Digitized phase modulating means

Diode ring mixer

Direct digital amplitude modulator

Direct FM crystal-controlled oscillator

Direct modulation 4 phase PSK modulator

Directional PSK modulation and demodulation system

Double balanced modulator-demodulator

Double sideband generation with serrodyne modulators

Double sideband modulator

Double sideband suppressed carrier modulator using surface wave

Double sideband transmission system

Double-balanced modulating and demodulating apparatus

Electro-optical modulator

Electronic modulator for guidance systems

Electrooptic light modulator including weighted interdigital ele

Enhanced coupled, even mode terminated baluns, and mixers and mo

Extended phase-range, high fidelity modulator arrangement

External laser frequency stabilizer

Field effect transistor circuit for modulator and demodulator ap

Filter for converting pulse width modulation to amplitude modula