US 12,463,599 B2
Amplification device
Kuang-Lieh Wan, Taipei (TW)
Assigned to RichWave Technology Corp., Taipei (TW)
Filed by RichWave Technology Corp., Taipei (TW)
Filed on May 20, 2022, as Appl. No. 17/749,157.
Claims priority of provisional application 63/191,336, filed on May 21, 2021.
Prior Publication US 2022/0376661 A1, Nov. 24, 2022
Int. Cl. H03F 3/19 (2006.01); H03F 1/56 (2006.01); H03F 3/21 (2006.01)
CPC H03F 3/19 (2013.01) [H03F 1/56 (2013.01); H03F 1/565 (2013.01); H03F 3/211 (2013.01); H03F 2200/105 (2013.01); H03F 2200/387 (2013.01); H03F 2200/451 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An amplification device, comprising:
an amplification unit comprising an input terminal configured to receive a radio-frequency signal, an output terminal configured to output an amplified radio-frequency signal, and a detected terminal configured to output a detected signal related to the radio-frequency signal;
an impedance unit configured to provide an impedance, the impedance unit comprising an input terminal coupled to the detected terminal of the amplification unit and configured to receive the detected signal, and an output terminal configured to output a power signal; and
a log power detector configured to generate a power indication signal according to the power signal, the log power detector comprising an input terminal coupled to the output terminal of the impedance unit, and an output terminal configured to output the power indication signal;
wherein the log power detector has a parallel structure, and an impedance of the impedance unit is 5 to 7 times an impedance of the amplification unit.