​Why do we need N-type connectors in our production?

As an important part of passive devices, RF connectors have good broadband transmission characteristics and a variety of convenient connection methods, so they are widely used in products such as test instruments, weapon systems, and communication equipment. Since the application of RF connectors has almost penetrated all sectors of the national economy, its reliability has attracted more and more attention.

What is the role of the n-type connector?

What is the design of an N-type connector?

What is the development of N-type connectors nowadays?

What is the role of the n-type connector?

1. Applications: wireless, telecommunications systems, outdoor RF cables, instruments, waveguide transmission systems

2. The head has three installation modes: screwing, crimping, and soldering (the inner conductor and the outer conductor).In general, the jump cord adopts the wire connecting and welding method, the flexible cord adopts the crimping method of the outer conductor, the inner conductor has the crimping method, and the welding method, the semi-rigidity adopts the welding method.

3. The connectors used for Jumpers have only N and Din's heads. Other types of connectors are mainly used for flexible and semi-hard wires.

The N head has two types of straight head and elbow, and the diameter of the cable that can be connected is 2.6 - 24mm, in addition, there are N type adapters, attenuators, etc.

What is the design of an N-type connector?

Interface specifications for N and many other connectors are cited in mil-std-348. Initially, the connector was designed to transmit a signal of a maximum of 1 GHz for military use, but today's common n-type connectors can easily handle signals at frequencies up to 11 GHz. Julius botka of Hewlett Packard recently improved the design more accurately to 18GHz. The N male connector is tightened (although there is a version with a hexagonal nut), there is an air gap between the center and the outer conductor. There are 5 / 8-24 UNEF screws for coupling. Amphenol is recommended to fasten with a 15-inch pound (1.7n) torque. The torque limit depends only on the quality and cleanliness of the thread, and the main operating requirements are good radio frequency contacts without obvious steps or gaps, so these values must be regarded as important and not important.

What is the development of N-type connectors nowadays?

The N connector follows the mil-std-348 standard defined by the U.S. military, with 50 and 75-ohm versions. The 50-ohm version is widely used in the infrastructure of land mobile, wireless data, paging, and cellular systems. The 75-ohm version is mainly used for the infrastructure of cable TV systems. Connecting these two different types of connectors can result in damage and/or intermittent operation due to the different diameters of the center pin. Unfortunately, many n-type connectors are unmarked and it is difficult to prevent this from happening in a mixed impedance environment. Some 75-ohm socket manufacturers design them to have sufficient spring yield strength to accept larger 50-ohm pins without irreversible damage, while others do not. Generally, a 50-ohm socket will not be damaged by a 75-ohm pin, but a loose fit means that the contact quality is not guaranteed; This can result in poor operation or intermittent operation, with the thin 75-ohm pin barely matching the larger 50-ohm socket in the female head. 50-ohm N-type connectors are popular in microwave applications and microwave instruments such as spectrum analyzers. The 50 Ω n-type connector is also commonly used for amateur radio equipment (e.g. transceivers) operating in the UHF band.

We can see the huge role that RF connectors play in the information and communication industry, and they have become indispensable components. And LenoRF, a Chinese pioneer in RF interconnects, has committed to providing the most suitable RF connectors at a reasonable price, and whatever it takes to satisfy the customer’s needs.