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Mixer Spur Calculator

Visualize real mixer spurs from datasheet tables or general model

Inputs

LO Frequency (MHz)^*

Local oscillator frequency (input or output depending on mode).

RF Frequency (MHz)^*

RF input frequency.

IF Frequency (MHz)

Calculated: |LO - RF|

LO Drive Level (dBm)

Power level of the LO signal.

Conversion Loss (dB)

Mixer's single-sideband conversion loss.

Max Spur Order

Highest m,n values to consider (higher = more spurs, slower calc).

Analysis Mode

Uses standard spur equations for any mixer.

Desired IF in green, spurs as vertical lines (hover for details).

Click rows for details. Sorted by frequency.

M	N	Frequency (MHz)	Power (dBc)	Type	In-Band?
Update inputs to see spurs...

For precise analysis using a specific mixer's datasheet spur table:

Find the spur table in your mixer's datasheet (e.g., LO/RF frequencies and corresponding spur levels).
Copy the table data into a JSON format (or use the upcoming upload feature).
Switch to Datasheet Mode and load it for accurate, model-specific spurs.

Example prompt for LLMs: "Convert this mixer datasheet spur table to JSON: [paste table here]"

Coming soon: Direct upload and parsing.

Inspired by the classic Hittite mixer spur calculator • Built for analogintuition.com