HMC 751 LNA Testing

Question

Recently I have requested a sample of HMC 751 LNA with the complete evaluation board from Analog devices that operates from 17-27 GHz with a stable gain of 25 dB. Do i need any additional components to test it? Or I can measure it directly with the VNA to test? Do I need to use any additional attenuator to reduce the signal power? 
 I am looking forward to hearing your response. 
 Thanks, 
 Syed

DanO2 · Accepted Answer

Hi SSifat218, 
 I would recommend using a Keithley DC power supply (can be purchased through Tektronix or Test Equity). The most common model we use in the lab is the 2400 series, but they are pretty pricey (~$4000). So if you want a cheaper solution they have the PWS2000 series which is significantly cheaper (~$500). 
 
 Thanks, 
 
 DanO)

DanO2 · Answer

Hi SSifat218, 
 You should be fine just connecting the board to a VNA. As long as all of the capacitors/components are installed on the EVB (particularly the bypass caps). This part is internally AC coupled so there is no need for DC blocks or bias tees. You should not need additional attenuation measuring small signal of this part. 
 
 Thanks, 
 DanO

DanO2 · Answer

Hi SSifat218, 
 You should be fine just connecting the board to a VNA. As long as all of the capacitors/components are installed on the EVB (particularly the bypass caps). This part is internally AC coupled so there is no need for DC blocks or bias tees. You should not need additional attenuation measuring small signal of this part. 
 
 Thanks, 
 DanO

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HMC 751 LNA Testing