1. The N-type connector has a firm structure and is often used in harsh working environments or tests that require repeated plugging and unplugging. It is one of the most widely used connectors. The operating frequency of the standard N-type connector is 11GHz according to the US military standard MIL-C-39012 standard. The outer conductor of the precision N-type connector adopts a non-slotted structure to improve high-frequency performance, and its operating frequency can reach 18GHz.

2. The SMA connector originated in the 1960s and is the most widely used connector in the microwave and radio frequency industries. The inner diameter of the outer conductor is 4.2mm, and it is filled with PTFE medium. Standard SMA connectors operate at 18GHz, while precision SMA connectors can operate at 27GHz.

3. The BNC connector originated in the 1950s and is a bayonet connector, which is convenient and quick to plug and unplug. The current operating frequency of standard BNC connectors is 4GHz.

4. The TNC connector is close to the BNC. The biggest advantage of the TNC connector is that it has good shock resistance. The standard operating frequency of TNC connectors is 11GHz, and the precision TNC connectors are also called TNCA connectors, and the operating frequency can reach 18GHz.

5. The DIN7/16 connector is named after the size of the connector, the outer diameter of the inner conductor is 7mm, the inner diameter of the outer conductor is 16mm, and DIN is the abbreviation of Deutsche Industries Norm. DIN 7/16 connectors are larger in size and operate at a standard frequency of 6GHz.

6. 4.3-10 connector is a reduced version of DIN 7/16 connector, and its internal structure and engagement method are similar to DIN 7/16. The standard operating frequency of the 4.3-10 connector is 6GHz, and the precision 4.3-10 connector can work up to 8GHz.