Low-Power Technique for SRAM-Based On-Chip Arbitrary-Waveform Generator
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- Low-Power Technique for SRAM-Based On-Chip Arbitrary-Waveform Generator
- Song, Taejoong; Lee, Sang Min; Park, Jongmin; Hur, Joonhoi; Lee, Michael; Kim, Kihong; Lee, Chang-Ho; Bien, Franklin; Lim, Kyutae; Laskar, Joy
- Access mode; Address generators; CHIRP signals; CMOS technology; cognitive radio (CR); Cross correlations; Daubechies Wavelet; Low Power; Multi-resolution spectrum sensing; Multi-resolutions; On chips; Operation mode; Power Consumption; Processing applications; Sensing functions; Spurious-free dynamic range; Static random access memory; static random-access memory (SRAM); Supply voltages; Waveform generators
- Issue Date
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- IEEE TRANSACTIONS ON INSTRUMENTATION AND MEASUREMENT, v.60, no.4, pp.1187 - 1196
- A low-power technique for a static random-access memory (SRAM)-based on-chip arbitrary-waveform generator (AWG) is proposed for two types of analog-signal-processing applications: multiresolution spectrum sensing and matched filter. The SRAM has an embedded address generator to limit the operation in a sequential-access mode of the AWG. Then, the power consumption of the AWG is analyzed according to the operation modes in multiresolution and multiwaveform spectrum-sensing functions. The low-power technique reduces power by 18% of the SRAM and the address generator and by about 2.2% of the entire AWG at a 1.8-V supply voltage. The AWG is fabricated in a 0.18-mu m CMOS technology and demonstrates a chirp signal and a Daubechies wavelet with a 45-dBc spurious-free dynamic range and a cross-correlation factor of 0.96-0.988 with ideal signals.
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