For example: Agilent E4440A or Anritsu 68369

Amplifiers

RF Amplifiers

Manufacturers: Amplifier Research, Ophir, Instruments for Industry, Varian(CPI), Comtech, Hughes, Keysight / Agilent, ENI, Compower, Microwave Power Devices, APEX Technologies, Teseq (Schaffner), Stanford Research Systems, JDSU, TEGAM, Anritsu, Gigatronics, Eaton, Fluke, Lecroy, Yokogawa, Symmetricom, AE Techron, Mini-Circuits, Racal Instruments, Advantest, Associated Research, EIP Microwave, Centellax, Keithley Instruments