ferdem
Full Member level 2
Hi friends, I want to design a lowpass filter with lumped elements. I have no specs to meet, my goal is just study on lumped element filters. Operating range is DC to 1GHz.
I have tried for fcut=160 Mhz simulated in AWR(schematic only)
**broken link removed**
and made a quick layout:
**broken link removed**
then I realized it.
As you guess, network analyser measurments did not match with simulation results. Sharp edge between passband and stopband got smoother in real circuit and 3db cutoff frequency has shifted to 100 MHz(160MHz intended).
My questions:
1) Which one more suitable, wire wound inductors or chip inductors and what about their Q values?
2) How do you determine orientation of components and spaces between them, is it a good habit to place inductors perpendicular to trace?
3) Would you use an EM simulator for this design?
I'm aware of planar em simulators, are there simulators/tools modeling em behavior of lumped elements, which one do u recommend?
I have applied for Sonnet evaluation to use with AWR, is this a enough combination to simulate above design?
Thank you very much, sincerely.
I have tried for fcut=160 Mhz simulated in AWR(schematic only)
**broken link removed**
and made a quick layout:
**broken link removed**
then I realized it.
As you guess, network analyser measurments did not match with simulation results. Sharp edge between passband and stopband got smoother in real circuit and 3db cutoff frequency has shifted to 100 MHz(160MHz intended).
My questions:
1) Which one more suitable, wire wound inductors or chip inductors and what about their Q values?
2) How do you determine orientation of components and spaces between them, is it a good habit to place inductors perpendicular to trace?
3) Would you use an EM simulator for this design?
I'm aware of planar em simulators, are there simulators/tools modeling em behavior of lumped elements, which one do u recommend?
I have applied for Sonnet evaluation to use with AWR, is this a enough combination to simulate above design?
Thank you very much, sincerely.