Masaru Chino

Soft and dry phantom modeling material using silicone rubber with carbon fiber

New phantom models that can simulate the effect of electromagnetic waves on human tissues have been developed. These phantom models can be designed to fit a wide range of complex permittivities by using two types of carbon fiber within a silicone rubber base. Tissues with low water content, such as fat and bone, and tissues with high water content, such as skin and muscle, can both be modeled using the phantom models discussed in this paper. When using conventional phantom model materials, care must be taken to prevent decomposition and dehydration during storage. The materials used for these new phantom models do not dry out and can be used repeatedly with reliable results.

Double-layer type microwave absorber made of magnetic-dielectric composite material

Abstract Changing the combination of 2nd layer in a double-layer type microwave absorber, the matching frequency (8.10–10.88 GHz), maximum reflection loss and matching thickness at the matching frequency could be systematically controlled and compared with those of single-layer type microwave absorber.

Microwave absorbers using ferroelectric/rubber composite structure and their evaluation

Abstract A thin film microwave absorber is proposed using a ferroelectric/rubber composite (FRC) structure. The FRC structure consists of a lead zirconate titanate ferroelectric ceramic powder and a rubber composite. The operational principle and experimental results are discussed. A microwave absorber was obtained experimentally with a 1.65 mm thickness, yielding a bandwidth of 480 MHz at a central frequency of 8.6 MHz and analyzed theoretically.