Accession Number:

ADA250244

Title:

2.0 GHz Sampling Rate Transversal Filter

Descriptive Note:

Corporate Author:

NAVAL COMMAND CONTROL AND OCEAN SURVEILLANCE CENTER RDT AND E DIV SAN DIEGO CA

Personal Author(s):

Report Date:

1992-03-01

Pagination or Media Count:

5.0

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.

Subject Categories:

  • Optics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE