Patent ID: 11881821
Assignee: SPREADTRUM COMMUNICATIONS (SHENZHEN) CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC H | IPC H

Claim 6:
7. The signal generation circuit according to claim 6, wherein
the comparison unit comprises a first comparator, a second comparator, and a trigger;
the first comparator comprises a first input terminal configured to receive the first voltage, a second input terminal configured to receive a carrier signal generated by the capacitor, and a first output terminal configured to output to the trigger a first comparison signal to cause the trigger to output, based on a voltage of the carrier signal larger than the first voltage, to the first branch circuit the first feedback signal with a second level;
the trigger comprises a first trigger terminal and a first feedback terminal, configured to receive the first comparison signal at the first trigger terminal and output to the first branch circuit the first feedback signal at the first feedback terminal;
the first branch circuit comprises a first current source and a first branch circuit switch;
the first current source is connected in series with the first branch circuit switch, with a current direction being a direction flowing toward the capacitor; the first branch circuit switch connected with the capacitor, configured to disconnect with the capacitor based on the first feedback signal at the second level, to cause the capacitor to discharge through the second branch circuit.