One kind of star with Ku-band power amplifier

The present invention discloses a high reliability with a Ku-band satellite power amplifier, a microwave amplifier, a bandpass filter, a modulation power supply circuit, the second harmonic suppression circuit. The microwave power amplifier comprising a monolithic amplifier circuit, a filter, a power transistor, the second harmonic suppression circuit is constituted by low impedance line, the driving circuit and a modulation circuit composed of MOS tube. The present invention uses a modular design, thermal design and effective derating design, reliability verification test technology and high confidence, accelerated life test methods and reliability prediction technology, the Ku-band output power greater than 15W, Star GaAs 35dB gain greater than the solid-state amplifier.