Phase synchronizing circuit

Phase-locked loop frequency shift key modulator

Piezo-optic, total internal reflection modulator

PLL modulation circuit

PLL stabilized frequency modulator with extended low frequency r

Plural oscillator phase continuous frequency encoder

Plural transistor oscillator phase continuous frequency encoder

Post pulse shutter for laser amplifier

Power-dividing and modulating arrangement

Pre-distortion shaping network

Precision phase modulators utilizing cascaded amplitude modulato

Prediction differential pulse code modulation system with adapti

Predictive distortion reduction in AM stereo transmitters

Preparation of gravure printing surfaces

Programmable multitone DPSK modulator

PSK digital echo modulator with reduced memory capacity required

PSK modulator with noncollapsable output for use with a PLL powe

PSK Modulator with preset amplitude and phase corrections for ea

Pulse amplitude modulator

Pulse code transmitter and receiver designed to produce uniform