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For application in a software defined radio, a CORDIC processor has been developed that can operate both in synchronous and asynchronous mode. Each mode of operation has advantages and drawbacks. Depending on the actual application, an optimal trade-off can be achieved by selecting the mode of operation that fits best with system demands. We believe that for a system developer this additional degree of freedom significantly increases the application space. The design has been implemented on a 0.25 μm SiGe:C BiCMOS process. Simulation results using post-layout extracted parameters indicate that the design is competitive both with purely synchronous and purely asynchronous implementations.
Date of Conference: 8-11 April 2002