Direct current magnetized hybrid transformer

Direct current transmission with two parallel circuits

Directional coupler

Directional coupler cascading for signal enhancement

Directional coupler having interdigital comb electrodes

Directional power detector for propagating waves

Discrete transversal filter

Distortion-corrector for microwave tubes

Distributed IMPATT structure

Distributed resistance-capacitance component

Drive-in theater audio system

Driving point impedance derived from a transfer impedance

Dual mode filter

Dual sidestepping SWIF and method

Dual-coupled monolithic crystal element for modifying response o

Duplexed front-end for a radio transceiver system

Dynamic range extension for an electronic circuit

E plane folded hybrid with coaxial difference port

E-H matching device and apparatus and method for automatically m

Echo reduction on bit-serial, multi-drop bus