阅读说明：本技术 带状线谐振器结构及由谐振器结构组成的磁调谐陷波器 (Stripline resonator structure and magnetic tuning trap composed of resonator structure ) 是由 燕志刚 王大勇 陈运茂 张平川 何志强 李俊 荣建海 于 2020-06-23 设计创作，主要内容包括：本发明公开了一种带状线谐振器结构及由该谐振器结构组成的磁调谐陷波器,属于电子元器件技术领域；所述带状线谐振器结构由带状线中心导体、带状线外导体,钆镓石榴石晶体和YIG单晶薄膜组成,其中,所述带状线中心导体、YIG单晶薄膜和钆镓石榴石晶体在所述带状线外导体内依次排列；本发明实现了磁调谐陷波器的谐振器平面化,简化了带状线谐振电路结构设计；采用带状线传输模式,扩展了磁调谐陷波器的通带工作频率；在同一平面可排布多个带状线谐振电路,易于多通道陷波器的集成；谐振电路采用多个单晶薄膜块构成谐振器级联,有效抑制单晶薄膜的多个激励模式,增加陷波器阻带深度,提高陷波器性能。(The invention discloses a strip line resonator structure and a magnetic tuning wave trap composed of the same, belonging to the technical field of electronic components; the strip line resonator structure consists of a strip line central conductor, a strip line outer conductor, a gadolinium gallium garnet crystal and a YIG single crystal thin film, wherein the strip line central conductor, the YIG single crystal thin film and the gadolinium gallium garnet crystal are sequentially arranged in the strip line outer conductor; the invention realizes the resonator planarization of the magnetic tuning wave trap and simplifies the structural design of the strip line resonant circuit; the working frequency of the passband of the magnetic tuning wave trap is expanded by adopting a strip line transmission mode; a plurality of strip line resonant circuits can be arranged on the same plane, so that the integration of the multi-channel wave trap is facilitated; the resonance circuit adopts a plurality of single crystal film blocks to form resonator cascade, effectively inhibits a plurality of excitation modes of the single crystal film, increases the stop band depth of the wave trap and improves the performance of the wave trap.)

1. A stripline resonator structure, characterized by: the gadolinium gallium garnet single crystal thin film is composed of a strip line central conductor, a strip line outer conductor, gadolinium gallium garnet crystals and a YIG single crystal thin film, wherein the YIG single crystal thin film and the gadolinium gallium garnet crystals are arranged in the strip line in sequence along the strip line central conductor between the inner conductor and the outer conductor.

2. A stripline resonator structure as recited in claim 1, wherein: the YIG single crystal film is blocky, the saturation magnetization of the YIG single crystal film is 1000-1750 Gs, and the resonance line width is 0.3-O.6OeThe thickness of the film is 10 to 20 μm.

3. A stripline resonator structure according to claim 2, wherein: the saturation magnetization of the YIG single crystal film is 1000-1750 Gs, and the resonance line width is 0.3-O.6OeThe thickness of the film is 10 to 20 μm.

4. A magnetically tuned trap comprised of the stripline resonator structure of any of claims 1 to 3, wherein: the magnetic resonance strip line resonator comprises an upper magnetic circuit and a lower magnetic circuit, wherein an air gap is arranged between the upper magnetic circuit and the lower magnetic circuit, the air gap is provided with the strip line resonator structure, and an excitation coil is arranged in the lower magnetic circuit.

Technical Field

The invention relates to the technical field of electronic components, in particular to a stripline resonator structure and a magnetic tuning wave trap composed of the resonator structure.

Background

The YIG (yttrium iron garnet) band-stop filter is mainly applied to electronic warfare systems as a broadband magnetic tuning device, and is an essential important component no matter electronic reconnaissance, electronic attack and electronic defense. The YIG band elimination filter has a broadband tuning characteristic, filters or inhibits unnecessary interference signals in an Electronic Support (ESM) system and an Electronic Countermeasure (ECM) system, ensures the normal work of the system, and is widely applied to an electronic information system and a microwave receiving front end. The application platform comprises an airborne broadband receiver, an electronic interference unit and a communication system; ground, ship-based radar; missile electronic system.

The prior YIG wave trap adopts a ring-ball coupling resonance structure, which is shown in figure 1, and generally comprises a plurality of YIG pellets 3, a multi-stage resonance coupling ring 2 and a resonance cavity. The structure is complex, the assembly process is various, the production period is long, and the debugging difficulty is large. The resonator of the YIG wave trap with the global coupling resonance structure is large in size and is influenced by the ball inlet direction of the YIG small balls and the debugging process, so that multi-channel and array integration is difficult to realize. And due to the limitation of coupling loop inductance and distributed capacitance, the straight-through frequency of the YIG trap of the existing ring-and-ball coupling resonant structure is generally lower than 20 GHz.

As mentioned above, most of the current magnetic tuning traps adopt YIG single crystal balls as resonators, adopt a ring-ball coupling structure, and realize a trap function in a magnetic field by a ferromagnetic resonance principle. Generally, the YIG magnetic tuning trap comprises an electromagnet structure and a resonator structure, wherein the electromagnet structure consists of a soft magnetic alloy material with high magnetic conductivity and an excitation coil 6, the soft magnetic alloy material is magnetized under the action of a magnetic field generated by a magnetic circuit coil, a continuously adjustable strong magnetic field is generated at an air gap of an upper magnetic circuit 5 and a lower magnetic circuit 5, and the resonator is arranged at the air gap of the upper magnetic circuit and the lower magnetic circuit. The YIG single crystal small ball 3, the coupling ring 2 and the resonant cavity 1 jointly form a resonator of the magnetic tuning wave trap. Under the action of a magnetic field, the YIG single crystal small balls can generate ferromagnetic resonance, when microwave signals are coupled in through the coupling ring 2 and have the same frequency with the ferromagnetic resonance frequency of the YIG single crystal small balls 3, resonance can be generated, and a trapped wave frequency point is formed; the trap frequency can be changed by changing the magnitude of the magnetic field;

the global coupling resonance structure is generally composed of a YIG single crystal small ball 3, a coupling ring 2 and a resonant cavity 1; the YIG single crystal small ball 3 is bonded on the support rod 4, the YIG single crystal small ball 3 is arranged at the center of the coupling ring 2 through the support rod 4, the direction of the YIG single crystal small ball 3 can be adjusted by rotating the support rod 4, the YIG single crystal small ball 3 and the coupling ring 2 are arranged at the center of the resonant cavity 1, and the direction of an external magnetic field needs to be vertical to the coupling ring 2, as shown in figure 2.

The magnetic tuning trap of the existing ring-and-ball coupling resonance structure adopts YIG single crystal ball 3 and coupling ring 2 to jointly form a resonator, the structure is three-dimensional coupling, the assembly is complex, the debugging difficulty is high, and the passband direct frequency is lower than 20 GHz; because the magnetic field direction is vertical to the position of the small ball supporting rod 4, and the small ball supporting rod 4 needs to be rotated to adjust the position of the YIG single crystal small ball 3 during debugging, the YIG wave trap adopting the ring-and-ball coupling resonance structure is difficult to realize multi-channel integration in the same magnetic circuit structure.

Disclosure of Invention

It is an object of the present invention to provide a stripline resonator structure to solve the above problems.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: a stripline resonator structure is composed of a stripline central conductor, a stripline outer conductor, gadolinium gallium garnet crystals and a YIG single crystal thin film, wherein the YIG single crystal thin film and the gadolinium gallium garnet crystals are arranged in the stripline between the inner conductor and the outer conductor in sequence along the stripline central conductor.

As a preferred technical scheme: the YIG single crystal film is blocky, the saturation magnetization of the YIG single crystal film is 1000-1750 Gs, and the resonance line width is 0.3-O.6OeThe thickness of the film is 10 to 20 μm.

As a further preferable technical scheme: the saturation magnetization of the YIG single crystal film is 1750Gs, and the resonance line width is 0.5O e.

The trap resonance circuit adopts a strip line transmission mode, and uses a YIG single crystal film as a resonator; one end of the strip line is a radio frequency input, the other end of the strip line is a radio frequency output, and the length of the strip line is designed according to the performance of the wave trap.

The second purpose of the present invention is to provide a magnetically tuned trap composed of the above stripline resonator structure, which comprises an upper magnetic circuit and a lower magnetic circuit, wherein an air gap is arranged between the upper magnetic circuit and the lower magnetic circuit, the stripline resonator structure is arranged at the air gap, and an excitation coil is arranged in the lower magnetic circuit.

Compared with the prior art, the invention has the advantages that: the strip line and the single crystal film are adopted to jointly form the resonance circuit structure of the novel magnetic tuning wave trap, so that the planarization of the resonator of the magnetic tuning wave trap is realized, and the structural design of the resonance circuit of the magnetic tuning wave trap is simplified; a strip line transmission mode is adopted, the through frequency is as high as 40GH, and the passband working frequency of the magnetic tuning wave trap is expanded; a plurality of strip line resonant circuits can be arranged on the same plane, and the integration design of the multi-channel magnetic tuning wave trap is realized in the same magnetic circuit structure, so that the integration of the multi-channel wave trap is easy; the resonance circuit adopts a plurality of single crystal film blocks to form resonator cascade, effectively inhibits a plurality of excitation modes of the single crystal film, increases the stop band depth of the wave trap and improves the performance of the wave trap.

Drawings

FIG. 1 is a diagram of a prior art structure of a spherical-annular coupled resonant circuit of a YIG trap;

FIG. 2 is a structural diagram of a YIG trap of a conventional ring-and-ball coupled resonant structure;

FIG. 3 is a cross-sectional structural view of a stripline-fed YIG single crystal thin film resonator of the present invention;

FIG. 4 is a view of the structure of the pot-shaped magnetic circuit of the present invention;

FIG. 5 is a schematic view of a YIG single crystal thin film bulk according to the present invention;

FIG. 6 is a structure diagram of a stripline resonant circuit of the single crystal thin film trap of the present invention;

figure 7 is a cross-sectional view of a stripline resonant circuit of the single crystal thin film trap of the present invention;

figure 8 is a block diagram of a magnetically tuned trap in accordance with the present invention.

In the figure: 1. a resonant cavity; 2. a coupling ring; 3. YIG single crystal beads; 4. a support bar; 5. a magnetic circuit; 6. a field coil; 7. a coaxial cable; 8. a stripline center conductor; 9. YIG single crystal film; 10. gadolinium gallium garnet crystals; 11. a stripline outer conductor; 12. a lower magnetic circuit; 13. an upper magnetic circuit; 14. an SMA connector; 15. a stripline resonant circuit; 16. a set screw; 17. and a magnetic circuit air gap.

Detailed Description

The invention will be further explained with reference to the drawings.