CN109066027B - Combiner filtering branching device - Google Patents
Combiner filtering branching device Download PDFInfo
- Publication number
- CN109066027B CN109066027B CN201811004209.XA CN201811004209A CN109066027B CN 109066027 B CN109066027 B CN 109066027B CN 201811004209 A CN201811004209 A CN 201811004209A CN 109066027 B CN109066027 B CN 109066027B
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- cavity
- filtering
- combiner
- filter
- power dividing
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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
- H01P1/208—Cascaded cavities; Cascaded resonators inside a hollow waveguide structure
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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
- H01P1/213—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies
- H01P1/2138—Frequency-selective devices, e.g. filters combining or separating two or more different frequencies using hollow waveguide filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
- H01P5/12—Coupling devices having more than two ports
Abstract
The invention provides a combining filtering shunt device which comprises a main cavity body; a combining cavity, a filtering cavity and a power dividing cavity are sequentially arranged in the main cavity; a combiner circuit board is arranged in the combiner cavity, the input end of the combiner circuit board is connected with an input joint arranged on one side of the main cavity, and the output end of the combiner circuit board is connected with the filtering cavity; the filter cavity is provided with a filter circuit, one end of the filter circuit is connected with the output end of the combiner circuit board, and the other end of the filter circuit is connected with the power dividing cavity; the input end of the power dividing cavity is connected with the filter circuit, and the other end of the power dividing cavity is connected with an output connector arranged on the other side of the main cavity. The combining, filtering and shunting device can reduce the volume of a radio frequency system.
Description
Technical Field
The invention relates to the technical field of power dividers, in particular to a combiner filtering and shunting device.
Background
With the increasing integration degree of radio frequency systems, higher requirements are also put forward on the volume of radio frequency devices, a filter is used as an important component of a common radio frequency system and plays a critical role on the quality of communication signals, the existing filter is generally an uplink system to a downlink system and is only used by connecting single systems in series, when the same system receives radio frequency signals of different systems, more filters are required to be combined, and the volume of the radio frequency system is increased.
Disclosure of Invention
In view of this, the present invention provides a combining, filtering and splitting device, which can reduce the volume of a radio frequency system.
The technical scheme of the invention is realized as follows:
a combining, filtering and shunting device comprises a main cavity;
a combining cavity, a filtering cavity and a power dividing cavity are sequentially arranged in the main cavity;
a combiner circuit board is arranged in the combiner cavity, the input end of the combiner circuit board is connected with an input joint arranged on one side of the main cavity, and the output end of the combiner circuit board is connected with the filtering cavity;
the filter cavity is provided with a filter circuit, one end of the filter circuit is connected with the output end of the combiner circuit board, and the other end of the filter circuit is connected with the power dividing cavity;
the input end of the power dividing cavity is connected with the filter circuit, and the other end of the power dividing cavity is connected with an output connector arranged on the other side of the main cavity.
Preferably, the filter circuit includes a plurality of resonators.
Preferably, a transmission line is arranged in the power divider cavity;
the transmission line is an impedance transformation section which is arranged in a step shape and is formed by changing the thickness of the transmission line from an input end to an output end in a step shape, and a high polymer medium material is filled between the transmission line and the cavity.
Preferably, the output end of the transmission line is provided with a rectangular groove, the tail part of the output connector is provided with a flat milling contact pin, and the output connector is connected with the rectangular groove through the flat milling contact pin.
Preferably, the input joint and the output joint are provided with waterproof platforms, and the joint of the input joint and the output joint and the main cavity is provided with a sealing ring.
The main cavity comprises a combining cavity, a filtering cavity and a power dividing cavity, radio frequency signals of different systems are input into the combining cavity to be combined and then output to the filtering cavity to be filtered, and then the radio frequency signals are divided to each part of the system through the power dividing cavity, so that the radio frequency signals of different systems received by the same system can be filtered through the device, and the size of a radio frequency system is effectively reduced.
Drawings
Fig. 1 is a schematic structural diagram of a combining, filtering and splitting device according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides a combining, filtering and splitting device, which includes a main cavity 1;
a combining cavity 2, a filtering cavity 3 and a power dividing cavity 4 are sequentially arranged in the main cavity 1;
a combiner circuit board is arranged in the combiner cavity 2, the input end of the combiner circuit board is connected with an input joint 5 arranged on one side of the main cavity, and the output end of the combiner circuit board is connected with the filtering cavity;
the filter cavity 3 is provided with a filter circuit, one end of the filter circuit is connected with the output end of the combiner circuit board, and the other end of the filter circuit is connected with the power dividing cavity;
the input end of the power dividing cavity 4 is connected with the filter circuit, and the other end of the power dividing cavity is connected with an output connector 6 arranged on the other side of the main cavity.
Therefore, the combining and filtering splitting device provided by the embodiment of the invention has the advantages that the main cavity comprises the combining cavity, the filtering cavity and the power dividing cavity, radio frequency signals of different systems are input into the combining cavity for combining and then output to the filtering cavity for filtering, and then the radio frequency signals of different systems received by the same system are split to each part of the system through the power dividing cavity, so that the radio frequency signals of different systems received by the same system can be filtered through the device, and the volume of the radio frequency system is effectively reduced.
In a preferred embodiment of the invention, the filter circuit comprises a plurality of resonators.
The dielectric filter is designed and manufactured by utilizing the characteristics of low loss, high dielectric constant, small frequency temperature coefficient, small thermal expansion coefficient, high power bearing and the like of a dielectric ceramic material, and is formed by a plurality of ladder-shaped circuits of longitudinal multistage series connection or parallel connection of long resonators. The filter has the characteristics of small insertion loss, good power resistance and narrow bandwidth, and is particularly suitable for the cascade coupling filtering of CT1, CT2, 900MHz, 1.8GHz, 2.4GHz and 5.8GHz, portable telephones, automobile telephones, wireless earphones, wireless microphones, radio stations, cordless telephones, integrated transceiving duplexers and the like.
In a preferred embodiment of the present invention, a transmission line is disposed in the power divider cavity;
the transmission line is an impedance transformation section which is arranged in a step shape and is formed by changing the thickness of the transmission line from an input end to an output end in a step shape, and a high polymer medium material is filled between the transmission line and the cavity.
The high polymer dielectric material is filled between the transmission line and the cavity, the transmission speed of the electromagnetic waves in the high polymer dielectric material is lower than that in the air, the length of each section of the impedance transformation section is a quarter wavelength according to the transmission line principle, the transmission speed of the electromagnetic waves in the high polymer dielectric material is reduced, the wavelength is reduced, the length of the impedance transformation section is reduced, the length of the cavity is reduced, and the material cost and the installation space are reduced.
In a preferred embodiment of the present invention, the output end of the transmission line is provided with a rectangular groove, the tail of the output connector is provided with a flat milling pin, and the output connector is connected to the rectangular groove through the flat milling pin.
When the output connector is connected with the transmission line through the contact hole, the flat milling contact pin is arranged at the tail of the output connector, so that the output connector can be conveniently connected with the transmission line, and the loss of the output connector and the transmission line can not be caused. The milling flat contact pin can be connected with the transmission line through various connection modes, and preferably, the milling flat contact pin is used for welding the transmission line.
In a preferred embodiment of the invention, the input joint and the output joint are provided with waterproof tables, and sealing rings are arranged at the connection positions of the input joint and the output joint and the main cavity.
In this application, through the dual protection of waterproof platform and sealing washer can improve the holistic waterproof performance of product, the protection level is high, long service life.
The main cavity comprises a combining cavity, a filtering cavity and a power dividing cavity, radio frequency signals of different systems are input into the combining cavity to be combined and then output to the filtering cavity to be filtered, and then the radio frequency signals are divided to each part of the system through the power dividing cavity, so that the radio frequency signals of different systems received by the same system can be filtered through the device, and the size of a radio frequency system is effectively reduced.
In summary, the embodiments of the present invention can at least achieve the following effects:
in the embodiment of the invention, the device can filter the radio frequency signals of different systems received by the same system, thereby effectively reducing the volume of the radio frequency system.
Finally, it is to be noted that: the above description is only a preferred embodiment of the present invention, and is only used to illustrate the technical solutions of the present invention, and not to limit the protection scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (5)
1. A combining, filtering and shunting device is characterized by comprising a main cavity;
a combining cavity, a filtering cavity and a power dividing cavity are sequentially arranged in the main cavity;
a combiner circuit board is arranged in the combiner cavity, the input end of the combiner circuit board is connected with an input joint arranged on one side of the main cavity, and the output end of the combiner circuit board is connected with the filtering cavity;
the filter cavity is provided with a filter circuit, one end of the filter circuit is connected with the output end of the combiner circuit board, and the other end of the filter circuit is connected with the power dividing cavity;
the input end of the power dividing cavity is connected with the filter circuit, and the other end of the power dividing cavity is connected with an output connector arranged on the other side of the main cavity.
2. The combined filter splitting device of claim 1, wherein the filter circuit includes a plurality of resonators.
3. The combined filter splitting device of claim 1, wherein a transmission line is disposed in the power splitting cavity;
the transmission line is an impedance transformation section which is arranged in a step shape and is gradually thickened from the input end to the output end, and a high polymer medium material is filled between the transmission line and the power dividing cavity.
4. The combiner filter splitting device according to claim 3, wherein the output end of the transmission line is provided with a rectangular slot, the tail of the output connector is provided with a milled flat pin, and the output connector is connected with the rectangular slot through the milled flat pin.
5. The combining, filtering and splitting device according to any one of claims 1-4, wherein said input connector and said output connector are provided with waterproof platforms, and sealing rings are provided at the connection of said input connector and said output connector with said main cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004209.XA CN109066027B (en) | 2018-08-30 | 2018-08-30 | Combiner filtering branching device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811004209.XA CN109066027B (en) | 2018-08-30 | 2018-08-30 | Combiner filtering branching device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109066027A CN109066027A (en) | 2018-12-21 |
| CN109066027B true CN109066027B (en) | 2020-05-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811004209.XA Active CN109066027B (en) | 2018-08-30 | 2018-08-30 | Combiner filtering branching device |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781080A (en) * | 1993-10-15 | 1998-07-14 | Murata Manufacturing Co., Ltd. | Dielectric duplexer |
| CN101188443A (en) * | 2007-06-28 | 2008-05-28 | 华为技术有限公司 | A power divider, power division device and RF device |
| CN202178372U (en) * | 2011-08-01 | 2012-03-28 | 南京广顺网络通信设备有限公司 | Combiner with coupling function |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623708U (en) * | 2009-11-20 | 2010-11-03 | 北京瑞夫艾电子有限公司 | Power transmission module for frequency-modulated broadcasting transmitter |
| CN202142627U (en) * | 2011-07-18 | 2012-02-08 | 江苏吴通通讯股份有限公司 | Multi-functional integrated radio frequency passive device |
| CN202384456U (en) * | 2011-12-26 | 2012-08-15 | 深圳市虹远通信有限责任公司 | Multi-frequency combiner |
| CN102547775B (en) * | 2012-02-29 | 2015-01-07 | 中邮科通信技术股份有限公司 | System and method for simultaneous indoor covering of multiple types of communication signals by utilizing CATV (community antenna television) cable |
| CN202998092U (en) * | 2012-10-29 | 2013-06-12 | 罗森伯格（上海）通信技术有限公司 | Measuring instrument |
| CN106533584A (en) * | 2016-11-25 | 2017-03-22 | 电子科技大学 | Forward passive intermodulation test system |
-
2018
- 2018-08-30 CN CN201811004209.XA patent/CN109066027B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5781080A (en) * | 1993-10-15 | 1998-07-14 | Murata Manufacturing Co., Ltd. | Dielectric duplexer |
| CN101188443A (en) * | 2007-06-28 | 2008-05-28 | 华为技术有限公司 | A power divider, power division device and RF device |
| CN202178372U (en) * | 2011-08-01 | 2012-03-28 | 南京广顺网络通信设备有限公司 | Combiner with coupling function |
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| Publication number | Publication date |
|---|---|
| CN109066027A (en) | 2018-12-21 |
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