Microwave Bandwidth Active Transversal Filter Concept With MESFETs

An active transversal filter concept for microwave frequencies is proposed. Silicon metal semiconductor field-effect transistors (MESFETs) with high impedances are used as active coupling elements. A hardware implementation yields a minimum interval between equalized pulses of 1.5 ns. Simulations with improved MESFETs predict equalization for smaller pulse intervals than 400 ps.