AMPLIFICATION DEVICE AND METHOD OF CONTROLLING AMPLIFICATION DEVICE

• Main Authors: KIRIKOSHI YU, SUGIMOTO ATSUO, YUNOGAMI NORIHIRO
• Format: Patent
• Language: English; Japanese
• Published: 27.11.2014
• Subjects: AMPLIFIERS; BASIC ELECTRONIC CIRCUITRY; ELECTRICITY

PROBLEM TO BE SOLVED: To keep the power consumption of an amplifier within a predetermined range.SOLUTION: A control section 11 calculates a heating value of an amplifier 4 based on a difference between a temperature detected by a first temperature detection circuit 8 and a temperature detected by a second temperature detection circuit 9 and on a thermal resistance of a member between the first temperature detection circuit 8 and the second temperature detection circuit 9. The control section 11 calculates a power consumption of the amplifier 4 on the basis of the heating value and an output power of the amplifier 4 detected by an output power detection circuit 10, and if the power consumption exceeds a predetermined range, controls a bias circuit 5 to adjust a bias applied to the amplifier 4. 【課題】増幅器の消費電力を予め定められた範囲内に収める。【解決手段】制御部１１は、第１温度検出回路８で検出された温度と第２温度検出回路９で検出された温度との差分、および第１温度検出回路８および第２温度検出回路９の間の部材の熱抵抗に基づき、増幅器４の発熱量を算出する。制御部１１は、発熱量および出力電力検出回路１０で検出された増幅器４の出力電力に基づき、増幅器４の消費電力を算出し、消費電力が予め定められた範囲を超えている場合には、バイアス回路５を制御して増幅器４に印加されるバイアスを調節する。【選択図】図１