966851-1 Connectors, Interconnects

966851-1 are coaxial connectors, also known as contacting RFI coaxial connectors, that are designed for microwave and radar applications. They are a type of Radio Frequency Interference (RFI) coupler that works in a wide range of frequency bands, typically offering higher energy transfer efficiency than other types of coaxial connectors. The 966851-1 is designed for use in both military and commercial systems including aircraft, aircraft radar, shipboard electronic equipment, and land-based applications.

Basic Construction and Operation

The 966851-1s are constructed from brass with a gold-plated finish that offers superior resistance to corrosion and oxidation. The inner and middle bodies are made of a high-grade polyethylene material that helps reduce the weight of the unit. The outer body consists of a stainless steel sleeve that offers additional strength and protection against mechanical shock. The interface between the inner and outer bodies are made of a PTFE insulator that helps minimize unwanted interference.

At the center of the 966851-1 is a dielectric pin (typically polyamide) that carries a center-contact post. This post is designed to beeped into and out of the interface with a plunger mechanism, which helps ensure a secure and reliable connection. This post carries the RF signal and extends through the center of the PTFE insulator and out of the connector. The signal is then picked up and transmitted through a shielded cable, which helps protect it from external interference.

Application Areas

The 966851-1s are best suited for applications in which high power is required, as is often the case in wireless communications, such as radio, television, and other digital audio applications. They are also used in military and aerospace applications, providing reliable, low-loss connections for radars, antennas, and other military communications systems. Other popular applications of the connector include medical imaging, satellite communications, farming and agriculture, automotive, and more.

Working Principle

The 966851-1s are designed to offer low insertion loss and return loss, allowing them to transmit high-frequency signals between antennas and network infrastructure with minimal interference or signal loss. They work by creating a shielded interface between the inner and outer conductor of the connector. A ferrule seals the interface and provides an effective e-field shielding. This ensures that all transmitted signals remain within the shielded cavity, preventing any external interference from affecting the signal.

The center contact post also helps minimize signal loss, as it acts as a bridge between the inner and outer conductor. This helps reduce the amount of RF energy that is lost when the signal is transmitted across the interface. It also helps reduce crosstalk between the inner and outer conductors, eliminating any interference that could be caused by external electrical fields.