Digital sub-band filters

Digital word output high-pass filter apparatus

Digital-to-analogue conversion

Digitalized filter

Digitally controlled attenuator

Digitally controlled attenuator

Digitally controlled frequency filter

Digitally controlled transversal equalizer

Digitally programmable active rc bandpass filter with...

Direct turn step attenuators

Directional communication signal tap

Directly tuned filter and method of directly tuning a filter

Discrete transversal filter

Dispersion compensated circuitry for analog charged systems

Dispersion compensation technique and apparatus for...

Dispersive delay devices

Dispositif de filtrage a dissipation d'energie dans la bande...

Distributed constant type delay line device and a...

Distributed registor-capacitor network and methods of...

Distribution type delay line