Spectrum management of pulse transmission line using an absorptive high-cut filter - a proposal to operate a 200 MHz clock bus

摘要

A compact absorptive high-cut filter having small reflection has been fabricated by a helical transmission line embedded in a lossy magnetic material. Experiments have shown that the clock speed of a computer bus was accelerated by installation of the filter. The theoretical considerations on this clock time improvement has given an idea of the spectrum management that means the control of the spectrum distribution in the signal line to establish the optimum operation. The spectrum management will make it possible to take more effective EMI countermeasures for the general RF equipment as well as the pulse circuit.