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- W2116727351 abstract "A real-time, low-power digital quadrature demodulator is proposed to process ultrasound radio frequency signals in both pulse and continuous modes. Two finite impulse response filters are combined to build a Hilbert transform and a linear approximation architecture that allows achieving the required square root operations of quadrature demodulator. The complexity and accuracy of proposed demodulator are analyzed and successfully integrated in an FPGA as a low-power building block. Results show the proposed digital back-end demodulator is accurate, which motivates us to integrate in a miniaturized ultrasound receiver. Only 12 MULT18times18 and 1473 slices of the FPGA resources were required to synthesize the quadrature demodulator. Also, real-time images were acquired from a reference phantom demonstrating the feasibility of using the proposed architecture to accomplish real-time digital quadrature demodulation of echoes resulting from ultrasonic signals." @default.
- W2116727351 created "2016-06-24" @default.
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- W2116727351 date "2008-05-01" @default.
- W2116727351 modified "2023-09-24" @default.
- W2116727351 title "New digital quadrature demodulator for real-time hand-held ultrasound medical imaging device" @default.
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- W2116727351 doi "https://doi.org/10.1109/iscas.2008.4542076" @default.
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