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实用新型
CN207442796U 一种Ka波段MMIC低噪声放大器 有权

一种Ka波段MMIC低噪声放大器
摘要：
本实用新型涉及一种Ka波段MMIC低噪声放大器，主要解决现有技术中的噪声系数高、带内增益平坦度差、线性度差的技术问题。通过采用包括两级放大器、λ/4传输线结构以及三级匹配网络，该两级放大器包括第一级场效应晶体管放大器，第一级栅极偏置网络，第一级漏极偏置网络以及第一级源极的电阻、第一级源极的电容并联网络，第二级放大器，第二级栅极偏置网络，第二级漏极偏置网络以及第二级源极的电阻、电容并联网络；该λ/4传输线结构包括与第一级栅极偏置网络连接的第一传输线网，以及与第一级漏极偏置网络连接的第二传输线网的技术方案，较好的解决了该问题，能够用于Ka波段的通信领域。(ESM)同样的发明创造已同日申请发明专利
摘要（英）：

The utility model relates to a ka wave band MMIC low -noise amplifier mainly solves the technical problem that noise coefficient is high, in -band gain flattening degree is poor, the linearity is pooramong the prior art. Construct and tertiary matching network including dual -stage amplifier, lambda / 4 transmission line knot through adopting, this dual -stage amplifier includes first order fet amplifier, first order grid biasing network, the first order drain electrode biasing network and the resistance of first order source electrode, the capacitance parallel connection network of first order source electrode, secondary amplification ware, second level grid biasing network, resistance, the capacitance parallel connection network of second level drain electrode biasing network and secondlevel source electrode, this lambda / 4 transmission line knot construct the first network of transmission lines that includes with first order grid biasing internet access to and with the technicalscheme of the second network of transmission lines of first order drain electrode biasing internet access, better solution this problem, can be used for the communications field of ka wave band.

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