公开(公告)号：US11223337B2

公开(公告)日：2022-01-11

申请号：US16990967

申请日：2020-08-11

Applicant: RichWave Technology Corp.

Inventor： Hwey-Ching Chien ,  Chun-Han Tai

IPC: H03F1/32 ,  H03F3/24

Abstract: A logarithmic power detector includes a power distributor, a first detection circuit, a second detection circuit and an output circuit. The power distributor is used to generate a first power signal and a second power signal according to an input signal. The first detection circuit is used to attenuate the first power signal to generate a first rectified signal, filter the first rectified signal to generate a first low-pass signal, and amplify the first low-pass signal to generate a first amplification current. The second detection circuit is used to attenuate the second power signal to generate a second rectified signal, filter the second rectified signal to generate a second low-pass signal, and amplify the second low-pass signal to generate a second amplification current. The output circuit is used to receive the first amplification current and the second amplification current to generate a converted voltage related to the input signal.

公开(公告)号：US20210067108A1

公开(公告)日：2021-03-04

申请号：US16990967

申请日：2020-08-11

Applicant: RichWave Technology Corp.

Inventor： Hwey-Ching Chien ,  Chun-Han Tai

IPC: H03F3/24

Abstract: A logarithmic power detector includes a power distributor, a first detection circuit, a second detection circuit and an output circuit. The power distributor is used to generate a first power signal and a second power signal according to an input signal. The first detection circuit is used to attenuate the first power signal to generate a first rectified signal, filter the first rectified signal to generate a first low-pass signal, and amplify the first low-pass signal to generate a first amplification current. The second detection circuit is used to attenuate the second power signal to generate a second rectified signal, filter the second rectified signal to generate a second low-pass signal, and amplify the second low-pass signal to generate a second amplification current. The output circuit is used to receive the first amplification current and the second amplification current to generate a converted voltage related to the input signal.