CN213845473U - Miniature coaxial circulator - Google Patents

Abstract

The utility model discloses a micro coaxial circulator, which comprises a cavity, a welding needle, a strontium calcium permanent magnet, a group of iron sheets, a group of ferrite, an inner conductor, a permanent magnet, a clip nickel sheet, a nickel sheet and a cover plate; the welding needle is clamped in the clamping grooves at the three ends of the cavity, the strontium calcium permanent magnet is placed in the cylindrical groove of the cavity, and a group of iron sheets are placed above the strontium calcium permanent magnet; a group of ferrites are clamped between the group of iron sheets, an inner conductor is clamped between the group of ferrites, and three round holes at the three ends of the inner conductor are clamped in the welding pins; the permanent magnet, the clip nickel sheet and the nickel sheet are placed above the group of iron sheets, and the cover plate is fixed on the cavity through riveting. The utility model has the characteristics of magnetic circuit closure is good, the loss is little, heat dispersion is good, center conductor simple structure, reliability are high, easily assembly, miniaturization and anti magnetic interference ability reinforce etc.

Description

Miniature coaxial circulator

Technical Field

The utility model relates to a circulator technical field specifically is a miniature coaxial circulator.

Background

In the existing embedded isolator structure, a discrete magnetic conductive material is used as a shell, the magnetic conductive material is glued on a cavity by using an adhesive, two pieces of ferrite (without a ceramic ring medium), a central conductor, a magnetic conductive wafer, a temperature compensation wafer, a permanent magnet and a magnetic conductive material are filled in the cavity, and the magnetic conductive material is fixed on the cavity by screws respectively. The permanent magnet provides a bias magnetic field for the ferrite, the central conductor is provided with three leading-out end points, one port is connected with a matched load, and the other two ports are an input end and an output end respectively. The structure is characterized in that a plurality of blocks of magnetic conductive materials are fixed on a cavity by adhesives and screws to form a magnetic loop with the cavity. The structure has the advantages of large material consumption, low working magnetic field, incomplete closing of a magnetic circuit, large magnetic leakage, low magnetic circuit efficiency and difficulty in miniaturization of the structure. With the development of communication technology, miniaturization of products has become a market trend.

Disclosure of Invention

Exist in the shortcoming to above-mentioned prior art, the utility model provides a miniature coaxial circulator has that the magnetic circuit is closed well, the loss is little, heat dispersion is good, center conductor simple structure, reliability are high, easily assemble, characteristics such as miniaturized and anti magnetic interference ability reinforce.

The utility model discloses a realize through following technical scheme:

a micro coaxial circulator comprises a cavity, a welding needle, a strontium calcium permanent magnet, a group of iron sheets, a group of ferrites, an inner conductor, a permanent magnet, a clip nickel sheet, a nickel sheet and a cover plate; the welding needle is clamped in the clamping grooves at the three ends of the cavity, the strontium calcium permanent magnet is placed in the cylindrical groove of the cavity, and a group of iron sheets are placed above the strontium calcium permanent magnet; a group of ferrites are clamped between the group of iron sheets, an inner conductor is clamped between the group of ferrites, and three round holes at the three ends of the inner conductor are clamped in the welding pins; the permanent magnet, the clip nickel sheet and the nickel sheet are placed above the group of iron sheets, and the cover plate is fixed on the cavity through riveting.

As a further technical scheme, the ferrite is a ceramic gyromagnetic ferrite with an integrated outer end ceramic and inner end ferrite; the inner conductor is a buckle type inner conductor; the permanent magnet is a samarium cobalt permanent magnet.

As a further technical scheme, the inner conductor is processed by adopting a copper foil with the thickness of 0.1mm, and the surface of the inner conductor is plated with silver; the center knot of inner conductor is discoid, and three angles are circular form, and three port centers are beaten the round hole, and the round hole is inlayed with the welding needle.

As a further technical scheme, the cavity is made of alloy steel materials, and the diameter of the cavity is 7 mm.

As a further technical scheme, the clip nickel sheet is processed by adopting an iron-nickel alloy material; the three ends of the clip nickel sheet protrude out of ears to serve as clips, so that the clip is integrated and dual-purpose.

As a further technical solution, the set of iron sheets includes a first iron sheet and a second iron sheet, and the set of ferrites includes a first ferrite and a second ferrite; the first ferrite is baked with silver on one side and the baked silver side is downward and is contacted with the first iron sheet, and the second ferrite is baked with silver on one side and the baked silver side is upward and is contacted with the second iron sheet.

Compared with the prior art, the beneficial effects of the utility model reside in that: the utility model discloses a miniature coaxial circulator includes cavity, apron, iron sheet, nickel piece, checkpost nickel piece, gyromagnetic ferrite, samarium cobalt permanent magnet, inner conductor, welding pin and strontium calcium permanent magnet, wherein, strontium calcium permanent magnet is placed in the recess, and the iron sheet is placed on strontium calcium permanent magnet, accompanies the inner conductor between the upper and lower two-layer ferrite that overlaps, and three lead wires of inner conductor are drawn outside the cavity and are fixed, place iron sheet, samarium cobalt permanent magnet, checkpost nickel piece and nickel piece on the ferrite, and the apron is through riveting on the cavity; the utility model discloses a with axle circulator, simple structure, small, light in weight, job stabilization nature is good under the extreme temperature, and the magnetic screen is better.

Drawings

Fig. 1 is an exploded schematic view of a micro coaxial circulator according to an embodiment of the present invention;

fig. 2 is an overall schematic diagram of a micro coaxial circulator according to an embodiment of the present invention.

In the figure: 1. a cavity; 2. welding pins; 3. a strontium calcium permanent magnet; 4. iron sheets; 5. a ferrite; 6. an inner conductor; 7. samarium cobalt permanent magnets; 8. a clip nickel sheet; 9. a nickel sheet; 10. and (7) a cover plate.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

Examples

As shown in fig. 1-2, the utility model provides a miniature coaxial circulator, including cavity 1, welding needle 2, strontium calcium permanent magnet 3, iron sheet 4, ferrite 5, inner conductor 6, samarium cobalt permanent magnet 7, checkpost nickel piece 8, nickel piece 9 and apron 10. Three 2 buckles of welding pin are located at 1 three-end of cavity, the cylinder inslot of 1 bottom of cavity places strontium calcium permanent magnet 3 in proper order, a set of iron sheet 4 and a set of ferrite 5, accompany the ferrite group between the upper and lower two-layer iron sheet, accompany inner conductor 6 between the upper and lower two-layer gyromagnetic ferrite that overlaps, 6 three-end lead buckles of inner conductor are in welding pin 2 upper ends, place iron sheet 4 on the gyromagnetic ferrite, samarium cobalt permanent magnet 7, checkpost nickel piece 8, nickel piece 9, apron 10 is fixed on the cavity through the riveting.

The cover plate 10 is made of stamping stainless iron and is riveted into the cavity 1 and compresses other materials in the cavity. The cavity 1 is processed by adopting an easily-cut steel material, and the surface is plated with silver, so that the conductivity is enhanced. The iron sheet 4 is placed on the ferrite to conduct magnetic conduction on the product. The permanent magnet 7 is a samarium cobalt permanent magnet, the magnetism is stable and durable, and the formed magnetic field intensity is not easy to attenuate. The clip nickel sheet 8 and the clip nickel sheet 9 are placed on the permanent magnet to improve and compensate the working temperature of the product.

The iron sheet comprises a first iron sheet and a second iron sheet, and the ferrite is clamped between the first iron sheet and the second iron sheet. The ferrite 5 is a ceramic-type ferrite including a first ceramic-type ferrite and a second ceramic-type ferrite. The first ceramic ferrite single-side silver baking device is placed on a first iron sheet in an inner cavity of the cavity 1, the silver baking surface of the first ceramic ferrite single-side silver baking device is downward and is in contact with the first iron sheet, and the conductivity of the first ceramic ferrite single-side silver baking device is enhanced, the loss is reduced; the silver baking surface of the second ceramic gyromagnetic ferrite is upward and is contacted with a second iron sheet arranged on the second ceramic gyromagnetic ferrite, the inner conductor 6 is arranged between the two ceramic gyromagnetic ferrites, and the three ports of the inner conductor are buckled on the welding needle 2.

The inner conductor is processed by copper foil with the thickness of 0.1mm, the surface of the inner conductor is plated with silver, the conductivity is enhanced, and the loss is reduced. The center of the inner conductor 6 is in a disc shape, and the three ports are also in a circular shape, so that the ignition under the high-power condition caused by the point discharge phenomenon is reduced, and the three ports can be buckled on a welding needle.

The main technical indexes of the micro coaxial circulator provided in the embodiment are as follows:

frequency range	3400MHz～3800MHz
		Loss in forward direction	≤0.35dB(-40～+110℃)
Reverse isolation	≥20dB(-40～+110℃)
		Return loss	≥20dB(-40～+110℃)
Average power	100W
		Intermodulation	-60dBc@2*44dBm
Operating temperature	-40～+110℃
		Overall dimension	Φ7mm×6mm

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; these modifications and substitutions do not depart from the essence of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. A micro coaxial circulator is characterized by comprising a cavity (1), a welding needle (2), a strontium calcium permanent magnet (3), a group of iron sheets (4), a group of ferrites (5), an inner conductor (6), a permanent magnet (7), a clip nickel sheet (8), a nickel sheet (9) and a cover plate (10); the welding needle (2) is clamped into three-end clamping grooves of the cavity (1), the strontium calcium permanent magnet (3) is placed in a cylindrical groove of the cavity (1), and a group of iron sheets (4) are placed above the strontium calcium permanent magnet (3); a group of ferrites (5) are clamped between the group of iron sheets (4), an inner conductor (6) is clamped between the group of ferrites (5), and three round holes at the three ends of the inner conductor (6) are clamped in the welding pins (2); the permanent magnet (7), the clip nickel sheet (8) and the nickel sheet (9) are placed above the group of iron sheets (4), and the cover plate (10) is fixed on the cavity (1) through riveting.

2. The micro coaxial circulator of claim 1, wherein the ferrite (5) is a ceramic gyromagnetic ferrite with an outer end ceramic and an inner end ferrite integrated; the inner conductor (6) is a clamping type inner conductor; the permanent magnet (7) is a samarium cobalt permanent magnet.

3. The micro coaxial circulator of claim 1, wherein the inner conductor (6) is processed by copper foil with a thickness of 0.1mm, and the surface of the inner conductor is plated with silver; the center of the inner conductor (6) is disc-shaped, three corners are round, round holes are punched in the centers of the three ports, and the round holes are embedded with the welding pins (2).

4. The micro coaxial circulator of claim 1, wherein the cavity (1) is machined from a steel alloy material and has a diameter of 7 mm.

5. The micro coaxial circulator of claim 1, wherein the clip nickel plate (8) is machined from an iron-nickel alloy material; the three ends of the clip nickel sheet (8) protrude out of ears to serve as clips, and the clip is integrated and has two functions.

6. The micro coaxial circulator of claim 1, wherein the set of iron pieces (4) includes a first iron piece and a second iron piece, and the set of ferrites (5) includes a first ferrite and a second ferrite; the first ferrite is baked with silver on one side and the baked silver side is downward and is contacted with the first iron sheet, and the second ferrite is baked with silver on one side and the baked silver side is upward and is contacted with the second iron sheet.

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