Craig Schlottmann

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The RASP 2.8 is a very powerful reconfigurable analog computing platform with thirty-two computational analog blocks (CABs). Each CAB has a wide variety of sub-circuits ranging in granularity from multipliers and programmable offset wide linear range Gm blocks to NMOS and PMOS transistors. The programmable interconnects and circuit elements in the CAB are(More)
—This paper presents a solid foundation for implementing analog vector-matrix multipliers (VMMs) in field-pro-grammable analog arrays (FPAAs). Custom analog VMMs have been demonstrated to be 1000 times more power efficient than commercial digital implementations. However, no previous analog VMM discussion has carefully provided all of the implementation and(More)
Field Programmable Analog Arrays (FPAAs) are useful for both research and teaching [1]. Previous Georgia Tech FPAA ICs have been programmed using a self contained development platform that included a commercial FPGA development board, a custom FPAA board, and a AC-DC power module. This previous hardware platform [2] fit into an enclosure about the size of a(More)
This paper presents a vector-matrix multiplier (VMM), which can be easily implemented on a field programmable analog array (FPAA). This VMM can be synthesized directly into the switch-fabric of the FPAA, allowing for incredibly dense matrix operations. As an important aspect of this system, we utilize a complete chain of tools that compile the VMM design(More)
—The modulation and demodulation blocks in an orthogonal frequency-division multiplexing (OFDM) system are typically implemented digitally using a fast Fourier transform circuit. We propose an analog implementation of an OFDM demodulator as a means for reducing power consumption. The proposed receiver implements the discrete Fourier transform (DFT) as a(More)