11-25 | 2005-06-16 | Murata Mfg Co Ltd | Resonator apparatus, filter, duplexer, and communication apparatus |
| CN106785253A (en) * | 2016-12-02 | 2017-05-31 | 华南理工大学 | A kind of new three moulds medium bandpass filter |
| CN106711557A (en) * | 2017-02-28 | 2017-05-24 | 华南理工大学 | Four-mode dielectric band-pass filter |
| CN108649310A (en) * | 2018-04-24 | 2018-10-12 | 南通大学 | A kind of individually controllable double-passband filter based on four mould dielectric resonators |
Non-Patent Citations (1)
| Title |
|---|
| RICHARD V. SNYDER ET AL.: "Suspended Resonators for Filters-Reduced λg Excitation of Evanescent Cavities Using High Dielectric Constant Feedlines", 《IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112563694A (en) * | 2020-11-16 | 2021-03-26 | 中山大学 | Multimode dielectric filter without metal shielding cavity and manufacturing method thereof |
| CN112563694B (en) * | 2020-11-16 | 2023-03-14 | 中山大学 | Multimode dielectric filter without metal shielding cavity and manufacturing method thereof |
| CN113451721A (en) * | 2021-06-03 | 2021-09-28 | 中山大学 | Dielectric filter based on bottom feed and without metal shielding |
| CN113451721B (en) * | 2021-06-03 | 2022-10-14 | 中山大学 | Dielectric filter based on bottom feed and without metal shielding |
| CN113948835A (en) * | 2021-10-18 | 2022-01-18 | 华南理工大学 | Double-frequency filtering switch based on single four-mode dielectric resonator |
| CN113948835B (en) * | 2021-10-18 | 2022-06-14 | 华南理工大学 | Double-frequency filtering switch based on single four-mode dielectric resonator |
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| Publication number | Publication date |
|---|---|
| CN109888442B (en) | 2021-02-02 |
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