中图分类号：TN851.4 文献标志码：A DOI: 10.16157/j.issn.0258-7998.267902 中文引用格式： 尤蕾渊，刘红梅，卢肖锋，等. 0.1~10 GHz超宽带射频接收前端设计[J]. 电子技术应用，2026，52(9)：100-104. 英文引用格式： You Leiyuan，Liu Hongmei，Lu Xiaofeng，et al. Design of a 0.1 to 10 GHz ultra-wideband RF receiver front-end[J]. Application of Electronic Technique，2026，52(9)：100-104.
Design of a 0.1 to 10 GHz ultra-wideband RF receiver front-end
You Leiyuan1，Liu Hongmei2，Lu Xiaofeng2，Hou Qiaomu2，Xu Gaoming1，Liu Taijun1
1.Faculty of Electrical Engineering and Computer Science， Ningbo University；2.Ningbo Electronic Navigation Co.，Ltd.
Abstract： To meet the requirements of wide-spectrum monitoring for receivers with large bandwidth, high dynamic range, and strong anti-interference capability, this paper designs an ultra-wideband RF receiver front-end system based on a superheterodyne dual-conversion architecture, covering the operating frequency band from 0.1 to 10 GHz. By employing a dual-path parallel low-noise amplifier (LNA) structure, the receiver′s ability to capture weak signals across its wide operating frequency range is effectively enhanced. Through rational frequency planning and the design of an image-rejection filter bank, combined with the introduction of multiple high-roll-off bandpass filters at the intermediate frequency (IF) stage, the receiver′s suppression capability against image interference and adjacent-channel interference is significantly improved. The measured results show that within the operating frequency band, the noise figure is less than 6.13 dB, the gain is greater than 47 dB, the gain dynamic range exceeds 83 dB, the output third-order intercept point (OIP3) is greater than 25.7 dBm, the adjacent-channel rejection is greater than 36.9 dBc, the image rejection is greater than 64 dBc, and the Error Vector Magnitude (EVM) of a 64QAM modulated signal at a symbol rate of 10 Msym/s is less than 2.89%. All performance metrics meet the design requirements.
