US 12,308,867 B2
Signal feedback gain circuit
Miaobin Gao, New Taipei (TW); and Chia-Chi Hu, New Taipei (TW)
Assigned to LERAIN TECHNOLOGY CO., LTD., New Taipei (TW)
Filed by LeRain Technology Co., Ltd., New Taipei (TW)
Filed on Apr. 11, 2022, as Appl. No. 17/717,577.
Claims priority of application No. 110144842 (TW), filed on Dec. 1, 2021.
Prior Publication US 2023/0170924 A1, Jun. 1, 2023
Int. Cl. H04B 1/04 (2006.01)
CPC H04B 1/04 (2013.01) [H04B 2001/0416 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A signal feedback gain circuit, applied to a signal transmission channel to compensate attenuation of a transmission signal in the signal transmission channel, the signal transmission channel being for transmitting the transmission signal to an electronic module, the signal feedback gain circuit comprising:
a signal input terminal, for inputting the transmission signal;
a summing point, connected to the signal input terminal;
a gain module, connected to the summing point so as to input the transmission signal and to perform a gain process on the transmission signal;
a signal output terminal, connected to the gain module so as to receive the transmission signal and output it to the electronic module; and
a plurality of feedback paths, connected in parallel to the output terminal so as to input the transmission signal, the plurality of feedback paths further being connected in parallel to the summing point so as to feedback the transmission signal to the summing point such that the plurality of feedback paths is able to adjust a gain curve of the transmission signal; wherein the gain curve has a low-frequency interval and a high-frequency interval and the number of the plurality of feedback paths is for determining the number of break points in the low-frequency interval of the gain curve.