CN209993711U

CN209993711U - High-performance isolator for communication frequency band

Info

Publication number: CN209993711U
Application number: CN201920982179.3U
Authority: CN
Inventors: 褚伟民; 陈为祥; 王群
Original assignee: Shenzhen City Rui Shi Technology Co Ltd
Current assignee: Shenzhen City Rui Shi Technology Co Ltd
Priority date: 2019-06-27
Filing date: 2019-06-27
Publication date: 2020-01-24
Anticipated expiration: 2029-06-27

Abstract

The utility model provides a high performance isolator for communication frequency channel relates to the electronic components field, including casing, lid, central conductor, permanent magnet, first ferrite, second ferrite and temperature compensation piece, casing and lid form the holding chamber, inwards have set gradually temperature compensation piece, permanent magnet, first ferrite, central conductor, second ferrite from the holding chamber opening part, the radial edge of first ferrite, second ferrite overlaps respectively has first medium ring and second medium ring; there is three extraction end point on the central conductor, and three extraction end point draws to the casing outside with mutual 120 orientations of interval, and central conductor's one draws forth the end point and links to each other with the load, the utility model provides a high performance isolator for communication frequency channel requires lowly to external magnetic field intensity, and the isolation is high, easily integrates, and simple structure design is favorable to the heat dissipation of device, and then reduces the influence of isolator thermal effect to device work effect.

Description

High-performance isolator for communication frequency band

Technical Field

The utility model relates to an electronic components field, concretely relates to a high performance isolator for communication frequency channel.

Background

Microwave ferrite circulators and isolators are common signal switching devices used in communication technology. The microwave circuit has the functions of isolating microwave signals or energy, circulating microwave signals or energy, converting microwave signals or energy, controlling phase, modulating amplitude or tuning frequency and the like, and is widely applied to microwave systems such as radars, communication, radio navigation, electronic countermeasure, remote control, remote measurement and the like and microwave measuring instruments.

The principle of the microwave ferrite circulator is that the anisotropy of a ferrite material is biased by a magnetic field, the ferrite material is used as a medium, a conduction band structure is arranged on the ferrite material, and the circulator has the annular characteristic by applying a constant magnetic field. If the direction of the bias field is changed, the loop direction changes. The microwave ferrite device is made by utilizing the gyromagnetic effect of ferrite. The permanent magnet forms a gyromagnetic effect on the ferrite, so that the microwave signal can be transmitted only in one direction. The circulator and the isolator are mainly used for a wireless communication system to perform functions such as stably operating a power amplifier, impedance matching, removing a reflected wave, and the like, thereby playing a significant role in the stabilization of the wireless communication system. Since the circulator has irreversibility, the function of isolation, i.e., forming an isolator, can be achieved by mounting an end resistor connected to one terminal of the circulator.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a high performance isolator for communication frequency channel requires lowly to add magnetic field strength, and the isolation is high, easily integrates.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a high-performance isolator for a communication frequency band comprises a shell, a cover body, a central conductor, a permanent magnet, a first ferrite, a second ferrite and a temperature compensation sheet, wherein the shell and the cover body form an accommodating cavity, the temperature compensation sheet, the permanent magnet, the first ferrite, the central conductor and the second ferrite are sequentially arranged from the opening of the accommodating cavity inwards, and the radial edges of the first ferrite and the second ferrite are respectively sleeved with a first medium ring and a second medium ring; the central conductor is provided with three leading-out end points, the three leading-out end points are led out of the shell in the direction of 120 degrees of mutual interval, and one leading-out end point of the central conductor is connected with a load.

Preferably, the first dielectric ring is a ceramic dielectric ring, and the second dielectric ring is a high-frequency dielectric ring made of a polytetrafluoroethylene dielectric ring.

Preferably, the permanent magnet is a samarium cobalt permanent magnet.

Preferably, the temperature compensation plate is made of nickel-iron alloy.

Preferably, the opening of the housing and the periphery of the cover plate are processed into threads, and the cover plate is rotatably mounted on the accommodating cavity along the threads at the opening of the housing.

The utility model provides a high performance isolator for communication frequency channel requires lowly to add magnetic field intensity, and the isolation is high, and is easily integrated, and simple structure designs, is favorable to the heat dissipation of device, and then reduces the influence of isolator thermal effect to device work effect.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1, a high performance isolator for a communication frequency band includes a housing 1, a cover 2, a central conductor 3, a permanent magnet 4, a first ferrite 5, a second ferrite 6 and a temperature compensation plate 7, wherein the housing 1 and the cover 2 form an accommodating cavity, the temperature compensation plate 7, the permanent magnet 4, the first ferrite 5, the central conductor 3 and the second ferrite 6 are sequentially arranged from an opening of the accommodating cavity to the inside, and radial edges of the first ferrite 5 and the second ferrite 6 are respectively sleeved with a first dielectric ring 8 and a second dielectric ring 9; the central conductor 3 is provided with three leading-out end points which are led out of the shell 1 in directions which are mutually spaced by 120 degrees, and one leading-out end point of the central conductor 3 is connected with a load.

Preferably, the first dielectric ring 8 is a ceramic dielectric ring, and the second dielectric ring 9 is a high-frequency dielectric ring made of a teflon dielectric ring.

Preferably, the permanent magnet 4 is a samarium cobalt permanent magnet 4.

Preferably, the temperature compensation plate 7 is a nickel-iron alloy.

Preferably, the opening of the housing 1 and the periphery of the cover plate are processed into threads, and the cover plate is rotatably mounted on the accommodating cavity along the threads at the opening of the housing 1.

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 technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.

Claims

1. A high-performance isolator for a communication frequency band is characterized by comprising a shell (1), a cover body (2), a central conductor (3), a permanent magnet (4), a first ferrite (5), a second ferrite (6) and a temperature compensation sheet (7), wherein the shell (1) and the cover body (2) form an accommodating cavity, the temperature compensation sheet (7), the permanent magnet (4), the first ferrite (5), the central conductor (3) and the second ferrite (6) are sequentially arranged from the opening of the accommodating cavity to the inside, and a first medium ring (8) and a second medium ring (9) are respectively sleeved on the radial edges of the first ferrite (5) and the second ferrite (6); the central conductor (3) is provided with three leading-out end points, the three leading-out end points are led out of the shell (1) in directions which are mutually spaced by 120 degrees, and one leading-out end point of the central conductor (3) is connected with a load.

2. The high performance isolator for communication band according to claim 1, wherein said first dielectric ring (8) is a ceramic dielectric ring, and said second dielectric ring (9) is a high frequency dielectric ring made of teflon dielectric ring.

3. A high performance isolator for the communication band according to claim 1, characterized in that said permanent magnets (4) are samarium cobalt permanent magnets (4).

4. The high-performance isolator for communication bands of claim 1, characterized in that said temperature-compensating plate (7) is a nickel-iron alloy.

5. The high performance isolator for communication frequency band according to claim 1, wherein the opening of the housing (1) and the outer periphery of the cover plate are threaded, and the cover plate is rotatably mounted on the receiving cavity along the threads at the opening of the housing (1).