Three Coaxial Connector Knowledge Points

There is a relatively unpopular classification in the coaxial Connector, the Triaxial Connector, all known as the triaxial connector, literally, that is, three cylinders coaxial. This article will focus on the definition and advantages of three-coaxial connectors, applications and other in-depth introduction.

Definition OF Three Coaxial Connectors

The three-coaxial connector is a coaxial cable with two layers of outer conductors, which is composed of an inner core (the main connector is the center contact), an endothelial signal layer (the corresponding connector is the middle cylindrical contact), and an outer shield layer.

 The inner core mainly transmits signals (such as video signals) or supplies power to the head, and the inner core and the inner core form a loop. The outer layer is the shielding layer and the formation, and the outer diameter specifications of the connecting cable are with a diameter of 8mm, 

with a diameter of 6.1mm and with a diameter of 4.5mm, and the cable with a larger diameter can be transmitted far because of its small transmission loss.

Compared with multi-core cable, three-coaxial cable has simple structure and high reliability. Compared with the two-core coaxial cable, it has higher shielding performance and small signal transmission ability.

 The shielding performance of the three-coaxial connector is 40 to 50dB higher than that of the unshielded connector, and the shielding efficiency of the three-coaxial cable is 9 times higher than that of the single-layer copper braided cable.

Advantages And Applications OF Three Coaxial Cables

The three-coaxial connector is different from the ordinary two-core connector, which can connect the signal, grounding and shielding layer at the same time, and the shielding effect is good. The three-coaxial connector is equipped with a central contact and an intermediate cylindrical contact in the shape.

The connection of the three-coaxial connector generally uses bayonet connection (TRB series) and threaded connection (TRT series), in addition to the ultra-small TRS connector, STRB connector and STRT connector series. The bayonet type connection is commonly three coaxial BNC connector, on the basis of two bayonet (2 ears), the socket uses three pins (3 ears) connection structure, the matching plug uses three spiral groove (three bayonet) connection structure, this structure connection is convenient, reliable, electrical performance is stable, can be quickly inserted and unplugged, its connection is more reliable than the traditional BNC2 ear connector connection. Can withstand severe shock and vibration. The three-coaxial BNC connector is mainly used in sensitive electronic measurement systems, and the ordinary BNC connector can not be directly matched, but can be connected with the ordinary BNC connector through the adapter (or adapter). Triaxial cables are typically used for the internal connection of cameras and related equipment. In use, the quality requirements for three-coaxial cables are mainly flexibility and flexural life. At present, RF triaxial cables and connectors for data buses are mainly used in aviation and many commercial fields, such as telemetry, radar, data networks, airports and other occasions, and are also widely used in digital data trunk, video pairs, baseband circuits and other noiseless advanced protection circuits.