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Frequency Sources in W-band Radar Front-end with Low Phase Noise

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Abstract

A W-band coherent stepped-frequency pulsed radar front-end is developed. It consists of a millimetre wave transmitting source, a mm-wave local source, a DDS with multi frequency points output and two microwave sources serving as local oscillators. All the sources are coherent with the 120 MHz referenced crystal oscillator. The mm-wave sources are realized by frequency multiplier chain, up-conversion and injection locking. The phase noise of fundamental-wave injection-locked W-band harmonic Gunn oscillator output signal achieves −98 dBc/Hz at 10 kHz offset and the spurious output is less than −50 dBc. The received intermediate frequency signal is also presented.

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Authors and Affiliations

  1. School of Electronic Engineering, University of Electronic Science and Technology of China, Chengdu, 610054, China

    Yonghong Zhang, Xiaohong Tang, Yong Fan & Zhengde Wu

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  1. Yonghong Zhang
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  2. Xiaohong Tang
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  3. Yong Fan
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  4. Zhengde Wu
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Correspondence to Yonghong Zhang.

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Zhang, Y., Tang, X., Fan, Y. et al. Frequency Sources in W-band Radar Front-end with Low Phase Noise. Int J Infrared Milli Waves 29, 142–147 (2008). https://doi.org/10.1007/s10762-007-9314-9

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  • DOI: https://doi.org/10.1007/s10762-007-9314-9

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