Invention Application
- Patent Title: BIAS CONTROL CIRCUIT AND POWER AMPLIFICATION MODULE
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Application No.: US15871275Application Date: 2018-01-15
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Publication No.: US20180152151A1Publication Date: 2018-05-31
- Inventor: Yoshiaki HARASAWA , Fuminori MORISAWA
- Applicant: Murata Manufacturing Co., Ltd.
- Priority: JP2014-174260 20140828
- Main IPC: H03F1/30
- IPC: H03F1/30 ; H03F3/24

Abstract:
Provided is a bias control circuit that includes: a reference voltage circuit that generates a reference voltage; a resistor; a temperature dependent current generating circuit that generates a temperature dependent current, which changes depending on temperature, on the basis of the reference voltage and that supplies the temperature dependent current to one end of the resistor; a reference voltage buffer circuit that applies the reference voltage to the other end of the resistor; a constant current generating circuit that generates a constant current, which is for driving the reference voltage buffer circuit, on the basis of the reference voltage and that supplies the constant current to the other end of the resistor; and a bias generating circuit that generates a bias voltage or a bias current for a power amplification circuit on the basis of the voltage at the one end of the resistor.
Public/Granted literature
- US10396718B2 Bias control circuit and power amplification module Public/Granted day:2019-08-27
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