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US 2020/0052651 A1Published application
Power amplifier device with improved response speed
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJong Ok HA, Jeong Hoon KIM, Byeong Hak JO, Shinichi IIZUKA
Life of this patent
Estimating the term…
Abstract
A power amplifier device includes a bias circuit to generate a startup current, which is based on an internal voltage and a startup voltage, during a startup time prior to a steady driving time point, and to generate a bias current, which is based on the internal voltage, after the steady driving time point, and a startup circuit to supply the bias circuit with the startup voltage during the startup time.
Claims20
A power amplifier device comprising:
- a bias circuit configured to generate a startup current, which is based on an internal voltage and a startup voltage, during a startup time prior to a steady driving time point, and to generate a bias current, which is based on the internal voltage, after the steady driving time point;
- and
- a startup circuit configured to supply the bias circuit with the startup voltage during the startup time.
A power amplifier device comprising:
- a bias circuit configured to generate a startup current during a startup time prior to a steady driving time point, and to generate a bias current after the steady driving time point;
- a startup circuit configured to supply the bias circuit with a startup voltage during the startup time;
- and
- a power amplifier circuit configured to start up based on the startup current and to amplify an input signal based on the bias current.
1 more element
A bias circuit comprising:
- a voltage source circuit configured to output an internal voltage;
- and
- an output circuit configured to generate a startup current based on the internal voltage and a startup voltage during a startup time, and to generate a bias current based on the internal voltage after completion of the startup time.
Dependencies are inferred from the claim text.