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Author Topic: [solved, amplifier non-linearity issue] SAW filter performance at harmonics?  (Read 714 times)

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Offline szoftveresTopic starter

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[solved, amplifier non-linearity issue] SAW filter performance at harmonics?
« on: April 05, 2024, 05:26:36 pm »
I've been experimenting with this filter https://www.mouser.com/datasheet/2/3/AFS915_0w03_TS3-2950334.pdf
I have a comb generator and able to pick out the ~915MHz content. However I've been observing leak-through (-20dBc rel. to 915MHz) at 1.83GHz. The datasheet doesn't characterize the behavior beyond 1.4GHz hence I'm wondering if this is normal?
« Last Edit: April 06, 2024, 03:02:18 am by szoftveres »
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Online ch_scr

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Re: SAW filter performance at harmonics?
« Reply #1 on: April 05, 2024, 06:00:12 pm »
Just add a single wide LC filter to add the inteded characteristics. Horses for courses.
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Offline szoftveresTopic starter

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Re: [solved] SAW filter performance at harmonics?
« Reply #2 on: April 06, 2024, 02:36:59 am »
I have an amplifier right after this filter which I thought was linear at this power level - that's the culprit.
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