Method and device for amplifying radio frequency signal

• Main Authors: BARNETT KENNETH CHARLES, KIM TAE WOOK
• Format: Patent
• Language: Chinese; English
• Published: 10.05.2017
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

The invention relates to a method and device for amplifying a radio frequency signal. Specifically, the invention relates to a frequency-selective low noise amplifier (LNA) with wide-band impedance and noise matching. The LNA may include a closed loop circuit that supports wideband input matching. For example, the closed loop circuit may be configured to impedance match an input signal and provide a low noise figure. In addition, the LNA may include an open loop circuit that amplifies the input signal and provides high output impedance. The open loop circuit may further include a selectivity filter that filters out frequencies outside a desired frequency band. The LNA may drive a tunable band-pass filter via the open loop circuit. 本发明涉及用于放大射频信号的方法和装置。具体来讲，本发明涉及种具有宽带阻抗及噪声匹配的频率选择性低噪声放大器(LNA)。所述LNA可包含支持宽带输入匹配的闭环电路。例如，所述闭环电路可经配置以阻抗匹配输入信号并提供低噪声系数。另外，所述LNA可包含放大所述输入信号并提供高输出阻抗的开环电路。所述开环电路可进步包含滤除在所需频带外的频率的选择性滤波器。所述LNA可经由所述开环电路驱动可调谐带通滤波器。