一种宽带毫米波幅度检测方法

A broadband millimeter wave amplitude detection method

摘要:

随着近年来电子信息技术的快速发展，毫米波更多地应用到通信、成像、电子对抗、雷达与制导等系统中。针对当前国产连续检波对数视频放大器(SDLVA)难以在毫米波频段进行连续检波的局限，提出基于下变频模式的检波电路设计方案。通过采用内置本振源将26~38 GHz的射频信号下变频到3~15 GHz，再采用国产化SDLVA芯片对3~15 GHz进行连续检波对数视频放大。产品设计和测试表明，该毫米波宽带检波可在-55~+70 ℃宽温度范围内实现-57 dBm的灵敏度和37 dB的大动态检波输出。产品具有全国产化、小型化的特点，在宽带毫米波检波中具有较大优势。

Abstract:

With the rapid development of electronic information technology in recent years, millimeter waves have been increasingly applied to communication, imaging, electronic countermeasures, radar, and guidance systems. In response to the limitation that domestic Successive Detector Logarithmic Video Amplifiers(SDLVAs) have difficulty in continuous detection in the millimeter wave band, a detection circuit design scheme based on the down-conversion mode is proposed. By using an internal local oscillator to down-convert the 26~38 GHz RF signal to 3~15 GHz, and then using a domestic SDLVA chip to perform continuous detection logarithmic video amplification on 3~15 GHz, the product design and testing show that this millimeter wave broadband detection can achieve a sensitivity of -57 dBm and a large dynamic detection output of 37 dB in a wide temperature range of -55~+70 ℃. The product features full domestication and miniaturization, giving it a significant advantage in broadband millimeter wave detection.