This article presents delay-correlating direct-sequence spread-spectrum (DS/SS) radars at mm-wave frequencies, which transmit a bit sequence waveform instead of frequency chirps or pulses to estimate time of flight between the radar and scatterers within a scene. The simple modulation and demodulation architecture of the proposed DS/SS radar enables wideband and high-resolution radar measurements without the need for broadband A/D and D/A conversion, making the delay-correlating approach attractive for low-power radar applications. The demonstrated radar system operates at 205 GHz and offers a 3.0 cm range resolution while consuming 614 mW of dc power.

中文翻译：

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工作频率为 183-205 GHz、采用 28nm CMOS 的延迟相关直接序列扩频 (DS/SS) 雷达片上系统

本文介绍了毫米波频率下的延迟相关直接序列扩频 (DS/SS) 雷达，它传输位序列波形而不是频率啁啾或脉冲，以估计场景内雷达和散射体之间的飞行时间。所提出的 DS/SS 雷达的简单调制和解调架构支持宽带和高分辨率雷达测量，而无需宽带 A/D 和 D/A 转换，使得延迟相关方法对低功率雷达应用具有吸引力。演示的雷达系统在 205 GHz 下运行，提供 3.0 cm 的距离分辨率，同时消耗 614 mW 的直流功率。