CN213460033U

CN213460033U - High-field filtering isolation assembly

Info

Publication number: CN213460033U
Application number: CN202022747289.7U
Authority: CN
Inventors: 张永虎
Original assignee: Chengdu Yingshang Electronic Technology Co ltd
Current assignee: Chengdu Yingshang Electronic Technology Co ltd
Priority date: 2020-11-25
Filing date: 2020-11-25
Publication date: 2021-06-15
Anticipated expiration: 2030-11-25

Abstract

The utility model discloses a high field filtering isolation assembly, including the isolator, the wave filter, the isolator includes the last bedplate and the lower bedplate of mutual lock, bedplate one end is equipped with the radio frequency input port down, the other end and wave filter fixed connection, it all is equipped with the installation cavity with lower bedplate top surface to go up the bedplate bottom surface, on, two installation cavities constitute the isolator cavity after the bedplate folds down, be equipped with the isolator in the isolator cavity, the isolator side is equipped with the resistance cavity, be equipped with load resistance in the resistance cavity, be equipped with the outer cover plate on the isolator, be equipped with the resonance post in the wave filter, resonance post tip is equipped with tuning screw, the one end that the isolator was kept away from to the wave filter is equipped with the radio frequency delivery outlet, the isolator respectively with the radio frequency input port, the radio. The utility model discloses an integration structure combines isolator and wave filter to be in the same place, realizes two kinds of functions, and the index performance is more excellent, two devices of relative ratio exclusive use, and its volume is littleer.

Description

High-field filtering isolation assembly

Technical Field

The utility model relates to the field of electronic technology, concretely relates to high-field filtering isolation assembly.

Background

The isolator has the outstanding characteristics that: because of the adoption of ferrite gyromagnetic material, the material generates gyromagnetic characteristics under the combined action of an external microwave field and a constant direct-current magnetic field, and the characteristics enable the polarization rotation (Faraday effect) of electromagnetic waves propagating in the ferrite and the strong absorption (ferromagnetic resonance) of electromagnetic wave energy. The signal can only flow in from the input port and flow out from the output port, and the electromagnetic wave is controlled to transmit the signal along a certain annular direction.

The cavity filter is characterized in that: a microwave filter adopting a coaxial resonant cavity structure; every cavity can be equivalent to inductance-capacitance to form the resonance level, realize the microwave filtering function: the signal that selects its needs passes through, filters out the frequency that does not need, and this sound construction, the stable performance is reliable, and the volume is littleer, and the Q value is high, and high-end spurious passband is far away, its good heat dissipation.

According to the prior art, when the two devices with different functions are used, the user adopts a split type to connect to the system circuit, and the method has the following disadvantages:

1) the two devices occupy a large volume area, and the structural processing is complicated.

2) The two devices are connected in an embedded manner in a circuit, and the problems of signal leakage and signal radiation need to be solved. 3) And the two devices are connected in a circuit in an embedded mode, so that the matching effect is poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a high field filtering isolation subassembly for overcome not enough among the prior art.

In order to solve the technical problem, the utility model discloses a following scheme:

the utility model provides a high field filtering isolation assembly, including isolation assembly, filtering component, isolation assembly includes the last bedplate and the lower bedplate of mutual lock, bedplate one end is equipped with the radio frequency input port down, the other end and filtering component fixed connection, it is equipped with the last installation cavity and the lower installation cavity that link up respectively to go up bedplate bottom surface and lower bedplate top surface, on, two installation cavities constitute the isolator cavity after lower bedplate folds, be equipped with the isolator in the isolator cavity, the isolator side is equipped with the resistance chamber, be equipped with load resistance in the resistance chamber, be equipped with the apron on the isolation assembly, be equipped with the resonance post in the filtering component, resonance post tip is equipped with tuning screw, the one end that filtering component kept away from isolation assembly is equipped with the radio frequency delivery outlet, the isolator respectively with the radio frequency input port, the radio frequency delivery outlet is connected, the radio frequency.

Compared with the prior art, the utility model discloses a with two kinds of device integration design rational in infrastructure, the reliability is high, has compensatied two kinds or a plurality of devices in the past and has adopted split type, and the microstrip embedded connection mode is brought bulky, and the ground connection performance is poor, and signal leakage is great, and the matching effect is not good, the not good scheduling problem of heat dissipation, the debugging time and the loaded down with trivial details scheduling problem of active module structure overall arrangement in the user's use that has significantly reduced.

Preferably, the filtering component comprises an upper cover plate, a component shell and a lower cover plate, the lower base plate is integrally connected with the component shell, an inner cavity for mounting the resonance column is formed in the component shell body, the radio frequency output port is fixed to the right end portion of the component shell through a fixing screw, and the upper cover plate and the lower cover plate are respectively connected to the upper surface and the lower surface of the component shell through screws.

Preferably, be equipped with a plurality of resonance posts in the inner chamber, a plurality of crisscross and parallel arrangement of resonance post, arbitrary one end of resonance post is connected with subassembly casing integration.

Preferably, the isolator sequentially comprises a ferrite permanent magnet sheet, a grounding plate, a ferrite gyromagnetic sheet, an inner conductor, a ferrite gyromagnetic sheet, a grounding plate and a ferrite permanent magnet sheet from top to bottom, and the inner conductor is respectively connected with the radio frequency input port and the resonance column through microstrip lines.

Preferably, the outer cover plate is a U-shaped magnetic yoke, and the U-shaped magnetic yoke is clamped on the isolation assembly and fixed through screws. The outer cover plate adopts a U-shaped magnetic yoke to fixedly shield the magnetic field through screw connection.

Preferably, the grounding plate is a silver-plated iron sheet. Can generate stronger magnetic effect and magnetic shielding effect, and solves the problems of strong magnetic field, narrow relative frequency bandwidth, poor index and the like required by a high-field structure.

Preferably, the assembly shell and the resonance column are made of aluminum alloy and are plated with silver on the surfaces, and the upper cover plate and the lower cover plate are made of aluminum alloy and are plated with silver on the surfaces.

Preferably, the inner cavity of the component shell and the lower mounting cavity on the lower base plate are formed by integrated cavity milling.

Preferably, the upper seat plate and the lower seat plate are fixed by screws.

The utility model discloses beneficial effect who has:

1. the two devices adopt an integrated structure, the structure is reasonable, and the occupied volume is reduced;

2. the two devices adopt an integrated structure, so that the problems of signal leakage and grounding are effectively solved;

3. the two devices adopt an integrated structure, so that the matching effect is optimal.

Drawings

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

fig. 2 is a schematic diagram of the explosion structure of the present invention;

fig. 3 is a plan view of the internal structure of the present invention;

FIG. 4 is a schematic cross-sectional view of FIG. 1;

FIG. 5 is a front view structural diagram of FIG. 1;

fig. 6 is a schematic connection diagram of the present invention.

Reference numerals: 1-isolation component, 2-filter component, 3-radio frequency input port, 4-radio frequency output port, 5-upper cover plate, 6-component shell, 7-lower cover plate, 8-resonance column, 9-tuning screw rod, 10-upper seat plate, 11-lower seat plate, 12-upper installation cavity, 13-lower installation cavity, 14-ferrite permanent magnet sheet, 15-ground plate, 16-ferrite gyromagnetic sheet, 17-inner conductor, 18-resistance cavity, 19-load resistance and 20-U-shaped magnetic yoke. 21-port connecting wire, 22-screw and 23-fastening screw.

Detailed Description

The present invention will be described in further detail with reference to the following examples and drawings, but the present invention is not limited thereto.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "longitudinal", "lateral", "horizontal", "inner", "outer", "front", "rear", "top", "bottom", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and the terms are only for convenience of description of the present invention and simplifying the description, but do not indicate or imply that the device or element to which the term refers must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present invention.

In the description of the present invention, it should be further noted that, unless otherwise explicitly specified or limited, the terms "disposed," "opened," "mounted," "connected," and "connected" are to be construed broadly, e.g., as either a fixed connection, a detachable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

As shown in fig. 1-6, a high field filtering isolation assembly comprises an isolation assembly 1 and a filtering assembly 2, wherein the isolation assembly 1 comprises an upper seat plate 10 and a lower seat plate 11 which are fastened with each other, the upper seat plate 10 is a separate component, the upper seat plate 10 is fixedly connected with the lower seat plate 11 through a screw 22, one end of the lower seat plate 10 is fixed with a radio frequency input port 3 through a fastening screw 23, the other end of the lower seat plate is fixedly connected with the filtering assembly 2, the bottom surface of the upper seat plate 10 and the top surface of the lower seat plate 11 are respectively provided with a through upper installation cavity 12 and a through lower installation cavity 13, the two installation cavities form an isolator cavity after the upper and lower seat plates are folded, an isolator is arranged in the isolator cavity, the isolator sequentially comprises a ferrite permanent magnet 14, a ground plate 15, a ferrite gyromagnetic sheet 16, an inner conductor 17, a ferrite gyromagnetic sheet 16, a ground plate 15 and a ferrite, the resistor cavity 18 is internally provided with a load resistor 19, the load resistor 19 is connected with the inner conductor 17 through a microstrip line, the isolation assembly 1 is provided with an outer cover plate, the filter 2 is internally provided with a resonance column 8, the end part of the resonance column 8 is provided with a tuning screw 9, one end of the filter assembly 2, which is far away from the isolation assembly 1, is provided with a radio frequency output port 4, the inner conductor 17 in the isolator is respectively connected with the radio frequency input port 3 and the resonance column 8 through the microstrip line (in a welding mode, such as a port connecting line 21 in fig. 2), and the radio frequency output port 4 is connected with the resonance column 8 through the microstrip line (in a welding mode, such as the.

The isolator is limited by frequency (below 3 GHZ), various materials and structures, and is difficult to realize integrated structure processing with the filter (because the characteristic of the ferrite isolator lies in that the frequency is in a high field area (below 3 GHZ), polarization rotation (Faraday effect) can be generated under the action of a particularly strong magnetic field, and electromagnetic wave energy is strongly absorbed (ferromagnetic resonance), non-magnetic conductive metal materials can not meet the requirements, and the filter is a non-magnetic conductive metal material), the utility model adopts the integrated design of two devices with reasonable structure and high reliability, overcomes the problems of large volume, poor grounding performance, larger signal leakage, poor matching effect, poor heat dissipation and the like caused by the adoption of a split type and a micro-strip embedded connection mode in the past, greatly reduces the problems of debugging time in the use process of a user, complicated layout of an active module structure and the like, the positions of the functional ports are obviously different, and the installation and the disassembly are convenient.

Specifically, the filtering component 2 comprises an upper cover plate 5, a component shell 6 and a lower cover plate 7, a lower seat plate 11 is integrally connected with the component shell 6, an inner cavity used for installing a resonance column 8 is formed in the component shell 6, a radio frequency output port 4 is fixed at the right end of the component shell 6 through a fixing screw 23, the upper cover plate 5 and the lower cover plate 6 are respectively connected to the upper surface and the lower surface of the component shell 6 through screws 22, and the screws 22 are installed on the circumferential edges of the upper cover plate 5 and the lower cover plate 6.

Specifically, be equipped with a plurality of resonance posts 8 in the inner chamber, a plurality of resonance posts 8 are crisscross and the crisscross filter resonant cavity that forms of parallel arrangement, adopt the microwave filter of resonant cavity structure, every resonance post 8 can be equivalent to inductance-capacitance, thereby form the resonance level, realize the microwave filtering function, this product can select usable frequency, filter the frequency that does not need and can improve the standing-wave ratio of active (power amplifier), effectively protect the power amplifier, the great scheduling problem of in-band fluctuation that produces after broadband device and a plurality of device cascade has also been solved simultaneously, the lower extreme of the first resonance post 8 of from left to right and subassembly casing 6 integration constitute, the upper end of the second resonance post 8 and subassembly casing 6 integration constitute, connect all the other resonance posts 8 according to this kind of mode in proper order.

Specifically, the outer cover plate is a U-shaped magnetic yoke 20, and the U-shaped magnetic yoke 20 is fastened to the isolation assembly 1 and fixed to the isolation assembly 1 by screws 22. The outer cover plate adopts a U-shaped magnetic yoke 20 and is fixedly connected with a shielding magnetic field through a screw 22.

Specifically, the grounding plate 15 is a silver-plated iron sheet. Can generate stronger magnetic effect and magnetic shielding effect, and solves the problems of strong magnetic field, narrow relative frequency bandwidth, poor index and the like required by a high-field structure.

Specifically, the assembly shell 6 and the resonance column 8 are made of aluminum alloy or copper and have silver-plated surfaces, the upper cover plate 5 and the lower cover plate 7 are made of aluminum alloy and have silver-plated surfaces, and the aluminum alloy and the copper cannot conduct magnetism.

Specifically, the inner cavity of the component housing 6 and the lower mounting cavity 13 on the lower base plate 11 are formed by integrated cavity milling.

To sum up, the utility model discloses rational in infrastructure, the reliability is high, and the volume is littleer, and the index is better, has compensatied the embedded technology structure of components of a whole that can function independently in the past bulky, and ground connection is not good, and the matching effect is super poor, the poor short slab of electrical property index. The utility model discloses an integration structure will keep apart subassembly 1 and filtering subassembly 2 and combine together, realize two kinds of functions, and the index performance is more excellent, two devices of relative ratio exclusive use, its volume is littleer type.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and the technical essence of the present invention is that within the spirit and principle of the present invention, any simple modification, equivalent replacement, and improvement made to the above embodiments are all within the protection scope of the technical solution of the present invention.

Claims

1. A high-field filtering isolation assembly is characterized by comprising an isolation assembly (1) and a filtering assembly (2), wherein the isolation assembly (1) comprises an upper seat plate (10) and a lower seat plate (11) which are mutually buckled, a radio frequency input port (3) is arranged at one end of the lower seat plate (11), the other end of the lower seat plate is fixedly connected with the filtering assembly (2), a through upper installation cavity (12) and a through lower installation cavity (13) are respectively arranged at the bottom surface of the upper seat plate (10) and the top surface of the lower seat plate (11), the two installation cavities form an isolator cavity after the upper seat plate and the lower seat plate are folded, an isolator is arranged in the isolator cavity, a resistor cavity (18) is arranged on the side surface of the isolator, a load resistor (19) is arranged in the resistor cavity (18), an outer cover plate is arranged on the isolation assembly (1), a resonance column (8) is arranged in the filtering assembly (2), a tuning screw (9) is arranged at the end part of the resonance column (8, the isolator is respectively connected with the radio frequency input port (3) and the resonance column (8), and the radio frequency output port (4) is connected with the resonance column (8).

2. The high-field filtering and isolating assembly according to claim 1, wherein the filtering assembly (2) comprises an upper cover plate (5), an assembly housing (6) and a lower cover plate (7), the lower seat plate (11) is integrally connected with the assembly housing (6), an inner cavity for mounting the resonant column (8) is formed in the body of the assembly housing (6), the radio frequency output port (4) is fixed at the right end of the assembly housing (6) through a fixing screw (23), and the upper cover plate (5) and the lower cover plate (7) are respectively connected to the upper surface and the lower surface of the assembly housing (6) through screws (22).

3. The high-field filtering and isolating assembly according to claim 2, wherein a plurality of resonant columns (8) are arranged in the inner cavity, the plurality of resonant columns (8) are arranged in a staggered and parallel manner, and any one end of each resonant column (8) is integrally connected with the assembly shell (6).

4. The high-field filtering and isolating assembly according to claim 1, wherein the isolator comprises a ferrite permanent magnet sheet (14), a ground plate (15), a ferrite gyromagnetic sheet (16), an inner conductor (17), a ferrite gyromagnetic sheet (16), a ground plate (15) and a ferrite permanent magnet sheet (14) in sequence from top to bottom, and the inner conductor (17) is respectively connected with the radio frequency input port (3) and the resonant column (8) through microstrip lines.

5. The high field filter isolation assembly according to claim 1, wherein the outer cover plate is a U-shaped yoke (20), and the U-shaped yoke (20) is clamped on the isolation assembly (1) and fixed by a screw (22).

6. A high field filter isolation assembly according to claim 4, wherein the grounding plate (15) is a silver plated iron sheet.

7. The high-field filtering and isolating assembly according to claim 2, wherein the assembly housing (6) and the resonant column (8) are made of aluminum alloy and have silver-plated surfaces, and the upper cover plate (5) and the lower cover plate (7) are made of aluminum alloy and have silver-plated surfaces.

8. The high-field filtering and isolating assembly according to claim 2, wherein the inner cavity of the assembly housing (6) is formed by an integrated cavity milling machine.

9. The high-field filtering and isolating assembly according to claim 1, wherein the upper and lower mounting cavities (13) of the lower base plate (11) and the upper mounting cavity (12) of the upper base plate (10) are formed by integrated cavity milling.

10. The high field filter isolator assembly as claimed in claim 1, wherein said upper seat plate (10) and lower seat plate (11) are secured by screws (22).