CN115458893A - Tunable duplexer - Google Patents
Tunable duplexer Download PDFInfo
- Publication number
- CN115458893A CN115458893A CN202211275495.XA CN202211275495A CN115458893A CN 115458893 A CN115458893 A CN 115458893A CN 202211275495 A CN202211275495 A CN 202211275495A CN 115458893 A CN115458893 A CN 115458893A
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- cavity
- connector
- input port
- cover plate
- port
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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
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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
Abstract
The invention discloses a tunable duplexer, which relates to the technical field of communication and comprises the following components: the cover plate is buckled with the cavity; a connector is arranged on the side edge of the cavity; a first input port and a second input port are arranged on one side of the cavity, an output port is arranged on the other side of the cavity, and a coupling port is further arranged on the cavity; the first input port and the second input port are provided with a first connector and a second connector, the output port is provided with a third connector, and the coupling port is provided with a fourth connector; a partition wall is arranged in the cavity and divides the cavity into a first cavity and a second cavity; resonant columns are arranged in the first cavity and the second cavity; the cover plate is provided with a tuning screw rod, and the tuning screw rod is arranged corresponding to the resonance column. The cavity and the cover plate are buckled to form a sealed cavity structure, and the harmonic wave in each cavity is adjusted through the tuning screw rod, so that the effect of accurate tuning is achieved.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a tunable duplexer.
Background
The duplexer is the main accessory of the different-frequency duplex radio station and the relay station, and has the function of isolating the transmitted signal from the received signal and ensuring that the receiving and the transmitting can work normally at the same time. It is composed of two groups of band-stop filters with different frequencies to prevent the transmission of local transmitting signals to the receiver.
A duplexer, also called an antenna duplexer, is a special two-way three-terminal filter. The duplexer couples weak received signals and feeds larger transmitting power to the antenna, and requires that the two perform their functions independently without affecting each other.
In mobile communication, due to the sharing of multiple channels, in order to avoid intermodulation interference caused by radio frequency coupling between different channels and consider factors of economy, technology and construction site, a combiner is designed, signals of multiple different frequencies can be combined into one frequency and output, the combiner consists of a cavity resonator and a resonance column, the cavity resonator is a high-Q-value low-insertion-loss band-pass filter, and the resonance column is a three-fracture device with small forward loss (0.8 dB) and large reverse loss (20 dB).
However, most of the combiners circulating in the current market science and technology are single-frequency filters or duplexers, and these combiners cannot meet the requirements of the base station, and can not combine signals of more frequencies in order, which easily causes frequency disorder and coincidence, and even damages the combiner. The precise tuning function cannot be performed.
Disclosure of Invention
The present invention addresses the above-described deficiencies of the prior art by providing a tunable duplexer.
In order to solve the technical problems, the invention provides the following technical scheme:
a tunable duplexer, comprising:
the cover plate is buckled with the cavity; a connector is arranged on the side edge of the cavity;
a first input port and a second input port are arranged on one side of the cavity, an output port is arranged on the other side of the cavity, and a coupling port is further arranged on the cavity;
the first input port and the second input port are provided with a first connector and a second connector, the output port is provided with a third connector, and the coupling port is provided with a fourth connector;
a partition wall is arranged in the cavity and divides the cavity into a first cavity and a second cavity; resonant columns are arranged in the first cavity and the second cavity;
the cover plate is provided with a tuning screw rod, and the tuning screw rod is arranged corresponding to the resonance column.
The invention adopts the further technical scheme that a first fixed medium is arranged in the first cavity, and a flying rod is arranged on the first fixed medium; and a second fixed medium is arranged in the second cavity, and a second flying rod is arranged on the second fixed medium.
According to a further technical scheme, the lower end of a first fixing medium is provided with an installation groove for installing a first flying bar, the side edge of the first fixing medium is provided with a positioning groove, an installation screw hole is formed above the first fixing medium, and an installation bolt is arranged at a corresponding position on a cover plate.
According to a further technical scheme of the invention, a positioning bulge matched with a positioning groove of the first fixing medium is further arranged in the first cavity.
According to a further technical scheme of the invention, two ends of the first flying rod are provided with limiting rings.
The further technical scheme of the invention is that the first input port is an input port of 1710-1780MHZ, the second input port is an input port of 2110-2180MHZ, and the coupling port is a coupling port of 40 dB.
According to a further technical scheme of the invention, a groove is formed in the upper side of the cavity, a protrusion matched with the groove is formed in the edge of the lower side of the cover plate, and the cover plate and the cavity are clamped through the groove and the protrusion.
The technical scheme of the invention is that the partition wall is provided with mounting holes, and the cover plate is provided with mounting bolts corresponding to the mounting holes on the partition wall.
According to the further technical scheme, reinforcing ribs are arranged between the partition walls and the resonant columns.
The invention has the beneficial effects that:
1. the cavity and the cover plate are buckled to form a sealed cavity structure, an input interface is arranged on one side of the cavity, an output interface is arranged on the other side of the cavity, the two input interfaces are respectively connected with a first connector and a second connector, the first connector and the second connector are SMA connectors, a coupling port is further arranged on the input interface side, an output port is connected with a third connector, harmonic wave adjustment is carried out in each cavity through a tuning screw rod, other parameters or structures do not need to be changed, and the effect of accurate tuning is achieved.
2. The first flying rod and the second flying rod are used for suppressing zero points, ensuring the stability of signal transmission in the first cavity and the second cavity and enabling signals to be transmitted from the first input port or the second input port to the output port according to a preset path.
3. First flying bar passes through first fixed medium and fixes, and the second flying bar passes through the fixed medium of second and fixes, and first fixed medium and the fixed medium of second can improve the stability of first flying bar and second flying bar.
4. The both ends of first flying bar set up the spacing ring, prevent that first flying bar from taking place horizontal migration.
5. Set up the recess at cavity upside edge, the cooperation sets up the arch on the apron, makes things convenient for the lock of apron and cavity, improves the leakproofness of lock.
6. The partition wall is provided with the mounting hole, on one hand, the partition wall is connected with the mounting bolt on the cover plate, the edge above the cavity is also provided with the mounting hole, the mounting hole above the cavity is connected with the mounting bolt on the cover plate, the first cavity and the second cavity are sealed by screwing the mounting bolt, and gaps are prevented.
7. Set up the strengthening rib in the bottom of resonance post for support the resonance post, the strengthening rib extends to on the nearest partition wall of distance, consolidates the cavity bottom, has improved the anti deformability of cavity bottom, has slowed down the condition of casing atress deformation.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
Fig. 1 is a perspective view of a tunable duplexer in accordance with the present invention;
fig. 2 is a split structure diagram of the tunable duplexer according to the present invention;
FIG. 3 is an enlarged view of a portion of one embodiment of the present invention;
fig. 4 is a top view of a tunable duplexer provided by an embodiment of the present invention;
fig. 5 is a front view of a tunable duplexer provided by an embodiment of the present invention;
fig. 6 is a left side view of a tunable duplexer provided by an embodiment of the present invention;
fig. 7 is a right side view of a tunable duplexer provided by an embodiment of the present invention;
reference numerals:
100-cavity, 200-cover plate, 300-connector, 400-first fixing medium, 500-first flying bar, 600 second fixing medium, 700-second flying bar;
101-a first input port, 102-a second input port, 103-an output port, 104-a coupled port; 105 partitions, 106 resonant columns, 107 grooves; 151-first cavity, 152-second cavity, 153-mounting hole; 201-tuning screw, 202-mounting bolt; 301-first connector, 302-second connector, 302-third connector, 304-fourth connector; 401-mounting groove, 402-positioning groove, 403-mounting screw hole; 501-a limiting ring and 161-a reinforcing rib.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Referring to fig. 1 to 7, a tunable duplexer, comprising:
the connector comprises a cavity 100 and a cover plate 200, wherein the cover plate 200 is buckled with the cavity 100, and a connector 300 is arranged on the side edge of the cavity; a first input port 101 and a second input port 102 are arranged on one side of the cavity 100, an output port 103 is arranged on the other side of the cavity, and a coupling port 104 is further arranged on the cavity 100; a first connector 301 and a second connector 302 are arranged on the first input port 101 and the second input port 102, a third connector 302 is arranged on the output port 103, and a fourth connector 304 is arranged on the coupling port 104; a partition wall 105 is arranged in the chamber 100, and the partition wall 105 divides the chamber 100 into a first cavity 151 and a second cavity 152; the resonant columns 106 are arranged in the first cavity 151 and the second cavity 152; the cover plate 200 is provided with a tuning screw 201, and the tuning screw 201 is arranged corresponding to the resonance column 700.
In the embodiment of the invention, a sealed cavity structure is formed by buckling a cavity and a cover plate, an input interface is arranged on one side of the cavity, an output interface is arranged on the other side of the cavity, the number of the input interfaces is two, the two input interfaces are respectively connected with a first connector and a second connector, the first connector and the second connector are SMA connectors, a coupling port is further arranged on the input interface side, and an output port is connected with a third connector. When specifically using, when the input port is a plurality of, the partition wall can set up a plurality ofly, and every input port sets up cavity all the way through the partition wall respectively, specifically uses the design needs to be the standard. The harmonic wave adjustment is carried out in each cavity through the tuning screw rod, other parameters or structures do not need to be changed, and the effect of accurate tuning is achieved.
In the embodiment of the present invention, a first fixing medium 400 is disposed in the first cavity 151, and a first flying bar 500 is disposed on the first fixing medium; a second fixed medium 600 is disposed in the second cavity 152, and a second flying bar 700 is disposed on the second fixed medium 600. The first flying rod and the second flying rod are used for suppressing zero points, ensuring the stability of signal transmission in the first cavity and the second cavity and enabling signals to be transmitted from the first input port or the second input port to the output port according to a preset path.
First flying bar passes through first fixed medium and fixes, and the second flying bar passes through the fixed medium of second and fixes, and first fixed medium and the fixed medium of second can improve the stability of first flying bar and second flying bar.
Further, the lower extreme setting of first fixed medium 400 is used for installing first flying bar 500's mounting groove 401, the side of first fixed medium 400 sets up constant head tank 402, makes things convenient for the installation of first fixed medium, the top of first fixed medium 400 sets up installation screw 403, and the corresponding position sets up construction bolt 202 on the apron 200.
In the embodiment of the present invention, a positioning protrusion is further disposed inside the first cavity 151, and the positioning protrusion is matched with the positioning groove 402 of the first fixing medium 400, so as to mount the first fixing medium 400. The fixed reliability of first fixed medium has been improved to the setting of constant head tank and location arch, guarantees that first pole all the time the mounting groove presss from both sides tightly, can not lead to first pole because of the duplexer vibration to add the vibration to drop from the mounting groove by the dead weight, has further improved the stability of first pole and the stability of signal propagation.
Limiting rings 501 are arranged at two ends of the first flying bar 500 to prevent the first flying bar from moving horizontally. Realize the all-round spacing to first pole of flying through setting up spacing ring, constant head tank and location arch, guaranteed under any circumstance (vibration, rock etc.) to all can not lead to signal transmission to receive the influence because of first pole of flying is unstable.
The first input port 101 is an input port of 1710-1780MHz, the second input port 102 is an input port of 2110-2180MHz, and the coupled port 104 is a 40dB coupled port.
In the embodiment of the present invention, a groove 107 is disposed on the upper side of the chamber 10, a protrusion matching with the groove 107 is disposed on the lower edge of the cover plate 200, and the cover plate 200 and the chamber 100 are clamped by the groove 107 and the protrusion. The cover plate is buckled with the cavity, the groove is formed in the edge of the upper side of the cavity, the cover plate is provided with the protrusion in a matched mode, the cover plate is conveniently buckled with the cavity, and the tightness of buckling is improved.
The partition wall 105 is provided with mounting holes 153, and the cover plate 200 is provided with mounting bolts corresponding to the mounting holes 153 of the partition wall 105. The partition wall is provided with the mounting hole, on one hand, the partition wall is connected with the mounting bolt on the cover plate, the edge above the cavity is also provided with the mounting hole, the mounting hole above the cavity is connected with the mounting bolt on the cover plate, the first cavity and the second cavity are sealed by screwing the mounting bolt, and gaps are prevented.
In the embodiment of the present invention, the reinforcing ribs 161 are disposed between the partition walls 105 and the resonant columns 106. The bottom of the resonant column is provided with the reinforcing rib for supporting the resonant column, and the reinforcing rib extends to the partition wall closest to the resonant column to reinforce the bottom of the cavity, so that the deformation resistance of the bottom of the cavity is improved, and the stress deformation of the shell is relieved; the problem that the position of the resonance rod on the mounting column changes due to the deformation of the bottom of the cavity is prevented, the problem that the inner space of the cavity changes due to the deformation of the mounting surface is solved, the resonance characteristic of the duplexer is guaranteed, and the duplexer is prevented from losing efficacy.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. A tunable duplexer, comprising:
the cover plate is buckled with the cavity; a connector is arranged on the side edge of the cavity;
a first input port and a second input port are arranged on one side of the cavity, an output port is arranged on the other side of the cavity, and a coupling port is further arranged on the cavity;
the first input port and the second input port are provided with a first connector and a second connector, the output port is provided with a third connector, and the coupling port is provided with a fourth connector;
a partition wall is arranged in the cavity and divides the cavity into a first cavity and a second cavity; resonant columns are arranged in the first cavity and the second cavity;
and the cover plate is provided with a tuning screw rod, and the tuning screw rod is arranged corresponding to the resonance column.
2. The tunable duplexer of claim 1, wherein a first fixed medium is disposed within the first cavity, and wherein a fly rod is disposed on the first fixed medium; and a second fixed medium is arranged in the second cavity, and a second flying rod is arranged on the second fixed medium.
3. The tunable duplexer of claim 1, wherein a mounting groove for mounting the first flying bar is formed at a lower end of the first fixing medium, a positioning groove is formed at a side edge of the first fixing medium, a mounting screw hole is formed above the first fixing medium, and a mounting bolt is arranged at a corresponding position on the cover plate.
4. The tunable duplexer of claim 1, wherein a positioning protrusion matched with a positioning groove of the first fixing medium is further arranged inside the first cavity.
5. The tunable duplexer of claim 1, wherein a stop collar is disposed at each end of the first flybar.
6. The tunable duplexer of claim 1, wherein the first input port is an input port of 1710-1780MHZ, the second input port is an input port of 2110-2180MHZ, and the coupled port is a 40dB coupled port.
7. The tunable duplexer of claim 1, wherein a groove is formed in the upper side of the cavity, a protrusion matched with the groove is formed in the edge of the lower side of the cover plate, and the cover plate is clamped with the cavity through the groove and the protrusion.
8. The tunable duplexer of claim 1, wherein mounting holes are provided on the partition, and mounting bolts corresponding to the mounting holes on the partition are provided on the cover plate.
9. The tunable duplexer of claim 1, wherein a reinforcing rib is disposed between the partition wall and the resonant post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211275495.XA CN115458893A (en) | 2022-10-18 | 2022-10-18 | Tunable duplexer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211275495.XA CN115458893A (en) | 2022-10-18 | 2022-10-18 | Tunable duplexer |
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| Publication Number | Publication Date |
|---|---|
| CN115458893A true CN115458893A (en) | 2022-12-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211275495.XA Pending CN115458893A (en) | 2022-10-18 | 2022-10-18 | Tunable duplexer |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100283553A1 (en) * | 2009-05-05 | 2010-11-11 | National Chiao Tung University | Tri-frequency duplexer circuit and multi-frequency duplexer circuit |
| US20160301378A1 (en) * | 2013-12-16 | 2016-10-13 | Huawei Technologies Co., Ltd. | Duplexer and Communications System Having Duplexer |
| CN107275739A (en) * | 2017-08-16 | 2017-10-20 | 江苏凡为通信科技有限公司 | A kind of combiner |
| CN107394332A (en) * | 2017-08-10 | 2017-11-24 | 京信通信系统（中国）有限公司 | Common port coupling device and microwave cavity device |
| CN208460938U (en) * | 2018-08-23 | 2019-02-01 | 湖南澳德信息科技有限公司 | A kind of dual-frequency channel merger |
| CN214153146U (en) * | 2021-02-05 | 2021-09-07 | 广州宸伟网络科技有限公司 | Cavity filter |
-
2022
- 2022-10-18 CN CN202211275495.XA patent/CN115458893A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100283553A1 (en) * | 2009-05-05 | 2010-11-11 | National Chiao Tung University | Tri-frequency duplexer circuit and multi-frequency duplexer circuit |
| US20160301378A1 (en) * | 2013-12-16 | 2016-10-13 | Huawei Technologies Co., Ltd. | Duplexer and Communications System Having Duplexer |
| CN107394332A (en) * | 2017-08-10 | 2017-11-24 | 京信通信系统（中国）有限公司 | Common port coupling device and microwave cavity device |
| CN107275739A (en) * | 2017-08-16 | 2017-10-20 | 江苏凡为通信科技有限公司 | A kind of combiner |
| CN208460938U (en) * | 2018-08-23 | 2019-02-01 | 湖南澳德信息科技有限公司 | A kind of dual-frequency channel merger |
| CN214153146U (en) * | 2021-02-05 | 2021-09-07 | 广州宸伟网络科技有限公司 | Cavity filter |
Non-Patent Citations (1)
| Title |
|---|
| 张苏南;叶强;罗昌桅;: "带通带阻型同轴腔体合路器的设计", 机械设计与制造, no. 05, pages 187 - 189 * |
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