Coaxial Connectors for High Frequency Cable Assemblies

Several high-frequency cable assemblies introduced below mainly refer to those above 12 GHz.

1. SMA connector
Reverse Polarity SMA Receptacle for RG8, 400 Series Cables, Crimp Type. Frequency up to 18GHZ.
SMA coaxial connector is a popular connector at present. It is small in size and can be used at higher frequencies (the frequency range of mating semi-rigid cables is DC ~ 18GHz; when mating flexible cables, it is DC ~ 12.4GHz. ) to work under. Even the millimeter-wave connectors developed later (such as 3.5mm, 2.92mm) also consider the issue of their mechanical compatibility.

                         
2. 3.5mm connector
The 3.5mm connector has an outer conductor with an inner diameter of 3.5mm and a characteristic impedance of 50Ω. An obvious difference from the SMA connector is that the 3.5mm uses an air medium. The outer conductor of the 3.5mm connector is thicker than that of the SMA connector, and its mechanical strength is better than that of the SMA connector. Therefore, not only the electrical performance is better than the SMA connector, but also the mechanical durability and performance repeatability are higher than that of the SMA connector, so it is more suitable for use in the testing industry.

                        
3. 2.92mm (or K) connector
The 2.92mm connector (some manufacturers call this connector K-type connector, and some manufacturers call it SMK, KMC, WMP4 connector, etc.) is an outer conductor with an inner diameter of 2.92mm, a characteristic impedance of 50Ω, and a connection mechanism of 1 /4-36UNS-2 inch thread RF coaxial connector.

                       
4. 2.4mm connector
2.4mm coaxial connector, 2.4mm is the inner diameter of the outer conductor, compatible with 1.85 series connectors. It is a connector for 50 GHz. Since there are not as many manufacturers of 2.4mm connectors as K-type connectors, there are not as many applications as the previous ones.