CN201927690U - Feedback device of cavity filter - Google Patents
Feedback device of cavity filter Download PDFInfo
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- CN201927690U CN201927690U CN2010206685724U CN201020668572U CN201927690U CN 201927690 U CN201927690 U CN 201927690U CN 2010206685724 U CN2010206685724 U CN 2010206685724U CN 201020668572 U CN201020668572 U CN 201020668572U CN 201927690 U CN201927690 U CN 201927690U
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- 230000000694 effects Effects 0.000 abstract description 21
- 238000006880 cross-coupling reaction Methods 0.000 abstract description 12
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Abstract
The utility model relates to a feedback device of a cavity filter. A resonance space at the center in a base of the cavity filter is provided with an antenna port, and the two sides of the resonance space are respectively provided with a signal output/input side, while a plurality of resonance cavities which are arranged in sequence are respectively arranged among the antenna port and the output/input side at the two sides; a channel for communicating an initial resonance cavity and a final resonance cavity is arranged on a cavity body clapboard between the initial resonance cavity and the final resonance cavity, so that cross coupling can be generated to adjust and compensate the component of the belt-stopping frequency; then a cover plate covers the outer side of the resonance space of the base, and as a plurality of adjustors are arranged on the cover plate, the adjustment of the frequency and bandwidth is carried out by extending into the resonance spaces, so that cross coupling is generated among the plurality of resonance spaces which are arranged in sequence so as to achieve the purpose of feedback effect, and the signal transmission and the efficacy of the designed frequency band are gained.
Description
Technical field
The utility model relates to a kind of feedback device of cavity filter, the a plurality of resonant cavities of You Zhike to arranging in regular turn, produce the adjacent cavity dividing plate of cross-couplings between initial resonant cavity and last resonant cavity, the passage of perforation is set, reach the purpose that cross-couplings reaches feedback effects, gain signal transmission and designed frequency range usefulness.
Background technology
The prosperity of communications industry now, carry out the emission of signal by wired or wireless mode, receive, to finish the purpose of signal transmission, and a considerable ring in the wireless communication industry, and the channel of radio communication is the communication carrier hotly contested spot often, also because channel resource is very limited, then cause the telecommunications dealer of the communications industry that the transmission service is provided, all make full use of limited frequency range resource, to seek the best settling mode of message capacity and communication quality, therefore in order to make full use of limited frequency range resource, no matter be between transceiver frequency channel or the different system operation frequency range between, the adjacent reality of its channel is very approaching, but requires the high-isolation effect, keeping the good communication quality, but the also relative degree of difficulty that causes cavity filter or the design of cavity filter tool high-isolation function.
And the logical cavity filter (or duplexer) of general band, pass through for the energy in a certain frequency range, and desire with the energy attenuation outside this frequency range to reach the effect of isolation, yet cavity filter also only can't block energy with frequency fully, the engineer is devoted to reduce the energy of frequency outside the passband, but often cause transmitting signal only with the instability of frequency, thereby the designer is by the mode of signal feedback, this is only readjusted with the energy in the frequency range, present applied cavity filter (or duplexer), see also Fig. 5, shown in Figure 6, existing cavity filter A (duplexer) internal resonance space A0 is provided with a plurality of resonant cavity A01, and between adjacent resonant cavity A01, be provided with the conduit A1 that runs through, utilize antenna port A2 reception (or emission) signal of resonant space A0, in each resonant cavity A01 through resonant space A0, produce filter action, and transmit by the signal output/input A3 of both sides, but signal is by each resonant cavity A01 the time, the signal of decay forms scattering easily, in Fig. 6
(| S (1,3) |) dpx and-DB (| S (2,3) |) dpx is respectively the low frequency of duplexer and the curve that high-frequency signal is represented, wherein-DB (| S (2,3) |) the dpx curve, but for exceeding only between zone outside the range of receiving (between the hatched example areas) of 11.06～11.18GHz, 11.59～11.71GHz, its insert loss (Insertion Loss) between-129.3DB～-117DB and-114.5DB～-125.3DB, can't be received, disturb the signal of cavity filter A to receive or the transmission instability.
Therefore, to how to solve present cavity filter (duplexer) when receiving and transmitting signal, signal can't be maintained receivable definite value scope, and the number of writing transmission problem of unstable, be the relevant manufacturer that is engaged in the industry and the direction place of improvement that the design people desires most ardently.
Summary of the invention
The design people is because above-mentioned problem and shortcoming, be to collect related data, via assessing in many ways and considering, and to engage in the many years of experience of the industry accumulation, via constantly studying and revising, beginning is designed this kind and can the formation cross-couplings reach feedback effects between initial and last resonant cavity, is born with the utility model patent of gain signal transmission with the cavity filter feedback device of designed frequency range quality.
Main purpose of the present utility model is to be: the pedestal of this cavity filter, resonant space in inside center is provided with antenna port, both sides also are respectively equipped with the output/input side of signal, and the plural resonant cavity of arranging in regular turn is set respectively, and on the cavity dividing plate between initial resonant cavity and the last resonant cavity, the passage that is provided with perforation can produce cross-couplings, to adjust compensation only with the component of frequency, again in the resonant space outside mask overlay of pedestal, and be provided with plural adjuster by cover plate, can stretch into the adjusting of carrying out frequency in the resonant space, reach and between the plural resonant cavity of arranging in regular turn, produce the purpose that cross-couplings reaches feedback effects, the usefulness of gain signal transmission and designed frequency range.
Secondary objective of the present utility model is to be: in the resonant space of this pedestal, by antenna port between the output/input side of both sides, be respectively equipped with a plurality of resonant cavities of seven progression, and be seven grades of last resonant cavities in regular turn by the antenna port both sides, six grades of resonant cavities, the Pyatyi resonant cavity, the level Four resonant cavity, three grades of resonant cavities, secondary resonant cavity and initial one-level resonant cavity, and be communicated to both sides output/input side by the initial one-level resonant cavity in both sides, and at initial one-level resonant cavity, the cavity dividing plate of seven grades of last resonant cavities, be provided with the passage of perforation, for initial one-level resonant cavity, seven grades of last resonant cavities form cross-couplings and reach feedback effects.
For achieving the above object, the utility model provides a kind of feedback device of cavity filter, comprise pedestal, cover plate, this pedestal is interior for being provided with resonant space, and be provided with antenna port in the resonant space, both sides also are respectively equipped with output/input side that signal transmits, again in the resonant space outside mask overlay of pedestal, and cover plate is provided with a plurality of adjusters that stretch in the resonant space, wherein, the resonant space of this pedestal by antenna port between the output/input side of both sides, a plurality of resonant cavities of arranging in regular turn are set respectively, and on each cavity dividing plate of each initial resonant cavity and the resonant cavity that each is last, are provided with perforation respectively and produce cross-linked passage.
Preferably, be respectively equipped with the resonant cavity of seven progression of arranging in regular turn between the antenna port of this resonant space and the both sides output/input side, the resonant cavity of this seven progression comprises seven grades of last resonant cavities, six grades of resonant cavities, Pyatyi resonant cavity, level Four resonant cavity, three grades of resonant cavities, secondary resonant cavity and initial one-level resonant cavities, and each the cavity dividing plate between each initial one-level resonant cavity and the seven grades of resonant cavities that each is last is respectively equipped with the passage that connects each initial one-level resonant cavity and seven grades of resonant cavities that each is last.
Preferably, this resonant space is by seven grades of last resonant cavities, six grades of resonant cavities, Pyatyi resonant cavity, level Four resonant cavity, three grades of resonant cavities, secondary resonant cavity and initial one-level resonant cavities are set respectively between the output/input side of antenna port both sides to both sides in regular turn.
Preferably, the signal that is respectively equipped with perforation between any two adjacent resonant cavities of this resonant space is led the way.
The utility model is primarily aimed at the feedback device design of cavity filter; utilize the pedestal of cavity filter; between the antenna port and both sides output/input side of resonant space; be respectively equipped with a plurality of resonant cavities of arranging in regular turn; and at first; cavity dividing plate between last resonant cavity; be provided with and connect at first; the passage of last resonant cavity; and can reach signal at first; between last resonant cavity; producing cross-linked feedback effect is main key protection point; forgone part is available; deamplification feeds back again; to adjust compensation only with the component of frequency; promote the stability of the signal that receives or launch; and can promote the quality of the signal receiver tool received signal that is installed on cavity filter, be the signal of cavity filter to be received or emission has the advantage that stable cross-couplings reaches feedback effects.
Description of drawings
Fig. 1 is a stereo appearance figure of the present utility model;
Fig. 2 is a three-dimensional exploded view of the present utility model;
Fig. 3 is a pedestal vertical view of the present utility model;
Fig. 4 is filtering signal figure of the present utility model;
Fig. 5 is the vertical view of existing cavity filter;
Fig. 6 is the filtering signal figure of existing cavity filter.
Description of reference numerals: 1-pedestal; The 10-resonant space; 134-level Four resonant cavity; The 11-antenna port; 135-Pyatyi resonant cavity; 12-output/input side; Six grades of resonant cavities of 136-; The 13-resonant cavity; Seven grades of resonant cavities of 137-; 131-one-level resonant cavity; 14-cavity dividing plate; 132-secondary resonant cavity; The 140-passage; Three grades of resonant cavities of 133-; The 2-cover plate; The 20-perforation; 211-frequency adjusting lever; The 21-adjuster; The A-cavity filter; The A0-resonant space; The A2-antenna port; The A01-resonant cavity; A3-output/input; The A1-conduit.
Embodiment
For reaching above-mentioned purpose and effect, technological means that the utility model adopted and structure thereof, accompanying drawing illustrates in detail that with regard to preferred embodiment of the present utility model its feature and function are as follows now, understands fully helping.
See also Fig. 1-shown in Figure 4, be stereo appearance figure of the present utility model, three-dimensional exploded view, pedestal vertical view, filtering signal figure, find out that by knowing shown in the figure cavity filter of the present utility model comprises pedestal 1, cover plate 2, wherein:
This pedestal 1 central interior position is provided with resonant space 10, and be provided with antenna port 11 at resonant space 10 middle positions, and resonant space 10 both sides are to be respectively equipped with output/input side 12 that signal transmits, and by antenna port 11 between the both sides output/input side 12, be respectively equipped with a plurality of resonant cavities 13 of arranging in regular turn, and the one-level resonant cavity 131 that each is initial, each cavity dividing plate 14 of seven grades of resonant cavities 137 that each is last, be respectively equipped with passage 140 and run through each initial one-level resonant cavity 131, seven grades of resonant cavities 137 that each is last, between any two adjacent resonant cavities 13, the signal that is provided with perforation leads the way 15 again.
This cover plate 2 surfaces are for being provided with a plurality of perforation 20, and a plurality of perforation 20 can supply a plurality of frequency adjusting levers 211 of adjuster 21 to wear respectively.
Above-mentioned each member is when assembling, resonant space 10 outside mask overlays 2 at pedestal 1, and utilize adjuster 21 on the cover plate 2, with a plurality of frequency adjusting levers 211, in resonant space 10, transfer and move, to adjust the frequency and the frequency range of resonant space 10 inside, and but rapid adjustment is to required frequency range interval, transfer in resonant space 10 by a plurality of frequency adjusting levers 211 again and move, and then the reverse coupling effect in the adjustment resonant space 10, and cooperate pedestal 1 at each initial one-level resonant cavity 131, each cavity dividing plate 14 between each seven grades of last resonant cavity 137, be respectively equipped with passage 140 and connect each initial one-level resonant cavity 131, seven grades of resonant cavities 137 that each is last, produce cross-linked feedback effect, and by pedestal 1, cover plate constitutes cavity filter of the present utility model for 2 groups.
And in the resonant space 10 of said base 1, be provided with a plurality of resonant cavities 13 that are symmetrical expression and arrange in regular turn, and a plurality of resonant cavities 13 are by antenna port 11 both sides, in regular turn with seven grades of resonant cavities 137 of symmetrical expression, six grades of resonant cavities 136, Pyatyi resonant cavity 135, level Four resonant cavity 134, three grades of resonant cavities 133, secondary resonant cavity 132, the 131 adjacent arrangements that continue of one-level resonant cavity, and be connected with signal output/input side 12 respectively to both sides by each one-level resonant cavity 131, form circulation, the signal transmission path of the formula of unrolling is to promote the resonance of signal in each resonant cavity 13, the harmonic wave effect.
And the utility model cavity filter is when carrying out the Filtering Processing of signal, the antenna port 11 of pedestal 1 is received the signal of (or emission), 13 transmission of each resonant cavity in resonant space 10, signal through each resonant cavity 13 was led the way 15 o'clock, by the adjuster on the cover plate 2 21, with a plurality of frequency adjusting levers 211, in resonant cavity 13, transfer and move, to adjust the frequency and the frequency range of resonant cavity 13 inside, and but rapid adjustment is to required frequency range interval, and then the cross-coupling effect in the adjustment resonant cavity 13, each the initial one-level resonant cavity 131 that cooperates antenna port 11 both sides simultaneously, 137 of each seven grades of last resonant cavities, each passage 140 that connects forms cross-linked effect, produce the effect of signal feedback, in the signal with the part decay, available signal feeds back again, to adjust compensation only with the component of frequency, and can promote quality (as: the radio communication base station of the signal receiver tool received signal that cavity filter is installed, satellite communication equipment or remote microwave dual-mode antenna etc.), in Fig. 4
(| S (1,3) |) dpx and-DB (| S (2,3) |) dpx is respectively the low frequency of duplexer and the curve that high-frequency signal is represented, wherein-DB (| S (2,3) |) the dpx curve, the insertion loss of the signal that is received (Insertion Loss) but within the range of receiving (between the hatched example areas) that ends 11.06～11.18GHz, 11.59～11.71GHz between zone, for between-69.17DB～-67.42DB and-67.04DB～-68.5DB, can receive for stable, and then the stabilization signal transmission is not subjected to influence, the interference of other signals.
Therefore, the above only is preferred embodiment of the present utility model, non-so limit to claim of the present utility model, cavity filter of the present utility model, resonant space 10 by pedestal 1 is in the antenna port 11 of middle position, and 12 of the output/input sides of both sides signal, be respectively equipped with a plurality of resonant cavities 13, and in each initial one-level resonant cavity 131, on each cavity dividing plate 14 of seven grades of resonant cavities 137 that each is last, the passage 140 of Guan Tonging respectively, can reach by each passage 140 and connect each initial one-level resonant cavity 131, seven grades of resonant cavities 137 that each is last, produce the purpose of cross-linked feedback effect respectively, and the signal stabilization degree of lifting transmission, and reach the good filtering of pedestal 1 tool of cavity filter, the function of feedback, to adjust compensation only with the component of frequency, can promote the signal receiver that is installed on cavity filter, quality with received signal, the usefulness that gain signal receives or launches, so can reach the structure of aforementioned effect such as, device is contained by the utility model all should, simple and easy modification of this kind and equivalent structure change, all should in like manner be contained in the claim of the present utility model, close and give Chen Ming.
The feedback device of above-mentioned the utility model cavity filter has following advantage in practical application, when implementing, as:
(1) pedestal 1 at the antenna port 11 of resonant space 10 to 12 of both sides output/input sides, a plurality of resonant cavities 13 of arranging in regular turn are set, and each initial one-level resonant cavity 131, seven grades of resonant cavities 137 that each is last are provided with the passage 140 of perforation at each cavity dividing plate 14, and for signal 137 of each initial one-level resonant cavity 131, seven grades of resonant cavities that each is last, form cross-couplings respectively and reach feedback effects, stabilization signal transmits, and can promote the quality of the signal receiver tool received signal that is installed on cavity filter.
Therefore; the utility model is primarily aimed at the feedback device design of cavity filter; utilize the pedestal of cavity filter; between the antenna port and both sides output/input side of resonant space; be respectively equipped with a plurality of resonant cavities of arranging in regular turn; and at first; cavity dividing plate between last resonant cavity; be provided with and connect at first; the passage of last resonant cavity; and can reach signal at first; between last resonant cavity; producing cross-linked feedback effect is main key protection point; forgone part is available; deamplification feeds back again; to adjust compensation only with the component of frequency; promote the stability of the signal that receives or launch; and can promote the quality of the signal receiver tool received signal that is installed on cavity filter; be only to make the signal reception or the emission of cavity filter have the advantage that stable cross-couplings reaches feedback effects; need to prove; the above only is preferred embodiment of the present utility model; non-so promptly limit to claim of the present utility model; so the simple and easy modification and the equivalent structure that use the utility model specification and accompanying drawing content to do such as change; all should in like manner be contained in the claim of the present utility model, close and give Chen Ming.
In sum, the feedback device of the above-mentioned cavity filter of the utility model can reach its effect and purpose, really so the utility model really is the utility model of a practicality excellence when using, for meeting the application important document of utility model patent, filing an application in the whence in accordance with the law, expects that examining committee grants accurate this case early, to ensure designer's arduous utility model, if an ancient unit of weight office examine committee have any check doubtful, the indication of please writing to us without sparing, settled the doing one's utmost of designer cooperates, and the true feeling moral is just.
Claims (4)
1. the feedback device of a cavity filter, comprise pedestal, cover plate, this pedestal is interior for being provided with resonant space, and be provided with antenna port, both sides in the resonant space and be respectively equipped with output/input side that signal transmits, again in the resonant space outside mask overlay of pedestal, and cover plate is provided with a plurality of adjusters that stretch in the resonant space, it is characterized in that:
The resonant space of this pedestal between the output/input side of both sides, is provided with a plurality of resonant cavities of arranging in regular turn by antenna port respectively, and is provided with perforation respectively and produces cross-linked passage on each cavity dividing plate of each initial resonant cavity and the resonant cavity that each is last.
2. the feedback device of cavity filter according to claim 1, it is characterized in that, be respectively equipped with the resonant cavity of seven progression of arranging in regular turn between the antenna port of this resonant space and the both sides output/input side, the resonant cavity of this seven progression comprises seven grades of last resonant cavities, six grades of resonant cavities, the Pyatyi resonant cavity, the level Four resonant cavity, three grades of resonant cavities, secondary resonant cavity and initial one-level resonant cavity, and each the cavity dividing plate between each initial one-level resonant cavity and the seven grades of resonant cavities that each is last is respectively equipped with the passage that connects each initial one-level resonant cavity and seven grades of resonant cavities that each is last.
3. the feedback device of cavity filter according to claim 2, it is characterized in that this resonant space is by seven grades of last resonant cavities, six grades of resonant cavities, Pyatyi resonant cavity, level Four resonant cavity, three grades of resonant cavities, secondary resonant cavity and initial one-level resonant cavities are set respectively between the output/input side of antenna port both sides to both sides in regular turn.
4. the feedback device of cavity filter according to claim 3 is characterized in that, the signal that is respectively equipped with perforation between any two adjacent resonant cavities of this resonant space is led the way.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206685724U CN201927690U (en) | 2010-12-20 | 2010-12-20 | Feedback device of cavity filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206685724U CN201927690U (en) | 2010-12-20 | 2010-12-20 | Feedback device of cavity filter |
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| Publication Number | Publication Date |
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| CN201927690U true CN201927690U (en) | 2011-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010206685724U Expired - Fee Related CN201927690U (en) | 2010-12-20 | 2010-12-20 | Feedback device of cavity filter |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103280614A (en) * | 2013-05-13 | 2013-09-04 | 苏州工业园区艺达精密机械有限公司 | High-isolation efficiency duplexer shell |
| CN105051972A (en) * | 2013-03-01 | 2015-11-11 | 日本电气株式会社 | Pole band-pass filter |
-
2010
- 2010-12-20 CN CN2010206685724U patent/CN201927690U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105051972A (en) * | 2013-03-01 | 2015-11-11 | 日本电气株式会社 | Pole band-pass filter |
| US10033075B2 (en) | 2013-03-01 | 2018-07-24 | Nec Corporation | Cross coupled band-pass filter |
| CN103280614A (en) * | 2013-05-13 | 2013-09-04 | 苏州工业园区艺达精密机械有限公司 | High-isolation efficiency duplexer shell |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20171220 |