Samsung Electronics Co., Ltd.

Bok-Ju Park

Jun-Seok Yang

Hyung-Sun Lim

Hee-Sang Noh

Young-Eil Kim

Ji-seon Paek

Sang-Hyun Baek

Dong-ki Kim

Ji-Seon Paek

An apparatus and method for improving the efficiency of a power supply modulator for modulating a supply voltage of a power amplifier are provided. The apparatus for generating a supply voltage includes a Switching Mode Power Supplier (SMPS) module for generating a current of a power supply signal, and a linear regulator for generating a source current for supplementing an insufficient amount of the current generated by the SMPS module and a sink current for eliminating an excessive amount of the current generated by the SMPS module. The SMPS module generates the current of the power supply signal by selecting at least one of a plurality of power supplies that have different voltages according to a voltage level of an input signal of the SMPS module.

Apparatus and method for modulating supply for a power amplifier

An apparatus and a method for controlling transmission and reception control in a wireless communication system are provided. The apparatus includes at least one voltage regulator, a power source consumer, at least one capacitor, and a controller. The at least one voltage regulator provides a power source that is a regulated voltage. The power source consumer processes a Radio Frequency (RF) signal using the power source that is the regulated voltage. The at least one capacitor is connected to an output port of the at least one voltage regulator and a power source input port of the power source consumer. The controller turns off the at least one voltage regulator during a deactivation period of the communication apparatus and turns on the at least one voltage regulator during an activation period of the communication apparatus.

Apparatus and method for controlling transmission and reception operations in wireless communication system

An apparatus and a method for raising an output efficiency in a mobile communication terminal are provided. The apparatus includes a supply modulator and a power amplifier. The supply modulator includes a DC-DC converter, a voltage regulator, and a switching regulator. The supply modulator modulates an envelope component of an input signal to generate power. The power amplifier amplifies a phase component of the input signal using the power generated by the supply modulator as a power source of a collector/drain. The DC-DC converter raises battery power of the mobile communication terminal. The voltage regulator determines an output voltage of the supply modulator using the power raised by the DC-DC converter. The switching regulator determines an output current of the supply regulator using the battery power of the mobile communication terminal.

Device and method for increasing output efficiency of mobile communication terminal

An apparatus for amplifying power is provided. The apparatus includes a supply modulator for generating a supply voltage based on an amplitude component of a transmission signal, and a power amplify module for amplifying power of the transmission signal using the supply voltage, wherein the power amplify module includes a first power amplifier and a second power amplifier, and when an output power of the transmission signal is greater than a reference power, the first power amplifier amplifies the power of the transmission signal using the supply voltage, and when the output power of the transmission signal is equal to or less than the reference power, the second power amplifier amplifies the power of the transmission signal using the supply voltage.

Apparatus and method for expanding operation region of power amplifier

An apparatus and a method for recognizing an electric over-stress of a hybrid supply modulator including a linear regulator and an Switching Mode Power Supplier (SMPS), and protecting a network from the electric over-stress are provided. The hybrid supply modulator includes at least one sensing unit and at least one actuator unit. The at least one sensing unit senses at least one of a current and a voltage at one or more points defined in advance within a supply modulator network. The at least one actuator unit performs a protection action corresponding to at least one electric over-stress situation represented by the sensing result.

Apparatus and method for protecting supply modulator

An apparatus and a method for expanding an operation region in an envelope tracking power amplifier are provided. The apparatus for amplifying power of a transmission signal includes an amplitude component determination unit, a supply modulator, and a power amplify module. The amplitude component determination unit determines an amplitude component of a transmission signal. The supply modulator generates a supply voltage to be provided to the power amplify module depending on the amplitude component of the transmission signal determined by the amplitude component determination unit. The power amplify module amplifies power of the transmission signal depending on the supply voltage generated by the supply modulator.

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Suwon-si, South Korea

Bok-Ju Park