US 12,436,176 B2
Device of measuring duty cycle and compensation circuit utilizing the same
Po-Wei Wu, Taipei (TW); Hsiang-Jen Jao, Taipei (TW); Chih-Sheng Chen, Taipei (TW); and Tien-Yun Peng, Taipei (TW)
Assigned to RichWave Technology Corp., Taipei (TW)
Filed by RichWave Technology Corp., Taipei (TW)
Filed on May 29, 2023, as Appl. No. 18/202,961.
Application 18/202,961 is a division of application No. 17/495,825, filed on Oct. 7, 2021, granted, now 11,703,532.
Claims priority of application No. 110131455 (TW), filed on Aug. 25, 2021.
Prior Publication US 2023/0296655 A1, Sep. 21, 2023
Int. Cl. G01R 29/027 (2006.01)
CPC G01R 29/0273 (2013.01) 18 Claims
OG exemplary drawing
 
1. A compensation circuit comprising:
a resistor-capacitor circuit configured to generate a first voltage when a reference signal is in a first state, and generate a second voltage and a third voltage when the reference signal is in a second state, the resistor-capacitor circuit comprising:
a first resistor-capacitor sub-circuit comprising:
a first path comprising a first resistor;
a second path comprising a second resistor; and
a first storage capacitor shared by the first path and the second path, wherein the first storage capacitor is charged via the first path, or discharged via the second path; and
a second resistor-capacitor sub-circuit, wherein the first resistor-capacitor sub-circuit and the second resistor-capacitor sub-circuit operate simultaneously to compute an ON time of a front end module; and
a control circuit coupled to the resistor-capacitor circuit, and configured to acquire the ON time according to the first voltage, the second voltage, and the third voltage, and comprising an adjustment circuit configured to generate a bias signal according to the ON time, and output the bias signal to the front end module.