OldRFguy
Junior Member level 1
I'm interested in designing a low noise amplifier extending from a few kHz to around 200MHz (maybe higher) and I'm trying to identify a really good bipolar device with OIP3 up around 40dBm or better and a NF in the region of of 2-3dB.
Clearly, CATV transistors are a good place to start but the advent of high linearity MMICs seems to be making quite a few of these devices obsolete so can anyone recommend suitable devices that are still in manufacture?
I'm also aware that there are quite a lot of RFIC gain blocks that look good for this role but most do not extend down low enough in frequency, or if they do then the noise figure is around 4-5dB.
Any suggestions that you can offer would be gratefully received.
Thanks
Clearly, CATV transistors are a good place to start but the advent of high linearity MMICs seems to be making quite a few of these devices obsolete so can anyone recommend suitable devices that are still in manufacture?
I'm also aware that there are quite a lot of RFIC gain blocks that look good for this role but most do not extend down low enough in frequency, or if they do then the noise figure is around 4-5dB.
Any suggestions that you can offer would be gratefully received.
Thanks