Termination coaxial transition device
By adopting the design of tapered transition sections in the coaxial transitioner in the microwave testing field, the hard coaxial line is converted into a soft coaxial line interface, which solves the problem of high loss of coaxial transitioners in the prior art and achieves better impedance matching and transmission performance.
Patent Information
- Application Number
- CN202420973908.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-08
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-05-08
AI Technical Summary
In the field of microwave testing, existing coaxial transitioners have high losses when converting hard coaxial to soft coaxial, which affects the accuracy and efficiency of the test.
A terminal coaxial transitioner is designed, using a tapered transition section to convert the hard coaxial line into a soft coaxial line interface, and the transition is achieved through the flange and the RF coaxial connector.
This design greatly reduces the loss caused by the transition, improves impedance matching, improves transmission performance, and simplifies structural and production costs.
Smart Images
Figure CN222637632U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of testing and connecting communication hard coaxial devices, in particular to a terminated coaxial transition device. Background Art
[0002] The terminated coaxial transition device is a dual-port component with a hard coaxial line interface at one end and a soft coaxial line interface at the other end. In the field of microwave testing, because the interfaces of the devices under test are various, various RF adapters and transition devices are needed when testing microwave devices.
[0003] Coaxial line is the most commonly used transmission line in microwave radio frequency engineering. It is a dual-conductor transmission line composed of a solid cylindrical conductor and a hollow cylindrical metal tube. There are two common types of coaxial lines: one is a hard coaxial line with inner and outer conductors supported by insulating washers; the other is a soft coaxial line with a soft insulating medium between the inner and outer conductors, also called a coaxial cable.
[0004] Among them, hard coaxial transmission lines are also widely used in microwave light source testing. Various microwave devices are used in the test system. Because the interface of the microwave device does not match the interface of the test instrument during testing, a transition from hard coaxial line to soft coaxial line is required. Utility Model Content
[0005] In order to reduce the loss caused by the coaxial transition device, this design provides a terminated coaxial transition device, which converts the hard coaxial line interface into a soft coaxial line interface through a conical transition, greatly reducing the loss caused by the use of the transition device.
[0006] In order to achieve the above functions, the technical solution adopted by the utility model is as follows: a terminated coaxial transition device, including a flange, a rigid coaxial transmission line, a conical transition section and a radio frequency coaxial connector, the flange is installed at one end of the rigid coaxial transmission line, the bottom of the conical transition section is installed at the other end of the rigid coaxial transmission line, and the radio frequency coaxial connector is connected to the top of the conical transition section.
[0007] As a preferred technical solution of the utility model, the hard coaxial transmission line consists of a hard coaxial transmission line outer conductor and a hard coaxial transmission line inner conductor, the hard coaxial transmission line outer conductor is a hollow cylindrical metal tube, and the hard coaxial transmission line inner conductor is a solid cylindrical metal.
[0008] As a preferred technical solution of the utility model, the tapered transition section is composed of a tapered transition section outer conductor and a tapered transition section inner conductor. The tapered transition section outer conductor has an inner cavity with a tapered structure, and the tapered transition section inner conductor is a solid tapered inner conductor.
[0009] As a preferred technical solution of the utility model, the flange, the outer conductor of the hard coaxial transmission line and the outer conductor of the tapered transition section are all made of 6061 aluminum alloy.
[0010] As a preferred technical solution of the utility model, the inner conductor of the hard coaxial transmission line and the inner conductor of the tapered transition section are made of red copper with a silver-plated surface.
[0011] As a preferred technical solution of the present utility model, the interface of the rigid coaxial transmission line is a 6-1 / 8 standard model, and the radio frequency coaxial connector is a standard radio frequency connector N-type head.
[0012] Compared with the prior art, the utility model adopts the above structure to achieve the following beneficial effects:
[0013] 1. It can realize the direct transition of hard coaxial transmission line to coaxial connector, with simple structure and low production cost;
[0014] 2. The structure of the tapered transition section greatly improves the impedance matching and has better transmission performance. At the same time, the rigid coaxial transmission line port and the coaxial connector port are in a straight line. This structure is more conducive to construction and installation as well as waterproof sealing. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 This is a schematic diagram of the overall structure of a terminated coaxial transition device proposed by the utility model;
[0016] Figure 2 The utility model is an exploded schematic diagram of a terminated coaxial transition device.
[0017] Among them, 1. flange, 2. rigid coaxial transmission line, 3. tapered transition section, 4. RF coaxial connector, 5. rigid coaxial transmission line outer conductor, 6. rigid coaxial transmission line inner conductor, 7. tapered transition section outer conductor, 8. tapered transition section inner conductor. DETAILED DESCRIPTION
[0018] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] In the description of the present utility model, it should be noted that the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance. The present utility model is further described in detail below in conjunction with the accompanying drawings.
[0020] like Figure 1-2 As shown, the utility model provides a terminated coaxial transition device, including a flange 1, a rigid coaxial transmission line 2, a conical transition section 3 and a radio frequency coaxial connector 4, the flange 1 is installed at one end of the rigid coaxial transmission line 2, the bottom of the conical transition section 3 is installed at the other end of the rigid coaxial transmission line 2, and the radio frequency coaxial connector 4 is connected to the top of the conical transition section 3.
[0021] like Figure 2 As shown, the rigid coaxial transmission line 2 is composed of a rigid coaxial transmission line outer conductor 5 and a rigid coaxial transmission line inner conductor 6, the rigid coaxial transmission line outer conductor 5 is a hollow cylindrical metal tube, and the rigid coaxial transmission line inner conductor 6 is a solid cylindrical metal; the conical transition section 3 is composed of a conical transition section outer conductor 7 and a conical transition section inner conductor 8, the conical transition section outer conductor 7 is a conical structure with an inner cavity, and the conical transition section inner conductor 8 is a solid conical inner conductor.
[0022] The flange 1, the outer conductor 5 of the rigid coaxial transmission line and the outer conductor 7 of the tapered transition section are all made of 6061 aluminum alloy, the inner conductor 6 of the rigid coaxial transmission line and the inner conductor 8 of the tapered transition section are made of red copper with a silver-plated surface, the interface of the rigid coaxial transmission line 2 is a 6-1 / 8 standard model, and the RF coaxial connector 4 is a standard RF connector N-type head.
[0023] The above description of the utility model and its implementation methods is not restrictive. The drawings show only one implementation method of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it and design structural methods and embodiments similar to the technical solution without creativity without departing from the purpose of the invention of the utility model, they should all fall within the protection scope of the utility model.
Claims
1. A terminated coaxial transition device, characterized in that: The invention comprises a flange (1), a rigid coaxial transmission line (2), a conical transition section (3) and a radio frequency coaxial connector (4), wherein the flange (1) is installed at one end of the rigid coaxial transmission line (2), the bottom of the conical transition section (3) is installed at the other end of the rigid coaxial transmission line (2), and the radio frequency coaxial connector (4) is connected to the top of the conical transition section (3).
2. The terminated coaxial transition device according to claim 1, characterized in that: The hard coaxial transmission line (2) is composed of a hard coaxial transmission line outer conductor (5) and a hard coaxial transmission line inner conductor (6); the hard coaxial transmission line outer conductor (5) is a hollow cylindrical metal tube, and the hard coaxial transmission line inner conductor (6) is a solid cylindrical metal.
3. The terminated coaxial transition device according to claim 2, characterized in that: The conical transition section (3) is composed of a conical transition section outer conductor (7) and a conical transition section inner conductor (8); the conical transition section outer conductor (7) has an inner cavity with a conical structure, and the conical transition section inner conductor (8) is a solid conical inner conductor.
4. The terminated coaxial transition device according to claim 3, characterized in that: The flange (1), the hard coaxial transmission line outer conductor (5) and the tapered transition section outer conductor (7) are all made of 6061 aluminum alloy.
5. The terminated coaxial transition device according to claim 3, characterized in that: The inner conductor (6) of the hard coaxial transmission line and the inner conductor (8) of the conical transition section are made of red copper with a silver-plated surface.
6. The terminated coaxial transition device according to claim 1, characterized in that: The interface of the rigid coaxial transmission line (2) is a 6-1 / 8 standard model, and the radio frequency coaxial connector (4) is a standard radio frequency connector N-type connector.