Variable capacitance element controllable by a D.C. voltage

Variable directional coupler having movable coupling lines

Variable resistance circuit

Variable resistance circuit

Voltage-controlled filter

Wave filter and process for making same

Wave propagation structures for eliminating voltage surges and a

Waveform equalizing filter unit

Waveguide

Waveguide coupler having helically arranged coupling slots

Waveguide directional coupler

Waveguide filter employing dielectric resonators

Waveguide low pass filter

Waveguide power limiter

Wavelength filters

Weighting surface wave filters by withdrawing electrodes

Wide band low loss acoustic wave device

Wide power range microwave feedback controller

Wideband feedforward gallium arsenide AGC circuit

Wound resistor-capacitor network and method of forming