CN103811838A - Method for manufacturing frequency selector - Google Patents
Method for manufacturing frequency selector Download PDFInfo
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- CN103811838A CN103811838A CN201210466986.2A CN201210466986A CN103811838A CN 103811838 A CN103811838 A CN 103811838A CN 201210466986 A CN201210466986 A CN 201210466986A CN 103811838 A CN103811838 A CN 103811838A
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- frequency selector
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Abstract
The invention discloses a method for manufacturing a frequency selector. The method comprises the following steps: heating for melting an aluminium ingot into a dough shape, putting the dough-shaped aluminium ingot in front of a mould which is located in a fixed position, pushing the dough-shaped aluminium ingot towards the direction of the mould by a hydraulic machine, extruding the aluminium ingot into a sectional material with multiple cavities in the body according to the shape of the mould, drilling holds for tapping on an upper cover plate or a lower cover plate of the sectional material according to the positions of cavity bodies, allocating drilled holes after tapping into resonance holes and coupling holes, and encapsulating front and back panels of the sectional material to form the frequency selector. The method for manufacturing the frequency selector of the invention adopts the mode of extrusion moulding at a time, compared with the existing finish-milling process, the smooth finish of inner surfaces of the cavity bodies is good, and volume is greatly reduced; multiple cavity bodies in vertical arrangement side by side can be processed at a time, and compared with a row of the existing frequency selectors which are combined by multiple cavity bodies in vertical arrangement side by side, processing efficiency is increased; because of the arrangement that the cavity bodies in vertical arrangement side by side are formed by the extrusion moulding at a time, assembly procedures are saved, and the frequency selector is convenient to debug.
Description
Technical field
The present invention relates to the manufacture method of the frequency selector of applying in a kind of wireless communication field, particularly a kind of can be by the manufacture method of powerful low-loss frequency selector.
Background technology
In all kinds of Wireless Telecom Equipments of modern times, the high-power base station of mobile communication, the Digital Clustering high-power wireless base stations etc. such as such as GSM, CDMA, WCDMA, CDMA2000, TD-SCDMA, LTE all need a kind of can by high-power, there is high selectivity energy, loss as far as possible little filter again, and the various critical components that go out based on this art designs, as the duplexer based in base station, be placed in the tower amplifier under antenna for base station, and be placed in base station delivery outlet for high-power amplification He road splitter etc.
Can pass through powerful filter for one, want to obtain low loss performance and high selectivity energy simultaneously, also have technical difficulty, because low-loss and high selectivity are a pair of contradiction that overcomes of being relatively difficult to.Existing TEM film multicavity filter has two kinds of conventional versions: distributed couplings multicavity filter and the adjustable multicavity filter of centralized coupling.
In the main body that distributed couplings multicavity filter generally processes in conventional cast, comb teeth-shaped inserts multiple inner wires, centered by inner wire, form multiple rectangular cavities, screw in the resonance frequency adjustment screw relative with inner wire from cavity opposite side, filter two ends have end plate, and input and output connector joins with filter two ends cavity respectively.The design of this filter with manufacture comparative maturity, insertion loss is also smaller, but the problem existing is the being coupled as fixing design between adjacent resonators, passband width is non-adjustable, is unfavorable for design and the manufacture of many kinds series of products.
Centralized coupling is adjustable, and multicavity filter mostly is rotary-cut in bulk metal piece processes multiple cylindrical cavities or rectangular cavity, also there is inner wire and resonance frequency adjustment screw, between adjacent resonators, there is intercommunicating pore, regulate the coupling amount between resonant cavity at intercommunicating pore place by extrapolation screw rod.The major advantage of the adjustable multicavity filter of centralized coupling is: after product is made, the performances such as ripple, input vswr in passband width and band fully can be adjusted to promising result.The problem existing is that screw device is heavier, and insertion loss is also larger, and requires in more situation when resonant cavity, and difficulty of processing increases, debugging Comparision very complicated.
The ZL patent No. is that 200320110871.6 utility model has been announced the high-power multicavity filter of a kind of low loss high selectivity, the subject matter of its existence is, if when there is multiple row in multicavity filter, longitudinally upper existence is arranged filter cavity more in the horizontal, it is made up of multiple filter cavity combinations that are longitudinally provided with multi-cavity in the horizontal, processing is inconvenient, and efficiency is lower.
Summary of the invention
The present invention is the lower defect of multicavity filter working (machining) efficiency existing in prior art in order to overcome, and according to an aspect of the present invention, proposes a kind of manufacture method of frequency selector.
According to the manufacture method of the frequency selector of the embodiment of the present invention, comprising:
Become dough shape to be placed on before the mould being in a fixed position aluminium ingot heat fused, hydraulic press promotes doughy aluminium ingot to mould direction, aluminium ingot is squeezed into the section bar of one multi-cavity according to the shape of mould;
Upper cover plate or lower cover at section bar carry out drilling-tapping according to cavity position, and the boring after tapping is distributed into resonance hole and coupling aperture;
By the front and back panel encapsulation of section bar, forming frequency selector.
The manufacture method of frequency selector of the present invention, the mode combining that employing lumped parameter is coupled and distributed constant is coupled, utilize the mode of an extrusion modling, in contrast to existing finish-milling technique, cavity inner surface fineness is good, volume dwindles greatly, and take 9 passages as example, volume can dwindle more than 60%; Once can process the cavity of multiple longitudinal arrangements side by side, contrast existing one and arrange the frequency selector being combined by the cavity of multiple longitudinal arrangements, improve working (machining) efficiency; Because extrusion modling once forms the cavity setting of longitudinal arrangement side by side, save the program of assembling, be convenient to debugging.
Other features and advantages of the present invention will be set forth in the following description, and, partly from specification, become apparent, or understand by implementing the present invention.Object of the present invention and other advantages can be realized and be obtained by specifically noted structure in write specification, claims and accompanying drawing.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is the top cross sectional view of frequency selector of the present invention as 9 passage mixers;
Fig. 2 is the face schematic cross-section of frequency selector of the present invention as 9 passage mixers;
Fig. 3 is that frequency selector of the present invention is looked schematic cross-section as the right side of 9 passage mixers;
Fig. 4 is the perspective view of frequency selector of the present invention as 9 passage mixers;
Fig. 5 is the waveform schematic diagram of frequency selector of the present invention as TD-SCDMA multi-channel power combination device;
Fig. 6 is the waveform schematic diagram of frequency selector of the present invention as LTE multi-channel power combination device.
Mark the following drawings mark thereon by reference to the accompanying drawings:
1-resonance hole, 2-coupling aperture, 3-resonant column, 4-upper cover plate.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail, but is to be understood that protection scope of the present invention is not subject to the restriction of embodiment.
According to the embodiment of the present invention, a kind of manufacture method of frequency selector is provided, as Figure 1-4, comprising:
Section bar is provided with multiple cavitys in longitudinal often listing, be generally 2-10 chamber, between each cavity, be interconnected, transversely can arrange multiple row cavity, transversely arranged cavity is one deck arrangement up and down both, also multilayer is arranged up and down, and if the input in Fig. 4 is the input of upper and lower two-layer Gong18 road, output is one deck totally 9 tunnel outputs.
Coupling aperture comprises adjacent coupled hole and separate space coupling aperture, adjacent coupled hole is arranged between adjacent cavity, adjacent coupled hole operated by rotary motion is between two adjacent resonance holes, on adjacent coupled hole, be equipped with adjacent coupled adjusting screw(rod), adjacent coupled adjusting screw(rod) can move along upper cover plate or the upper and lower spiral of lower cover; Separate space coupling aperture is arranged between the separate space in cavity, and the cavity of any number of can being separated by is as required equipped with separate space coupling adjusting screw(rod) on separate space coupling aperture, and separate space coupling adjusting screw(rod) can move along upper cover plate or the upper and lower spiral of lower cover.
The manufacture method of frequency selector of the present invention, the mode of an extrusion modling of employing, in contrast to existing finish-milling technique, and cavity inner surface fineness is good, and volume dwindles greatly, and take 9 passages as example, volume can dwindle more than 60%; Once can process the cavity of multiple longitudinal arrangements side by side, contrast existing one and arrange the frequency selector being combined by the cavity of multiple longitudinal arrangements, improve working (machining) efficiency; Because extrusion modling once forms the cavity setting of longitudinal arrangement side by side, save the program of assembling, be convenient to debugging.
Existing cavity is that multiple longitudinal cavitys are fixing side by side, is provided with two-layer partition wall between adjacent cavity, between the adjacent cavity of the present invention, only has one deck partition wall, has saved volume and material.
As shown in Figure 5, for frequency selector of the present invention is as TD-SCDMA(1880MHz ~ 2025MHz) the waveform schematic diagram of multi-channel power combination device, its technical requirement comprises: transmission coefficient S21 requires be greater than-0.4dB of passband insertion loss, to LTE(2500MHz ~ 2690MHz) be less than-80dB of inhibition degree, input port reflection coefficient S 11 and output port reflection coefficient S22 require be less than-17dB.
As shown in Figure 6, for frequency selector of the present invention is as LTE(2500MHz ~ 2690MHz) the waveform schematic diagram of multi-channel power combination device, its technical requirement comprises: transmission coefficient S21 requires be greater than-0.4dB of passband insertion loss, to TD-SCDMA(1880MHz ~ 2025MHz) be less than-80dB of inhibition degree, input port reflection coefficient S11 and output port reflection coefficient S22 require be less than-17dB.
Can be found out by the oscillogram shown in Fig. 5, Fig. 6, frequency selector of the present invention is as TD-SCDMA(1880MHz ~ 2025MHz)/LTE(2500MHz ~ 2690MHz) multi-channel power combination device, meet default index request completely.
The present invention can have multiple multi-form embodiment; above take Fig. 1-Fig. 6 as example is by reference to the accompanying drawings to technical scheme of the present invention explanation for example; this does not also mean that the applied instantiation of the present invention can only be confined in specific flow process or example structure; those of ordinary skill in the art should understand; the specific embodiments that above provided is some examples in multiple its preferred usage, and the execution mode of any embodiment the claims in the present invention all should be within technical solution of the present invention scope required for protection.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a manufacture method for frequency selector, is characterized in that, comprising:
Become dough shape to be placed on before the mould being in a fixed position aluminium ingot heat fused, hydraulic press promotes doughy aluminium ingot to mould direction, aluminium ingot is squeezed into the section bar of one multi-cavity according to the shape of mould;
Upper cover plate or lower cover at described section bar carry out drilling-tapping according to cavity position, and the boring after tapping is distributed into resonance hole and coupling aperture;
By the front and back panel encapsulation of described section bar, forming frequency selector.
2. method according to claim 1, is characterized in that, described section bar comprises multiple cavitys that are connected in longitudinal often listing, and comprises in the horizontal multiple row cavity.
3. method according to claim 2, is characterized in that, described section bar multiple row cavity is transversely that monolayer alignment or multilayer are arranged.
4. method according to claim 3, it is characterized in that, on each cavity, comprise at least one resonance hole, on described resonance hole, be equipped with resonant column, between cavity, be provided with coupling aperture, on described coupling aperture, be equipped with coupling adjusting screw(rod), described coupling adjusting screw(rod) can move along described upper cover plate or the upper and lower spiral of lower cover.
5. method according to claim 4, it is characterized in that, between adjacent cavity, be provided with adjacent coupled hole, on described adjacent coupled hole, be equipped with adjacent coupled adjusting screw(rod), between separate space, be provided with separate space coupling aperture, on described separate space coupling aperture, be equipped with separate space coupling adjusting screw(rod), described adjacent coupled adjusting screw(rod) and separate space coupling adjusting screw(rod) can move along upper cover plate or the upper and lower spiral of lower cover.
6. according to the method described in any one in claim 1-5, it is characterized in that, described frequency selector comprises: filter, mixer, splitter and duplexer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466986.2A CN103811838A (en) | 2012-11-15 | 2012-11-15 | Method for manufacturing frequency selector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210466986.2A CN103811838A (en) | 2012-11-15 | 2012-11-15 | Method for manufacturing frequency selector |
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| Publication Number | Publication Date |
|---|---|
| CN103811838A true CN103811838A (en) | 2014-05-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210466986.2A Pending CN103811838A (en) | 2012-11-15 | 2012-11-15 | Method for manufacturing frequency selector |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0508735B1 (en) * | 1991-04-12 | 1996-11-06 | Lk-Products Oy | Microwave filter |
| CN1545164A (en) * | 2003-11-18 | 2004-11-10 | 庄昆杰 | Low-loss high-selectivity and high-power multicavity filter |
| CN2879537Y (en) * | 2006-03-07 | 2007-03-14 | 摩比天线技术（深圳）有限公司 | Filter reinforced coupling structure |
| CN102361115A (en) * | 2011-09-30 | 2012-02-22 | 深圳市大富科技股份有限公司 | Cavity filter and production method thereof |
-
2012
- 2012-11-15 CN CN201210466986.2A patent/CN103811838A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0508735B1 (en) * | 1991-04-12 | 1996-11-06 | Lk-Products Oy | Microwave filter |
| CN1545164A (en) * | 2003-11-18 | 2004-11-10 | 庄昆杰 | Low-loss high-selectivity and high-power multicavity filter |
| CN2879537Y (en) * | 2006-03-07 | 2007-03-14 | 摩比天线技术（深圳）有限公司 | Filter reinforced coupling structure |
| CN102361115A (en) * | 2011-09-30 | 2012-02-22 | 深圳市大富科技股份有限公司 | Cavity filter and production method thereof |
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Application publication date: 20140521 |