5Ghz Chirp Signal Generator for Broadband FMCW Radar Applications

Hobden, Peter and Srivastava, Saket (2018) 5Ghz Chirp Signal Generator for Broadband FMCW Radar Applications. In: IEEE International Symposium on Smart Electronic Systems, 17-19 Dec 2018, Hyderabad, India.

5Ghz Chirp Signal Generator for Broadband FMCW Radar Applications
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Item Type:Conference or Workshop contribution (Presentation)
Item Status:Live Archive


Direct digital synthesis (DDS) is a method of producing an RF analogue waveform which is usually a sine wave. However, there are a limited number of devices capable of producing a high frequency output (of more than 2 GHz). To generate com-plex waveforms, you ideally require a high-end expensive FPGA board with on-board high speed SerDes transceivers coupled with a DAC. The ‘Analog devices’ AD916X series is one of the few devices that can output frequencies over 5 GHz. In this pa-per, we present a low-cost implementation scheme for producing high frequency waveform patterns using Xilinx FPGAs and AD9164, with the minimum of latency. Our proposed solution makes use of the Xilinx 7 series and Ultrascale devices, using the high speed SerDes channels over the FMC connector together with the PCIe bus for fast loading of patterns. With our pro-posed solution it is easy to generate and play back complex waveforms, while maintaining a jitter free and low phase noise output. One of the most important application areas that would benefit from our proposed implementation is the generation of high frequency FMCW radar chirps and simulating target re-sponses especially in the upcoming 77GHz frequency range where the baseband can sweep to 4 GHz.

Keywords:FMCW radar, Signal Generator, DDS, SPI, SerDes, System on Chip, SoC
Subjects:H Engineering > H690 Electronic and Electrical Engineering not elsewhere classified
G Mathematical and Computer Sciences > G420 Networks and Communications
H Engineering > H600 Electronic and Electrical Engineering
H Engineering > H640 Communications Engineering
H Engineering > H610 Electronic Engineering
Divisions:College of Science > School of Engineering
ID Code:34436
Deposited On:11 Dec 2018 16:10

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