The R&F Products Division of Laird Technologies offers a complete range of foam products for the microwave design engineer. The RF Foam series can be made in a variety of thicknesses to cover the entire microwave frequency range. Thicker foam performs at lower frequencies. RF Foam can be optimized for reflection loss or insertion loss. It is used to reduce interference in antennas and microwave systems. The following product offerings are available: RFLS - Single layer lossy foam optimized for insertion loss. Insertion loss ranges from 1-50 dB/in. Thickness ranges from 3,18 to 114,3 mm. RFML - Multilayer foam made up of 3 RFLS layers. This graded approach gives good broadband absorption over a wide frequency range. RFRET - Reticulated foam with a continuously graded lossy coating. It provides the optimum in broadband reflectivity performance at the lowest weight. Standard sheet sizes are 609,6 x 609,6 mm. Larger sizes and die cut components are available. Thickness range is 3,18 mm through 114,3 mm. Electrical performance reflectivity is -20 dB over specified range based upon thickness. Electrical performance insertion loss is customer specified from .25 to 50 dB. Weatherproof coatings, custom textile covers, and structural foam versions are available, as well as UL94 VO versions. Laird Technologies GmbH, 83026 Rosenheim, Germany. www.lairdtech.com.