CN110444838B

CN110444838B - Tunable duplexer

Info

Publication number: CN110444838B
Application number: CN201910750870.3A
Authority: CN
Inventors: 魏永华; 陈婵华; 张同同; 胡志安; 李峰
Original assignee: Tianhua Communication Technology Co ltd
Current assignee: Tianhua Communication Technology Co ltd
Priority date: 2019-08-14
Filing date: 2019-08-14
Publication date: 2021-04-20
Anticipated expiration: 2039-08-14
Also published as: CN110444838A

Abstract

The invention relates to the technical field of duplexers and discloses a tunable duplexer, wherein a movable tuning rod is connected inside a fixed tuning rod in a sliding mode, a moving ring is fixedly installed at the top of the movable tuning rod, a radio frequency connector is fixedly installed at the top of a sealing cover, a radio frequency coupling ring is fixedly installed at the bottom of the radio frequency connector, a conduction tube is fixedly installed on the left side of the radio frequency coupling ring, a capacitor with an adjustable medium is fixedly installed at the top of the conduction tube, a fixing groove is formed in the right side of the movable tuning rod, a guide pillar and a spring are respectively and fixedly installed inside the sealing cover, a guide sleeve is connected outside the guide pillar in a sliding mode, and a fixing clamping head is fixedly installed on the left side of. The tunable duplexer can be tuned without changing other important parameters.

Description

Tunable duplexer

Technical Field

The invention relates to the technical field of duplexers, in particular to a tunable duplexer.

Background

The existing duplexer has the problem that tuning can not be carried out under the condition of not changing other important parameters, so that the duplexer can not be tuned in normal use, certain defects are brought to the use of the duplexer, certain frequency change can not be adapted, the practicability of the duplexer is reduced, and the use requirements of users can not be met.

If the Chinese patent is issued as follows: the single-cavity three-mode band-pass duplexer based on microstrip feed gap coupling has the greatest advantages that nothing is left in the cavity, no corner cut is caused, no probe is used, no tuning screw is used, the mode originality and integrity are guaranteed, the duplexer cannot be tuned, and the duplexer does not have strong adaptability.

In order to solve the above problems, the inventor proposes a tunable duplexer, which has the advantage of tuning the duplexer without changing other important parameters, and can finely tune the duplexer to make the duplexer have a better working effect, thereby facilitating the duplexer to cope with some complex situations and improving the practicability of the device.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a tunable duplexer, which has the advantage of tuning the duplexer without changing other important parameters, and solves the problem that tuning cannot be performed without changing other important parameters.

(II) technical scheme

In order to realize the purpose of tuning the duplexer without changing other important parameters, the invention provides the following technical scheme: a tunable duplexer comprises a duplexer, a signal connecting pipe is fixedly arranged on the right side of the duplexer, a communication line is fixedly arranged at the right end of the signal connecting pipe, an input pipe and an output pipe are respectively and fixedly arranged at the left end of the duplexer, a first fixed spiral ring is movably connected at the left side of the input pipe, a second fixed spiral ring is movably connected at the left end of the output pipe, a receiving cavity and a transmitting cavity are respectively and fixedly arranged in the duplexer, a communication pipe is fixedly arranged on the right side of the receiving cavity, a receiver is fixedly arranged at the right end of the communication pipe, a transmitter is fixedly arranged on the right side of the transmitting cavity through the communication pipe, a three-wire pipe is fixedly arranged on the left side of the receiving cavity through the communication pipe, the bottom of the three-wire pipe is fixedly connected with the transmitting cavity through the communication pipe, an antenna is fixedly arranged on the left side of the three, fixed tuning pole is fixedly installed in the bottom of closing cap, there is portable tuning pole at the inside sliding connection of fixed tuning pole, top fixed mounting at portable tuning pole has the shift ring, top fixed mounting at the closing cap has the radio frequency connector, bottom fixed mounting at the radio frequency connector has the radio frequency coupling ring, left side fixed mounting at the radio frequency coupling ring has the conduction pipe, top fixed mounting at the conduction pipe has the condenser of adjustable medium, fixed recess has been seted up on the right side at portable tuning pole, there are guide pillar and spring at the inside of closing cap fixed mounting respectively, there is the guide pin bushing at the outside sliding connection of guide pillar, left side fixed mounting at the guide pin bushing has fixed dop.

The radio frequency connector further comprises a radio frequency connecting end, the bottom of the radio frequency connecting end is electrically connected with a coupling ring II, a variable capacitor II is fixedly connected to the coupling ring II in a moving mode far away from the radio frequency connecting end, the output end of the variable capacitor II is respectively connected with a coupling ring I, a variable capacitor I and a ground wire, and the coupling ring I is connected with the variable capacitor I in parallel.

Preferably, the transmitting cavity and the receiving cavity are respectively and uniformly distributed in the duplexer, so that the work of the duplexer is facilitated, and the performance of the duplexer is improved.

Preferably, the fixed tuning rod is located in the middle of the transmitting cavity, which is beneficial to tuning the duplexer.

Preferably, all devices in the transmitting cavity are subjected to silver plating treatment, so that electric quantity loss is reduced, and the working and tuning of the device are facilitated.

Preferably, the emission cavity is made of copper, and the working performance of the reflection cavity is improved.

Preferably, the receiving cavity has the same structure as the transmitting cavity, so as to ensure the normal operation of the duplexer.

Preferably, the fixed grooves are uniformly distributed on the right side of the movable tuning rod, and the structures of the fixed clamping heads correspond to the structures of the fixed grooves, so that the position of the movable tuning rod can be adjusted conveniently to perform tuning.

(III) advantageous effects

Compared with the prior art, the invention provides a tunable duplexer, which has the following beneficial effects:

1. this tunable duplexer can drive the removal of portable tuning pole through removing the shift ring, the removal of portable tuning pole can make fixed dop remove, the removal of fixed dop can compression spring, when portable tuning pole removes suitable position, can impress fixed recess with fixed dop under the effect of spring, the position of fixed portable tuning pole, thereby change two cooperations of coupler and variable capacitor, thereby reach and to carry out harmonious effect under the condition that does not change other important parameters.

2. This tunable duplexer, through fixed recess evenly distributed on the right side of portable tuning pole, the use of the fixed dop of deuterogamying can the position of portable tuning pole of accurate regulation to reach accurate harmonious effect, make the duplexer have better working effect, improve the device's practicality.

Drawings

FIG. 1 is a schematic structural view of the present invention;

fig. 2 is a schematic structural diagram of a duplexer;

FIG. 3 is a schematic diagram of an emission chamber;

FIG. 4 is a schematic diagram of a movable tuning rod;

FIG. 5 is a schematic view of the closure;

fig. 6 is an equivalent circuit diagram of the emission cavity.

In the figure: 1-duplexer, 2-signal connecting pipe, 3-communication line, 4-input pipe, 5-output pipe, 6-fixed second helicoid, 7-fixed first helicoid, 8-receiving cavity, 9-transmitting cavity, 10-communication pipe, 11-receiver, 12-transmitter, 13-three-wire pipe, 14-antenna, 15-movable tuning rod, 16-fixed tuning rod, 17-sealing cover, 18-movable ring, 19-radio frequency connector, 20-radio frequency coupling ring, 21-conducting pipe, 22-capacitor of adjustable medium, 23-fixed groove, 24-guide post, 25-spring, 26-guide sleeve and 27-fixed clamping head.

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.

Referring to fig. 1-2, a tunable duplexer includes a duplexer 1, a signal connection pipe 2 fixedly installed on a right side of the duplexer 1 for transmitting signals and fixed to a communication line 3, a communication line 3 fixedly installed on a right end of the signal connection pipe 2, an input pipe 4 and an output pipe 5 fixedly installed on a left end of the duplexer 1, a first fixing coil 7 movably connected to a left side of the input pipe 4 for fixing the communication line 3, a second fixing coil 6 movably connected to a left end of the output pipe 5 for fixing the communication line 3, a receiving cavity 8 and a transmitting cavity 9 fixedly installed inside the duplexer 1, respectively, a main structure for preventing confusion between received signals and transmitted signals, a communication pipe 10 fixedly installed on a right side of the receiving cavity 8 for transmitting signals, a receiver 11 fixedly installed on a right end of the communication pipe 10, the receiving cavity is used for receiving signals, a transmitter 12 is fixedly arranged on the right side of the transmitting cavity 9 through a communication pipe 10 and used for transmitting signals, the receiver 11 and the transmitter 12 are different in working frequency and effectively avoid confusion of the receiver and the transmitter, a three-wire pipe 13 is fixedly arranged on the left side of the receiving cavity 8 through the communication pipe 10 and used for separating or combining the signals, the fact that the received signals and the sent signals are all close to an antenna 14 is achieved, the bottom of the three-wire pipe 13 is fixedly connected with the transmitting cavity 9 through the communication pipe 10, and the antenna 14 is fixedly arranged on the left side of the three-wire pipe 13 through the communication pipe 10 and used for transmitting or receiving the signals.

Referring to fig. 3-5, a cover 17 is fixedly installed inside the transmitting cavity 9, which is beneficial to improving the practicability of the device, the transmitting cavity 9 and the receiving cavity 8 are respectively and uniformly distributed inside the duplexer 1, which is beneficial to the operation of the duplexer 1 and the performance of the duplexer 1, a fixed tuning rod 16 is fixedly installed at the bottom of the cover 17, the fixed tuning rod 16 is located in the middle of the transmitting cavity 9, which is beneficial to tuning the duplexer 1, all devices inside the transmitting cavity 9 are processed by silver plating, which reduces the power loss, is beneficial to the operation and tuning of the device, the transmitting cavity 9 is made of copper, which is beneficial to improving the operating performance of the reflecting cavity 9, the receiving cavity 8 has the same structure as the transmitting cavity 9, in order to ensure the normal operation of the duplexer 1, a movable tuning rod 15 is slidably connected inside the fixed tuning rod 16, the top of the movable tuning rod 15 is fixedly provided with a movable ring 18, the top of the sealing cover 17 is fixedly provided with a radio frequency connector 19, the bottom of the radio frequency connector 19 is fixedly provided with a radio frequency coupling ring 20, the left side of the radio frequency coupling ring 20 is fixedly provided with a conduction tube 21, the top of the conduction tube 21 is fixedly provided with a capacitor 22 with an adjustable medium, the right side of the movable tuning rod 15 is provided with a fixed groove 23, the fixed grooves 23 are uniformly distributed on the right side of the movable tuning rod 15, the structure of the fixed chuck 27 corresponds to that of the fixed groove 23, the position of the movable tuning rod 15 can be adjusted conveniently, tuning is carried out, a guide pillar 24 and a spring 25 are fixedly arranged in the sealing cover 17 respectively, the outer part of the guide pillar 24 is connected with a guide sleeve 26 in a sliding manner, and the left side of the.

Referring to fig. 6, the rf connector 19 further includes a rf connection end a, a second coupling ring L2 is electrically connected to the bottom of the rf connection end a, a second variable capacitor C2 is fixedly connected to the second coupling ring L2 away from the rf connection end a, a first coupling ring L1, a first variable capacitor C1 and a ground GND are respectively connected to the output end of the second variable capacitor C2, the first coupling ring L1 is connected in parallel with the first variable capacitor C1, and the position of the movable tuning rod 15 changes the values of the second coupling ring L2 and the second variable capacitor C2, so as to realize tuning without changing other important parameters.

The working principle is as follows: when the tunable duplexer is used, a user adjusts the height of the moving ring 18, the moving ring 18 moves to drive the movable tuning rod 15 to move, the movable tuning rod 15 moves to press the fixed chuck 27, the fixed chuck 27 moves to drive the guide sleeve 26 to move, the guide sleeve 26 moves to compress the spring 25, when the movable tuning rod 15 moves to a proper position, the guide sleeve 26 is pushed under the action of the spring 25, the fixed chuck 27 is pushed by the guide sleeve 26 to move, the fixed chuck 27 is matched with the fixed groove 23, the position of the movable tuning rod 15 is fixed, and the values of the coupling ring II L2 and the variable capacitor II C2 can be changed by the moving of the movable tuning rod 15 to tune, so that the tuning effect can be achieved without changing other important parameters.

In summary, in the tunable duplexer, the moving ring 18 moves the movable tuning rod 15, the moving of the movable tuning rod 15 moves the fixed chuck 27, the moving of the fixed chuck 27 compresses the spring 25, and when the movable tuning rod 15 moves to a proper position, the fixed chuck 27 is pressed into the fixed groove 23 under the action of the spring 25 to fix the position of the movable tuning rod 15, so as to change the matching between the second coupler L2 and the second variable capacitor C2, thereby achieving the effect of tuning without changing other important parameters.

This tunable duplexer, through fixed recess 23 evenly distributed on portable tuning pole 15's right side, the use of the fixed dop 27 of deuterogamying can the position of portable tuning pole 15 of accurate regulation to reach the effect of accurate tuning, make duplexer 1 have better working effect, improve the device's practicality.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. Tunable duplexer, including duplexer (1), its characterized in that: the right side of the duplexer (1) is fixedly provided with a signal connecting pipe (2), the right end of the signal connecting pipe (2) is fixedly provided with a communication line (3), the left end of the duplexer (1) is respectively fixedly provided with an input pipe (4) and an output pipe (5), the left side of the input pipe (4) is movably connected with a first fixed spiral ring (7), the left end of the output pipe (5) is movably connected with a second fixed spiral ring (6), the interior of the duplexer (1) is respectively fixedly provided with a receiving cavity (8) and a transmitting cavity (9), the right side of the receiving cavity (8) is fixedly provided with a communication pipe (10), the right end of the communication pipe (10) is fixedly provided with a receiver (11), the right side of the transmitting cavity (9) is fixedly provided with a transmitter (12) through the communication pipe (10), the left side of the receiving cavity (8) is fixedly provided with a three-line pipe (13), the bottom of a three-way pipe (13) is fixedly connected with a transmitting cavity (9) through a communication pipe (10), the left side of the three-way pipe (13) is fixedly provided with an antenna (14) through the communication pipe (10), the inside of the transmitting cavity (9) is fixedly provided with a sealing cover (17), the bottom of the sealing cover (17) is fixedly provided with a fixed tuning rod (16), the inside of the fixed tuning rod (16) is slidably connected with a movable tuning rod (15), the top of the movable tuning rod (15) is fixedly provided with a movable ring (18), the top of the sealing cover (17) is fixedly provided with a radio frequency connector (19), the bottom of the radio frequency connector (19) is fixedly provided with a radio frequency coupling ring (20), the left side of the radio frequency coupling ring (20) is fixedly provided with a conduction pipe (21), and the top of the conduction pipe (21) is fixedly provided with a capacitor (22) with an adjustable, a fixed groove (23) is formed in the right side of the movable tuning rod (15), a guide post (24) and a spring (25) are fixedly mounted in the sealing cover (17) respectively, a guide sleeve (26) is connected to the outer portion of the guide post (24) in a sliding mode, and a fixed chuck (27) is fixedly mounted on the left side of the guide sleeve (26);

the radio frequency connector (19) further comprises a radio frequency connecting end (A), the bottom of the radio frequency connecting end (A) is electrically connected with a second coupling ring (L2), the second coupling ring (L2) is far away from the second radio frequency connecting end (A) and is fixedly connected with a second variable capacitor (C2), the output end of the second variable capacitor (C2) is respectively connected with a first coupling ring (L1), a first variable capacitor (C1) and a ground wire (GND), the first coupling ring (L1) is connected with the first variable capacitor (C1) in parallel, and the values of the second coupling ring (L2) and the second variable capacitor (C2) are changed due to the movement of the movable tuning rod 15.

2. A tunable duplexer according to claim 1, wherein: the transmitting cavity (9) and the receiving cavity (8) are respectively and uniformly distributed in the duplexer (1).

3. A tunable duplexer according to claim 1, wherein: the fixed tuning rod (16) is positioned in the middle of the emission cavity (9).

4. A tunable duplexer according to claim 1, wherein: all devices in the emission cavity (9) are processed by silver plating.

5. A tunable duplexer according to claim 1, wherein: the emission cavity (9) is made of copper materials.

6. A tunable duplexer according to claim 1, wherein: the receiving cavity (8) has the same structure as the transmitting cavity (9).

7. A tunable duplexer according to claim 1, wherein: the fixed grooves (23) are uniformly distributed on the right side of the movable tuning rod (15), and the structures of the fixed clamping heads (27) correspond to the structures of the fixed grooves (23).