High-Throughput 64K-point FFT Processor for THz Imaging Radar System
| Autor: | Hong-Ke Lin, Chia-Kai Chan, Chih-Wei Liu |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
Standard cell
Hardware architecture Computer science 020208 electrical & electronic engineering Fast Fourier transform 020206 networking & telecommunications 02 engineering and technology law.invention CMOS law Radar imaging 0202 electrical engineering electronic engineering information engineering Electronic engineering Radar Throughput (business) Twiddle factor |
| Zdroj: | VLSI-DAT |
| Popis: | Radar technology and its developments have been important issues for decades. With the growth of semiconductor processing technology, the development of circuit design related to THz technology has gradually been noted such as imaging radar system. However, there are ultra-long series in the application of wideband radar system with high sampling rate. While realizing the ultra-long FFT, it would introduce some design challenges. On the other hand, it needs to achieve a high throughput rate to meet the requirement of real-time processing. In this paper, we implement a 4-parallel 64K-point FFT hardware architecture based on 2-epoch FFT algorithm. With the proposed middle twiddle factor generator, we can reduce a large number of storages for twiddle factor coefficients, so that the area of ROM can be reduced. We implement this work in TSMC 90 nm CMOS technology with high- Vt standard cell library and the total gate counts are around 3974.1k. The maximum operating frequency of the system is 390 MHz. When operating at the maximum operating frequency, the throughput reaches 1.57 GS/s and it consumes 0.2811 W (@0.9 V). |
| Databáze: | OpenAIRE |
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