How will the RF coaxial connector affect the components of the transmission system?

How to choose In order to introduce the performance, specifications and parameters of RF coaxial connectors, coaxial connectors and optical fiber connectors more comprehensively, we will continue to release the latest knowledge to help you learn more information.

According to the definition of RF coaxial connector, it is a part of the transmission line. With the help of it, the components (cables) of the transmission system can be connected or disconnected. It is different from the power connector. The power connector is used for low-frequency (usually 60Hz) electrical signals, and the RF connector is used to transmit RF energy. Its frequency range is very wide, up to 18*109Hz/sec (18GHZ) or even higher.RF ConnectorTypical applications include advanced radar, vehicle and ship communications, data transmission systems and aerospace equipment, as well as high-temperature fans. The basic structure of the coaxial connector includes: the center conductor (male and female center contact); then, the outside is the dielectric material, or insulator, as if in the cable; finally, the outer contact. This outer portion serves the same function as the outer shield of the cable, I .e., transmitting signals, as a shield or as a grounding element for the circuit.

1. A radio frequency coaxial connector (hereinafter referred to as an RF connector) is generally considered to be a component attached to a cable or mounted on an instrument as an electrical connection or separation component of a transmission line. It belongs to mechanical and electrical integration products. Simply speaking, it mainly plays the role of bridge. Compared with other electronic components, RF connectors have a relatively short history. The UHF connector, which appeared in 1930, was the earliest RF connector. During the Second World War, due to the urgent need of war, with the development of radar, radio and microwave communication, medium-sized series such as N, C, BNC, TNC and so on were produced. After 1958, miniaturized products such as SMA, SMB and SMC appeared. Coaxial connectors are usually divided into three levels. Please write down the definitions of the three levels respectively: level 0-a specific type of precision manufactured connector used to measure the reflection coefficient of level 1 and level 2 connectors. The error caused by the measurement result can be ignored. Level 1-A connector that specifies the limit value of reflection coefficient according to frequency changes. Generally, the specified dimensional tolerance is not stricter than that of the corresponding level 2 connector, but it is necessary to ensure that the connector meets the requirements of reflection coefficient, it is the manufacturer's responsibility to choose the tighter tolerance.

Class 2.2-A connector manufactured with a wide range of allowable dimensional deviations (tolerances), but still capable of guaranteeing the minimum specified performance and fit. The three products of 7/16, N and SMA produced by our company are respectively of several grades/16 type is of grade 2, N type is of grade 2 and SMA is of grade 1.4.3 in the general specification of radio frequency connectors, which two groups of climate categories are recommend as the priority climate categories 40/085/21 of radio frequency connectors, I .e. low temperature -40 ℃ and high temperature 85 ℃, steady-state damp-heat exposure days 21 days 55/155/56: low temperature -55 ℃, high temperature 155 ℃, steady-state damp-heat exposure days 56 days.

3. RF connectors are usually divided into three test categories in RF connectors. Please write down the definitions of the three test categories respectively: A. (Test Category 1)-Connectors with RF Cable Entry? B. (experimental category 2)-adapter with insertion surfaces at both ends c.(experimental category 3)-connector 4.5 not suitable for reflection coefficient measurement. for the performance of radio frequency connectors, which are mainly divided into three kinds of performance, please list four kinds of performance respectively: a. electrical performance: such as characteristic impedance, reflection coefficient (voltage standing wave ratio), contact resistance and insulation resistance. B. Mechanical properties: such as center contact fixedness, alignment retention, cable fixture resistance.