Apparatus and method for modulation of a curl-free magnetic vect

Apparatus and method providing improved control of a laser beam

Apparatus equipped with a transmitting and receiving station for

Apparatus for amplitude modulating the output of a laser diode o

Apparatus for external modulation of high efficiency CO.sub.2 la

Apparatus for frequency correction in a frequency synthesizer

Apparatus for generating constant-envelope, angle-modulated puls

Apparatus for providing a carrier signal with two digital data s

Apparatus for the gated modulation of a radio-frequency carrier

Arc-cosine phase modulators

Ask modulator with frequency dependent voltage divider

Automatic leveling stabilized VHF-FM frequency synthesizer

Automatic modulation percentage control for amplitude modulated