Radio Susceptibility Follows Laws of Physics
Publication: EE Times Communications Designline
December 14, 2011 -- Engineers often wish that radio susceptibility (RS) or radio immunity could be addressed with a vaccine or some other form of cure-all. Conquering the RS problem is not that easy, however, because the laws of physics apply in electronic systems.
RS is a system specification primarily for radio ICs, with a few exceptions. Most of these circuits in most systems are isolated from the external world by the case (shielding) power-supply decoupling networks, powerline filters and isolation circuits. There are two exceptions to this norm: radio devices that are directly connected to antennas, and other devices connected to system input and output ports.
Adding complexity to enable RS protection for internal system parts is not a cost-effective strategy.
By Bill Laumeister. (Laumeister is an engineer in strategic applications with the Precision Control Group at Maxim Integrated Products.)
Reprinted from SOCcentral.com, your first stop for ASIC, FPGA, EDA, and IP news and design information.