When output from a VNA is squarewave, a lowpass filter is needed to measure some amplifiers. Does anyone know where to get them. Like ones from Mini Circuits with SMA connector. But I think they are discontinued.
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Source of good low cost low power lowpass filters?
QRP_Labs has a family of LPF's - about $5 USD each. PC Board plus parts. No connectors, etc. Suggest you look. at them.
Bob Groh, WA2CKY
On 3/16/23 11:55 AM, Leif M wrote:
> When output from a VNA is squarewave, a lowpass filter is needed to
> measure some amplifiers. Does anyone know where to get them. Like ones
> from Mini Circuits with SMA connector. But I think they are discontinued.
MiniCircu has has plenty of LPF with SMA, both SLP and VLF series, for
MiniCircuits filters are not discontinued. More likely, their filter line is expanded. SMA, BNC, N connectors, surface mount, whatever. Go here:
Click the blue button for Low Pass, then check the boxes for Conn., 50, and Lumped LC. For SMA connectors you want the SLP series. I have no connection with MiniCircuits other than they have a wide variety of RF products of good quality and they're one of the first places I check when I need something. But I often buy through distributors like Mouser. No connection with them, either.
Nice. I'll checkl Qrp Labs and Mini Circuits
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