The Radisol is a device that has the function of suppressing interference between antennas in close proximity to each other. We produce magnetic coupling by placing the two coils of L1 and L2 in close proximity to each other with our unique multilayer technology. In addition, this forms a structure that generates mutual inductance between the short paths. This mutual inductance and L2 and C1 form a parallel resonant circuit, which suppresses unnecessary power inflow and interference to improve the antenna characteristics.
This device is a two-terminal ultra-small chip component with a size of 0603 mm. It is possible to use the mounting land of the existing matching circuit as it is without affecting the matching characteristics by also adding improvements in the circuit to suppress the inductance value of the path through the band. Moreover, the Radisol makes it possible to take a measure against interference with one element in comparison to a measure against interference using a parallel resonant circuit consisting of the two elements of L and C. Therefore, the mounting area can be reduced by approximately 62% compared to the two-element measure against interference.