CN110459849A - A method to reduce the resonance frequency - Google Patents
A method to reduce the resonance frequency Download PDFInfo
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- CN110459849A CN110459849A CN201910715354.7A CN201910715354A CN110459849A CN 110459849 A CN110459849 A CN 110459849A CN 201910715354 A CN201910715354 A CN 201910715354A CN 110459849 A CN110459849 A CN 110459849A
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- 238000000034 method Methods 0.000 title claims abstract description 23
- 230000007246 mechanism Effects 0.000 claims abstract description 22
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 36
- 229910052802 copper Inorganic materials 0.000 claims description 36
- 239000010949 copper Substances 0.000 claims description 36
- 230000008878 coupling Effects 0.000 claims description 35
- 238000010168 coupling process Methods 0.000 claims description 35
- 238000005859 coupling reaction Methods 0.000 claims description 35
- 239000004033 plastic Substances 0.000 claims description 12
- 239000000463 material Substances 0.000 claims description 7
- 239000004809 Teflon Substances 0.000 claims description 5
- 229920006362 Teflon® Polymers 0.000 claims description 5
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 5
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 5
- 239000002184 metal Substances 0.000 abstract description 3
- 229910052751 metal Inorganic materials 0.000 abstract description 3
- 230000009467 reduction Effects 0.000 abstract description 3
- 239000003990 capacitor Substances 0.000 abstract 1
- 238000001914 filtration Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 230000008602 contraction Effects 0.000 description 4
- 229920006356 Teflon™ FEP Polymers 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000010183 spectrum analysis Methods 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P1/00—Auxiliary devices
- H01P1/20—Frequency-selective devices, e.g. filters
- H01P1/207—Hollow waveguide filters
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Abstract
Description
技术领域technical field
本发明涉及滤波器技术领域,尤其涉及一种降低谐振频率的方法。The invention relates to the technical field of filters, in particular to a method for reducing resonance frequency.
背景技术Background technique
滤波器是一种选频装置,可以使信号中特定的频率成分通过,而极大地衰减其他频率成分;利用滤波器的这种选频作用,可以滤除干扰噪声或进行频谱分析。The filter is a frequency selection device, which can pass specific frequency components in the signal and greatly attenuate other frequency components; using this frequency selection function of the filter, it can filter out interference noise or perform spectrum analysis.
在传统滤波器设计过程中,降频多采用带有法兰盘式结构的谐振子实现所需频率范围,但当遇到频率要求较低、功率要求较大的情况下,设计上必须保持金属谐振柱法兰盘与盖板之间的距离以获得所需功率指标,这种情况下便无法满足指标的频率要求,因此,一种带有功率指标而设计的降频装置便成为所需。In the process of traditional filter design, resonators with flange structure are often used for frequency reduction to achieve the required frequency range, but when encountering low frequency requirements and high power requirements, the design must maintain metal The distance between the resonant column flange and the cover plate is required to obtain the required power index. In this case, the frequency requirement of the index cannot be met. Therefore, a frequency reduction device designed with a power index becomes necessary.
发明内容Contents of the invention
本发明的目的是为了解决现有技术中的不足,而提出的一种降低谐振频率的方法。The object of the present invention is to propose a method for reducing the resonance frequency in order to solve the deficiencies in the prior art.
为了实现上述目的,本发明采用了如下技术方案:In order to achieve the above object, the present invention adopts the following technical solutions:
一种降低谐振频率的方法,包括主箱体、输入机构、输出机构、箱盖和第一谐振柱,所述输入机构和输出机构固定连接在主箱体侧壁,所述箱盖固定连接在主箱体顶部,所述主箱体内部连接有凸台,所述第一谐振柱通过螺钉与凸台固定连接,所述第一谐振柱上开设有通孔,所述通孔内连接有第二谐振柱,所述第二谐振柱上开设有第一凹槽,所述第一谐振柱上连接有圆台,所述圆台卡接在第一凹槽内,所述第二谐振柱顶部与箱盖相抵,所述箱盖上转动连接有第一调谐螺钉,所述第一调谐螺钉与第二谐振柱相配合。A method for reducing resonance frequency, comprising a main box body, an input mechanism, an output mechanism, a box cover and a first resonant column, the input mechanism and the output mechanism are fixedly connected to the side wall of the main box body, and the box cover is fixedly connected to On the top of the main box, a boss is connected inside the main box, and the first resonant column is fixedly connected to the boss by screws. A through hole is opened on the first resonant column, and a second Two resonant columns, the second resonant column is provided with a first groove, the first resonant column is connected with a circular platform, the circular platform is clamped in the first groove, the top of the second resonant column is connected to the box The cover is offset, and a first tuning screw is rotatably connected to the box cover, and the first tuning screw cooperates with the second resonant column.
优选的,所述主箱体内部开设有腔体,所述凸台连接在腔体内。Preferably, a cavity is opened inside the main box, and the boss is connected in the cavity.
优选的,所述腔体内连接有安装台,所述安装台上连接有塑料支撑件,所述塑料支撑件顶部通过塑料螺钉连接有电容耦合铜片,所述电容耦合铜片两端连接有支脚且与电容耦合铜片为一体成型。Preferably, a mounting platform is connected to the cavity, a plastic support is connected to the mounting platform, a capacitive coupling copper sheet is connected to the top of the plastic support via plastic screws, and feet are connected to both ends of the capacitive coupling copper sheet And it is integrally formed with the capacitive coupling copper sheet.
优选的,所述第二谐振柱的材料是PTFE,即特氟龙。Preferably, the material of the second resonance column is PTFE, ie Teflon.
优选的,所述主箱体顶部开设有第二凹槽,所述第二凹槽内开设有螺纹孔,所述箱盖通过螺钉固定连接在螺纹孔上。Preferably, a second groove is opened on the top of the main box, and a threaded hole is opened in the second groove, and the box cover is fixedly connected to the threaded hole by screws.
优选的,所述箱盖转动连接有第二调谐螺钉,所述第二调谐螺钉下端贯穿箱盖延伸至腔体内。Preferably, the case cover is rotatably connected with a second tuning screw, and the lower end of the second tuning screw extends through the case cover into the cavity.
优选的,所述输入机构包括输入接头、第一导杆和输入耦合铜片,所述输入接头固定连接在主箱体外侧壁,所述输入耦合铜片通过螺钉连接在谐振柱上,所述输入接头和输入耦合铜片通过第一导杆相连; 所述输出机构包括输出接头、第二导杆和输出耦合铜片,所述输出接头固定连接在主箱体外侧壁,所述输出耦合铜片通过螺钉连接在谐振柱上,所述输出接头和输出耦合铜片通过第二导杆相连。Preferably, the input mechanism includes an input connector, a first guide rod and an input coupling copper sheet, the input connector is fixedly connected to the outer wall of the main box, the input coupling copper sheet is connected to the resonant column by screws, the The input joint and the input coupling copper sheet are connected through the first guide rod; the output mechanism includes an output joint, a second guide rod and an output coupling copper sheet, the output joint is fixedly connected to the outer wall of the main box, and the output coupling copper The sheet is connected to the resonant column by screws, and the output joint and the output coupling copper sheet are connected by a second guide rod.
与现有技术相比,本发明提供了一种降低谐振频率的方法,具备以下有益效果:Compared with the prior art, the present invention provides a method for reducing the resonance frequency, which has the following beneficial effects:
1、该降低谐振频率的方法,通过将主箱体置于水平面上,通过输入接头接入外部信号,具体的为,信号经过第一导杆传递给输入耦合铜片,输入耦合铜片将信号传递给第一谐振柱,信号在第一谐振柱内经过滤波,由于在第一谐振柱上套接有第二谐振柱,并且第二谐振柱的材质主要为特氟龙PTFE、特氟龙FEP等高介电常数材料,由于第二谐振柱介电常数远大于空气的介电常数,使第一谐振柱与箱盖之间的电容量增大,进而实现降低频率的目的,更进一步的是,在箱盖上转动连接有第一调谐螺钉,可控制第一调谐螺钉在第二调谐柱内的伸缩量来进一步优化滤波质量;当信号经过一级滤波后进入腔体内,可控制转动连接在箱体上的第二调谐螺钉在腔体内的伸缩量来优化一级滤波后的信号,与此同时,由于在安装台上通过塑料螺钉连接有电容耦合铜片,并且电容耦合铜片两端连接的支脚延伸至腔体底部,从而提升在腔体内的信号滤波质量,在经过多级滤波得到纯净的信号后,经输出接头输出。1. The method for reducing the resonant frequency is to place the main box on a horizontal plane and connect the external signal through the input connector. Specifically, the signal is transmitted to the input coupling copper sheet through the first guide rod, and the input coupling copper sheet transmits the signal Passed to the first resonant column, the signal is filtered in the first resonant column, because the second resonant column is socketed on the first resonant column, and the material of the second resonant column is mainly Teflon PTFE, Teflon FEP Equal high dielectric constant materials, because the dielectric constant of the second resonant column is much greater than that of air, the capacitance between the first resonant column and the box cover is increased, thereby achieving the purpose of reducing the frequency, and further is , the first tuning screw is rotated and connected on the box cover, which can control the expansion and contraction of the first tuning screw in the second tuning column to further optimize the filtering quality; The expansion and contraction of the second tuning screw on the box body in the cavity optimizes the signal after the first stage of filtering. The feet extend to the bottom of the cavity, thereby improving the quality of signal filtering in the cavity. After multi-stage filtering to obtain a pure signal, it is output through the output connector.
附图说明Description of drawings
图1为本发明提出的一种降低谐振频率的方法的结构示意图一;Fig. 1 is a structural schematic diagram 1 of a method for reducing resonance frequency proposed by the present invention;
图2为本发明提出的一种降低谐振频率的方法的结构示意图二;Fig. 2 is a structural schematic diagram 2 of a method for reducing the resonance frequency proposed by the present invention;
图3为本发明提出的一种降低谐振频率的方法的结构示意图三;Fig. 3 is a structural schematic diagram three of a method for reducing the resonance frequency proposed by the present invention;
图4为本发明提出的一种降低谐振频率的方法的结构示意图四;Fig. 4 is a structural schematic diagram 4 of a method for reducing the resonance frequency proposed by the present invention;
图5为本发明提出的一种降低谐振频率的方法的结构示意图五。FIG. 5 is a structural schematic diagram 5 of a method for reducing the resonance frequency proposed by the present invention.
图中:1、主箱体;101、安装台;102、第二凹槽;1021、螺纹孔;103、输入接头;1031、第一导杆;1032、输入耦合铜片;104、输出接头;1041、第二导杆;1042、输出耦合铜片;2、箱盖;3、第一谐振柱;301、第二谐振柱;3011、第一调谐螺钉;3012、第二调谐螺钉;3013、第一凹槽;3014、圆台;3015、通孔;302、凸台;4、电容耦合铜片;401、支脚;402、塑料支撑件;403、塑料螺钉;5、腔体。In the figure: 1, the main box; 101, the installation platform; 102, the second groove; 1021, the threaded hole; 103, the input connector; 1031, the first guide rod; 1032, the input coupling copper sheet; 104, the output connector; 1041, the second guide rod; 1042, the output coupling copper sheet; 2, the case cover; 3, the first resonant column; 301, the second resonant column; 3011, the first tuning screw; 3012, the second tuning screw; 3013, the first 1 groove; 3014, round table; 3015, through hole; 302, boss; 4, capacitive coupling copper sheet; 401, leg; 402, plastic support; 403, plastic screw; 5, cavity.
具体实施方式Detailed ways
下面将结合本发明实施例中的附图,对本发明实施例中的技术方案进行清楚、完整地描述,显然,所描述的实施例仅仅是本发明一部分实施例,而不是全部的实施例。The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.
在本发明的描述中,需要理解的是,术语“上”、“下”、“前”、“后”、“左”、“右”、“顶”、“底”、“内”、“外”等指示的方位或位置关系为基于附图所示的方位或位置关系,仅是为了便于描述本发明和简化描述,而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作,因此不能理解为对本发明的限制。In describing the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", " The orientation or positional relationship indicated by "outside", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, so as to Specific orientation configurations and operations, therefore, are not to be construed as limitations on the invention.
实施例:Example:
参照图1-5,一种降低谐振频率的方法,包括主箱体1、输入机构、输出机构、箱盖2和第一谐振柱3,输入机构和输出机构固定连接在主箱体1侧壁,箱盖2固定连接在主箱体1顶部,主箱体1内部连接有凸台302,第一谐振柱3通过螺钉与凸台302固定连接,第一谐振柱3上开设有通孔3015,通孔3015内连接有第二谐振柱301,第二谐振柱301上开设有第一凹槽3013,第一谐振柱3上连接有圆台3014,圆台3014卡接在第一凹槽3013内,第二谐振柱301顶部与箱盖2相抵,箱盖2上转动连接有第一调谐螺钉3011,第一调谐螺钉3011与第二谐振柱301相配合。Referring to Figures 1-5, a method for reducing the resonance frequency includes a main box body 1, an input mechanism, an output mechanism, a box cover 2 and a first resonant column 3, and the input mechanism and the output mechanism are fixedly connected to the side wall of the main box body 1 , the box cover 2 is fixedly connected to the top of the main box body 1, the main box body 1 is connected with a boss 302 inside, the first resonant column 3 is fixedly connected with the boss 302 by screws, and a through hole 3015 is opened on the first resonant column 3, The second resonant column 301 is connected in the through hole 3015, the second resonant column 301 is provided with a first groove 3013, the first resonant column 3 is connected with a round platform 3014, the circular platform 3014 is clamped in the first groove 3013, the second The top of the second resonant column 301 is in contact with the case cover 2 , and the first tuning screw 3011 is rotatably connected to the case cover 2 , and the first tuning screw 3011 cooperates with the second resonant column 301 .
主箱体1内部开设有腔体5,凸台302连接在腔体5内。A cavity 5 is opened inside the main box body 1 , and the boss 302 is connected in the cavity 5 .
腔体5内连接有安装台101,安装台101上连接有塑料支撑件402,塑料支撑件402顶部通过塑料螺钉403连接有电容耦合铜片4,电容耦合铜片4两端连接有支脚401且与电容耦合铜片4为一体成型。A mounting platform 101 is connected to the cavity 5, and a plastic support 402 is connected to the mounting platform 101. The top of the plastic support 402 is connected with a capacitive coupling copper sheet 4 through a plastic screw 403, and the two ends of the capacitive coupling copper sheet 4 are connected with feet 401 and It is integrally formed with the capacitive coupling copper sheet 4 .
第二谐振柱301的材料是PTFE,即特氟龙。The material of the second resonant column 301 is PTFE, ie Teflon.
主箱体1顶部开设有第二凹槽102,第二凹槽102内开设有螺纹孔1021,箱盖2通过螺钉固定连接在螺纹孔1021上。The top of the main box body 1 is provided with a second groove 102, and a threaded hole 1021 is provided in the second groove 102, and the case cover 2 is fixedly connected to the threaded hole 1021 by screws.
箱盖2转动连接有第二调谐螺钉3012,第二调谐螺钉3012下端贯穿箱盖2延伸至腔体5内。The case cover 2 is rotatably connected with a second tuning screw 3012 , and the lower end of the second tuning screw 3012 penetrates the case cover 2 and extends into the cavity 5 .
输入机构包括输入接头103、第一导杆1031和输入耦合铜片1032,输入接头103固定连接在主箱体1外侧壁,输入耦合铜片1032通过螺钉连接在第一谐振柱3上,输入接头103和输入耦合铜片1032通过第一导杆1031相连;The input mechanism includes an input connector 103, a first guide rod 1031 and an input coupling copper sheet 1032. The input connector 103 is fixedly connected to the outer wall of the main box 1, and the input coupling copper sheet 1032 is connected to the first resonance column 3 by screws. 103 and the input coupling copper sheet 1032 are connected through the first guide rod 1031;
输出机构包括输出接头104、第二导杆1041和输出耦合铜片1042,输出接头104固定连接在主箱体1外侧壁,输出耦合铜片1042通过螺钉连接在第一谐振柱3上,输出接头104和输出耦合铜片1042通过第二导杆1041相连。The output mechanism includes an output connector 104, a second guide rod 1041 and an output coupling copper sheet 1042. The output connector 104 is fixedly connected to the outer wall of the main box 1, and the output coupling copper sheet 1042 is connected to the first resonance column 3 by screws. The output connector 104 and the output coupling copper sheet 1042 are connected through a second guide rod 1041 .
工作原理:本发明中,将主箱体1置于水平面上,通过输入接头103接入外部信号,具体的为,信号经过第一导杆1031传递给输入耦合铜片1032,输入耦合铜片1032将信号传递给第一谐振柱3,信号在第一谐振柱3内经过滤波,由于在第一谐振柱3上套接有第二谐振柱301,并且第二谐振柱301的材质主要为特氟龙PTFE、特氟龙FEP等高介电常数材料,由于第二谐振柱301介电常数远大于空气的介电常数,使第一谐振柱3与箱盖2之间的电容量增大,进而实现降低频率的目的,更进一步的是,在箱盖2上转动连接有第一调谐螺钉3011,可控制第一调谐螺钉3011在第二谐振柱301内的伸缩量来进一步优化滤波质量;当信号经过一级滤波后进入腔体5内,可控制转动连接在箱盖2上的第二调谐螺钉3012在腔体5内的伸缩量来优化一级滤波后的信号,与此同时,由于在安装台101上通过塑料螺钉403连接有电容耦合铜片4,并且电容耦合铜片4两端连接的支脚401延伸至腔体5底部,从而提升在腔体5内的信号滤波质量,在经过多级滤波得到纯净的信号后,经输出接头104输出,其原理与输入接头103原理相反,在此不做赘述。Working principle: In the present invention, the main box 1 is placed on a horizontal plane, and the external signal is connected through the input connector 103. Specifically, the signal is transmitted to the input coupling copper sheet 1032 through the first guide rod 1031, and the input coupling copper sheet 1032 The signal is transmitted to the first resonant column 3, and the signal is filtered in the first resonant column 3, because the second resonant column 301 is socketed on the first resonant column 3, and the material of the second resonant column 301 is mainly Teflon Long PTFE, Teflon FEP and other high dielectric constant materials, because the dielectric constant of the second resonant column 301 is much greater than the dielectric constant of air, the capacitance between the first resonant column 3 and the case cover 2 increases, and then To achieve the purpose of reducing the frequency, furthermore, the first tuning screw 3011 is connected to the box cover 2, which can control the expansion and contraction of the first tuning screw 3011 in the second resonant column 301 to further optimize the filtering quality; when the signal After the primary filter, it enters the cavity 5, and can control the expansion and contraction of the second tuning screw 3012 connected to the case cover 2 in the cavity 5 to optimize the signal after the primary filter. At the same time, due to the installation The capacitive coupling copper sheet 4 is connected to the platform 101 through plastic screws 403, and the legs 401 connected at both ends of the capacitive coupling copper sheet 4 extend to the bottom of the cavity 5, thereby improving the signal filtering quality in the cavity 5. After multi-stage After the pure signal is obtained by filtering, it is output through the output connector 104 , the principle of which is opposite to that of the input connector 103 , and will not be repeated here.
以上所述,仅为本发明较佳的具体实施方式,但本发明的保护范围并不局限于此,任何熟悉本技术领域的技术人员在本发明揭露的技术范围内,根据本发明的技术方案及其发明构思加以等同替换或改变,都应涵盖在本发明的保护范围之内。The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.
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