A dielectric filter duplexer

Abstract

The utility model relates to duplex technology field, concretely is a kind of medium filter duplexer, including duplexer body, two groups of fixed blocks are symmetrically fixed and installed on the duplexer body, limit mechanism is installed on the fixed block, the limit mechanism includes snap ring and connecting shaft, the fixed block is fixedly connected with snap ring, the connecting shaft is rotatably installed on the snap ring, the connecting shaft is fixedly connected with pressure block, the fixed block is clamped and is installed with plug-in block, the plug-in block is bonded with rubber pad, and the pressure block and rubber pad resist touch, the top of plug-in block is fixedly installed with radiating fin;Plug-in block is clamped into fixed block, when rotating pressure block makes it and rubber pad contact, plug-in block can be installed in fixed block, and then it is convenient to dismount radiating fin, improve the heat dissipation effect of duplexer.

Description

Technical Field

[0001] This utility model relates to a duplexer, specifically a dielectric filter duplexer, and belongs to the field of duplexer technology. Background Technology

[0002] The core of a dielectric filter duplexer is to utilize the high-frequency electromagnetic properties of the dielectric material. Through the frequency selectivity of two filters (a transmit filter and a receive filter), the transmitted and received signals are separated, preventing mutual interference and ensuring the normal operation of the duplexer itself. The dielectric resonator within the duplexer is made of a high-dielectric-constant dielectric material, which resonates at a specific frequency, thus filtering the signal. When the signal frequency matches the resonant frequency of the dielectric resonator, the signal passes smoothly; when the signal frequency deviates from the resonant frequency, the signal is attenuated or reflected. The transmit filter only allows signals within the transmit frequency range to pass through, blocking signals within the receive frequency range; the receive filter only allows signals within the receive frequency range to pass through, blocking signals within the transmit frequency range. Through the coordinated action of these two filters, independent transmission of transmit and receive signals is achieved on the same antenna, ensuring the normal operation of the duplexer itself.

[0003] However, when the duplexer is working, components such as dielectric resonators and metal conductors will generate heat. If heat dissipation is not timely, the device temperature will rise, affecting the filtering performance. Traditional heat sinks are mostly fixed by welding or glue, which is inconvenient to disassemble and install when cleaning the heat sinks. Moreover, long-term vibration can easily cause the fins to fall off, which is not conducive to improving the efficiency of the duplexer. Utility Model Content

[0004] The purpose of this invention is to provide a dielectric filter duplexer to solve the above problems. When the plug is inserted into the fixing block and the pressure block is rotated to contact the rubber pad, the plug can be installed in the fixing block, which facilitates the disassembly and assembly of the heat dissipation fins and improves the heat dissipation effect of the duplexer.

[0005] This utility model achieves the above-mentioned objective through the following technical solution: a dielectric filter duplexer includes a duplexer body, on which two sets of fixing blocks are symmetrically fixedly mounted. A limiting mechanism is installed on each fixing block, and the limiting mechanism includes a retaining ring and a connecting shaft. A retaining ring is fixedly connected to each fixing block, and a connecting shaft is rotatably mounted on the retaining ring. A pressure block is fixedly connected to the connecting shaft. An insert block is engaged and installed inside the fixing block. A rubber pad is adhered to the insert block, and the pressure block abuts against the rubber pad. A heat dissipation fin is fixedly mounted on the top of the insert block.

[0006] Preferably, the connecting shaft is located at the end of the retaining ring away from the insert block, and the pressing block is located at the top of the connecting shaft.

[0007] Preferably, the part of the fixing block that contacts the insert block has a rectangular structure, and the part of the pressing block that is close to the insert block has an arc surface structure.

[0008] Preferably, the top of the rubber pad is at the same level as the top of the fixing block, and the pressure block is located inside the insertion block.

[0009] Preferably, a limiting rod is threaded onto the insert block, and the heat dissipation fins are fixedly connected to the insert block via the limiting rod.

[0010] Preferably, two mounting brackets are symmetrically fixedly connected to the duplexer body, and the mounting brackets are located on the duplexer body near the heat sink fins.

[0011] Preferably, a plurality of sets of thermal grease are adhered to the bottom end of the duplexer body, and the heat dissipation fins are in contact with the thermal grease.

[0012] Preferably, the fixing block has a slot, and an insert block is engaged in the slot, with the height of the insert block being greater than the height of the slot.

[0013] The beneficial effects of this utility model are as follows: the heat dissipation fins are fixed on the plug, and then the plug is vertically inserted into the fixing block. The height of the rubber pad protruding is flush with the top surface of the fixing block. The pressure block is rotated, causing the connecting shaft to rotate along the inner wall of the retaining ring. The pressure block rotates from the part near the connecting shaft to the inside of the plug and contacts the rubber pad, thereby locking the plug inside the fixing block. This limits the position of the plug and allows for quick disassembly when the heat dissipation fins need to be cleaned. During operation, heat is transferred to the plug. After the heat dissipation fins absorb the heat, their surface will radiate heat to the surrounding environment. The air around the heat dissipation fins absorbs the heat, its temperature rises, and its density decreases, which can form natural convection. Hot air rises and cold air falls, continuously circulating and carrying away the heat, thereby dissipating heat from the duplexer body. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection structure between the duplexer body and the mounting bracket of this utility model;

[0016] Figure 3 for Figure 2 The diagram shown is an enlarged view of the structure of part A.

[0017] Figure 4 This is a schematic diagram of the connection structure between the duplexer body and the fixing block of this utility model.

[0018] Figure 5 for Figure 4 The diagram shown is an enlarged view of the structure of section B.

[0019] Figure 6 This is a schematic diagram of the connection structure between the insert and the rubber pad of this utility model;

[0020] Figure 7 This is a schematic diagram of the connection structure between the heat dissipation fins and the limiting rod of this utility model;

[0021] Figure 8 for Figure 7 The diagram shows an enlarged view of section C.

[0022] In the diagram: 1. Duplexer body; 2. Mounting bracket; 3. Heat sink fins; 4. Thermal grease; 5. Fixing block; 6. Limiting mechanism; 601. Snap ring; 602. Coupling shaft; 603. Pressure block; 604. Insertion block; 605. Rubber pad; 7. Limiting rod; 8. Slot. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Please see Figures 1-8As shown, a dielectric filter duplexer includes a duplexer body 1. Two sets of fixing blocks 5 are symmetrically fixedly mounted on the duplexer body 1. A limiting mechanism 6 is installed on each fixing block 5. The limiting mechanism 6 includes a retaining ring 601 and a connecting shaft 602. The retaining ring 601 is fixedly connected to the fixing block 5, and the connecting shaft 602 is rotatably mounted on the retaining ring 601. A pressure block 603 is fixedly connected to the connecting shaft 602. An insert block 604 is engaged inside the fixing block 5. The portion of the pressure block 603 near the insert block 604 has an arc-shaped structure. A rubber pad 605 is adhered to the insert block 604. The top of the rubber pad 605 is at the same horizontal plane as the top of the fixing block 5, and the pressure block 603 abuts against the rubber pad 605. Rotating the pressure block 603 causes the connecting shaft 602 to rotate along the inner wall of the retaining ring 601. The pressure block 603 rotates from the portion near the connecting shaft 602 to the portion near the insert block 604. The insert 604 is locked inside the fixing block 5 by contacting the rubber pad 605, thus limiting the position of the insert 604. It can also be quickly removed when cleaning the heat dissipation fins 3. The heat dissipation fins 3 are fixedly installed on the top of the insert 604. The connecting shaft 602 is located at the end of the retaining ring 601 opposite to the insert 604. The pressure block 603 is located on the top of the connecting shaft 602. A limiting rod 7 is threaded onto the insert 604, and the heat dissipation fins 3 are fixedly connected to the insert 604 via the limiting rod 7. After absorbing heat, the heat dissipation fins 3 radiate heat to the surrounding environment. The air around the heat dissipation fins 3 absorbs the heat, its temperature rises, and its density decreases, forming natural convection. Hot air rises, and cold air falls, continuously circulating and carrying away the heat, thus dissipating heat from the duplexer body 1.

[0025] As a technical optimization of this utility model, two mounting brackets 2 are symmetrically fixedly connected to the duplexer body 1, and the mounting brackets 2 are located near the heat sink fins 3 of the duplexer body 1. The duplexer body 1 can be fixed in the cabinet with screws through the waist-shaped holes of the mounting brackets 2, thus completing the installation of the duplexer body 1.

[0026] As a technical optimization of this utility model, several sets of thermal grease 4 are bonded to the bottom end of the duplexer body 1. The heat dissipation fins 3 are in contact with the thermal grease 4. The thermal grease 4 is evenly squeezed on the bottom of the duplexer body 1 to ensure that the thermal grease 4 can be tightly attached to the bottom end of the duplexer body 1. The thermal grease 4 fills the gap between the duplexer body 1 and the heat dissipation fins 3, which facilitates the elimination of air thermal resistance.

[0027] As a technical optimization of this utility model, the fixing block 5 is provided with a slot 8, and the slot 8 is fitted with a plug 604. The height of the plug 604 is greater than the height of the slot 8. When the plug 604 is vertically inserted into the slot 8 provided in the fixing block 5, the height of the rubber pad 605 protruding from the slot 8 is flush with the top surface of the fixing block 5.

[0028] In use, the operator first wipes the heat dissipation surface at the bottom of the duplexer body 1 with anhydrous ethanol to remove oil, dust, etc., and then evenly squeezes the thermal grease 4 onto the bottom of the duplexer body 1, ensuring that the thermal grease 4 can fit tightly against the bottom of the duplexer body 1. The thermal grease 4 fills the gap between the duplexer body 1 and the heat dissipation fins 3, which helps to eliminate air thermal resistance. Next, the heat dissipation fins 3 are placed on the top of the insertion block 604, and after aligning the threaded holes, the limiting rod 7 is tightened with a tool to fix the heat dissipation fins 3 onto the insertion block 604. The rubber pad 605 is pasted into the inside of the insertion block 604, ensuring that the rubber pad 605 is aligned with the edge of the insertion block 604, and then the insertion block 604 is vertically inserted into the slot provided in the fixing block 5. Inside slot 8, the height of the rubber pad 605 protruding from slot 8 is flush with the top surface of the fixing block 5. Rotating the pressure block 603 causes the connecting shaft 602 to rotate along the inner wall of the retaining ring 601. The pressure block 603 rotates from the part near the connecting shaft 602 into the interior of the insertion block 604 and contacts the rubber pad 605, thus locking the insertion block 604 inside the fixing block 5. This limits the insertion of the insertion block 604 and allows for quick removal when cleaning the heat sink fins 3. The duplexer body 1 is then fixed to the cabinet using screws through the oblong holes of the mounting bracket 2, completing the installation of the duplexer body 1. During use, the transmitted signal from the RF front end enters the duplexer body 1, and the transmitted filter filters the input signal. Only signals within the transmission frequency range are allowed to pass through, while signals of other frequencies (especially those within the reception frequency range) are attenuated or reflected back. The pure transmission signal, filtered by the transmission filter, is output from the antenna port of the duplexer body 1 and radiated into space through the antenna. The antenna receives electromagnetic wave signals from space, which include signals within the transmission frequency range, signals within the reception frequency range, and other interference signals. After the received signal enters the duplexer body 1, the pure reception signal, filtered by the reception filter, is output from the reception port of the duplexer body 1 and sent to the RF back-end for demodulation and other processing to restore the transmitted information. During operation, the bottom of the duplexer body 1 is in close contact with the thermal grease 4, and heat is transferred through... Overheating is conducted from the duplexer body 1 to the thermal grease 4. The thermal grease 4 fills the tiny gap between the duplexer body 1 and the heat sink fins 3, eliminating air thermal resistance and improving heat conduction efficiency. Heat is transferred from the thermal grease 4 to the plug 604. The plug 604 is in close contact with the thermal grease 4 and is usually made of metal, which has good thermal conductivity and can quickly transfer heat. After the heat sink fins 3 absorb heat, their surface will dissipate heat to the surrounding environment through thermal radiation. After the air around the heat sink fins 3 absorbs the heat, its temperature rises and its density decreases, which can form natural convection. Hot air rises and cold air falls, and the continuous circulation can carry away the heat, thereby dissipating heat from the duplexer body 1.

[0029] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0030] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A dielectric filter duplexer, comprising a duplexer body (1), characterized in that: Two sets of fixing blocks (5) are symmetrically fixed on the duplexer body (1). A limiting mechanism (6) is installed on the fixing block (5). The limiting mechanism (6) includes a retaining ring (601) and a connecting shaft (602). The retaining ring (601) is fixedly connected to the fixing block (5). The connecting shaft (602) is rotatably installed on the retaining ring (601). A pressure block (603) is fixedly connected to the connecting shaft (602). An insert block (604) is engaged in the fixing block (5). A rubber pad (605) is adhered to the insert block (604). The pressure block (603) abuts against the rubber pad (605). A heat dissipation fin (3) is fixedly installed on the top of the insert block (604).

2. The dielectric filter duplexer according to claim 1, characterized in that: The connecting shaft (602) is located at one end of the retaining ring (601) away from the insert block (604), and the pressing block (603) is located at the top of the connecting shaft (602).

3. A dielectric filter duplexer according to claim 1, characterized in that: The part of the fixing block (5) that contacts the insert block (604) is rectangular, and the part of the pressing block (603) that is close to the insert block (604) is arc-shaped.

4. A dielectric filter duplexer according to claim 1, characterized in that: The top of the rubber pad (605) is at the same level as the top of the fixing block (5), and the pressure block (603) is located inside the insert block (604).

5. A dielectric filter duplexer according to claim 1, characterized in that: The plug (604) is threaded with a limiting rod (7), and the heat dissipation fins (3) are fixedly connected to the plug (604) through the limiting rod (7).

6. A dielectric filter duplexer according to claim 1, characterized in that: Two mounting brackets (2) are symmetrically fixedly connected to the duplexer body (1), and the mounting brackets (2) are located on the duplexer body (1) near the heat sink fins (3).

7. A dielectric filter duplexer according to claim 1, characterized in that: The bottom end of the duplexer body (1) is bonded with several sets of heat dissipation grease (4), and the heat dissipation fins (3) are in contact with the heat dissipation grease (4).

8. A dielectric filter duplexer according to claim 1, characterized in that: The fixing block (5) is provided with a slot (8), and a plug (604) is engaged in the slot (8), and the height of the plug (604) is greater than the height of the slot (8).

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