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Why Measurement frequency is lower than Simulation frequency?

Why Measurement frequency is lower than Simulation frequency?

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#1 21686077 22 Feb 2023 14:19

Halley Halley

Anonymous

Post #1
21686077 22 Feb 2023 14:19

Hi RF Engineers,

I saw that measurement results of a few implementation of microstrip filters and antennas seem to be always lower than design results in resonant frequency. Please explain to me why it happens?
Is it similar on others materials?
Thank you all!
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#2 21686078 13 May 2023 14:49

Jenshawn Jenshawn

Anonymous

Post #2
21686078 13 May 2023 14:49

It's because the models don't take into account the parasitics and losses. Also, different materials have different loss rates, which can change the results of a measurement.
#3 21686079 21 Jun 2023 13:01

lindayin lindayin

Anonymous

Post #3
21686079 21 Jun 2023 13:01

Many factors will influence the frequency. Simulation frequency is only theoretical.
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