CN102044730B - Transverse magnetic (TM) mode dielectric filter - Google Patents
Transverse magnetic (TM) mode dielectric filter Download PDFInfo
- Publication number
- CN102044730B CN102044730B CN201010574305.5A CN201010574305A CN102044730B CN 102044730 B CN102044730 B CN 102044730B CN 201010574305 A CN201010574305 A CN 201010574305A CN 102044730 B CN102044730 B CN 102044730B
- Authority
- CN
- China
- Prior art keywords
- screw
- mould dielectric
- magnesium
- dielectric resonator
- filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Control Of Motors That Do Not Use Commutators (AREA)
Abstract
The invention relates to a transverse magnetic (TM) mode dielectric filter. The filter comprises a metal resonant cavity, a cover plate, a tuning screw and a TM mode dielectric resonator, wherein the TM mode dielectric resonator is fixed in the metal resonant cavity by a screw. The filter is characterized in that the screw rod part of the screw passes through a positioning hole of the TM mode dielectric resonator and then is screwed down at the bottom or on the side wall of the metal resonant cavity; the screw rod part of the screw is not contacted with the wall of the positioning hole; and a transition gasket for separating the head of the screw from the end face of the positioning hole of the TM mode dielectric resonator is arranged between the head and the end face. The filter adopts the transition gasket with high Q value and low dielectric constant to separate the TM mode dielectric resonator from the screw so that the head of the screw is contacted with the material with high Q value and low dielectric constant and reduction of the Q value of the material can not affect the Q value of the whole TM mode dielectric resonator, thus solving the problem that the TM mode dielectric resonator is fixed by the metal screw.
Description
Technical field
The invention belongs to passive antenna feeder device, be specifically related to TM mould dielectric filter.
Background technology
For a long time, filter plays an important role always in the processing of electronic signal, and it has the signal that filters frequency of utilization and the function that suppresses interference signal.Fast development along with microwave wireless communication, the resource of frequency range in short supply, the performance of filter and volume have been proposed to more and more higher requirement, and traditional wire chamber filter can not meet these requirements, so want improve the property of ripple device and reduce its volume by TM mould dielectric resonator.
Traditional TM mould dielectric filter (referring to Fig. 1), the installation of its resonator is all by burning after silver in resonator one end, then with wire chamber the method by welding to be installed to filter (duplexer) inner.But because the coefficient of expansion of ceramic resonator differs greatly with metal, the reliability of this installation method is very poor, after changing by high low temperature, resonator just there will be the phenomenon of fracture, filter (duplexer) was lost efficacy, therefore, above-mentioned this TM mould dielectric filter (duplexer) is difficult to promote on market.
The another kind of installation method of resonator, is exactly directly by metallic screw, to fix TM mould dielectric resonator, but due to the introducing of metallic screw, the Q value of TM mould medium is sharply declined, with common metal chamber ratio, there is no advantage, be even inferior to common metal chamber, so cannot apply yet.Finally also has a kind of fixing means, just adopt plastic screw to fix TM mould dielectric resonator, because the loss of general plastics is large, insufficient strength, also can cause that Q value declines and the not good situation of frequency stability, this also determined its cannot be on market large-area applications.
Summary of the invention
The object of the invention is the deficiency existing in order to solve above-mentioned background technology, propose a kind ofly can directly with metallic screw, fix the dielectric filter of TM mould dielectric resonator, its Q value that can not cause TM mould dielectric resonator is declined, to improve the reliability of TM mould dielectric resonator.
For achieving the above object, the present invention adopts following technical scheme: TM mould dielectric filter, comprise Metal cavity, cover plate, tuning screw and TM mould dielectric resonator, described TM mould dielectric resonator is fixed by screws in Metal cavity, it is characterized in that, the screw mandrel of described screw is partly tightened on the bottom or sidewall of Metal cavity through the location hole of TM mould dielectric resonator, the screw mandrel part of screw does not contact with above-mentioned location hole hole wall, between the head of described screw and the location hole end face of TM mould dielectric resonator, is provided with the transition packing ring that the two is separated.
Preferably, the Q*F value of this transition packing ring is 50000～700000, and dielectric constant is 2～25, and wherein F is frequency (GHz).
In such scheme, the preferred 1.5-5mm of described transition gasket thickness, optimum thickness is 3mm.
In such scheme, described transition packing ring can adopt the high Q dielectric materials of aluminium oxide, zinc silicate, magnesium silicate, magnesium-niobate, zinc aluminate, aluminium titanium zinc, artificial schellite, calcium zinc tantalum titanium, magnesium barium tungstate, tantalic acid magnesium, barium copper nickel acid yttrium, barium magnesium tungsten titanium, barium zincic acid yttrium, barium zinc-copper acid yttrium niobium, cobalt titanate magnesium, magnesium titanate, magnesium tantalum titanium material or its compound institute level one-tenth.
In such scheme, described TM mould dielectric filter comprises band pass filter, band resistance filter.
The present invention finds a kind of high Q value, and the transition packing ring of low-k directly contacts with TM mould dielectric resonator, and then contact this transition packing ring by metallic screw by it, and TM mould dielectric resonator is fixed.Due to what touch with screw, be high Q value, the material of low-k, the decline of its Q value can not have influence on the Q value of whole TM mould dielectric resonator, thereby has solved the problem that TM mould dielectric resonator is installed with metallic screw.
The present invention is by introducing after new material and mounting means, when making directly to fix TM mould dielectric resonator with metallic screw, the Q value that can not cause TM mould dielectric resonator declines, thereby has improved the reliability of TM mould dielectric resonator, has given full play to the advantage of TM mould.
Accompanying drawing explanation
The existing typical TM mould dielectric filter resonator fixed structure profile of Fig. 1;
TM mould dielectric filter resonator fixed structure profile described in Fig. 2 the present embodiment.
In the drawings, 1-Metal cavity, 2-cover plate, 3-tuning screw, 4-TM mould dielectric resonator, 5-screw, 6-transition packing ring, 7-locking nut.
Embodiment
TM mould dielectric filter described in the present embodiment as shown in Figure 2, comprise Metal cavity 1, cover plate 2, tuning screw 3 and TM mould dielectric resonator 4, described TM mould dielectric resonator is fixed in Metal cavity by screw 5, concrete fixed form is: the screw mandrel of screw 5 is partly tightened in the bottom of Metal cavity 1 through the location hole of TM mould dielectric resonator, also can be tightened on sidewall.The screw mandrel part of screw 5 does not contact with above-mentioned location hole hole wall.Between the location hole upper surface of the head of described screw 5 and TM mould dielectric resonator, be provided with transition packing ring 6, the Q*F value of this transition packing ring is 50000～700000, and dielectric constant is 2～25, and wherein F is frequency (GHz).
The preferred 1.5-5mm of transition packing ring 6 thickness, optimum thickness is 3mm.Transition packing ring can adopt aluminium oxide, zinc silicate, magnesium silicate, magnesium-niobate, zinc aluminate, aluminium titanium zinc, artificial schellite, calcium zinc tantalum titanium, magnesium barium tungstate, tantalic acid magnesium, barium copper nickel acid yttrium, barium magnesium tungsten titanium, barium zincic acid yttrium, barium zinc-copper acid yttrium niobium, cobalt titanate magnesium, magnesium titanate, magnesium tantalum titanium material or the integrated high Q dielectric materials of its compound to make.The present embodiment can extend to other TM mould dielectric filters of realizing by this mounting means, comprises band pass filter, band resistance filter.
Cover plate 5 described in the present embodiment covers on Metal cavity 1, and tuning screw 3 use locking nuts 7 are fixing on the cover board, and the position of tuning screw 3 is corresponding with TM mould dielectric resonator 4.
TM mould dielectric filter of the present invention (duplexer), adopt the transition packing ring 6 of high Q, low-k that TM mould dielectric resonator 4 and screw 5 are separated, what make that screw 5 heads touch is high Q value, the material of low-k, the decline of its Q value can not have influence on the Q value of whole TM mould dielectric resonator, thereby has solved the problem that fixes TM mould dielectric resonator with metallic screw.
Claims (5)
1.TM mould dielectric filter, comprise Metal cavity, cover plate, tuning screw and TM mould dielectric resonator, described TM mould dielectric resonator is fixed by screws in Metal cavity, it is characterized in that, the screw mandrel of described screw is partly tightened on the bottom or sidewall of Metal cavity through the location hole of TM mould dielectric resonator, the screw mandrel part of screw does not contact with above-mentioned location hole hole wall, between the location hole end face of the head of described screw and TM mould dielectric resonator, be provided with the transition packing ring that the two is separated, the Q*F value of described transition packing ring is 50000～700000, dielectric constant is 2～25, wherein F is frequency (GHz).
2. TM mould dielectric filter according to claim 1, is characterized in that, described transition gasket thickness is 1.5-5mm.
3. TM mould dielectric filter according to claim 1, is characterized in that, described transition gasket thickness is 3mm.
4. TM mould dielectric filter according to claim 1, it is characterized in that, described transition packing ring adopts aluminium oxide, zinc silicate, magnesium silicate, magnesium-niobate, zinc aluminate, aluminium titanium zinc, artificial schellite, calcium zinc tantalum titanium, magnesium barium tungstate, tantalic acid magnesium, barium copper nickel acid yttrium, barium magnesium tungsten titanium, barium zincic acid yttrium, barium zinc-copper acid yttrium niobium, cobalt titanate magnesium, magnesium titanate, magnesium tantalum titanium material or the integrated high Q dielectric materials of its compound.
5. according to the TM mould dielectric filter described in arbitrary claim in claim 1-4, it is characterized in that, described TM mould dielectric filter comprises band pass filter, band stop filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010574305.5A CN102044730B (en) | 2010-12-06 | 2010-12-06 | Transverse magnetic (TM) mode dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010574305.5A CN102044730B (en) | 2010-12-06 | 2010-12-06 | Transverse magnetic (TM) mode dielectric filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102044730A CN102044730A (en) | 2011-05-04 |
| CN102044730B true CN102044730B (en) | 2014-11-26 |
Family
ID=43910652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010574305.5A Active CN102044730B (en) | 2010-12-06 | 2010-12-06 | Transverse magnetic (TM) mode dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102044730B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102881974A (en) * | 2011-07-12 | 2013-01-16 | 凯镭思通讯设备（上海）有限公司 | Filter capable of improving passive intermodulation of resonant column |
| CN102569957A (en) * | 2012-02-08 | 2012-07-11 | 武汉凡谷电子技术股份有限公司 | Indoor multi-cavity filter |
| CN102709629A (en) * | 2012-02-08 | 2012-10-03 | 武汉凡谷电子技术股份有限公司 | Mid frequency range high-power cavity filter |
| CN102544656A (en) * | 2012-02-08 | 2012-07-04 | 武汉凡谷电子技术股份有限公司 | Cavity filter |
| CN103050760A (en) * | 2012-12-10 | 2013-04-17 | 中兴通讯股份有限公司 | Dielectric resonator and assembly method thereof and dielectric filter |
| CN203277600U (en) * | 2013-05-09 | 2013-11-06 | 中兴通讯股份有限公司 | A dielectric filtering apparatus |
| EP3518341B1 (en) | 2014-05-07 | 2021-03-03 | Huawei Technologies Co., Ltd. | Transverse magnetic (tm) mode dielectric filter |
| CN114497932B (en) * | 2021-12-28 | 2023-07-18 | 江苏亨通太赫兹技术有限公司 | Millimeter wave duplexer inserted with EBG structure |
| CN116606142A (en) * | 2023-05-29 | 2023-08-18 | 绵阳市维奇电子技术有限公司 | Microwave dielectric ceramic and preparation method and application thereof |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002311A (en) * | 1997-10-23 | 1999-12-14 | Allgon Ab | Dielectric TM mode resonator for RF filters |
| TWM370839U (en) * | 2009-04-30 | 2009-12-11 | Hon Hai Prec Ind Co Ltd | Cavity filter |
| CN201966312U (en) * | 2010-12-06 | 2011-09-07 | 武汉凡谷电子技术股份有限公司 | TM (Transverse Magnetic) mode dielectric filter |
-
2010
- 2010-12-06 CN CN201010574305.5A patent/CN102044730B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6002311A (en) * | 1997-10-23 | 1999-12-14 | Allgon Ab | Dielectric TM mode resonator for RF filters |
| TWM370839U (en) * | 2009-04-30 | 2009-12-11 | Hon Hai Prec Ind Co Ltd | Cavity filter |
| CN201966312U (en) * | 2010-12-06 | 2011-09-07 | 武汉凡谷电子技术股份有限公司 | TM (Transverse Magnetic) mode dielectric filter |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102044730A (en) | 2011-05-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102044730B (en) | Transverse magnetic (TM) mode dielectric filter | |
| US20160315368A1 (en) | Resonator, Filter, Duplexer, Multiplexer, and Communications Device | |
| US10096884B2 (en) | Resonator, filter, duplexer, and multiplexer | |
| CN201966312U (en) | TM (Transverse Magnetic) mode dielectric filter | |
| CN103441317B (en) | Cavity filter with rotation adjustable loop | |
| CN100568616C (en) | Filter | |
| CN205069824U (en) | High performance dielectric filter | |
| CN201063357Y (en) | Input/output regulation type coupling device for filter | |
| CN106159395A (en) | Cavity body filter, duplexer and radio frequency remote equipment | |
| CN204668441U (en) | The bimodulus dielectric resonant apparatus that frequency difference is adjustable | |
| CN103050760A (en) | Dielectric resonator and assembly method thereof and dielectric filter | |
| CN112271424A (en) | Dielectric resonator, filter, duplexer, multiplexer and communication base station | |
| CN107851871B (en) | Resonator and filter | |
| CN106910967A (en) | Radio-frequency devices and its both-end short circuit dielectric filter | |
| WO2012000450A1 (en) | Communication device, cavity filter, resonance tube and manufacturing method thereof | |
| CN100553033C (en) | The capacitive coupling device of coaxial cavity filter | |
| CN103165969B (en) | Harmonic oscillator, resonant cavity, wave filter component and electromagnetic wave equipment | |
| CN105244592B (en) | A kind of bonding reinforces the method and device thereof of dielectric resonator | |
| CN111814419A (en) | Lumped capacitor selection design method in lumped parameter circulator for communication | |
| CN111129670A (en) | Metal filter of 5G communication technology | |
| CN103107406B (en) | Harmonic oscillator, resonant cavity, wave filter and electromagnetic wave device | |
| CN102025014B (en) | Temperature compensation structure for 3.5GHz frequency filter | |
| WO2019119657A1 (en) | All-dielectric hybrid resonance structure and filter | |
| CN203351720U (en) | Cavity filter | |
| CN103346369A (en) | Band-pass filter, printed circuit board and manufacturing method of printed circuit board |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |