Projects
Below are some examples of past projects with the major participation of Spectral Research’s President, Dr. Romisch.
The CS-1 is a low-noise microwave synthesizer used as a source for atomic standards in several research laboratories. The 9.192 GHz Synthesizer CS-1 is a high stability and high resolution signal source designed to be used in the implementation of a Cesium atomic clock. An external trigger input may be used to synchronize programmable events such as frequency sweeps, phase modulation and amplitude modulation with external events. The synthesizer is implemented with a flexible modular topology based on a multiplication chain including two ultra-low noise quartz oscillators and a 9.2 GHz DRO (Dielectric Resonator Oscillator). A DDS (Direct Digital Synthesis) allows the programming of the output signal modulations and synchronizations. It is presently produced by SpectraDynamics, Inc.
- Ka-band multi-beam discrete lens array (pdf)with amplitude-controlled steering for fixed-formation satellites, a year-long NASA-funded project. Dr. Romisch was the sole manager of this project, obtained funding renewal and received an Excellence Award from the funding agency. The project is being continued in the Microwave Antenna Group in the ECE Department of the University of Colorado at Boulder. This project was carried out by the President, while employed by the University of Colorado. Funding for this project was provided by the NASA Glenn Research Center.
- Low-noise optoelectronic oscillator (pdf), was developed in Italy by Dr. Romisch during graduate work and subsequently at NIST where it was evaluated for its possible use as a flywheel oscillator for the US primary frequency standards.
- Optoelectronic clock-recovery system (pdf) for Optical Time Domain Multiplexing systems was also developed in Italy during Dr. Romisch’s graduate work and was subsequently granted both EU and US patents (US Patent 6,204,956 B1).
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