Calibration-free broadband low noise amplifier structure and method for eliminating out-of-band blocking

• Main Authors: KANG PIL-SUNG, HAN JEONG-HWAN, JUNG JUHEE
• Format: Patent
• Language: Chinese; English
• Published: 12.01.2024
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

A broadband low noise amplifier structure for eliminating out-of-band blocking, the broadband low noise amplifier structure comprising: a transconductance preamplifier stage configured to convert a voltage signal to a current signal; a filter stage comprising a main path and an auxiliary path connected in parallel, the main path delivering a first signal, the first signal comprising all of the current signals, and the auxiliary path delivering a second signal, the second signal comprising only an out-of-band portion of the current signals; and a combination stage configured to output a third signal corresponding to a difference between the first signal and the second signal, the third signal including only an in-band portion of the current signal. 一种宽带低噪声放大器结构，其用于消除带外阻塞，所述宽带低噪声放大器结构包括：跨导前置放大器级，其配置成将电压信号转换为电流信号；滤波器级，其包括并联连接的主路径和辅助路径，所述主路径传递第一信号，所述第一信号包括所有的电流信号，以及所述辅助路径传递第二信号，所述第二信号仅包括所述电流信号的带外部分；以及组合级，其配置成输出对应于所述第一信号和所述第二信号之间的差的第三信号，所述第三信号仅包括所述电流信号的带内部分。