2.0 GHz Sampling Rate Transversal Filter
Abstract
A variable weight transversal filter was used to process analog signals in real time. The length of the delay lines between filter taps determined the sampling rate. The delay lines were made from optical fibers. The variable tap weights were implemented using integrated optical couplers under computer control. An electronic RF signal was input to the transversal filter by externally modulating a laser diode. The RF power out of the transversal filter was measured using a spectrum analyzer. The dynamic range of the filter was found to be greater than 70 dB. The factors which limit the operating performance of the filter were calculated. The actual filter response agreed well with predictions based on computer simulations. This work can be extended up to 16 GHz sampling rates using current technology.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1992
- Accession Number
- ADA250244
Entities
People
- D. M. Gookin
- M. H. Berry
Organizations
- Naval Command, Control and Ocean Surveillance Center