Technology Overview

Variable Frequency Microwave (VFM)

To overcome some of the problems inherent with fixed frequency industrial microwave systems, Lambda offers a range of Variable Frequency Microwave (VFM) products that ensure uniformity over large areas and compatibility with metals and electronic circuits. Lambda customer support staff includes microwave design and service engineers as well as materials scientists ready to assist in customer specific applications.

Microwave heating of electronics?  Only with VFM!	VFM electronic mode stirring eliminates hot spots or arcing

Lambda’s patented VFM technology offers precise control and uniform distribution of microwave energy for a broad range of thermal applications. Unlike conventional industrial microwave ovens that use a fixed frequency magnetron, VFM products use a broadband microwave amplifier where the frequency is swept over the bandwidth. Sweep rate control also ensures that VFM technology is compatible with metallic components or fixtures and without arcing or causing damage to electronic circuitry or semiconductors.

Research tools with very broad bandwidths enable optimum frequency selection and the ability to sweep a smaller band around the center frequency to ensure good microwave energy uniformity.

VFM technology is in production worldwide for the curing of polymeric adhesives and films used in advanced semiconductor and electronic packaging applications.