The Charles Stark Draper Laboratory, Inc.

Wolf Johnson

Robert D Tingley

Eric Karl Mautner

Matthew Muresan

According to one aspect, embodiments of the invention provide a CDC simulation system comprising a timing analysis module configured to receive a circuit design, analyze the circuit design to identify at least one CDC, and generate a report including information related to the at least one CDC, a CDC simulation module configured to communicate with the timing analysis module and to receive the report from the timing analysis module, and a test bench module configured to communicate with the CDC simulation module, to receive the circuit design, and to operate a test bench code to simulate the operation of the circuit design, wherein the CDC simulation module is further configured to edit a top level of the test bench code, based on the received report, such that the test bench module is configured to identify timing violations in the circuit design due to the at least one CDC.

System and process for simulating the behavioral effects of timing violations between unrelated clocks

In a simultaneous transmit and receive (STAR) communication system, an RF signal splitter couples an antenna to an RF transmitter and to an RF receiver, without using a circulator. An adaptive cancellation RF waveform generator generates an adaptive cancellation RF signal to cancel cross-talk from the RF transmitter to the RF receiver. Training signals are used to characterize signal paths within the STAR system and calculate filter coefficients for generating the adaptive cancellation signal.

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Framingham, MA, United States of America

Wolf Johnson