CN201966310U - Coaxial cavity filter capable of adjusting far-end harmonic waves - Google Patents
Coaxial cavity filter capable of adjusting far-end harmonic waves Download PDFInfo
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- CN201966310U CN201966310U CN 201020687747 CN201020687747U CN201966310U CN 201966310 U CN201966310 U CN 201966310U CN 201020687747 CN201020687747 CN 201020687747 CN 201020687747 U CN201020687747 U CN 201020687747U CN 201966310 U CN201966310 U CN 201966310U
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- 230000008878 coupling Effects 0.000 claims abstract description 17
- 238000010168 coupling process Methods 0.000 claims abstract description 17
- 238000005859 coupling reaction Methods 0.000 claims abstract description 17
- 230000001105 regulatory effect Effects 0.000 claims description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 2
- 238000006880 cross-coupling reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
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Abstract
The utility model relates to the field of filters, and provides a coaxial cavity filter capable of adjusting far-end harmonic waves. The coaxial cavity filter comprises a main body with a cavity and a cover plate covered on the main body, wherein a first resonant rod and a second resonant rod are arranged in the cavity of the main body; and a first resonant tuning screw rod, a second resonant tuning screw rod and a coupling tuning screw rod are mounted on the cover plate. The coaxial cavity filter is characterized in that an adjusting screw rod for adjusting the far-end harmonic waves is further arranged on the cover plate. In the utility model, as the adjusting screw rod for adjusting the far-end harmonic waves is arranged on the cover plate, the coaxial cavity filter has the advantages of simple structure, easiness in adjustment and good effect, and has less influence on the resonance frequency of the coaxial cavity filter.
Description
Technical field
The utility model belongs to filter field, relates in particular to a kind of coaxial cavity filter of scalable far-end harmonic wave.
Background technology
Along with the wireless mobile telecommunication technology develop rapidly, system operator is more and more higher to the outer performance demands of coaxial cavity filter far-end band, and because the influence of factors such as the depth of the moulding of the increase of cross-couplings limit, port, coupling adjusting screw(rod), coaxial cavity higher mode, coaxial cavity filter more or less can produce unnecessary radio-frequency component at the passband far-end, cause frequency aliasing, cause the high frequency technique index that can't realize that system operator is required.
In order to overcome the problems referred to above, a kind of mode is to realize by improving the low pass index in the prior art, but improve low pass index regular meeting because low-pass cut-off frequencies is not enough, can't restrain the far-end harmonic wave of coaxial cavity filter fully, but low-pass cut-off frequencies is low excessively, can cause the coaxial cavity filter pass-band loss bigger than normal again, increases the low pass size, overall performance is reduced, regulate the comparison difficulty; Another kind of mode is by cross-couplings, port tap, coupling window adjustment are adjusted, but this adjustment mode regular meeting causes design to do over again, and incur loss through delay the R﹠D cycle, and it is little to produce effects.
In sum, the far-end harmonic wave to coaxial cavity filter in the prior art can't be regulated, and can only play the effect that suppresses or weaken, and effect is bad.
The utility model content
The purpose of this utility model is to provide a kind of coaxial cavity filter of scalable far-end harmonic wave, is intended to solve in the prior art far-end harmonic wave to coaxial cavity filter and can't regulates, and can only play the effect that suppresses or weaken, and the bad problem of effect.
The utility model is to realize like this, a kind of coaxial cavity filter of scalable far-end harmonic wave, comprise the main body that is provided with cavity and cover the cover plate that is contained on the main body, be provided with first resonant rod and second resonant rod in the cavity of described main body, the tuning screw rod of first resonance, the tuning screw rod of second resonance and the tuning screw rod that is coupled are housed on the described cover plate, it is characterized in that, also be provided with the adjusting screw(rod) of regulating the far-end harmonic wave on the described cover plate.
Preferably, tuning screw rod of described first resonance and the tuning screw rod of second resonance are separately positioned on position corresponding directly over first resonant rod and second resonant rod.
Preferably, the described adjusting screw(rod) and first resonant rod and second resonant rod shift to install.
Preferably, be respectively arranged with first loading disc and second loading disc on described first resonant rod and second resonant rod, the described adjusting screw(rod) and first loading disc and second loading disc shift to install.
Preferably, described adjusting screw(rod) is arranged on a side of the tuning screw rod of first resonance, the tuning screw rod of second resonance and the tuning screw rod that is coupled.
Preferably, also offer coupling window between described first resonant rod and second resonant rod.
Preferably, the tuning screw rod of described coupling is arranged on position corresponding directly over the described coupling window.
The utility model compared with prior art, beneficial effect is: regulate the far-end harmonic wave by the adjusting screw(rod) that is provided with on the cover plate, simple in structure, and be easy to regulate, effective, little to the resonance frequency influence of coaxial cavity filter simultaneously.
Description of drawings
Fig. 1 is the structural representation of the coaxial cavity filter of the scalable far-end harmonic wave that provides of the utility model embodiment;
Fig. 2 is the cover plate vertical view of the coaxial cavity filter of the scalable far-end harmonic wave that provides of the utility model embodiment.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
A kind of coaxial cavity filter of scalable far-end harmonic wave, comprise the main body that is provided with cavity and cover the cover plate that is contained on the main body, be provided with first resonant rod and second resonant rod in the cavity of described main body, the tuning screw rod of first resonance, the tuning screw rod of second resonance and the tuning screw rod that is coupled are housed on the described cover plate, it is characterized in that, also be provided with the adjusting screw(rod) of regulating the far-end harmonic wave on the described cover plate.
In the embodiment of the invention, regulate the far-end harmonic wave by the adjusting screw(rod) that is provided with on the cover plate, simple in structure, and be easy to regulate, effective, little to the resonance frequency influence of coaxial cavity filter simultaneously.
Below in conjunction with specific embodiment realization of the present utility model is described in detail:
See also Fig. 1 to Fig. 2, the coaxial cavity filter of the scalable far-end harmonic wave that the utility model embodiment provides, comprise the main body 1 that is provided with cavity and cover the cover plate 2 that is contained on the main body 1, be provided with first resonant rod 11 and second resonant rod 12 in the cavity of main body 1, the tuning screw rod 21 of first resonance, the tuning screw rod 22 of second resonance and the tuning screw rod 23 that is coupled are housed on the cover plate 2, also are provided with the adjusting screw(rod) 24 of regulating the far-end harmonic wave on the cover plate 2.
Regulate the far-end harmonic wave by the adjusting screw(rod) 24 that is provided with on the cover plate 2, simple and reliable for structure, be easy to regulate the far-end harmonic wave, effective, and the optimization efficiency height, and very little to the resonance frequency influence of coaxial cavity filter, be easy to realize the high frequency technique index.
In the utility model embodiment, adjusting screw(rod) 24 is threaded with cover plate 2.Concrete, can on cover plate 2, through hole be set, internal thread is set in the through hole, on the adjusting screw(rod) 24 external screw thread is set, thereby being screwed in, adjusting screw(rod) 24 screws out, to regulate far-end harmonic wave power.
In the utility model embodiment, the tuning screw rod 21 of first resonance, the tuning screw rod 22 of second resonance are separately positioned on position corresponding directly over first resonant rod 11, second resonant rod 12, are used for regulating respectively the resonance frequency of first resonant rod 11, second resonant rod 12.
In embodiment of the present utility model, the adjusting screw(rod) 24 and first resonant rod 11 and second resonant rod 12 shift to install.Staggering in the position that is the adjusting screw(rod) 24 and first resonant rod 11, second resonant rod 12, both can realize the regulatory function of far-end harmonic wave power, can reduce the influence to the resonance frequency of coaxial cavity filter simultaneously.
In an embodiment of the present utility model, be respectively arranged with first loading disc 111 and the tuning screw rod 21 of second loading disc, 121, the first resonance and the tuning screw rod 22 of second resonance on first resonant rod 11 and second resonant rod 12 and be separately positioned on correspondence position directly over first loading disc 111 and second loading disc 121.The adjusting screw(rod) 24 and first loading disc 111 and second loading disc 121 shift to install, and promptly stagger in the adjusting screw(rod) 24 and first loading disc 111 and second loading disc, 121 positions, can reduce the influence to the resonance frequency of coaxial cavity filter.
In the utility model embodiment, as shown in Figure 2, adjusting screw(rod) 24 can specifically be arranged on the side of the tuning screw rod 21 of first resonance, the tuning screw rod 22 of second resonance, the tuning screw rod 23 of coupling, preferred upside or downside, and as far as possible away from the position directly over first loading disc 111 and second loading disc 121, to reduce influence to the resonance frequency of coaxial cavity filter.Certainly, also can be arranged on left side, the right side of the tuning screw rod 21 of first resonance, the tuning screw rod 22 of second resonance, the tuning screw rod 23 of coupling, and between the tuning screw rod 21 of first resonance and the tuning screw rod 23 of coupling or tuning screw rod 22 of second resonance and the tuning screw rod 23 of coupling, the above-mentioned position of enumerating also is not used in limitation the utility model.
In embodiment of the present utility model, the quantity of adjusting screw(rod) 24 can be provided with at least one as required.
In the utility model embodiment, also offer coupling window 13 between the first adjacent resonant rod 11 and second resonant rod 12.The tuning screw rod 23 that is coupled is arranged on position corresponding directly over the coupling window 13, the coupling amount that is used for regulating coupling window 13.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (8)
1. the coaxial cavity filter of a scalable far-end harmonic wave, comprise the main body that is provided with cavity and cover the cover plate that is contained on the main body, be provided with first resonant rod and second resonant rod in the cavity of described main body, the tuning screw rod of first resonance, the tuning screw rod of second resonance and the tuning screw rod that is coupled are housed on the described cover plate, it is characterized in that, also be provided with the adjusting screw(rod) of regulating the far-end harmonic wave on the described cover plate.
2. coaxial cavity filter as claimed in claim 1 is characterized in that, tuning screw rod of described first resonance and the tuning screw rod of second resonance are separately positioned on position corresponding directly over first resonant rod and second resonant rod.
3. coaxial cavity filter as claimed in claim 1 is characterized in that, the described adjusting screw(rod) and first resonant rod and second resonant rod shift to install.
4. coaxial cavity filter as claimed in claim 3 is characterized in that, is respectively arranged with first loading disc and second loading disc on described first resonant rod and second resonant rod, and the described adjusting screw(rod) and first loading disc and second loading disc shift to install.
5. as each described coaxial cavity filter in the claim 1 to 4, it is characterized in that described adjusting screw(rod) is arranged on a side of the tuning screw rod of first resonance, the tuning screw rod of second resonance and the tuning screw rod that is coupled.
6. as each described coaxial cavity filter in the claim 1 to 4, it is characterized in that, described adjusting screw(rod) at least one.
7. coaxial cavity filter as claimed in claim 1 is characterized in that, also offers coupling window between described first resonant rod and second resonant rod.
8. coaxial cavity filter as claimed in claim 7 is characterized in that, the tuning screw rod of described coupling is arranged on position corresponding directly over the described coupling window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020687747 CN201966310U (en) | 2010-12-29 | 2010-12-29 | Coaxial cavity filter capable of adjusting far-end harmonic waves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020687747 CN201966310U (en) | 2010-12-29 | 2010-12-29 | Coaxial cavity filter capable of adjusting far-end harmonic waves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201966310U true CN201966310U (en) | 2011-09-07 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020687747 Expired - Fee Related CN201966310U (en) | 2010-12-29 | 2010-12-29 | Coaxial cavity filter capable of adjusting far-end harmonic waves |
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| Country | Link |
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| CN (1) | CN201966310U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522617A (en) * | 2011-12-28 | 2012-06-27 | 上海大学 | Stepped impedance resonator (SIR) coaxial-cavity band-pass filter |
| CN102544658A (en) * | 2012-01-10 | 2012-07-04 | 深圳市大富科技股份有限公司 | Cavity filter and cross-coupling structure of cavity filter |
-
2010
- 2010-12-29 CN CN 201020687747 patent/CN201966310U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102522617A (en) * | 2011-12-28 | 2012-06-27 | 上海大学 | Stepped impedance resonator (SIR) coaxial-cavity band-pass filter |
| CN102544658A (en) * | 2012-01-10 | 2012-07-04 | 深圳市大富科技股份有限公司 | Cavity filter and cross-coupling structure of cavity filter |
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| Date | Code | Title | Description |
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| 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: 20110907 Termination date: 20171229 |