The Piconics parts run in the microhenries and are high impedance to
10's of GHz. Minicircuits makes some cheaper wideband inductors and bias tees, too.We've stacked inductors, starting with tiny ones, then ferrite beads, then bigger axial parts. One typically adds resistors across the bigger ones to kill resonances.
John
=A0 =A0...Jim Thompson
=A0 =A0 ...Jim Thompson
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uoted text -
for a diplexer you don't need 1.2uH at 600MHz, you need 1.2uH at 10 MHz and some high enough impedance at 600 MHz. You are on the right track, a 1.2 uH in series with a smaller inductor seems like what you need, perhaps a cap to ground at the junction.
Mark
Awwwwh! I wanted to try winding my own conical ;-)
...Jim Thompson
--
| James E.Thompson, P.E. | mens |
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| Analog/Mixed-Signal ASIC's and Discrete Systems | manus |
| Phoenix, Arizona Voice:(480)460-2350 | |
| E-mail Address at Website Fax:(480)460-2142 | Brass Rat |
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kind of reminds me of the chokes we use at work on a machine to remove any possible resonance from the choke. multiple segmented so that we can achieve our inductance of interest with out a problem with SRF>
-- "I'd rather have a bottle in front of me than a frontal lobotomy" http://webpages.charter.net/jamie_5"
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