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Aug 13Liked by Vikram Sekar

Hi Vikram,

Thank you very much for your blog; it is truly educational. Could you please share your expertise on the two-tone test and the calibration methods used to maintain the linearity of power amplifiers within the dynamic range? Additionally, I would appreciate your insights on how third-order intermodulation distortion (IMD3) is interpreted in relation to nonlinearity. Also, any thoughts on methods to determine bias voltages that can be adjusted as a function of temperature?

Respectfully,

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Glad you like it Ola! Although I haven't explicitly written about 2-tone measurement methods, I've written one regarding nonlinearity and compression metrics and how to understand them. I hope it answers some of your questions.

https://www.viksnewsletter.com/p/understanding-compression-and-nonlinearity?r=222kot&utm_campaign=post&utm_medium=web

Temperature-independent biasing networks usually involve the design of bandgap circuits that can deliver very precise voltages. Is that what you're referring to?

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