Hi Jim,
"Jim Thompson" wrote in = message news: snipped-for-privacy@4ax.com...
increasing=20
flat=20
uH=20
Another possibility is a ferrite toroid inductor/choke. I made one awhile back with 14 turns on a 0.230" dia toroid, which had a low freq. mu of 125. It looked like a 4.2 uH inductor at low = freqs. It resonated at 145 MHz, and at 1 GHz it looked like 0.3 pF in parallel with 2k ohms. =20
You would need fewer turns and would get a higher resonant freq. I would think. And you still get to wind something. :)
If you are concerned about the rejection at 600 MHz of the low-pass branch, you'll have to minimize the inductance of your shunt capacitor.
--=20 Regards, Howard snipped-for-privacy@ix.netcom.com