CN201725863U - TM (Transverse Magnetic) mode dielectric resonator - Google Patents
TM (Transverse Magnetic) mode dielectric resonator Download PDFInfo
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- CN201725863U CN201725863U CN2010201714449U CN201020171444U CN201725863U CN 201725863 U CN201725863 U CN 201725863U CN 2010201714449 U CN2010201714449 U CN 2010201714449U CN 201020171444 U CN201020171444 U CN 201020171444U CN 201725863 U CN201725863 U CN 201725863U
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Abstract
The utility model discloses a TM (Transverse Magnetic) mode dielectric resonator which relates to an improvement of a TM mode dielectric resonator and can improve the temperature performance through improving the entirety of a device under the condition of guaranteeing the Q value. The TM mode dielectric resonator comprises a casing, a cover plate and a cylindrical resonator, wherein the casing is provided with a cylindrical cavity body; the lower end surface of the resonator is in welded connection on the bottom surface of the casing, and is coaxial with the casing; and a gasket for enabling the resonator and the cover plate to be in gapless conducting connection is arranged between the upper end surface of the resonator and the cover plate. The utility model is a good resonator with high Q value, reliable temperature stability and good heat radiation; the welded connection of the resonator and the casing overcomes a plurality of problems brought about by the conventional bonding technology and gives good heat radiation at the bottom end of the resonator; under the working environment of occurrence of transverse magnetic wave, the TM mode dielectric resonator can better control the deformation between the resonator and the cover plate under high-low temperature so as to greatly reduce the temperature coefficient of the entire product; and simultaneously, the TM mode dielectric resonator is beneficial to materials adopting high Q value, thereby greatly reducing the time of material development work.
Description
Technical field
The utility model relates to being applicable to the improvement of microwave communication with TM mould dielectric resonator.
Background technology
Recently, it is more and more important that medium T M mould (transverse magnetic wave) resonator has become aspect microwave communication, because they have following advantage compared with the cavity resonator of routine: small product size is little, low loss is arranged, cost is low, high-temperature stability, good harmonic wave suppress, and also can do the product in broadband simultaneously.The object that any that have a simple geometric shape and its material list reveals low dielectric loss and high-k can play the effect of the dielectric resonator with high Q value.Consider the factor of production and processing technical elements, dielectric resonator is processed into column type or circular ring type usually.
Be fixed on well in the metal cavitg for ease of aforementioned column type or circular ring type resonator, adopt adhesive to be fixed usually and be connected the technological means of shell bottom wall.This technological means can be brought following several problem: 1) Qu to whole resonator descends very big; 2) what of adhesive consumption are very big to the influence of frequency; 3) adopt adhesive between media ceramic resonator and the metallic enclosure, make resonator under powerful service condition, the comparison difficulty that heat dissipation problem becomes.Simultaneously, the length of dielectric resonator all is shorter than the length of metal cavitg, and this just makes and leaves certain slit between resonator and the metal cover board inevitably, makes the upper end heat not have the path of heat loss through conduction.This makes the Q value (quality factor, the Q value is big, and little, the easy starting of oscillation of exciting power that internal resistance is little, loss is little, need is described) of entire device also descend very big.The applicant unit originally for the temperature coefficient of dielectric material and the temperature coefficient of metal cavitg can be mated well, has carried out profound exploitation from the material angle, and the R﹠D cycle is longer, still is in research and development so far and solves.This fails Q value and temperature coefficient to capture to contradiction always.
Summary of the invention
The utility model provides a kind of by improving the globality of device at above problem, can improve the TM mould dielectric resonator of temperature performance under the situation of guaranteeing the Q value.
The technical solution of the utility model is: comprise housing, cover plate and columniform resonator with circular cylindrical cavity, the lower surface of described resonator is welded to connect on described housing bottom surface, and with described housing concentric; Be provided with the pad that both tights conductions are connected between the upper surface of described resonator and the described cover plate.
The diameter that described pad is made for the plastic deformation material is slightly less than the discoid pad of described resonator diameter, and its diameter reaches consistent with described resonator diameter after plastic deformation takes place.
Described pad is the round boss on the described cover plate bottom surface, and described boss diameter is consistent with described resonator diameter, and described boss bottom surface contacts with described resonator face upper surface face; Establish the elasticity gasket ring between described cover plate and the described housing.
Described resonator and pad are established through hole; Described cover plate center is provided with the frequency adjustment rod, and described frequency adjustment rod links to each other with cover plate by screw thread; Described frequency adjustment rod can stretch into the through hole of described resonator by the through hole on the described pad.
The utlity model has high Q value and the reliable temperature stability and the good resonator that dispels the heat.Being welded to connect of resonator and housing overcome the problems that technique for sticking in the past brings.Make that the heat radiation of resonator bottom is better.In addition, in the original structure, no matter how high machining accuracy is, all be difficult to overcome the clearance issues between resonator end face and the cover plate bottom surface, for this reason, the utility model is to guarantee that cover plate contacts two kinds of technical measures of employing with heat conduction between the resonator, the one, the plastic deformation metal of employing low yield strength is such as lead, aluminium, copper or some alloy materials; The 2nd, under cover plate, boss is set, elasticity gasket ring (can be macromolecular material) is set between cover plate and housing, both sealed, play the height regulating action again.So just can guarantee that tight ground is connected between resonator and the cover plate.Under transverse magnetic wave generation operational environment, structure of the present utility model can be controlled the distortion between resonator and cover plate well under high low temperature, and then dwindles the temperature coefficient of entire product greatly.Help adopting the material of high Q simultaneously, thereby the developing material operating time is reduced greatly.
Description of drawings
Fig. 1 is a structural representation of the present utility model
1 is resonator among the figure, the 2nd, and lower surface, the 3rd, upper surface, the 4th, pad, the 5th, housing, the 6th, cover plate, the 7th, frequency adjustment rod, the 8th, coupling device input, the 9th, coupling device output.
Fig. 2 the utility model performance chart
Solid line is represented existing techniques in realizing product Q value among the figure, and dotted line is represented the utility model realization product Q value.
Embodiment
The utility model comprises housing 5, cover plate 6 and columniform resonator 1 with circular cylindrical cavity as shown in Figure 1, and the lower surface 2 of described resonator 1 is welded to connect on described housing 5 bottom surfaces, resonator 1 and described housing 5 concentrics; Be provided with the pad 4 that both tights conductions are connected between the upper surface 3 of described resonator 1 and the described cover plate 6.
The diameter that the pad 4 of first kind of execution mode is made for the plastic deformation material is slightly less than the discoid pad of described resonator 1 diameter, and its diameter reaches consistent with the diameter of described resonator 1 after plastic deformation takes place.Can select the metallic conductor that has under the normal temperature than low yield strength for use, such as lead, aluminium, copper and some alloys, when fastening cover plate 6, cover plate 6 downward pressure can guarantee that pad 4 tight ground link to each other cover plate 6 with resonator 1.Preferably select elastoplasticity modification material for use, so again during variations in temperature, compensation since the microscale dimensions that expansion that temperature produces and shrinkage factor bring change.
The round boss of pad 4 for being provided with on cover plate 6 bottom surfaces of second kind of execution mode, described boss diameter is consistent with the diameter of described resonator 1, and described boss bottom surface contacts with described resonator face upper surface face; Establish the elasticity gasket ring between described cover plate 6 and the described housing 5, can select macromolecule or synthetic materials such as sealing ring, sealing gasket for use.
For ease of regulating, resonator 1 and pad 4 are established through hole; Described cover plate 6 centers are provided with frequency adjustment rod 7, and described frequency adjustment rod 7 links to each other with cover plate 6 by screw thread; Described frequency adjustment rod 7 can stretch into the through hole of described resonator 1 by the through hole on the described pad 4, moves up and down, to change frequency.
Adopt coupling device input 8 to realize and outside being connected with coupling device output 9.
Performance of the present utility model as shown in Figure 2, we adopt vector network instrument means to compare detection, draw curve as shown in Figure 2.Wherein the curve of prior art is shown in solid line among Fig. 2; Curve of the present utility model as shown in phantom in Figure 2.From the structure angle, owing to adopt loss ratio adhesive much smaller of metal material, so that Q improves is a lot; Simultaneously, incorporate welding can also make radiating effect improve greatly, and then temperature also is improved.
Claims (4)
1.TM the mould dielectric resonator comprises housing, cover plate and columniform resonator with circular cylindrical cavity, it is characterized in that the lower surface of described resonator is welded to connect on described housing bottom surface, and with described housing concentric; Be provided with the pad that both tights conductions are connected between the upper surface of described resonator and the described cover plate.
2. TM mould dielectric resonator according to claim 1, it is characterized in that, the diameter that described pad is made for the plastic deformation material is slightly less than the discoid pad of described resonator diameter, and its diameter reaches consistent with described resonator diameter after plastic deformation takes place.
3. TM mould dielectric resonator according to claim 1 is characterized in that, described pad is the round boss on the described cover plate bottom surface, and described boss diameter is consistent with described resonator diameter, and described boss bottom surface contacts with described resonator face upper surface face; Establish the elasticity gasket ring between described cover plate and the described housing.
4. according to claim 1,2 or 3 described TM mould dielectric resonators, it is characterized in that described resonator and pad are established through hole; Described cover plate center is provided with the frequency adjustment rod, and described frequency adjustment rod links to each other with cover plate by screw thread; Described frequency adjustment rod can stretch into the through hole of described resonator by the through hole on the described pad.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201714449U CN201725863U (en) | 2010-04-27 | 2010-04-27 | TM (Transverse Magnetic) mode dielectric resonator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201714449U CN201725863U (en) | 2010-04-27 | 2010-04-27 | TM (Transverse Magnetic) mode dielectric resonator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201725863U true CN201725863U (en) | 2011-01-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201714449U Expired - Lifetime CN201725863U (en) | 2010-04-27 | 2010-04-27 | TM (Transverse Magnetic) mode dielectric resonator |
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| CN (1) | CN201725863U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826649A (en) * | 2010-04-27 | 2010-09-08 | 江苏江佳电子股份有限公司 | Transverse magnetic (TM) mode dielectric resonator |
| CN102324617A (en) * | 2011-07-08 | 2012-01-18 | 武汉凡谷电子技术股份有限公司 | Two-end-grounded TM (Transverse Magnetic) mode medium resonator |
| EP2538487A1 (en) * | 2011-06-24 | 2012-12-26 | CommScope Italy S.r.l. | Temperature-independent dielectric resonator |
| CN103441317A (en) * | 2013-09-05 | 2013-12-11 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
-
2010
- 2010-04-27 CN CN2010201714449U patent/CN201725863U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101826649A (en) * | 2010-04-27 | 2010-09-08 | 江苏江佳电子股份有限公司 | Transverse magnetic (TM) mode dielectric resonator |
| EP2538487A1 (en) * | 2011-06-24 | 2012-12-26 | CommScope Italy S.r.l. | Temperature-independent dielectric resonator |
| CN102324617A (en) * | 2011-07-08 | 2012-01-18 | 武汉凡谷电子技术股份有限公司 | Two-end-grounded TM (Transverse Magnetic) mode medium resonator |
| CN102324617B (en) * | 2011-07-08 | 2014-03-19 | 武汉凡谷电子技术股份有限公司 | Two-end-grounded TM (Transverse Magnetic) mode medium resonator |
| CN103441317A (en) * | 2013-09-05 | 2013-12-11 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
| CN103441317B (en) * | 2013-09-05 | 2015-07-15 | 宁波泰立电子科技有限公司 | Cavity filter with rotation adjustable loop |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20110126 |
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| CX01 | Expiry of patent term |