US 12,334,878 B2
Electronic device and method including power amplifier module having protection circuit
Jaejin Yang, Suwon-si (KR); and Hyoseok Na, Suwon-si (KR)
Assigned to SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed by SAMSUNG ELECTRONICS CO., LTD., Suwon-si (KR)
Filed on Oct. 19, 2022, as Appl. No. 17/969,302.
Application 17/969,302 is a continuation of application No. PCT/KR2022/013484, filed on Sep. 7, 2022.
Claims priority of application No. 10-2021-0161796 (KR), filed on Nov. 22, 2021.
Prior Publication US 2023/0163730 A1, May 25, 2023
Int. Cl. H04B 1/04 (2006.01); H03F 1/52 (2006.01); H03F 1/56 (2006.01); H03F 3/24 (2006.01); H03K 19/20 (2006.01)
CPC H03F 1/52 (2013.01) [H03F 1/56 (2013.01); H03F 3/245 (2013.01); H04B 1/0458 (2013.01); H03F 2200/426 (2013.01); H03F 2200/451 (2013.01); H03K 19/20 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An electronic device, comprising:
an antenna;
a power amplifier module (PAM) connected to the antenna, and including a power amplifier (PA) configured to amplify a transmitting signal for being transmitted to an external electronic device, and a protection circuit;
a power management integrated circuit (PMIC) configured to supply voltage to the PA; and
at least one processor, wherein the at least one processor is configured to:
via a comparator in the protection circuit, provide a first signal, to a NAND gate in the protection circuit, in response to identifying that the supply voltage provided from the PMIC to the PA reaches to a target voltage corresponding to a transmitting voltage of the transmitting signal
via the NAND gate, provide, to a AND gate in the protection circuit, a second signal indicating a result of a logical operation between the first signal and a bias enable signal for the PA,
via a peak detector in the protection circuit, provide, to the AND gate, a third signal indicating whether the transmitting signal is input to the PAM,
via the AND gate, provide, to a switching circuit, a fourth signal indicating a result of logical operation between the second signal and the third signal,
via the switching circuit in the protection circuit, identify whether to apply a bias voltage to the PA, based on the fourth signal, and
using the PA to which the bias voltage is applied, transmit the transmitting signal, to the external electronic device, via the antenna.