CN204577550U - A kind of tunable high power Waveguide bandstop filter - Google Patents
A kind of tunable high power Waveguide bandstop filter Download PDFInfo
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- CN204577550U CN204577550U CN201520349381.4U CN201520349381U CN204577550U CN 204577550 U CN204577550 U CN 204577550U CN 201520349381 U CN201520349381 U CN 201520349381U CN 204577550 U CN204577550 U CN 204577550U
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Abstract
The utility model discloses a kind of tunable high power Waveguide bandstop filter, comprise the main wave-guide cavity wave that has left interface and right interface, at least two structures are identical and have the secondary wave-guide cavity wave of an interface and tuning structure; Two opposite flanks of described main wave-guide cavity wave are equipped with rectangle coupling aperture, and the interface size of the size of rectangle coupling aperture and described secondary wave-guide cavity wave is suitable; Described secondary wave-guide cavity wave is fixed on the rectangle coupling aperture place of main wave-guide cavity wave, and the cavity of main wave-guide cavity wave is connected with the cavity of secondary wave-guide cavity wave.The utility model has the advantages such as power capacity is large, practical, operating frequency is tunable, and the novel structure of whole filter, lightweight, for follow-up system microminiaturization, integratedly provide favourable support.
Description
Technical field
The utility model relates to the filter being applied to radio frequency and microwave regime, particularly relates to a kind of tunable high power Waveguide bandstop filter.
Background technology
Along with the development of wireless communication technology and the propelling of global IT application, a large amount of radio signals all needs to pass through radio frequency, the communication systems such as microwave are transmitted, and the communication system of different frequency range only could normally work in each self-corresponding frequency band, this just needs the filter in communication system in He Ne laser, have higher accuracy, to realize unwanted interference, the noise signal such as spuious and parasitic has larger decay, the signal needed is transmitted in a communications system with decay little as far as possible, but, along with the development of civil telecommunications system and military communication system, a large amount of informational needs transmits between the communication system of limited frequency band resource, this just requires that communication system has transmission speed faster, wider transmission bandwidth and stronger antijamming capability, this determines to a certain extent has the filter of directly impact must have more excellent performance on the property indices of communication system, particularly in applications such as microwave surveies of deep space, because the frequency of microwave signal is high, energy is large, and the frequency band had is wider, power capacity was less and the filter that selecting frequency characteristic is more single cannot meet its actual needs at all in the past.Therefore, in order to adapt to the development of the applications such as microwave survey of deep space, filter that is miniaturized, tunable, high power capacity is studied most important.
Utility model content
The purpose of this utility model is to provide a kind of tunable high power Waveguide bandstop filter, the leakage wall-like structure had according to the main wave-guide cavity wave of filter is on the impact of space electrical field, to reach the object improving filter input, output-resistor matched form, thus improve the power capacity of filter, simultaneously, under the effect of tuning structure, realize the tunable of filter operating frequency.
For achieving the above object, the utility model is by the following technical solutions:
A kind of tunable high power Waveguide bandstop filter, comprises the main wave-guide cavity wave that has left interface and right interface, and at least two structures are identical and have the secondary wave-guide cavity wave of an interface and tuning structure; Two opposite flanks of described main wave-guide cavity wave are equipped with coupling aperture, and the interface size of the size of coupling aperture and described secondary wave-guide cavity wave is suitable; Described secondary wave-guide cavity wave is fixed on the coupling aperture place of main wave-guide cavity wave, and the cavity of main wave-guide cavity wave is connected with the cavity of secondary wave-guide cavity wave.
Preferably, described main wave-guide cavity wave comprises the first housing and the second housing that are fixed together, and two housings includes left connecting portion, pars intermedia and right connecting portion; The left end of the left connecting portion of the first housing and the left connecting portion of the second housing is respectively equipped with the first left half Waveguide interface and the second left half Waveguide interface, and the first left half Waveguide interface and the second left half Waveguide interface form the left interface of main wave-guide cavity wave jointly; The right-hand member of the right connecting portion of the first housing and the right connecting portion of the second housing is respectively equipped with the first right half Waveguide interface and the second right half Waveguide interface, and the first right half Waveguide interface and the second right half Waveguide interface form the right interface of main wave-guide cavity wave jointly; On the leading flank of the first housing mid-section and on the leading flank of the second housing mid-section, be provided with coupling aperture all successively from left to right, and the position of the coupling aperture on the first housing mid-section leading flank and the coupling aperture on the second housing mid-section leading flank is crisscross arranged, the spacing on the spacing on the first housing mid-section leading flank between adjacent coupled mouth and the second housing mid-section leading flank between adjacent coupled mouth is the odd-multiple of 1/4 guide wavelength.
Preferably, described secondary wave-guide cavity wave comprises tuning structure and has the cavity of an interface, and described tuning structure comprises the tuning screw be arranged on cavity side and the tuning screw matched, and the side being provided with tuning screw is vertical with face, interface place.
Preferably, described coupling aperture is rectangular, and the size of rectangle coupling aperture on the first housing mid-section leading flank, and to successively decrease setting along the middle part of the first housing mid-section to left end and right-hand member, on the second housing mid-section leading flank, the size of rectangle coupling aperture is all identical.
Preferably, be arranged on on the second housing mid-section leading flank on described first housing mid-section leading flank, the spacing between adjacent coupled mouth all adopts three times of 1/4 guide wavelength, i.e. 3/4 guide wavelength.
Preferably, the left and right interface of described main wave-guide cavity wave all adopts BJ70 type standard waveguide interface.
Preferably, the screw being equipped with screw on the leading flank of described first housing and the second housing, near the surrounding of upper and lower end and coupling aperture and matching.
Preferably, between described first housing and the second housing, and through to be threaded and/or welding manner is fixed together between each secondary wave-guide cavity wave with main wave-guide cavity wave.
The utility model is fixed together leakage wall type cavity body structure formed to the impact of space electrical field by the first housing and the second housing being provided with coupling aperture, thus improve the matched form of filter input, output-resistor, the insertion loss of filter is made to be less than 0.1dB, standing-wave ratio is less than 1.1, thus greatly improves the power capacity of filter; By the tuning structure on secondary wave-guide cavity wave, the actual operating frequency of filter can be changed within the specific limits, enhance the applicability of filter; Secondary wave-guide cavity wave is adopted to live apart main wave-guide cavity wave both sides, and the spacing between the secondary wave-guide cavity wave in the same side is the structure of 3/4 guide wavelength, avoid the problem that simply in one line caused performance of filter declines, filter is made to be greater than 110dB to take-up degree of suppression, significantly reduce the interference to receive channel, thus ensure that when high power transmitter normally works, do not affect the normal operation of receiving equipment.In addition, the BJ70 standard waveguide interface that filter adopts, is convenient to the integral installation of filter, and the novel structure of whole filter, lightweight, for follow-up system microminiaturization, integratedly provide favourable support.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the structural representation of the main wave-guide cavity wave of the utility model;
Fig. 3 is the first shell structure schematic diagram of the main waveguide cavity of the utility model;
Fig. 4 is the second shell structure schematic diagram of the main waveguide cavity of the utility model;
Fig. 5 is the structural representation of the left interface of the main wave-guide cavity wave of the utility model;
Fig. 6 is the structural representation of the secondary wave-guide cavity wave of the utility model;
Fig. 7 is the structural representation of the utility model tuning screw.
Embodiment
As shown in Fig. 1, the utility model comprises a main wave-guide cavity wave 1 secondary wave-guide cavity wave 2 identical with at least two structures, and multiple secondary wave-guide cavity wave 2 is separately fixed on the forward and backward side of main wave-guide cavity wave 1.
As shown in Figures 2 to 5, described main wave-guide cavity wave 1 adopts the cavity body structure with left interface 1-1 and right interface 1-2, comprise the first housing 3 and the second housing 4 be fixed together, and two housings includes left connecting portion, pars intermedia and right connecting portion, the left end of the first housing left connecting portion 3-1 and the second housing left connecting portion 4-1 is respectively equipped with the first left half Waveguide interface 5-1 and the second left half Waveguide interface 5-2, and the first left half Waveguide interface 5-1 and the second left half Waveguide interface 5-2 forms the left interface 1-1 of main wave-guide cavity wave 1 jointly, the right-hand member of the first housing right connecting portion 3-3 and the second housing right connecting portion 4-3 is respectively equipped with the first right half Waveguide interface 6-1 and the second right half Waveguide interface 6-2, and the first right half Waveguide interface 6-1 and the second right half Waveguide interface 6-2 forms the right interface 1-2 of main wave-guide cavity wave 1 jointly, and described left interface 1-1 and right interface 1-2 all adopts BJ70 type standard waveguide interface, the leading flank of the first housing mid-section 3-2 is provided with from left to right successively before running through, the rectangle coupling aperture 7-1 of trailing flank, the leading flank of the second housing mid-section 4-2 is provided with from left to right successively before running through, the rectangle coupling aperture 7-2 of trailing flank, and the size of rectangle coupling aperture 7-1 on the first housing mid-section 3-2 leading flank, to successively decrease along the middle part of the first housing mid-section 3-2 to left end and right-hand member setting, on second housing mid-section 4-2 leading flank, the size of rectangle coupling aperture 7-2 is all identical, the position of the rectangle coupling aperture 7-2 on the rectangle coupling aperture 7-1 on the first housing mid-section 3-2 leading flank and the second housing mid-section 4-2 leading flank is crisscross arranged, and in the present embodiment, on first housing mid-section 3-2, on the spacing of adjacent rectangle coupling aperture 7-1 and the second housing mid-section 4-2, the spacing of adjacent rectangle coupling aperture 7-2 is three times of 1/4 guide wavelength, i.e. 3/4 guide wavelength, the cavity body structure with left interface 1-1 and right interface 1-2 is made to present leakage wall-like structure, in addition, the the first screw 8-1 running through forward and backward side and the screw matched is equipped with, the first housing 3 and the second housing 4 to be fixed together through the first screw 8-1 and the screw that matches on the leading flank of the first housing 3 and the second housing 4, near the surrounding of upper and lower end face place and coupling aperture 7-1 and rectangle coupling aperture 7-2.
As shown in Figure 6 and Figure 7, described secondary wave-guide cavity wave 2 comprises tuning structure and cylindrical cavities 9, tuning structure comprises the tuning screw 10 be arranged on cylindrical cavities 9 upper surface and the tuning screw 11 matched, with on the orthogonal left surface in cylindrical cavities 9 upper surface, be provided with a notch 9-1 suitable with the size of described coupling aperture 7-1 and rectangle coupling aperture 7-2, and notch 9-1 is provided with the corresponding interface 9-2, interface 9-2 is provided with the second screw 8-2 suitable with the size of the first screw 8-1, so that by secondary wave-guide cavity wave 2 through the second screw 8-2, first screw 8-1 and the screw matched, be arranged on coupling aperture 7-1 and the rectangle coupling aperture 7-2 place of main wave-guide cavity wave 1, the cavity of winner's wave-guide cavity wave 1 is connected with the cavity of secondary wave-guide cavity wave 2.
The utility model is the tunable Waveguide bandstop filter be made up of main wave-guide cavity wave 1 and secondary wave-guide cavity wave 2, the signal transmitting terminal of communication system transmitter is arranged on by the left interface 1-1 or right interface 1-2 with BJ70 type standard waveguide interface, when communication system outwards transmits through transmitter, wait to signal and enter tunable Waveguide bandstop filter through left interface 1-1 or right interface 1-2, and fringe magnetic field is formed around the rectangle coupling aperture 7-1 and rectangle coupling aperture 7-2 of main wave-guide cavity wave 1, now be arranged on the secondary wave-guide cavity wave 2 at rectangle coupling aperture 7-1 and rectangle coupling aperture 7-2 place under the effect of fringe magnetic field, define a series of waveguide resonator with characteristic admittance, thus, have the rectangle coupling aperture 7-1 of inductance characteristic and rectangle coupling aperture 7-2 and there is capacitance characteristic the acting in conjunction of secondary wave-guide cavity wave 2 under, the stopband of tunable Waveguide bandstop filter is made correspondingly to occur single high attenuation peak, thus the suppression achieved receiving band signal spur performance.
Under the acting in conjunction of the rectangle coupling aperture 7-1 that main wave-guide cavity wave 1 of the present utility model changes at a series of even width and rectangle coupling aperture 7-2, the leakage wall type cavity body structure formed, the characteristic impedance of filter and load impedance is made to have good matching degree, thus allow the insertion loss of filter be less than 0.1dB, standing-wave ratio is less than 1.1, and then substantially increases the power capacity of filter; Simultaneously, be arranged on a series of secondary wave-guide cavity wave 2 at rectangle coupling aperture 7-1 and rectangle coupling aperture 7-2 place owing to having the effect of waveguide resonator, in addition, spacing between adjacent pair wave-guide cavity wave 2 is 3/4 guide wavelength, thus ensure that the degree of suppression of filter to take-up is greater than 110dB, significantly reduce the interference of parasitic signal to receive channel; Be arranged on the tuning screw 10 on secondary wave-guide cavity wave 2 side and the tuning screw 11 that matches with it together constitutes tuning structure, the degree of depth of tuning screw 10 is screwed in by changing tuning screw 11, realize the object changing filter real work frequency range, thus ensure the practicality of filter.
In addition, the utility model is applied to deep space microwave sounding field, considers the problems such as microwave high power dissipation radiation, after debugging reaches expectation index, all carries out vacuum welding to the edge of all parts contact-making surface.
Claims (8)
1. a tunable high power Waveguide bandstop filter, is characterized in that: comprise the main wave-guide cavity wave that has left interface and right interface, and at least two structures are identical and have the secondary wave-guide cavity wave of an interface and tuning structure; Two opposite flanks of described main wave-guide cavity wave are equipped with coupling aperture, and the interface size of the size of coupling aperture and described secondary wave-guide cavity wave is suitable; Described secondary wave-guide cavity wave is fixed on the coupling aperture place of main wave-guide cavity wave, and the cavity of main wave-guide cavity wave is connected with the cavity of secondary wave-guide cavity wave.
2. tunable high power Waveguide bandstop filter according to claim 1, is characterized in that: described main wave-guide cavity wave comprises the first housing and the second housing that are fixed together, and two housings includes left connecting portion, pars intermedia and right connecting portion; The left end of the left connecting portion of the first housing and the left connecting portion of the second housing is respectively equipped with the first left half Waveguide interface and the second left half Waveguide interface, and the first left half Waveguide interface and the second left half Waveguide interface form the left interface of main wave-guide cavity wave jointly; The right-hand member of the right connecting portion of the first housing and the right connecting portion of the second housing is respectively equipped with the first right half Waveguide interface and the second right half Waveguide interface, and the first right half Waveguide interface and the second right half Waveguide interface form the right interface of main wave-guide cavity wave jointly; On the leading flank of the first housing mid-section and on the leading flank of the second housing mid-section, be provided with coupling aperture all successively from left to right, and the position of the coupling aperture on the first housing mid-section leading flank and the coupling aperture on the second housing mid-section leading flank is crisscross arranged, the spacing on the spacing on the first housing mid-section leading flank between adjacent coupled mouth and the second housing mid-section leading flank between adjacent coupled mouth is the odd-multiple of 1/4 guide wavelength.
3. tunable high power Waveguide bandstop filter according to claim 1 and 2, it is characterized in that: described secondary wave-guide cavity wave comprises tuning structure and has the cavity of an interface, described tuning structure comprises the tuning screw be arranged on cavity side and the tuning screw matched, and the side being provided with tuning screw is vertical with face, interface place.
4. tunable high power Waveguide bandstop filter according to claim 1 and 2, it is characterized in that: described coupling aperture is rectangular, and the size of rectangle coupling aperture on the first housing mid-section leading flank, to successively decrease setting along the middle part of the first housing mid-section to left end and right-hand member, on the second housing mid-section leading flank, the size of rectangle coupling aperture is all identical.
5. tunable high power Waveguide bandstop filter according to claim 2, it is characterized in that: be arranged on described first housing mid-section leading flank with on the second housing mid-section leading flank, spacing between adjacent coupled mouth all adopts three times of 1/4 guide wavelength, i.e. 3/4 guide wavelength.
6. tunable high power Waveguide bandstop filter according to claim 1 and 2, is characterized in that: the left and right interface of described main wave-guide cavity wave all adopts BJ70 type standard waveguide interface.
7. tunable high power Waveguide bandstop filter according to claim 2, is characterized in that: the screw being equipped with screw on the leading flank of described first housing and the second housing, near the surrounding of upper and lower end and coupling aperture and matching.
8. tunable high power Waveguide bandstop filter according to claim 2, is characterized in that: between described first housing and the second housing, and through to be threaded and/or welding manner is fixed together between each secondary wave-guide cavity wave with main wave-guide cavity wave.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201520349381.4U CN204577550U (en) | 2015-05-27 | 2015-05-27 | A kind of tunable high power Waveguide bandstop filter |
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| CN201520349381.4U CN204577550U (en) | 2015-05-27 | 2015-05-27 | A kind of tunable high power Waveguide bandstop filter |
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| CN204577550U true CN204577550U (en) | 2015-08-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868211A (en) * | 2015-05-27 | 2015-08-26 | 中国电子科技集团公司第二十七研究所 | Tunable high power waveguide band-stop filter |
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- 2015-05-27 CN CN201520349381.4U patent/CN204577550U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104868211A (en) * | 2015-05-27 | 2015-08-26 | 中国电子科技集团公司第二十七研究所 | Tunable high power waveguide band-stop filter |
| CN104868211B (en) * | 2015-05-27 | 2017-11-10 | 中国电子科技集团公司第二十七研究所 | A kind of tunable high power Waveguide bandstop filter |
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Effective date of registration: 20220425 Address after: 450000 No. 36, boxue Road, Zhengzhou area (Zhengdong), pilot Free Trade Zone, Zhengzhou City, Henan Province Patentee after: Henan Fangda Space Information Technology Co.,Ltd. Address before: 450047 No. 71, middle hanghai Road, Zhengzhou City, Henan Province Patentee before: NO.27 RESEARCH INSTITUTE, CHINA ELECTRONICS TECHNOLOGY Group Corp. |