CN203707286U - Input output coupling structure for TM mode dielectric filter - Google Patents
Input output coupling structure for TM mode dielectric filter Download PDFInfo
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- CN203707286U CN203707286U CN201320761398.1U CN201320761398U CN203707286U CN 203707286 U CN203707286 U CN 203707286U CN 201320761398 U CN201320761398 U CN 201320761398U CN 203707286 U CN203707286 U CN 203707286U
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- dielectric resonator
- mould dielectric
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- mould
- input output
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Abstract
The utility model relates to an input output coupling structure for a TM mode dielectric filter. The input output coupling structure comprises an input output structure (1), an external layer TM mode dielectric resonator (2) and an internal layer TM mode dielectric resonator (3); the input output structure (1) is disposed on a dielectric wall of the external layer TM mode dielectric resonator (2); and the internal layer TM mode dielectric resonator (3) is disposed inside the external layer TM mode dielectric resonator (2). Compared with the prior art, the input output coupling structure has the advantages that input output coupling degree is high, space is saved and cost is reduced.
Description
Technical field
The utility model relates to filter field, especially relates to a kind of TM mould dielectric filter input and output coupled structure.
Background technology
Microwave refers in frequency the signal to 300GHz (1GHz=1.0 × 10E9Hz) frequency range between 300MHz (1MHz=1.0 × 10E6Hz).Microwave communication originates from the Radar Technology growing up in World War II, be widely used at present telecommunications network all over the world, because its bandwidth, capacity are large, can be for the transmission of various telecommunication services, as phone, telegram, data, fax and color TV etc., its occupation rate in network sets up is the gesture of accelerating rising.Therefore, the research of microwave communication to developing national economy and satisfy social needs significant.
The most basic microwave telecommunication system is between two microwave stations, to set up a microwave communication to connect.In each microwave station structure, mainly comprise three parts: digital modems, radio-frequency front-end and antenna.Wherein modulator-demodulator is for being modulated into radiofrequency signal (300KHz-300MHz) by subscriber signal; Radio-frequency front-end is carried to microwave or millimeter wave frequency band by the modulated radiofrequency signal making and to be amplified to power be about 1w; And passive parabolic shape antenna is used 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 transmitting and receiving to pass through without influencing each other with minimum loss simultaneously, also will effectively suppress the impact of other noise signal on system, the quality of its electrical property will be directly connected to the signal transmission quality of whole microwave telecommunication system.Microwave system below 6GHz adopts coaxial type duplexer mostly, and 6GHz adopts waveguide type duplexers above.
Microwave dielectric resonator is one of new technology occurring the seventies in the world.Nineteen thirty-nine, R.D.Richtmyes just proposes nonmetal medium body to be had and the similar function of Metal cavity, and it is called to dielectric resonant chamber.But until sixties Mo just bring into use in microwave circuit.Just someone studies domestic the seventies, and early eighties has been reported relevant achievement in research.
Dielectric resonator is the resonator made from 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, can make the volume of dielectric resonator little of hollow waveguide or below 1/10 of axle resonator, is convenient to realize circuit miniaturization; 2. Q
0be worth high, within the scope of high 0.1-30GHz, Q
0can reach 10
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, as conventional, indispensable use parts, is being brought into play more and more important effect in wireless information transfer technology.The microwave filter of application cannot taken into account aspect low-power consumption and high selectivity at present, and the input and output degree of coupling is lower, and the realization of product temperature stability is also comparatively difficult, is difficult to adapt to current high target, market competition requirement cheaply.
Utility model content
The purpose of this utility model is exactly to provide a kind of TM mould dielectric filter input and output coupled structure in order to overcome the defect that above-mentioned prior art exists.
The purpose of this utility model can be achieved through the following technical solutions:
A kind of TM mould dielectric filter input and output coupled structure, is characterized in that, comprises 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 described internal layer TM mould dielectric resonator is positioned at outer TM mould dielectric resonator inside.
Described outer TM mould dielectric resonator is rectangle, which is provided with the through hole wearing for input/output structure, guarantees 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 a jiao of outer TM mould dielectric resonator, and described input/output structure comprises insulation concentric conductor, and this insulation concentric conductor 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.
Between described insulation concentric conductor and through hole, be provided with insulating sleeve.
Adjust the stiffness of coupling of input and output according to the gap of insulation concentric conductor and through hole.
Between described outer TM mould dielectric resonator and internal layer TM mould dielectric resonator, be provided with gap.
Need to regulate the distance of outer TM mould dielectric resonator and internal layer TM mould dielectric resonator according to frequency.
Compared with prior art, the utlity model has following advantage:
(1) input and output stiffness of coupling is high, adds and quote insulated conductor in dielectric wall, has improved to a great extent the stiffness of coupling of input and output;
(2) stiffness of coupling is adjustable, by the distance adjustment stiffness of coupling of insulated conductor and through hole in adjusting input/output structure.
(3) save space, reduce costs.Because input/output structure is positioned at dielectric resonance wall, the occupying volume external space, has not reduced production cost.
Accompanying drawing explanation
Fig. 1 is the utility model sectional structure schematic diagram;
Fig. 2 is the utility model plan structure schematic diagram.
In figure, 1 is that input/output structure, 2 is that outer TM mould dielectric resonator, 3 is internal layer TM mould dielectric resonator.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is elaborated.
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 described internal layer TM mould dielectric resonator 3 is positioned at outer TM mould dielectric resonator 2 inside.
Described outer TM mould dielectric resonator 2 is rectangle, which is provided with the through hole wearing for input/output structure 1, guarantees 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 a jiao of outer TM mould dielectric resonator 2, described input/output structure 1 comprises insulation concentric conductor, this insulation concentric conductor 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.
Between described insulation concentric conductor and through hole, be provided with insulating case letter.
Adjust the stiffness of coupling of input and output according to the gap of insulation concentric conductor and through hole.
Between described outer TM mould dielectric resonator 2 and internal layer TM mould dielectric resonator 3, be provided with gap.
Need to regulate the distance of outer TM mould dielectric resonator 2 and internal layer TM mould dielectric resonator 3 according to frequency.
Obviously, above-described embodiment is only for example is clearly described, and the not restriction 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 without also giving exhaustive to all execution modes.And among the protection range that the apparent variation of being extended out thus or variation are still created in the utility model.
Claims (5)
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 described internal layer TM mould dielectric resonator (3) is positioned at outer TM mould dielectric resonator (2) inside.
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 wearing for input/output structure (1).
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 a jiao of outer TM mould dielectric resonator (2), described input/output structure (1) comprises insulation concentric conductor, this insulation concentric conductor 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 3, is characterized in that, between described insulation concentric conductor and through hole, is provided with insulating sleeve.
5. a kind of TM mould dielectric filter input and output coupled structure according to claim 1, is characterized in that, between described outer TM mould dielectric resonator (2) and internal layer TM mould dielectric resonator (3), is provided with gap.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761398.1U CN203707286U (en) | 2013-11-27 | 2013-11-27 | Input output coupling structure for TM mode dielectric filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320761398.1U CN203707286U (en) | 2013-11-27 | 2013-11-27 | Input output coupling structure for TM mode dielectric filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203707286U true CN203707286U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320761398.1U Expired - Fee Related CN203707286U (en) | 2013-11-27 | 2013-11-27 | Input output coupling structure for TM mode dielectric filter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203707286U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681897A (en) * | 2013-11-27 | 2015-06-03 | 凯镭思通讯设备（上海）有限公司 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
-
2013
- 2013-11-27 CN CN201320761398.1U patent/CN203707286U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104681897A (en) * | 2013-11-27 | 2015-06-03 | 凯镭思通讯设备（上海）有限公司 | Input and output coupling structure for transverse magnetic (TM) mode dielectric filter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140709 Termination date: 20181127 |