公开(公告)号：US10992268B2

公开(公告)日：2021-04-27

申请号：US16571182

申请日：2019-09-15

Applicant: RichWave Technology Corp.

Inventor： Shyh-Chyi Wong ,  Cheng-Min Lin

IPC: H03F3/191 ,  H03F1/56 ,  H03F1/02

Abstract: A radio frequency signal amplification device includes an amplification circuit, an impedance matching circuit, a frequency detection circuit, and a control circuit. The amplification circuit has an input terminal and an output terminal. The amplification circuit amplifies a radio frequency (RF) signal received from the input terminal, and generates an amplified radio frequency signal to the output terminal. The impedance matching circuit is coupled to the input terminal or the output terminal of the amplification circuit. The impedance matching circuit receives the radio frequency signal and provides an impedance matching the radio frequency signal, or receives the amplified radio frequency signal and provides an impedance matching the amplified radio frequency signal. The frequency detection circuit determines a frequency band to which the radio frequency signal belongs. The control circuit adjusts the impedance of the impedance matching circuit according to the frequency band.

公开(公告)号：US20210050824A1

公开(公告)日：2021-02-18

申请号：US16992116

申请日：2020-08-13

Applicant: RichWave Technology Corp.

Inventor： Cheng-Min Lin

IPC: H03F1/56 ,  H03H7/38 ,  H04B1/04 ,  H03F3/195

Abstract: A radio frequency amplifier circuit is provided. A matching circuit is configured on a radio frequency path of an input end or an output end of an amplifier. An inductance-capacitance resonance circuit and the matching circuit share an inductor included in the matching circuit to generate a corresponding resonance frequency. The matching circuit provides an input impedance or an output impedance matching two fundamental tones in a radio frequency signal at a first frequency and a second frequency. The inductance-capacitance resonance circuit provides a filtering path for filtering a signal component outside a frequency band formed by the first frequency and the second frequency in the radio frequency signal.