There is a wide variety of RF coaxial connectors, each with its specific design and application areas. This article will briefly analyze some common RF coaxial connectors and their corresponding applications.
1. N-type connector
The N-type connector is a highly versatile, wide-frequency range, easy-to-use, and highly reliable connector. It typically comes in two specifications: 50 ohms and 75 ohms, and is suitable for use in fields such as radar, antennas, satellite communications, and microwave measurements. The greatest advantages of the N-type connector lie in its high mechanical strength, good waterproof and dustproof performance, strong anti-aging performance, stable performance, and ease of installation and disassembly.
2. BNC connector
The BNC connector is a bayonet-type connector that allows for quick connection/disconnection, supporting a signal frequency range of 0 to 4GHz. It is suitable for use in wireless communication systems, televisions, test equipment, and other radio frequency electronic devices. Due to its simplicity and ease of use, the BNC connector was also widely used in early computer networks.
3. SMA connector
The SMA connector is a coaxial connector with a small threaded connection, featuring wide bandwidth, excellent performance, high reliability, and long lifespan. It is suitable for use in the radio frequency (RF) circuits of microwave equipment and digital communication systems. It is commonly used as a GPS clock interface on single boards and as a test port for base station RF modules. Some manufacturers have already achieved operating frequencies of up to 26.5 GHz or even higher for SMA connectors.
4. SMB connector
The SMB connector is a small, push-in, locking RF coaxial connector, suitable for use in high-frequency circuits of radio equipment and electronic instruments. It is compact, lightweight, and easy to use, boasting excellent electrical characteristics across a frequency range from DC to 4GHz.
5. SMC connector
The SMC connector utilizes a #10-32 UNF threaded interface and offers excellent electrical performance across the DC to 10GHz range. It provides a suitable interconnection method for printed circuit boards where size is a critical consideration.
6. F-type connector
The F-type connector is widely used in fields such as cable television, satellite television, and the connection between cable television modems and televisions, with a characteristic impedance of 75 ohms. This connector is inexpensive and easy to insert, making it ideal for video signal transmission in home entertainment systems.
7. TNC connector
The TNC connector adopts a threaded connection method, which is more secure than some bayonet-type connections and can maintain stable connection even in vibrating environments. Therefore, it performs excellently in mobile communication devices.
8. UHF connector
Although UHF connectors have a long history, modern testing has shown that they are more suitable for frequencies around and below 100MHz. Due to their design characteristics, they do not have waterproof capabilities, so special attention should be paid to the impact of natural conditions when setting them up outdoors.
9. DIN (7/16 DIN) connector
The DIN connector is a threaded connector with a relatively large 50 ohm impedance, featuring robustness, stability, low loss, and high operating voltage. Most of them also have a waterproof structure. They are widely used outdoors as connectors for medium and high-energy transmission, such as base station antenna feeder connectors and antenna connectors.
10. MCX connector
The MCX connector is smaller than the SMB connector and employs a push-in connection method, which enables quick connection and disconnection of the connector. It maintains good electrical performance up to 6GHz and is suitable for a variety of cables, including semi-rigid and flexible cables.
