CN101237076A - Expansion method for duplex power capacity - Google Patents
Expansion method for duplex power capacity Download PDFInfo
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- CN101237076A CN101237076A CNA2008100070121A CN200810007012A CN101237076A CN 101237076 A CN101237076 A CN 101237076A CN A2008100070121 A CNA2008100070121 A CN A2008100070121A CN 200810007012 A CN200810007012 A CN 200810007012A CN 101237076 A CN101237076 A CN 101237076A
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Abstract
The present invention discloses a method for expanding duplexer power capacity, which is used for duplexers. The method increases the power capacity of a cavity by setting a dielectric slab on a predetermined position inside the cavity. The application of the method overcomes the defects that: in the prior art, when the power capacity of a cavity duplexer is increased, the cost rises, and other indexes are caused to deteriorate at the same time when the diameter of a resonant column is increased; the method can improve duplexer power capacity as well as the margin of duplexer power capacity and save cost, so as to enhance the stability and safety of system work.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of extending method of duplex device power capacity.
Background technology
For wireless base station or little base station, wireless power transmitters such as repeater, because its applied environment comprises temperature, height above sea level, the terminal coupling, multiple different factors such as system signal modulation format, so as the parts such as cavity body filter of medium (for example in system, use with air, the cavity duplexer of wireless base station front end etc.) time, the problem that the input power that will occur bearing is different, especially the base station system of CDMA, its working signal is non-constant-amplitude signal, the instantaneous power of this working signal is different and constantly different according to active user's quantity, has higher peak power and average power ratio.
In above-mentioned base station system, under some condition, when input power surpassed a certain limit value, the air dielectric of cavity body filter will be excessive because of input power, and the field intensity that excites in cavity is excessive, thereby the phenomenon of breakdown discharge causes system communication to be obstructed.Power capacity described here just is meant, and the breakdown maximal input of air dielectric can not take place under this specific environment for use and condition.Power capacity be a kind of electricity function index also be a kind of safe performance indexes, can operate as normal for wireless system, most important, so when the cavity duplexer designs, except that considering other conventional index, the consideration of this index of power capacity also is necessary.
At present, in the wireless base station or the radio-frequency front-end of system equipments such as little base station, repeater, generally can use a kind of with the cavity body filter of air as medium, for example, duplexer etc., forward emitting power signal and reverse received signal are carried out filtering, and separate forward and reverse signal are realized the transmission duplex function simultaneously.The power capacity that with the air is the cavity duplexer of medium is one group of correlative, as mentioned above, it can change with environment for use and condition, place at height above sea level, the easier air dielectric that occurs of the filter of wireless base station radio-frequency front-end is subjected to powerful field intensity effect breakdown, causes system to work.
At present, when the power capacity of design cavity duplexer, consider product cost, weight and reliability requirement, general all is the volume that suitably increases cavity, increases power capacity.But, in real system is used, also existing requires the module electrical performance indexes good, volume is but wanted little contradiction, so when given volume, single cavity volume is also certain, this moment is with regard to power, the diameter that need to strengthen the resonance post comes effectively reducing the value of (diameter of the diameter of resonant cavity/resonance post), thereby increases power capacity.The shortcoming of doing like this is that volume increases will directly cause the rising of cost, and limit by the base station system requirement, and the volume of cavity body filter can not unconfinedly increase, and when size Control is inappropriate, also occurs the phenomenons such as higher mode that we do not expect easily; In addition when given volume, the diameter that increases the resonance post also can worsen other index of cavity duplexer etc. after to a certain degree.
So far, propose as yet to improve the technical scheme that power capacity is also taken other performance index simultaneously into account.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of expansion scheme of duplex device power capacity, expands only to solve in the correlation technique by increasing cavity volume and resonance column diameter that cost that power capacity caused increases and the problem of mis-behave.
According to embodiments of the invention, provide a kind of extending method of duplex device power capacity.
This method is used for duplexer, wherein, duplexer comprises cavity, be arranged at resonance post in the cavity, be positioned at resonance post top and cover the top cover of cavity from the top, it is characterized in that, by the precalculated position in cavity the power capacity that dieelctric sheet improves cavity is set.
Wherein, the precalculated position comprise between resonance post and the top cover, the inwall of resonance post.
Before dieelctric sheet is set, further comprise: steps A, the volume of cavity are set to the maximum of the volume range of communication system requirement; Step B changes the diameter of resonance post according to the performance index of communication system.
At this moment, when dieelctric sheet is set, according to the power capacity of communication system requirement and the dimensional parameters of regulating the dieelctric sheet of setting by the power capacity that steps A and step B reach.
Under situation about dieelctric sheet being arranged between resonance post and the top cover, dimensional parameters comprises internal diameter, external diameter, the thickness of dieelctric sheet, and wherein, the thickness of dieelctric sheet is no more than the distance between resonance post and the top cover.And, dieelctric sheet is fixed on the resonance post in the mode that can lead.Particularly, can dieelctric sheet be fixed on the resonance post by conducting resinl.
In addition, the ratio of the diameter of the diameter of cavity and resonance post is more than or equal to 1.65 and smaller or equal to 3.6.Dieelctric sheet comprises: FR4, potsherd.
By technique scheme of the present invention, when having overcome the power capacity of the increase cavity duplexer that exists in the prior art, cost rises, and the defective that causes other index to worsen when strengthening the resonance column diameter; Can improve duplex device power capacity, and improve the surplus of duplex device power capacity, save cost, thereby strengthen the stability and the fail safe of system works.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the extending method of the duplex device power capacity of the embodiment of the invention;
Fig. 2 is the structural representation of the duplexer when not increasing dieelctric sheet; And
Fig. 3 is the structural representation to the duplexer behind the duplexer increase dieelctric sheet shown in Figure 2.
Embodiment
A kind of extending method of duplex device power capacity is provided in the present embodiment.
This method is used for duplexer, wherein, duplexer comprises cavity, be arranged at resonance post in the cavity, be positioned at resonance post top and cover the top cover of cavity from the top, it is characterized in that, by the precalculated position in cavity the power capacity that dieelctric sheet improves cavity is set.
Wherein, the precalculated position comprise between resonance post and the top cover, the inwall of resonance post.
Before dieelctric sheet is set, further comprise: steps A, the volume of cavity are set to the maximum of the volume range of communication system requirement; Step B changes the diameter of resonance post according to the performance index of communication system.
At this moment, when dieelctric sheet is set, according to the power capacity of communication system requirement and the dimensional parameters of regulating the dieelctric sheet of setting by the power capacity that steps A and step B reach.
Under situation about dieelctric sheet being arranged between resonance post and the top cover, dimensional parameters comprises internal diameter, external diameter, the thickness of dieelctric sheet, and wherein, the thickness of dieelctric sheet is no more than the distance between resonance post and the top cover.And, dieelctric sheet is fixed on the resonance post in the mode that can lead.Particularly, can dieelctric sheet be fixed on the resonance post by conducting resinl.
In addition, the ratio of the diameter of the diameter of cavity and resonance post is more than or equal to 1.65 and smaller or equal to 3.6.Dieelctric sheet comprises: FR4, potsherd.
When practical application, can realize that power expands according to processing shown in Figure 1: (1) increases cavity volume to greatest extent in the desired scope of communication system; (2) after volume is increased to greatest extent, under the prerequisite that satisfies the system communication index, increase the diameter of resonance post; (3) in cavity, optionally, between resonance post and cover plate, increase dieelctric sheet.
Two steps of A, B are in the volume range that communication system requires, and utilize the cavity volume and the resonance column diameter that increase to improve power capacity as much as possible; Step C can not improve under the situation of power capacity after this two step is finished again, continue to increase the power capacity of cavity,, make its stable operation to satisfy the requirement that communication system is used, do like this and can when guaranteeing system performance index, further improve the expansion of power capacity.
Usually the dieelctric sheet type of usefulness has FR4, potsherd etc., and the position that adds dieelctric sheet is had plenty of between resonance post and cover plate, and also the meeting that has is added in resonance column wall etc., is that example is described to increase the FR4 dieelctric sheet between resonance post and cover plate below.
It is the duplexer of medium with the air that Fig. 2 shows one, according to the present invention, can increase cylindrical dieelctric sheet at its top, and the structure of this duplexer as shown in Figure 3 behind the increase dieelctric sheet.In conjunction with Fig. 2 and Fig. 3, the overall diameter size of dieelctric sheet 103 is suitable with the diameter of resonance post 102, the internal diameter of middle bore size and resonance post 102 is suitable, thickness is as the criterion to the distance between the cover plate with resonance post 102, concrete size can be adjusted according to the required index that satisfies power capacity, specifically implements as follows: 1, after the index Design of finishing a duplexer routine, for improving power capacity, in the volume range that communication system requires, increase the volume of cavity 101 to greatest extent earlier; 2, finish 1 step after, suitably increase the diameter of resonance post 102, can satisfy design objective with other electrical performance indexes is prerequisite, guarantees that index does not worsen; 3, add dieelctric sheet 103 in each resonance post upper end of transmitting terminal, fix with conducting resinl between dieelctric sheet 103 and the resonance post 102.Wherein, the field intensity numerical value that in duplexer shown in Figure 2, obtains and after duplexer shown in Figure 2 is set up dieelctric sheet, obtain duplexer shown in Figure 3 after the field intensity numerical value that therefrom obtains as shown in table 1.
| E Field[V/m] (before adding dieelctric sheet) | E Field[V/m] (after adding dieelctric sheet) | |
| 1 | 3.6481e+003 | 2.3946e+003 |
| 2 | 3.4201e+003 | 2.2449e+003 |
| 3 | 3.1921e+003 | 2.0953e+003 |
| 4 | 2.9641e+003 | 1.9456e+003 |
| 5 | 2.7361e+003 | 1.7960e+003 |
| 6 | 2.5081e+003 | 1.6463e+003 |
| 7 | 2.2801e+003 | 1.4966e+003 |
| 8 | 2.0521e+003 | 1.3470e+003 |
| 9 | 1.8241e+003 | 1.1973e+003 |
| 10 | 1.5961e+003 | 1.0476e+003 |
| 11 | 1.3680e+003 | 8.9798e+003 |
| 12 | 1.1400e+003 | 7.4832e+003 |
| 13 | 9.1203e+002 | 5.9865e+002 |
| 14 | 6.8402e+002 | 4.4889e+002 |
| 15 | 4.5601e+002 | 2.9933e+002 |
| 16 | 2.2801e+002 | 1.4966e+002 |
| 17 | 0.0000e+000 | 0.0000e+000 |
Table 1
Wherein, be that same position in duplexer measures corresponding to the field intensity value of same sequence number.By with in the table 1 corresponding to before the adding dieelctric sheet of each sequence number and the two columns values that add behind the dieelctric sheet compare as can be seen, obviously reduced the field intensity in the duplexer after adding dieelctric sheet, especially at the maximum in these two row, promptly, locate in the position (the easiest breakdown position) that adds dieelctric sheet, field intensity value 2.3946e+003 after adding the preceding field intensity value 3.6481e+003 of dieelctric sheet and adding dieelctric sheet, field intensity is effectively reduced as can be seen, and then has significantly improved the power capacity of duplexer.
And, can determine the size of the dieelctric sheet that increased according to increasing the power capacity that is reached behind cavity volume and the resonance column diameter.
And; can be under different condition; use difform dieelctric sheet; also can be added in different places, make actual implementation procedure more succinct, more effective; guarantee duplexer in use; make system works safer more stable, so long as adopt dieelctric sheet to realize improving the method for duplex device power capacity, all should protection scope of the present invention and so on.
In sum, by means of technical scheme of the present invention, when having overcome the power capacity of the increase cavity duplexer that exists in the prior art, cost rises, and the defective that causes other index to worsen when strengthening the resonance column diameter; Can improve duplex device power capacity, and improve the surplus of duplex device power capacity, save cost, thereby strengthen the stability and the fail safe of system works.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (9)
1. the extending method of a duplex device power capacity, described duplexer comprises cavity, be arranged at resonance post in the described cavity, be positioned at described resonance post top and cover the top cover of described cavity from the top, it is characterized in that, the power capacity that dieelctric sheet improves described cavity is set by the precalculated position in described cavity.
2. expansion method according to claim 1 is characterized in that, described precalculated position comprises between described resonance post and the described top cover, the inwall of described resonance post.
3. expansion method according to claim 1 and 2 is characterized in that, before described dieelctric sheet is set, further comprises:
Steps A, the volume of described cavity are set to the maximum of the volume range of communication system requirement;
Step B changes the diameter of described resonance post according to the performance index of described communication system.
4. expansion method according to claim 3, it is characterized in that, when described dieelctric sheet is set, according to the power capacity of described communication system requirement and the dimensional parameters of regulating the described dieelctric sheet of setting by the power capacity that described steps A and described step B reach.
5. expansion method according to claim 4, it is characterized in that, under situation about described dieelctric sheet being arranged between described resonance post and the described top cover, described dimensional parameters comprises internal diameter, external diameter, the thickness of described dieelctric sheet, wherein, the thickness of described dieelctric sheet is no more than the distance between described resonance post and the described top cover.
6. expansion method according to claim 5 is characterized in that, described dieelctric sheet is fixed on the described resonance post in the mode that can lead.
7. expansion method according to claim 6 is characterized in that, by conducting resinl described dieelctric sheet is fixed on the described resonance post.
8. expansion method according to claim 3 is characterized in that, the ratio of the diameter of the diameter of described cavity and described resonance post is more than or equal to 1.65 and smaller or equal to 3.6.
9. according to each described expansion method in the claim 1,2,4,5,6,7 and 8, it is characterized in that described dieelctric sheet comprises: FR4, potsherd.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100070121A CN101237076A (en) | 2008-01-24 | 2008-01-24 | Expansion method for duplex power capacity |
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| CNA2008100070121A CN101237076A (en) | 2008-01-24 | 2008-01-24 | Expansion method for duplex power capacity |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010063210A1 (en) * | 2008-12-03 | 2010-06-10 | 中兴通讯股份有限公司 | Technological method for manufacturing duplexer and duplexer |
| CN101964436B (en) * | 2009-07-23 | 2013-07-03 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN101645525B (en) * | 2009-08-07 | 2013-09-11 | 深圳市大富科技股份有限公司 | Cavity body filter |
| CN108964679A (en) * | 2017-05-18 | 2018-12-07 | 中兴通讯股份有限公司 | Power capacity method for improving, device and equipment |
| CN114204234A (en) * | 2021-12-27 | 2022-03-18 | 井冈山大学 | Small-size medium loading broadband filter |
-
2008
- 2008-01-24 CN CNA2008100070121A patent/CN101237076A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010063210A1 (en) * | 2008-12-03 | 2010-06-10 | 中兴通讯股份有限公司 | Technological method for manufacturing duplexer and duplexer |
| CN101964436B (en) * | 2009-07-23 | 2013-07-03 | 深圳市大富科技股份有限公司 | Cavity filter |
| CN101645525B (en) * | 2009-08-07 | 2013-09-11 | 深圳市大富科技股份有限公司 | Cavity body filter |
| CN108964679A (en) * | 2017-05-18 | 2018-12-07 | 中兴通讯股份有限公司 | Power capacity method for improving, device and equipment |
| CN114204234A (en) * | 2021-12-27 | 2022-03-18 | 井冈山大学 | Small-size medium loading broadband filter |
| CN114204234B (en) * | 2021-12-27 | 2022-10-21 | 井冈山大学 | Small-size medium loading broadband filter |
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Application publication date: 20080806 |