Bias-T

Bias-T Power Inserter

 

The Bias-T, or Current injector, as it is sometimes called, is designed for injecting DC power onto the coaxial cable leading up to the tower to feed Tower Mounted Amplifiers. Rugged construction and broad bandwidth (800MHz to 2200MHz) with great Inter Modulation performance and ultra low insertion loss lets you get the most out of your system performance. Bias-T includes a lightning protection circuit to protect the Power Distribution Unit and the Base Station. A DC isolation circuit is also included for improved RF to DC isolation.

Features:

• Low IMD, IL and VSWR
• Lightning protection
• 7/16 or N Connector (male or female)

Applications:

Insert DC Power to:
• Antennas
• Amplifiers
• Mast Head units

Specifications:

The 7/16 series name drives from the metric dimensions of the connector interface: 7mm OD of inner contact, 16 mm ID of outer contact. 7/16 connectors are designed for use in communication systems with power levels of 100 watts per channel. Long popular in Europe, the 7/16 interface has gained acceptance in the U.S. for its ability to operate at elevated power levels.

Deutsh Industries Norm (DIN) is an acronym for German standards that apply to 7/16 connectors and are gaining acceptance worldwide. Named after Paul Neill of Bell Labs after being developed in the 1940’s, the Type N offered the first true microwave performance.

The Type N connector was developed to satisfy the need for a durable, weatherproof, medium-size RF connector. 95% of the connectors used between Base Station Front End and Antenna are either N-type or 7/16 connectors. Inter-modulation distortion, a major concern in today’s communication systems, is consistently low with these connectors. Typical performance is -125 dBm (-168 dBc).

Bias-T Connectors: