Surface acoustic wave filter
Surface acoustic wave filter
Surface acoustic wave filter
Surface acoustic wave generating apparatus including a positive
Surface acoustic wave multi-channel filter
Surface acoustic wave notch filter
Surface elastic wave device
Surface elastic wave filter
Surface wave communication system
Surface wave device having enhanced reflectivity gratings
Surface wave electro-mechanical device
SWD FM detector and IF filter
System and method for calibrating a ferroelectric phase shifter
System filter for double frequency utilization
System for automatic equalization
System for automatic equalization
Systems for transmitting data between distant locations