CN202275903U - Small-size isolator - Google Patents
Small-size isolator Download PDFInfo
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- CN202275903U CN202275903U CN2011203296907U CN201120329690U CN202275903U CN 202275903 U CN202275903 U CN 202275903U CN 2011203296907 U CN2011203296907 U CN 2011203296907U CN 201120329690 U CN201120329690 U CN 201120329690U CN 202275903 U CN202275903 U CN 202275903U
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- cavity
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- microwave ferrite
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Abstract
The utility model discloses a small-size isolator used in the technical field of the mobile communication, comprising a cavity, a microwave ferrite, a center conductor or the like, wherein the cavity is provided with three ports, a load is arranged on the outer side of one port of the cavity, a welding needle, a first medium and a second medium are arranged on the outer sides of the other two ports of the cavity; three leading-out port points are arranged on the center conductor and led outside the three ports of the cavity respectively in an included angle of 120 degrees, one leading-out port point of the center conductor is connected with the load, the other two leading-out port points of the center conductor are all connected with the welding needle by the first medium and the second medium. The small-size isolator is a non-reciprocal electronic component used for input, output isolation of a power amplifier and a switch amplifier in a transmitting and receiving system and playing a de-coupling function in a measurement system. The small-size isolator has features of simple structure, compact structure, good magnetic path closure, small magnetic leakage, high reliability, no need of adhesive and bolts and easy assembly.
Description
Technical field
The utility model relates to field of mobile communication, relates in particular to a kind of miniature isolator.
Background technology
Existing embedded spacer structures is done shell with permeability magnetic material, and permeability magnetic material is glued on the cavity with adhesive, the ferrite of in cavity, packing into; Center conductor, magnetic conduction disk, magnetic conduction disk, temperature-compensating sheet; Permanent magnet, permeability magnetic material, permeability magnetic material is fixed on the cavity with screw respectively.Permanent magnet is that ferrite provides bias magnetic field, and center conductor has several to draw end points, is introduced to respectively outside the corresponding port of cavity.This structure is fixed on the cavity with adhesive and screw by the polylith permeability magnetic material, constitutes magnetic loop with cavity.This structure adds need use adhesive and screw man-hour, the assembling trouble, and volume is big, and magnetic circuit is not exclusively closed, and leakage field is bigger, and magnetic circuit efficient is low.
Fig. 3 is the sketch map of three end circulators.The design concept of three desirable end junction circulators is based on scattering matrix theory, and collision matrix is set up the incident wave that finishes and the relation between the reflected wave.Three end junction circulators are made up of central area and three transmission lines that are coupled with it that a ferrite loads, through changing ferritic size, saturation magnetic moment; Dielectric constant; Add the geomery of permanent magnetic field and center conductor, thereby change the eigenvalue of collision matrix, form circulator.For desirable three end circulators, the electromagnetic wave of 1 port input can only be from the output of 2 ports, and the electromagnetic wave of 2 ports input can only be exported from 3 ports; And the electromagnetic wave of 3 ports input can only be exported from 1 port; Circulator can be made coaxial, little band, band line; Various ways such as waveguide are used in the various electromagnetic transmission system.
Fig. 4 is that two isolators and 90 ° of electric bridges are combined into mixer, during two-in-one, also can make four unification mixers, and it is made up of four isolators and three 90 ° of electric bridges, this mixer end 1 and hold 2 isolation must be greater than 50dB.
Fig. 5 is two-in-one antenna transmission systems.The emission source of two different frequencies forms through two circulators and two filter combinations, also can become four unifications, ten six directions one, and this is very useful in the honeycomb mobile communication base station.
Summary of the invention
The utility model technical problem to be solved provides a kind of simple in structure, and volume is little, and the magnetic circuit closure is good, and leakage field is little, and reliability is high, need not adhesive and screw, the miniature isolator that is easy to assemble.
For solving the problems of the technologies described above; The utility model provides a kind of miniature isolator; Comprise: cavity and the center conductor, first microwave ferrite, second microwave ferrite, even magnetic sheet, permanent magnet, temperature-compensating sheet and the magnetic circuit plate that are arranged in the cavity, said center conductor is located in the middle of first microwave ferrite and second microwave ferrite, is with first dielectric ring around said first microwave ferrite; Be with second dielectric ring around said second microwave ferrite; Said magnetic circuit plate, temperature-compensating sheet, permanent magnet and even magnetic sheet overlay on first microwave ferrite successively with one heart, and the magnetic circuit plate is fixed on the opening part of cavity as loam cake, and it is characterized in that: said cavity is provided with three ports; A port outside of said cavity is provided with load; Two other port of said cavity outside is equipped with capillary, first medium and second medium, has three to draw end points on the said center conductor, draws end points and guides to outside three ports of cavity with the direction of 120 ° of spaces for said three; Draw end points for one of said center conductor and link to each other with load, two other of said center conductor drawn end points and all linked to each other with capillary with second medium through first medium.The utility model adopts integral structure, need not adhesive and screw, directly welds mutually with microstrip circuit during use to get final product; Simple in structure, volume is little, dielectric ring is used for fixing ferrite, makes it remain on the cavity center; Permanent magnet is that ferrite provides bias magnetic field; Its temperature compensation function of temperature-compensating sheet, the device overall performance is good, and reliability is high.
Aforesaid miniature isolator; It is characterized in that: said center conductor electroplate; Said first microwave ferrite and second microwave ferrite are pure garnet 1800VT ferrites; Said first dielectric ring and second dielectric ring are the PTFE medium ring, and said permanent magnet is the samarium cobalt permanent magnet body, and said temperature-compensating sheet is a dilval temperature-compensating sheet.The center conductor electroplate can effectively reduce the loss of device.
Aforesaid miniature isolator; It is characterized in that: said cavity is formed by magnetic conductive metal materials processing; Said magnetic conductive metal material can be iron or steel; Said cavity hatch place and said magnetic circuit plate are processed to thread forms, and said magnetic circuit plate is along the cavity that is threaded at cavity hatch place, and said cavity bottom is provided with three circular holes that are used to install.Simple in structure, easy to assembly.
The beneficial effect that the utility model reached is: simple in structure, volume is little, and the magnetic circuit closure is good, and leakage field is little, and reliability is high, need not adhesive and screw, is easy to assembling.
Description of drawings
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the external form figure after the assembling of the utility model;
Fig. 3 is the sketch map of three end circulators;
Fig. 4 is the duplexer sketch map;
Fig. 5 is two-in-one antenna transmission systems sketch map.
Each code name explanation of letter in the accompanying drawing:
ANT: antenna;
BPF1: band pass filter 1;
Tx1: transmitter 1;
Tx2: transmitter 2.
Embodiment
Below in conjunction with accompanying drawing the utility model is further described.
Like Fig. 1, shown in Figure 2, cavity 1 is provided with three ports, and wherein, the outside of a port is provided with load 11, and the outside of two other port is equipped with capillary 6, first medium 51 and second medium 52.Be provided with magnetic circuit plate 10, temperature-compensating sheet 9, permanent magnet 8, even magnetic sheet 7, first microwave ferrite 31, center conductor 2 and second microwave ferrite 32 in the cavity 1 from top to bottom successively with one heart; Be with first dielectric ring 41 around first microwave ferrite 31; First dielectric ring 41 is stabilized in cavity 1 center with first microwave ferrite 31; Be with second dielectric ring, 42, the second dielectric rings 42 around second microwave ferrite 32 second microwave ferrite 32 is stabilized in cavity 1 center, magnetic circuit plate 10 is fixed on the opening part of cavity 1 as loam cake; The opening part of cavity 1 and magnetic circuit plate 10 are processed to thread forms, and magnetic circuit plate 10 is along the cavity that is threaded into of cavity 1 opening part.There are three on the center conductor 2 and draw end points; Drawing end points for three guides to outside three ports of cavity 1 respectively with the direction of 120 ° of spaces; One of them is drawn end points and links to each other with load 11; Two other is drawn end points and all links to each other with capillary 6 through first medium 51, second medium 52, and cavity 1 bottom also is provided with three circular hole (not shown)s that are used to install.
In the utility model, center conductor 2 electroplates can effectively reduce the loss of device; Temperature-compensating sheet 9 is a dilval temperature-compensating sheet, to improve job stability and the diamagnetic interference performance under the product limiting temperature; Permanent magnet 8 is the samarium cobalt permanent magnet body, longitudinal magnetization first microwave ferrite 31 and second microwave ferrite 32, and magnetization is evenly; First microwave ferrite 31 and second microwave ferrite 32 are pure garnet 1800VT ferrites; First dielectric ring 41 and second dielectric ring 42 are the PTFE medium ring; Cavity 1 is formed by magnetic conductive metal materials processing, and the magnetic conductive metal material can make iron or steel.
The key technical indexes of the utility model such as following table:
The utility model miniature isolator is a kind of nonreciprocal electronic component, isolates and in measuring system, works the effect of decoupling in the input that transmits and receives system's rate of doing work amplifier, switching amplifier, output, and it is simple in structure; Volume is little; The magnetic circuit closure is good, and leakage field is little, and reliability is high; Need not adhesive and screw, be easy to assembling.
Above embodiment limits the utility model never in any form, every above embodiment is made with the equivalent transformation mode other improve and use, all belong to the protection range of the utility model.
Claims (3)
1. miniature isolator; Comprise: cavity (1) and be arranged on center conductor (2) in the cavity (1), first microwave ferrite (31), second microwave ferrite (32), even magnetic sheet (7), permanent magnet (8), temperature-compensating sheet (9) and magnetic circuit plate (10); Said center conductor (2) is located in the middle of first microwave ferrite (31) and second microwave ferrite (32); Said first microwave ferrite (31) is with first dielectric ring (41) on every side; Said second microwave ferrite (32) is with second dielectric ring (42) on every side; Said magnetic circuit plate (10), temperature-compensating sheet (9), permanent magnet (8) and even magnetic sheet (7) overlay on first microwave ferrite (31) successively with one heart; Magnetic circuit plate (10) is fixed on the opening part of cavity (1) as loam cake; It is characterized in that: said cavity is provided with three ports, and a port outside of said cavity is provided with load (11), and two other port outside of said cavity is equipped with capillary (6), first medium (51) and second medium (52); There are three to draw end points on the said center conductor (2); Draw end points and guide to the direction of 120 ° of spaces outside three ports of cavity for said three, draw end points for one of said center conductor (2) and link to each other with load (11), two other of said center conductor (2) drawn end points and all linked to each other with capillary (6) with second medium (52) through first medium (51).
2. miniature isolator according to claim 1; It is characterized in that: said center conductor (2) electroplate; Said first microwave ferrite (31) and second microwave ferrite (32) are pure garnet 1800VT ferrites; Said first dielectric ring (41) and second dielectric ring (42) are the PTFE medium ring, and said permanent magnet (8) is the samarium cobalt permanent magnet body, and said temperature-compensating sheet (9) is a dilval temperature-compensating sheet.
3. miniature isolator according to claim 2; It is characterized in that: said cavity (1) is formed by magnetic conductive metal materials processing; Said magnetic conductive metal material can be iron or steel; Said cavity hatch place and said magnetic circuit plate (10) are processed to thread forms, and said magnetic circuit plate (10) is threaded into cavity (1) along the cavity hatch place, and said cavity (1) bottom is provided with three circular holes that are used to install.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203296907U CN202275903U (en) | 2011-09-05 | 2011-09-05 | Small-size isolator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203296907U CN202275903U (en) | 2011-09-05 | 2011-09-05 | Small-size isolator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202275903U true CN202275903U (en) | 2012-06-13 |
Family
ID=46196241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203296907U Expired - Fee Related CN202275903U (en) | 2011-09-05 | 2011-09-05 | Small-size isolator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202275903U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115966867A (en) * | 2022-12-23 | 2023-04-14 | 南京林业大学 | Microwave isolator suitable for medical field |
| CN116742304A (en) * | 2023-04-23 | 2023-09-12 | 中国电子科技集团公司第十六研究所 | Cryogenic isolator and superconducting quantum computer system |
-
2011
- 2011-09-05 CN CN2011203296907U patent/CN202275903U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115966867A (en) * | 2022-12-23 | 2023-04-14 | 南京林业大学 | Microwave isolator suitable for medical field |
| CN115966867B (en) * | 2022-12-23 | 2024-03-12 | 南京林业大学 | Microwave isolator suitable for medical field |
| CN116742304A (en) * | 2023-04-23 | 2023-09-12 | 中国电子科技集团公司第十六研究所 | Cryogenic isolator and superconducting quantum computer system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120613 Termination date: 20190905 |