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http://dx.doi.org/10.5515/KJKIEES.2018.29.2.138

Wideband Chirp Signal Generation for W-Band SAR  

Lee, Myung-Whan (millisys Inc.)
Jung, Jin Mi (millisys Inc.)
Lee, Jun Sub (School of Mechanical Engineering, Gwangju Institute of Science and Technology)
Singh, Ashisg Kumar (School of Mechanical Engineering, Gwangju Institute of Science and Technology)
Kim, Yong Hoon (School of Mechanical Engineering, Gwangju Institute of Science and Technology, millisys Inc.)
Publication Information
The Journal of Korean Institute of Electromagnetic Engineering and Science / v.29, no.2, 2018 , pp. 138-141 More about this Journal
Abstract
In this paper, we describe the designed digital waveform of a linear frequency-modulated (FM) chirp signal using field-programmable gate arrays (FPGAs) for image radar, and this signal is modulated with an I-Q modulator, and multiplied by 24 frequency multipliers to obtain a 94-GHz W-band wideband chirp generator. The developed chirp generator is an FM signal with a 94-GHz carrier frequency and a 960-MHz bandwidth, and the flatness is less than 1.0 dB at intermediate frequency (IF) (3.9 GHz), 2.0 dB in the W-band, and it has a 0.3-W output power in the W-band.
Keywords
FPGA Chirp Signal; W-Band Radar; Frequency Multiplier; Wideband Radar Signal;
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