High-power ferrite phase shifter involving two matching modes
By designing an integrated high-power ferrite phase shifter, the shortcomings of ferrite phase shifters in high frequency and miniaturization are solved, and high-power capacity microwave signal transmission is achieved to meet the needs of phased array radar.
Patent Information
- Application Number
- CN202422785866.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-15
- Publication Date
- 2025-09-05
- Estimated Expiration
- 2034-11-15
AI Technical Summary
At present, ferrite phase shifters have shortcomings in high frequency, miniaturization and broadband, and it is difficult to meet the miniaturization and high power requirements of phased array radars.
A high-power ferrite phase shifter involving two matching methods was designed. By integrating the phase shift section with the waveguide coaxial conversion section, adopting a ferrite double-ring form, and performing pulse current excitation through the excitation wire, the miniaturization of the structure and the transmission of high-power capacity microwave signals were achieved.
The miniaturization of ferrite phase shifters and high-power capacity microwave signal transmission are achieved, meeting the high-frequency and broadband requirements of phased array radars.
Smart Images
Figure CN223309186U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of ferrite phase shifters, in particular to a high-power ferrite phase shifter involving two matching modes. Background Art
[0002] Ferrite phase shifters, widely used as phase adjustment devices in RF and microwave systems, offer a range of significant advantages. First, they have low insertion loss, minimizing the impact on signal transmission. Second, they also have high power handling and a wide bandwidth, making them suitable for high-power and diverse applications. Third, they also have excellent temperature stability, maintaining performance under varying environmental conditions, which is particularly important for military and aerospace applications. Furthermore, the processing and manufacturing costs of ferrite materials are relatively low. Due to these advantages, such as low insertion loss, high power handling, low cost, and mature manufacturing processes, ferrite phase shifters are widely used in a variety of electronic systems.
[0003] Non-reciprocal ferrite phase shifters have always been an important component of phased array radar antenna feed systems. While providing electronic phase scanning functions, they also provide microwave transmission signals with a certain power capacity. By controlling the driving circuit, they can realize signal transmission and reception functions.
[0004] Conventional ferrite phase shifters mostly operate below the Ku band. Compared to PIN tube phase shifters, their main advantages include low insertion loss and high power capacity. However, with the increasing demand for miniaturization in phased array radars and the increasing power capacity of PIN tube phase shifters, the advantages of ferrite phase shifters are gradually weakening. Therefore, the current development of ferrite phase shifters mainly focuses on high frequency, broadband, miniaturization, and high power. To this end, this utility model proposes a high-power ferrite phase shifter involving two matching methods. It can achieve microwave signal input with a certain power capacity within a certain bandwidth, and achieves miniaturization of the ferrite phase shifter through the form of integrated waveguide coaxial conversion. Utility Model Content
[0005] The purpose of the present utility model is to provide a high-power ferrite phase shifter involving two matching modes to solve the problems raised in the above background technology.
[0006] To achieve the above objectives, the present invention provides the following technical solutions:
[0007] A high-power ferrite phase shifter involving two matching methods includes an upper cavity and a lower cavity, wherein a waveguide coaxial matching metal step is provided on one side of the top of the lower cavity, and a compression waveguide matching section is provided on the other side of the top of the lower cavity. The top of the lower cavity is snap-fittedly connected to the upper cavity, and one side of the combination of the upper and lower cavities is snap-fittedly connected to an end plate, an N-type coaxial connector is installed on the front of the end plate, and the N-type coaxial connector is connected to the waveguide coaxial matching metal step through a pin, a ferrite double ring is provided at the top center of the lower cavity, a waveguide coaxial matching medium and a waveguide matching medium are respectively provided at the top of the lower cavity and on both sides of the ferrite double ring, a wiring printed circuit board is bonded to the center of both ends of the lower cavity, an excitation wire passes through the interior of the ferrite double ring, and the other end of the excitation wire is welded to the wiring printed circuit board.
[0008] Preferably, the ferrite double ring is composed of two ferrite single rings and a high dielectric medium bonded together by high-temperature resistant epoxy resin glue. The ferrite single ring adopts garnet system material, and the dielectric constant of the high dielectric medium is 35.
[0009] Preferably, the waveguide coaxial matching metal step, compression waveguide matching section, upper cavity (8), lower cavity, and end plate are aluminum metal waveguides, and the surface is subjected to conductive oxidation treatment.
[0010] Preferably, the dielectric constant of the waveguide coaxial matching medium and the waveguide matching medium is 6.
[0011] Preferably, the excitation wire is an enameled wire with a diameter of 0.23 mm.
[0012] Preferably, the wiring printed circuit board is a single-layer board, the surface of which is treated with solder resist except for the welding points, and has a thickness of 1 mm.
[0013] Compared with the prior art, the beneficial effects of the present invention are:
[0014] The utility model relates to a high-power ferrite phase shifter with two matching modes, in which the phase shift section, the waveguide coaxial conversion section and the waveguide matching section are integrated into an integrated design, and the structure is compact; the phase shift section adopts a ferrite double ring form, and is pulsed with current through an excitation wire located in a low-power field, which can not only realize a miniaturized integrated design of the structure, but also realize the transmission of microwave signals with a certain power capacity while meeting the phase change requirements, and has certain practicality. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0016] Figure 2 It is a schematic diagram of the explosion structure of the utility model.
[0017] In the figure: 1. Ferrite double ring; 2. Waveguide coaxial matching medium; 3. Waveguide coaxial matching metal step; 4. N-type coaxial connector; 5. Waveguide matching medium; 6. Compressed waveguide matching section; 7. Excitation wire; 8. Upper cavity; 9. Lower cavity; 10. End plate; 11. Wiring printed circuit board. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on the present invention.
[0020] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on specific circumstances.
[0021] See also Figure 1-2 , the utility model provides a technical solution:
[0022] A high-power ferrite phase shifter involving two matching methods includes an upper cavity 8 and a lower cavity 9. A waveguide coaxial matching metal step 3 is provided on one side of the top of the lower cavity 9, and a compression waveguide matching section 6 is provided on the other side of the top of the lower cavity 9. The top of the lower cavity 9 is snap-fitted with the upper cavity 8, and one side of the combination of the upper cavity 8 and the lower cavity 9 is snap-fitted with an end plate 10. An N-type coaxial connector 4 is installed on the front of the end plate 10, and the N-type coaxial connector 4 is connected to the waveguide coaxial matching metal step 3 through a pin. A ferrite double ring 1 is provided at the top center of the lower cavity 9, and a waveguide coaxial matching medium 2 and a waveguide matching medium 5 are respectively provided on the top of the lower cavity 9 and on both sides of the ferrite double ring 1. A wiring printed board 11 is bonded to the centers of both ends of the lower cavity 9, and an excitation wire 7 passes through the interior of the ferrite double ring 1, and the other end of the excitation wire 7 is welded to the wiring printed board 11.
[0023] Specifically, during installation, the upper cavity 8 and the lower cavity 9 are installed by screws, and need to be equipped with positioning pins to ensure installation accuracy; the end plate 10 and the upper cavity 8 and the lower cavity 9 assembly are installed together by screws, and need to be equipped with positioning pins to ensure installation accuracy; the N-type coaxial connector 4 is installed on the end plate 10 by screws; the wiring printed circuit board 11 is bonded to both sides of the phase shifter waveguide cavity by epoxy resin glue; the excitation wire 7 passes through the inner hole of the ferrite double ring 1 inside the phase shift section and is installed on the wiring printed circuit board 11 by welding.
[0024] Furthermore, the ferrite double ring 1 is composed of two ferrite single rings and a high dielectric medium bonded together by high-temperature resistant epoxy resin glue. The ferrite single ring adopts garnet system material, and the high dielectric medium has a dielectric constant of 35.
[0025] Furthermore, the waveguide coaxial matching metal step 3, the compression waveguide matching section 6, the upper cavity 8, the lower cavity 9, and the end plate 10 are aluminum metal waveguides, and the surface is subjected to conductive oxidation treatment.
[0026] Furthermore, the dielectric constant of the waveguide coaxial matching medium 2 and the waveguide matching medium 3 is 6.
[0027] Furthermore, the excitation wire 7 is an enameled wire with a diameter of 0.23 mm.
[0028] Furthermore, the wiring printed circuit board 11 is a single-layer board, the surface of which is treated with solder resist except for the welding points, and has a thickness of 1 mm.
[0029] Specifically, the waveguide coaxial matching metal step 3 is integrated with the lower cavity 9; the compressed waveguide matching section 6 is composed of the upper cavity 8 and the lower cavity 9 respectively processed and assembled; the ferrite double ring 1 is composed of two ferrite single rings and a piece of high dielectric constant medium bonded with high temperature resistant epoxy glue, and the processing accuracy is ensured by secondary grinding; the waveguide coaxial matching medium 2 and the waveguide matching medium 5 are respectively installed on both sides of the ferrite double ring 1, and are ensured to be in contact with the two ferrite double rings 1 by gluing.
[0030] Working principle: The utility model integrates the phase shift section, the waveguide coaxial conversion section and the waveguide matching section into an integrated design, and has a compact structure; the phase shift section adopts the form of a ferrite double ring 1, and is pulsed with current through an excitation wire 7 located in a low-power field, which can not only realize the miniaturized integrated design of the structure, but also realize the transmission of microwave signals with a certain power capacity while meeting the phase change.
[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A high-power ferrite phase shifter involving two matching modes, comprising an upper cavity (8) and a lower cavity (9), characterized in that: A waveguide coaxial matching metal step (3) is provided on one side of the top of the lower cavity (9), a compression waveguide matching section (6) is provided on the other side of the top of the lower cavity (9), the top of the lower cavity (9) is snap-fittedly connected to the upper cavity (8), one side of the combination of the upper cavity (8) and the lower cavity (9) is snap-fittedly connected to an end plate (10), an N-type coaxial connector (4) is installed on the front of the end plate (10), and the N-type coaxial connector (4) is connected to the waveguide coaxial matching metal step (3) through a pin. The lower cavity (9) is connected to the lower cavity by a step (3). A ferrite double ring (1) is provided at the top center of the lower cavity (9). A waveguide coaxial matching medium (2) and a waveguide matching medium (5) are provided at the top of the lower cavity (9) and on both sides of the ferrite double ring (1). A wiring printed board (11) is bonded at the center of both ends of the lower cavity (9). The inside of the ferrite double ring (1) passes through the excitation wire (7), and the other end of the excitation wire (7) is welded to the wiring printed board (11).
2. The high-power ferrite phase shifter involving two matching modes according to claim 1, characterized in that: The ferrite double ring (1) is composed of two ferrite single rings and a high dielectric medium bonded together by high-temperature resistant epoxy resin glue. The ferrite single ring adopts garnet system material, and the high dielectric medium has a dielectric constant of 35.
3. The high-power ferrite phase shifter involving two matching modes according to claim 1, characterized in that: The waveguide coaxial matching metal step (3), the compression waveguide matching section (6), the upper cavity (8), the lower cavity (9), and the end plate (10) are aluminum metal waveguides, and the surfaces thereof are subjected to a conductive oxidation treatment.
4. The high-power ferrite phase shifter involving two matching modes according to claim 1, characterized in that: The dielectric constant of the waveguide coaxial matching medium (2) and the waveguide matching medium (3) is 6.
5. The high-power ferrite phase shifter involving two matching modes according to claim 1, characterized in that: The excitation wire (7) is an enameled wire with a diameter of 0.23 mm.
6. The high-power ferrite phase shifter involving two matching modes according to claim 1, characterized in that: The wiring printed circuit board (11) is a single-layer board, the surface of which is subjected to solder resistance treatment except for the welding points, and has a thickness of 1 mm.