CN104681897A - Input and output coupling structure for transverse magnetic (TM) mode dielectric filter - Google Patents
Input and output coupling structure for transverse magnetic (TM) mode dielectric filter Download PDFInfo
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- CN104681897A CN104681897A CN201310613093.0A CN201310613093A CN104681897A CN 104681897 A CN104681897 A CN 104681897A CN 201310613093 A CN201310613093 A CN 201310613093A CN 104681897 A CN104681897 A CN 104681897A
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Abstract
The invention relates to an input and output coupling structure for a transverse magnetic (TM) mode dielectric filter. The input and output coupling structure for the TM mode dielectric filter comprises an input and output structure (1), an outer layer TM mode dielectric resonator (2) and an inner layer TM mode dielectric resonator (3), wherein the input and output structure (1) is arranged on the dielectric wall of the outer layer TM mode dielectric resonator (2); the inner layer TM mode dielectric resonator (3) is located in the outer layer TM mode dielectric resonator (2). Compared with the prior art, the input and output coupling structure for the TM mode dielectric filter disclosed by the invention has the advantages that the input and output coupling degree is high, the space is saved, and the cost is reduced.
Description
Technical field
The present invention relates to filter field, especially relate to a kind of TM mould dielectric filter input and output coupled structure.
Background technology
Microwave refers to the signal between 300MHz (1MHz=1.0 × 10E6Hz) to 300GHz (1GHz=1.0 × 10E9Hz) frequency range in frequency.Microwave communication originates from the Radar Technology grown up in World War II, be widely used in telecommunications network all over the world at present, due to the transmission that its bandwidth, capacity are large, may be used for various telecommunication service, as phone, telegram, data, fax and color TV etc., its occupation rate in network erection is in accelerating the gesture of rising.Therefore, microwave communication research to developing national economy and satisfy social needs significant.
The most basic microwave telecommunication system between two microwave stations, sets up a microwave communication connect.Each microwave station structure mainly comprises three parts: digital modems, radio-frequency front-end and antenna.Wherein modulator-demodulator is used for subscriber signal to be modulated into radiofrequency signal (300KHz-300MHz); The modulated radiofrequency signal made is carried to microwave or millimeter wave frequency band and carried out being amplified to power by radio-frequency front-end is about 1w; And passive parabolic shape antenna is for transmitting and receiving these microwave signals.Duplexer is the key element in radio-frequency front-end, its function is to make the microwave signal of transmitting and receiving with minimum loss without passing through with influencing each other simultaneously, also will effectively suppress other noise signal on the impact of system, the quality of its electrical property will be directly connected to the signal transmission quality of whole microwave telecommunication system.Mostly adopt coaxial type duplexer in the microwave system of below 6GHz, more than 6GHz then more adopts waveguide type duplexer.
Microwave dielectric resonator is one of new technology occurred the seventies in the world.Nineteen thirty-nine, R.D.Richtmyes just proposes nonmetal medium body and has the function similar with Metal cavity, and it is called dielectric resonant chamber.But until sixties Mo just bring into use in microwave circuit.Just someone studies domestic the seventies, and early eighties has reported relevant achievement in research.
Dielectric resonator is the resonator made with the dielectric material of low-loss, high-k, has been widely used in multiple microwave device.It has following features: 1. volume is little, because the dielectric constant of material is high, the volume of dielectric resonator can be made little of less than 1/10 of hollow waveguide or axle resonator, be convenient to realizing circuit miniaturization; 2. Q
0be worth high, within the scope of high 0.1-30GHz, Q
0can 10 be reached
3-10
4; 3. essentially no frequency limitation, can be adapted to millimeter wave (higher than 100GHz); 4. the temperature stability of resonance frequency is good.Therefore, dielectric resonator is applied widely in hybrid microwave integrated circuit.
Filter is conventional, indispensable use parts as one, play more and more important effect in wireless information transfer technology.The microwave filter of current application cannot be taken into account in low-power consumption and high selectivity, and the input and output degree of coupling is lower, and the realization of product temperature stability is also comparatively difficult, is difficult to the market competition requirement adapting to current high target, low cost.
Summary of the invention
Object of the present invention be exactly in order to overcome above-mentioned prior art exist defect and a kind of TM mould dielectric filter input and output coupled structure is provided.
Object of the present invention can be achieved through the following technical solutions:
A kind of TM mould dielectric filter input and output coupled structure, is characterized in that, comprise input/output structure, outer TM mould dielectric resonator, internal layer TM mould dielectric resonator; Described input/output structure is located on the dielectric wall of outer TM mould dielectric resonator, and it is inner that described internal layer TM mould dielectric resonator is positioned at outer TM mould dielectric resonator.
Described outer TM mould dielectric resonator is rectangle, which is provided with the through hole worn for input/output structure, ensures that the via hole of input/output structure has enough dielectric support, ensures intensity and the high temperature performance of dielectric resonator.
Described through hole is positioned at one jiao of outer TM mould dielectric resonator, and described input/output structure comprises insulated coaxial wire, and this insulated coaxial wire is penetrated by the non-containing metal face of outer TM mould dielectric resonator, is welded on the metal covering of outer TM mould dielectric resonator.
Insulating sleeve is provided with between described insulated coaxial wire and through hole.
The stiffness of coupling of input and output is adjusted according to the gap of insulated coaxial wire and through hole.
Gap is provided with between described outer TM mould dielectric resonator and internal layer TM mould dielectric resonator.
The distance regulating outer TM mould dielectric resonator and internal layer TM mould dielectric resonator is needed according to frequency.
Compared with prior art, the present invention has the following advantages:
(1) input and output stiffness of coupling is high, adds and quote insulated conductor in dielectric wall, greatly enhances the stiffness of coupling of input and output;
(2) stiffness of coupling is adjustable, by regulating the distance adjustment stiffness of coupling of insulated conductor and through hole in input/output structure.
(3) save space, reduce costs.Because input/output structure is positioned at dielectric resonance wall, the occupying volume external space, does not reduce production cost.
Accompanying drawing explanation
Fig. 1 is sectional structure schematic diagram of the present invention;
Fig. 2 is plan structure schematic diagram of the present invention.
1 be input/output structure, 2 be outer TM mould dielectric resonator in figure, 3 for internal layer TM mould dielectric resonator.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
Embodiment
As shown in Figure 1, a kind of TM mould dielectric filter input and output coupled structure, comprises input/output structure 1, outer TM mould dielectric resonator 2, internal layer TM mould dielectric resonator 3; Described input/output structure 1 is located on the dielectric wall of outer TM mould dielectric resonator 2, and it is inner that described internal layer TM mould dielectric resonator 3 is positioned at outer TM mould dielectric resonator 2.
Described outer TM mould dielectric resonator 2 is rectangle, which is provided with the through hole worn for input/output structure 1, ensures that the via hole of input/output structure 1 has enough dielectric support, ensures intensity and the high temperature performance of dielectric resonator.
Described through hole is positioned at one jiao of outer TM mould dielectric resonator 2, described input/output structure 1 comprises insulated coaxial wire, this insulated coaxial wire is penetrated by the non-containing metal face of outer TM mould dielectric resonator 2, is welded on the metal covering of outer TM mould dielectric resonator 2.
Insulating sleeve is provided with between described insulated coaxial wire and through hole.
The stiffness of coupling of input and output is adjusted according to the gap of insulated coaxial wire and through hole.
Gap is provided with between described outer TM mould dielectric resonator 2 and internal layer TM mould dielectric resonator 3.
The distance regulating outer TM mould dielectric resonator 2 and internal layer TM mould dielectric resonator 3 is needed according to frequency.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to execution mode.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all execution modes.And thus the apparent change of extending out or variation be still among the protection range of the invention.
Claims (7)
1. a TM mould dielectric filter input and output coupled structure, is characterized in that, comprises input/output structure (1), outer TM mould dielectric resonator (2), internal layer TM mould dielectric resonator (3); Described input/output structure (1) is located on the dielectric wall of outer TM mould dielectric resonator (2), and it is inner that described internal layer TM mould dielectric resonator (3) is positioned at outer TM mould dielectric resonator (2).
2. a kind of TM mould dielectric filter input and output coupled structure according to claim 1, it is characterized in that, described outer TM mould dielectric resonator (2) is rectangle, which is provided with the through hole worn for input/output structure (1), ensure that the via hole of input/output structure (1) has enough dielectric support, ensure intensity and the high temperature performance of dielectric resonator.
3. a kind of TM mould dielectric filter input and output coupled structure according to claim 2, it is characterized in that, described through hole is positioned at one jiao of outer TM mould dielectric resonator (2), described input/output structure (1) comprises insulated coaxial wire, this insulated coaxial wire is penetrated by the non-containing metal face of outer TM mould dielectric resonator (2), is welded on the metal covering of outer TM mould dielectric resonator (2).
4. a kind of TM mould dielectric filter input and output coupled structure according to claim 2, is characterized in that, be provided with insulating sleeve between described insulated coaxial wire and through hole.
5. a kind of TM mould dielectric filter input and output coupled structure according to claim 4, is characterized in that, adjusts the stiffness of coupling of input and output according to the gap of insulated coaxial wire and through hole.
6. a kind of TM mould dielectric filter input and output coupled structure according to claim 1, is characterized in that, be provided with gap between described outer TM mould dielectric resonator (2) and internal layer TM mould dielectric resonator (3).
7. a kind of TM mould dielectric filter input and output coupled structure according to claim 6, is characterized in that, need according to frequency the distance regulating outer TM mould dielectric resonator (2) and internal layer TM mould dielectric resonator (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613093.0A CN104681897A (en) | 2013-11-27 | 2013-11-27 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310613093.0A CN104681897A (en) | 2013-11-27 | 2013-11-27 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
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| CN104681897A true CN104681897A (en) | 2015-06-03 |
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| CN201310613093.0A Pending CN104681897A (en) | 2013-11-27 | 2013-11-27 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394333A (en) * | 2017-06-21 | 2017-11-24 | 安徽华东光电技术研究所 | Coaxial cavity dielectric oscillator and its preparation method and application |
| WO2020187110A1 (en) * | 2019-03-18 | 2020-09-24 | 华为技术有限公司 | Dielectric transmission line coupler, dielectric transmission line coupling assembly, and network device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321344A (en) * | 1999-08-20 | 2001-11-07 | 株式会社东金 | Dielectric resonator and dielectric filter |
| CN201063357Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Input/output regulation type coupling device for filter |
| CN201130699Y (en) * | 2007-11-16 | 2008-10-08 | 泉州波园射频新技术研究中心 | Microwave low band TM010 module height selectivity cavity dielectric filter |
| CN202275899U (en) * | 2011-10-13 | 2012-06-13 | 摩比天线技术（深圳）有限公司 | Coupling adjusting structure of medium filter |
| CN203218432U (en) * | 2012-11-20 | 2013-09-25 | 深圳光启创新技术有限公司 | Resonant cavity, filter device and electromagnetic wave device |
| CN203218434U (en) * | 2012-11-20 | 2013-09-25 | 深圳光启创新技术有限公司 | Resonant cavity, filter device and electromagnetic wave device |
| CN203707286U (en) * | 2013-11-27 | 2014-07-09 | 凯镭思通讯设备（上海）有限公司 | Input output coupling structure for TM mode dielectric filter |
-
2013
- 2013-11-27 CN CN201310613093.0A patent/CN104681897A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1321344A (en) * | 1999-08-20 | 2001-11-07 | 株式会社东金 | Dielectric resonator and dielectric filter |
| CN201063357Y (en) * | 2006-12-28 | 2008-05-21 | 武汉凡谷电子技术股份有限公司 | Input/output regulation type coupling device for filter |
| CN201130699Y (en) * | 2007-11-16 | 2008-10-08 | 泉州波园射频新技术研究中心 | Microwave low band TM010 module height selectivity cavity dielectric filter |
| CN202275899U (en) * | 2011-10-13 | 2012-06-13 | 摩比天线技术（深圳）有限公司 | Coupling adjusting structure of medium filter |
| CN203218432U (en) * | 2012-11-20 | 2013-09-25 | 深圳光启创新技术有限公司 | Resonant cavity, filter device and electromagnetic wave device |
| CN203218434U (en) * | 2012-11-20 | 2013-09-25 | 深圳光启创新技术有限公司 | Resonant cavity, filter device and electromagnetic wave device |
| CN203707286U (en) * | 2013-11-27 | 2014-07-09 | 凯镭思通讯设备（上海）有限公司 | Input output coupling structure for TM mode dielectric filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107394333A (en) * | 2017-06-21 | 2017-11-24 | 安徽华东光电技术研究所 | Coaxial cavity dielectric oscillator and its preparation method and application |
| WO2020187110A1 (en) * | 2019-03-18 | 2020-09-24 | 华为技术有限公司 | Dielectric transmission line coupler, dielectric transmission line coupling assembly, and network device |
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