WO2016106698A1 - Cavity filter, connector, duplexer, remote radio device, signal transceiving apparatus, and tower mounted amplifier - Google Patents

Abstract

Disclosed are a cavity filter, a connector, a duplexer, a remote radio device, a signal transceiving apparatus, and a tower mounted amplifier. The cavity filter comprises a cavity. The cavity is partitioned by separation ribs to form a plurality of sub-cavities. Each sub-cavity is provided with a resonant post. The side wall of the sub-cavity is provided with an installation hole parallel to the resonant post. The installation hole is provided with a connector, and the connector is connected to the resonant post by means of a tap. The side wall of the sub-cavity is provided with a communication groove in communication with the installation hole. The connector is L-shaped and has a bending portion extending from the communication groove into the sub-cavity, and the bending portion is welded to the tap piece. In this manner, the present invention can reduce machining procedures, decrease costs, reduce materials, lower welding difficulty, and improve assembling efficiency.

Description

Cavity filter, connector, duplexer, RF remote device, signal transceiver and tower amplifier

[Technical Field]

The present invention relates to the field of communication devices, and in particular, to a cavity filter, a connector, a duplexer, a radio remote device, a signal transceiving device, and a tower amplifier.

 【Background technique】

The cavity filter is widely used in the field of communications as a frequency selection device, especially in the field of radio frequency communication. In the base station, a filter is used to select a communication signal to filter out clutter or interference signals outside the frequency of the communication signal.

As shown in FIG. 1, the conventional cavity filter 10 generally includes a cavity 11, a connector 12, and a tap piece 13, the connector 12 is fixed to the inner wall of the cavity 11, and the connector 12 includes a vertical connecting rod 14. The connecting rod 14 is welded to one end of the tap piece 13. The soldering portion 15 is located below the connector 12 and is not in direct communication with the outside, so that when the soldering is insufficient, the threaded hole is drilled through the back surface of the cavity due to insufficient space, and soldering is performed from the back side, and is sealed by the sealing sheet 16 after soldering. As a result, the cavity process is increased, the material is increased and the welding is difficult, and the assembly efficiency is affected.

 [Summary of the Invention]

The technical problem solved by the invention is to provide a cavity filter, a connector, a duplexer, a radio remote device, a signal transceiver device and a tower top amplifier, which can reduce the machining process, reduce the cost, reduce the material, and reduce the welding. Difficulty and improve assembly efficiency.

In order to solve the above technical problem, the present invention provides a cavity filter, the cavity filter includes a cavity, the cavity is formed by a spacer rib to form a plurality of sub-cavities, a sub-cavity is provided with a resonant column, and a sidewall of the sub-cavity is provided There is a mounting hole parallel to the resonant column, a connector is arranged in the mounting hole, and the connector is connected to the resonant column through the tap; the side wall of the sub-cavity is provided with a communication groove communicating with the mounting hole, and the connector has an "L" shape, and has a slave The communication groove extends into the bent portion in the sub-cavity, and the bent portion is welded to the tap piece.

Wherein, the connector further comprises an outer joint, and an intermediate portion between the outer joint and the bent portion, the outer joint is plugged with the external connector of the connector and the male and female.

Wherein, the outer peripheral surface of the intermediate portion is provided with knurling, and the connector is fixedly connected to the mounting hole by knurling.

One end of the mounting hole is provided with a card slot for accommodating the external joint, and the outer joint is sleeved with a pressure ring, and the outer joint is fixed in the card slot by a pressure ring.

The outer peripheral surface of the outer joint portion is provided with a boss extending outward in the radial direction, and the pressure ring is screwed or interference fit with the inner circumferential surface of the card slot, and the boss abuts against the bottom of the card slot.

The tap piece has a "Γ" shape, one end of which is perpendicularly connected to the resonator, and the other end is perpendicularly connected to the bent portion.

The tap piece is provided with a receiving hole for receiving the bent portion.

In order to solve the above technical problem, the present invention provides a connector including an outer joint, a bent portion, and an intermediate portion between the outer joint portion and the bent portion, the bent portion is welded with the tap piece, and the outer joint portion The external connector that plugs in and the connector are male and female.

In order to solve the above technical problem, the present invention provides a duplexer including a receiving filter and a transmitting filter, the receiving filter being connected between the receiving terminal and the antenna terminal, and the transmitting filter being connected between the transmitting terminal and the antenna terminal The receiving filter and the transmitting filter are the aforementioned cavity filters.

To solve the above technical problem, the present invention provides a radio remote device, including a radio frequency transceiver module, a power amplifier module, and the foregoing duplexer. The radio frequency transceiver module is connected to the power amplifier module, and the power amplifier module is connected to the duplexer. .

In order to solve the above technical problem, the present invention provides a signal transceiving device, comprising the aforementioned duplexer, connected to a receiving antenna, and selecting a receiving signal; and a radio frequency low noise amplifier connected to a signal output end of the duplexer a circulator connected to the signal output of the low noise amplifier; a combiner connected to the circulator; an RF power amplifier having an input connected to the signal output of the combiner and an output connected to the duplexer; the transmit antenna Receive the output signal of the duplexer and transmit the signal.

In order to solve the above technical problems, the present invention provides a tower top amplifier including a low noise amplifier and a band pass filter, and the band pass filter is the aforementioned duplexer.

Through the above solution, the beneficial effects of the present invention are: by forming the connector in an "L" shape, having a bent portion extending from the communication groove into the sub-cavity, and the bent portion is welded to the tap piece, so that the connector can be extended to The welding space in the cavity is sufficient to weld with the tap piece. It is not necessary to drill the threaded hole on the back of the cavity for welding as in the prior art, and the sealing piece is used for sealing after welding, which can reduce the machining process and reduce the cost. Reduce material, reduce welding difficulty and improve assembly efficiency.

 [Description of the Drawings]

1 is a schematic cross-sectional structural view of a prior art cavity filter;

2 is a cross-sectional structural view of a cavity filter according to an embodiment of the present invention;

3 is a schematic structural view of a connector according to an embodiment of the present invention;

4 is a schematic structural view of a duplexer according to an embodiment of the present invention;

FIG. 5 is a schematic structural diagram of a radio remote device according to an embodiment of the present invention; FIG.

6 is a schematic structural diagram of a signal transceiving device according to an embodiment of the present invention;

Fig. 7 is a schematic structural view of a tower amplifier according to an embodiment of the present invention.

 【detailed description】

Please refer to FIG. 2. FIG. 2 is a cross-sectional structural diagram of a cavity filter according to an embodiment of the present invention. As shown in FIG. 2, the cavity filter 20 includes a cavity 21 and a connector 22, and the cavity 21 is formed by a spacer rib 23 to form a plurality of sub-cavities 24, and the sub-cavity 24 is provided with a resonant column 25, and the side of the sub-cavity 24 The wall is provided with a mounting hole 26 parallel to the resonant column 25, and a connector 22 is provided in the mounting hole 26, and the connector 22 is connected to the resonant column 25 through the tap 27. The side wall of the sub-chamber 24 is provided with a communication groove communicating with the mounting hole 26, and the connector 22 has an "L" shape, and has a bent portion 221 extending from the communication groove into the sub-cavity 24, and the bent portion 221 is welded to the tap piece 27. . The connector 22 can be extended to the sub-cavity 24 where the welding space is sufficient to weld with the tap piece 27, which can reduce the machining process, reduce the cost, reduce the material, reduce the welding difficulty, and improve the assembly efficiency.

In a more specific embodiment, the connector further includes an outer joint 222 and an intermediate portion 223 between the outer joint portion 222 and the bent portion 221, and the outer joint portion 222 is inserted into the male and female joints with the connector 22 External connector. The outer peripheral surface of the intermediate portion 223 is provided with knurling, and the connector 22 is fixedly coupled to the mounting hole 26 by knurling. One end of the mounting hole 26 is provided with a latching groove 29 for accommodating the outer connecting portion 222, and the outer connecting portion 222 is sleeved with a pressing ring 28, and the outer connecting portion 222 is fixed in the latching groove 29 by the pressing ring 28. The outer peripheral surface of the outer joint portion 222 is provided with a boss 224 extending outward in the radial direction. The pressure ring 28 is screwed or interference fit with the inner circumferential surface of the card slot 29, and the boss 224 is abutted on the card slot 29. bottom.

The tap piece 27 has a "Γ" shape, one end of which is perpendicularly connected to the resonant column 25, and the other end of which is perpendicularly connected to the bent portion 221. The tap piece 27 is provided with an insertion hole 271 that receives the bent portion 221. The sub-cavity 24 has sufficient welding space. When welding, the welding tool can be directly inserted from the open end of the sub-cavity 24 for welding, and the back hole of the large-cavity filter is not required to be drilled for welding as in the prior art. Sealing with a sealing piece after welding can reduce the machining process, reduce costs, reduce materials, reduce welding difficulty, and improve assembly efficiency.

3 is a schematic structural view of a connector of an embodiment of the present invention. As shown in FIG. 3, the connector 22 has an "L" shape, and includes a bent portion 221, an outer joint portion 222, and an intermediate portion 223 between the outer joint portion 222 and the bent portion 221, and the bent portion 221 and the tap portion The sheet 27 is soldered, and the outer joint portion 222 is inserted into an external connector in which the connector 32 is a male and a female. The outer peripheral surface of the outer joint portion 222 is provided with a boss 224 extending outward in the radial direction for fitting the pressure ring to attach the boss 224 to the card slot when the connector 22 is mounted to the cavity filter. bottom. The outer peripheral surface of the intermediate portion 223 is provided with a knurling 225 for fixedly connecting the connector 22 to the mounting hole by the knurling 225 when it is mounted to the cavity filter. The connector 22 is connected to the resonant column 25 via a tap 27. In the embodiment of the present invention, when the connector 22 is mounted to the cavity filter, the welding position of the bending portion 221 and the tap piece 27 can be adjusted, the machining process can be reduced, the cost can be reduced, the material can be reduced, the welding difficulty can be reduced, and the welding can be improved. Assembly efficiency.

4 is a schematic structural view of a duplexer according to an embodiment of the present invention. As shown in FIG. 4, the duplexer 30 includes a reception filter 31 connected between the reception terminal 33 and the antenna terminal 34, and a transmission filter 32 connected to the transmission terminal 35 and the antenna terminal 33. Between, the receiving filter 31 and the transmitting filter 32 are the cavity filters in FIG.

FIG. 5 is a schematic structural diagram of a radio remote device according to an embodiment of the present invention. As shown in FIG. 5, the radio remote device 40 includes a radio frequency transceiver module 41, a power amplifier module 42, a power module 43, and the aforementioned duplexer 30. The radio transceiver module 41 is connected to the power amplifier module 42, and the power amplifier module 42 and the duplexer are connected. The device 30 is connected. The power module 43 provides power to the various components of the remote radio device 40.

FIG. 6 is a schematic structural diagram of a signal transceiving device according to an embodiment of the present invention. As shown in FIG. 6, the signal transceiving device 50 includes the aforementioned duplexer 30, is connected to the receiving antenna 54, and selects a received signal; the RF low noise amplifier 51 is connected to the signal output end of the duplexer 30; The unit 53 is connected to the signal output end of the low noise amplifier 51; the combiner 56 is connected to the circulator 53; the RF power amplifier 52 has an input terminal connected to the signal output end of the combiner 56, and an output terminal and a duplexer. 30 is connected; the transmitting antenna 55 receives the output signal of the duplexer 30 and transmits the signal.

7 is a schematic structural view of a tower amplifier according to an embodiment of the present invention. As shown in FIG. 7, the tower amplifier 60 includes a low noise amplifier 61 and a band pass filter 62. The signal received by the antenna terminal 63 passes through the band pass filter 62, is amplified by the signal at the low noise amplifier 61, filtered by the green band pass filter 62, and then transmitted to the subsequent signal processing unit 64 for processing. Subsequent signal processing unit 64 processes the signals that need to be transmitted, filters them with bandpass filter 62, and then transmits them through antenna terminal 63. The band pass filter 61 is the aforementioned duplexer 30.

In summary, the utility model has an "L" shape, and has a bent portion extending from the communication groove into the sub-cavity, and the bent portion is welded with the tap piece, so that the connector can be extended to the cavity for welding. Where there is enough space to weld with the tap piece, it is not necessary to drill the threaded hole on the back of the cavity for welding as in the prior art, and the sealing piece is used for sealing after welding, which can reduce the machining process, reduce the cost, and reduce the material. Reduce welding difficulty and improve assembly efficiency.

The above is only the embodiment of the present invention, and is not intended to limit the scope of the invention, and the equivalent structure or equivalent process transformation of the present invention and the contents of the drawings may be directly or indirectly applied to other related technologies. The fields are all included in the scope of patent protection of the present invention.

Claims (12)

1. A cavity filter, comprising: a cavity, wherein the cavity is formed by a spacer rib to form a plurality of sub-cavities, wherein the sub-cavity is provided with a resonant column, and the sidewall of the sub-cavity is parallel to the a mounting hole of the resonant column, wherein the mounting hole is provided with a connector, and the connector is connected to the resonant column through a tap;

   The side wall of the sub-cavity is provided with a communication groove that communicates with the mounting hole, and the connector has an "L" shape, and has a bent portion extending from the communication groove into the sub-cavity, the bending The part is welded to the tap piece.
2. The cavity filter according to claim 1, wherein the connector further comprises an outer portion, and an intermediate portion between the outer portion and the bent portion, the outer portion An external connector that is a male and female connector with the connector is inserted.
3. The cavity filter according to claim 2, wherein an outer peripheral surface of said intermediate portion is provided with knurling, and said connector is fixedly coupled to said mounting hole by knurling.
4. The filter according to claim 2, wherein one end of the mounting hole is provided with a card slot for accommodating the outer connecting portion, and the outer connecting portion is sleeved with a pressing ring, and the outer connecting portion passes through the A pressure ring is fixed in the card slot.
5. The filter according to claim 4, wherein the outer peripheral surface of the outer joint is provided with a boss projecting radially outward, and the pressure ring is screwed to the inner peripheral surface of the card slot Or an interference fit, the abutment is abutted at the bottom of the card slot.
6. The cavity filter according to any one of claims 1 to 5, wherein the tap piece has a "Γ" shape, one end of which is perpendicularly connected to the resonator, and the other end is perpendicular to the bent portion. connection.
7. A cavity filter according to any one of claims 6 to 4, wherein said tap piece is provided with a receiving hole for receiving said bent portion.
8. A connector comprising: an outer joint, a bent portion, and an intermediate portion between the outer joint portion and the bent portion, the bent portion being welded to the tap piece, The external joint is inserted into an external connector that is a male and female connector with the connector.
9. A duplexer comprising: a receiving filter connected between a receiving terminal and an antenna terminal, and a transmitting filter connected between the transmitting terminal and the antenna terminal The receiving filter and the transmitting filter are the cavity filters according to any one of claims 1-7.
10. A radio remote device, comprising: a radio frequency transceiver module, a power amplifier module, and the duplexer according to claim 9, wherein the radio frequency transceiver module is connected to the power amplifier module, and the power amplifier module and The duplexer is connected.
11. A signal transceiving device characterized by:

    The duplexer of claim 9 connected to the receiving antenna and selecting the received signal;

    An RF low noise amplifier connected to a signal output end of the duplexer;

    a circulator connected to a signal output end of the low noise amplifier;

    a combiner connected to the circulator;

    An RF power amplifier, the input end is connected to the signal output end of the combiner, and the output end is connected to the duplexer;

    A transmitting antenna receives an output signal of the duplexer and transmits the signal.
12. A tower top amplifier comprising a low noise amplifier and a band pass filter, the band pass filter being the duplexer of claim 9.