Abstract: Embodiments of the present invention provide arrays of electrical circuits having one or more chirped elements or components for providing output signals to corresponding arrays of electro-optic devices. Certain embodiments of the present invention include a plurality of modulator driver circuits, each of the plurality of driver circuits configured to be substantially identical to each other and provide a corresponding one of a plurality of modulator drive signals to a respective one of a plurality of electro-optic modulators, each of the plurality of modulator driver circuits being chirped to provide a desired output to the corresponding electro-optic modulator for enhanced operation.

Abstract: A resonant modulator device and process are described that provide enhanced resonant frequency waveforms to electrical devices including, e.g., laser devices. Faster, larger, and more complex modulation waveforms are obtained than can be obtained by use of conventional current controllers alone.

Abstract: An amplitude control system uses a pair of parallel integrators to rapidly adjust the amplitude of a test signal between two precisely determined power levels in an RF signal generator. The amplitude control system initializes a first power level by switching a first integrator into a feedback signal path to establish a first drive voltage, corresponding to the first power level. A second power level is initialized by switching a second integrator into the feedback signal path to establish a second drive voltage, corresponding to the second power level. The amplitude control system then alternately switches each of the integrators into the feedback signal path to alternately apply the first and second drive voltages to a level modulator, which rapidly adjusts the amplitude of the test signal to each of the two initialized power levels.

Abstract: A telemetry system for use in controlling the operation of sensors configured on a rotating blade of a gas turbine engine includes an oscillator for generating a power carrier signal. A mechanism is included for providing command signals that select a mode of operation of the sensors and a telemetry encoder apparatus is used to generate encoder signals for modulating the power carrier signal in accordance with the selected mode of sensor operation. Also included in the present telemetry system is a programmable switch receiving the power carrier signal for modulating the power carrier signal amplitude in accordance with the encoder signals. A resistor shunts the programmable switching mechanism, and a coil transmits the modulated power carrier signal to a transceiver positioned on the turbine blade providing control signals to the sensor and transmitting sensor information to a receiver coil off of the turbine blade.

Abstract: A microwave amplitude modulation system maintains constant amplitude attenuation at very high modulation rates over a broad range of microwave frequencies in response to voltage driving signals derived from modulation signals. In the system, the video input of a shunt-type PIN diode microwave amplitude modulation system is driven by a logarithmic voltage amplifier circuit which receives the modulation signals as an input.

Abstract: In a reflective shunt-diode radio-frequency modulator the shunting diodes are spaces so that the transmission line sections between diode pairs have non-commensurate lengths. The transmission line length sections between diode pairs are selected so that a minimum in the frequency/attenuation curve resulting from one transmission line section/diode pair is cancelled by a maximum in the frequency/attenuation curve from another transmission line section/diode pair. The superposition of the frequency characteristics from all transmission line section/diode pairs results in a structure in which reactive cancellation occurs over the entire operating frequency range. Consequently, it is not necessary to saturate the shunting diodes at the low band end to maintain maximum attenuation. In addition, to improve insertion loss, capacitive stubs are located along the transmission line which modify the filter characteristics when the shunting diodes are turned "off".

Abstract: A system is described for using the modulation of the phase of a RF carrier as means of transmitting information. The RF input is split into four quadrature components each of which is passed through individual amplitude control attenuators and then summed in a combiner to create the required phase-controlled RF signal. The resultant signal is then amplified in an RF signal amplifier chain as required to achieve the desired output level. The RF output level is sampled and routed back to an in-phase splitter the output of which is compared to the corresponding individual quadrature components of the unmodulated RF signal to generate a signal which is compared with a processor generated modulation reference signal in a control loop amplifier and the resulting error signal is applied to the individual attenuators to adjust the output amplitude of each quadrature component. The quadrature components are then combined to obtain the desired phase-modulated RF output signal.