EDN

RF Fundamentals: What actually creates the 90 degree coupler phase shift? Part 3

A scattering matrix (or S parameter matrix) can be used to describe coupler performance with any passive termination. The S parameters within the matrix are measured using terminations which are equal ...
Electronic Design

Addressing RF Coupling in Wireless SoC System Design

Potential sources of RF coupling. How to cut some of the coupling sources. Best practice design to create a system that’s immune to coupling. Wireless system-on ...
Business Wire

Microlab Demonstrates New Smart Coupler Technology for Real-Time Public Safety Wireless System Monitoring

PARSIPPANY, N.J.--(BUSINESS WIRE)--Microlab, a Wireless Telecom Group Company (NYSE American: WTT), today demonstrated the world’s first radio frequency (RF) coupler with embedded signal monitoring ...
EDN

RF Fundamentals: What actually creates the 90 degree coupler phase shift? Part 2

The term ζ is the coupling factor and is equal to the magnitude of the maximum coupling between the lines. The maximum coupling is written as maximum coupling = ζdB = 20Log(ζ) for BL = π/2. With ...