CN103022612B - A kind of waveguide port radio frequency coaxial cable component - Google Patents

Abstract

A radio frequency coaxial cable assembly with waveguide ports can realize the connection between different waveguide ports or the reliable connection between waveguide ports and radio frequency coaxial interfaces, and is suitable for microwave systems connected with waveguide ports. The cable assembly consists of a terminated waveguide connector and an RF coaxial cable. The end of the cable assembly is designed as a standard waveguide port adapted to the system. When in use, just connect the waveguide port of the cable assembly to the system waveguide port, which is convenient to use. Since the coaxial cable can be bent and can meet the needs of any length, the cable assembly has good space adaptability and can realize the connection between the waveguide ports at any position in space. Compared with the original RF coaxial cable assembly equipped with a waveguide coaxial converter The method reduces the number of parts introduced into the system and two impedance discontinuous interface sections, which is beneficial to improve the performance and reliability of the system, and has high feasibility and practicability.

Description

A waveguide port radio frequency coaxial cable assembly

technical field

The invention relates to a cable assembly, in particular to a radio frequency coaxial cable assembly whose port is a waveguide port.

Background technique

Waveguide coaxial conversion devices are widely used in microwave circuits, and are important passive devices in radar equipment, precision guidance and microwave test systems, especially in the millimeter wave band and where there are relatively high requirements for transmission power, the waveguide coaxial structure is the most efficient conversion device.

In a microwave transmission system, waveguide connections are usually used between different waveguide interfaces. However, the processing precision of waveguides is high and is limited by the number of turns. Therefore, it is difficult to adapt to complex space structures. Coaxial cable assemblies are often used for transition switching. Usually, two A waveguide-to-coaxial conversion connector and an RF coaxial cable assembly are connected. However, this method introduces three components and two discontinuous interface segments, which reduces the reliability of the system and is not conducive to the improvement of product performance.

Contents of the invention

The technical solution of the present invention is to overcome the deficiencies of the prior art and provide a radio frequency coaxial cable assembly with a waveguide port that can reliably realize the connection between waveguide ports at different positions or the connection between the waveguide port and the radio frequency coaxial interface.

The technical solution of the present invention is: a radio frequency coaxial cable assembly with a waveguide port, including a radio frequency coaxial cable and a waveguide port connector directly fitted at least one end of the radio frequency coaxial cable, the The waveguide port connector includes waveguide side plates, connecting screws, coaxial side plates, cable fastening nuts, cable sleeves, sockets and socket fastening nuts. The waveguide side plates and coaxial side plates are fixedly connected by connecting screws. The waveguide There is a groove on one side of the side plate, and the waveguide port is formed after the groove is closely attached to the coaxial side plate. The size of the waveguide port is the same as that of the standard waveguide port adapted to the corresponding frequency band; On the coaxial cable, the cable fastening nut tightly fixes the end face of the cable sleeve and the end face of the coaxial side plate; the waveguide side plate and the coaxial side plate are provided with a through hole, and the jack passes through the through hole The fastening nut of the socket is fixedly connected with the side plate of the waveguide, and one end of the socket is an elastic hole and reliably contacts with the central conductor of the radio frequency coaxial cable.

When the two ends of the radio frequency coaxial cable are directly connected to the waveguide port connector at the same time, the angle between the axes of the two waveguide ports on the projection line perpendicular to the axis plane of the radio frequency coaxial cable is 0°～180° °.

The radio frequency coaxial cable is a flexible cable, or a semi-flexible cable, or a semi-rigid cable, and the length of the radio frequency coaxial cable is not fixed.

Compared with the prior art, the present invention has the advantages that: the present invention provides a reliable way to realize the connection between waveguide ports at different positions or the connection between waveguide ports and radio frequency coaxial interfaces. Since the size of the waveguide port has been standardized, the standard size of the corresponding waveguide port can be queried according to the frequency band used. Therefore, the end of the cable assembly is designed as a waveguide port adapted to the corresponding frequency band. When using it, directly connect the waveguide port of the cable assembly to the system waveguide port. Can. Since the coaxial cable can be bent arbitrarily and can meet the needs of any length, the cable assembly has good space adaptability and can realize the connection between the waveguide ports at any position in space. Compared with the original RF coaxial cable assembly equipped with a waveguide coaxial converter The method reduces the number of components introduced into the system and two impedance discontinuous interface sections, can improve the reliability of the system, and has high feasibility and practicability.

Description of drawings

Fig. 1 is the waveguide port radio frequency coaxial cable assembly structural diagram that two ports of the present invention are waveguide ports;

Fig. 2 is a structural diagram of the waveguide port connector of the present invention;

Fig. 3 is the bottom view of Fig. 2;

Fig. 4 is a structure diagram of a radio frequency coaxial cable assembly with a waveguide port and a radio frequency coaxial interface at one port of the present invention.

detailed description

The present invention will be further described in detail below in conjunction with the accompanying drawings.

Figure 1 shows a radio frequency coaxial cable assembly with both ports being waveguide ports, which is realized by directly connecting waveguide port connectors at both ends of a radio frequency coaxial cable. Among them, the RF coaxial cable can be flexible, semi-flexible (or semi-soft) or semi-rigid, and its length can be cut as required before assembly, and bent before assembly or during use as required.

Figure 2 shows the structure of the waveguide port connector connected at both ends of the cable assembly, which mainly includes waveguide side plate 1, connecting screw 2, coaxial side plate 3, cable fastening nut 4, cable sleeve 5, jack 6. Jack fastening nut 7, fixing glue 8. The waveguide side plate 1 and the coaxial side plate 3 are connected and fixed together by connecting screws 2, and the waveguide side plate 1 is provided with a rectangular groove, which is closely attached to the coaxial side plate to form a rectangular waveguide port 9. The size of the waveguide port 9 ( Dimensions A and B) shown in Figure 3 are the same as the dimensions of the standard waveguide port adapted to the corresponding frequency band; the cable sleeve 5 and the radio frequency coaxial cable are fixed by welding or crimping, and then the cable sleeve is fixed by the cable fastening nut 4 The end face of the tube 5 is closely fixed to the end face of the coaxial side plate 3, so as to realize the fixed connection between the RF coaxial cable and the waveguide port connector; the jack 6 is connected and fixed to the waveguide side plate 1 through the jack fastening nut 7 and the fixing glue 8 ; One end of the jack 6 is designed as an elastic hole to achieve reliable contact with the central conductor of the radio frequency coaxial cable.

The waveguide port connector at one end of the cable assembly and the RF coaxial cable can be tightened and fixed by the cable tightening nut 4 first, and then the waveguide port orientation of the waveguide port connector at the other end can be rotated around the axis of the RF coaxial cable to change the axes of the two waveguide ports The included angle between the projection lines on the plane perpendicular to the axis of the RF coaxial cable (the included angle ranges from 0° to 180°, and the included angle shown in Figure 1 is 0°). After reaching the required angle, pass Tighten the fastening nut 4 to fix the waveguide port connector at the other end and the RF coaxial cable.

Figure 4 shows an RF coaxial cable assembly in which one port is a waveguide port and the other port is an RF coaxial interface. One end of an RF coaxial cable is equipped with a waveguide connector, and the other end is equipped with an RF coaxial connection. device. The waveguide port connector connected to one end of the RF coaxial cable is implemented as shown in FIG. 2 , and the RF coaxial connector connected to the other end of the RF coaxial cable is a commonly used RF connector that can be connected to a cable.

The content that is not described in detail in the description of the present invention belongs to the well-known technology of those skilled in the art.

Claims (1)

1. A radio frequency coaxial cable assembly with a waveguide port, characterized in that: it comprises a radio frequency coaxial cable and a waveguide port connector that is directly connected to at least one end of the radio frequency coaxial cable, and the waveguide port The connector includes waveguide side plate (1), connecting screw (2), coaxial side plate (3), cable clamping nut (4), cable sleeve (5), socket (6) and socket clamping nut (7), the waveguide side plate (1) and the coaxial side plate (3) are fixedly connected by connecting screws (2). There is a groove on one side of the waveguide side plate (1), and the groove and the coaxial side plate (3) A waveguide port (9) is formed after being tightly attached. The size of the waveguide port (9) is the same as that of the standard waveguide port adapted to the corresponding frequency band; the cable sleeve (5) is sleeved on the radio frequency coaxial cable, and the cable is tightly The fastening nut (4) tightly fixes the end face of the cable sleeve (5) and the end face of the coaxial side plate (3); the waveguide side plate (1) and the coaxial side plate (3) are provided with through holes and jacks (6) After passing through the through hole, it is fixedly connected with the waveguide side plate (1) through the socket fastening nut (7). One end of the socket (6) is an elastic hole and is in reliable contact with the central conductor of the radio frequency coaxial cable ; When the two ends of the radio frequency coaxial cable are directly connected to the waveguide port connector at the same time, the angle between the axes of the two docking waveguide ports on the projection lines perpendicular to the axis plane of the radio frequency coaxial cable is 0° ~180°; the radio frequency coaxial cable is a flexible cable, or a semi-flexible cable, or a semi-rigid cable, and the length of the radio frequency coaxial cable is not fixed.