Cross Coupled Pair Part 1

/ edmundsj
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Here I go over the small-signal model of the cross-coupled pair (XCP) and we investigate its interesting property of negative input impedance.
Hope you found this video helpful, please post in the comments below anything I can do to improve future videos, or suggestions you have for future videos.

[@AJ-tr4jx]

MAN this video is really intuitive and helpful! i never realized that it can be viewed as negative resistance

[@JordanEdmundsEECS]

A J Thanks man :) all the credit goes to the genius that is Behzad Razavi, his papers are an excellent resource

[@AJ-tr4jx]

i am currently reading "RF microelectronics" by razavi. that book is really thick, so i kinda skip some section. i wonder if i skipped this one too...
do one about mixer next please :)... it's a lot faster to learn from your videos. really

[@mohammadhadimasoumi7418]

I really appreciate you for the work you are doing. That was very helpful for me. thanks

[@JordanEdmundsEECS]

Thank you :)

[@TrantorTechInsights]

Jordan i love you! You’re the best!

[@rajeshsahoo9398]

you are doing great..thank you.. Sharing knowledge is the good things., u are doing it for free, means it is great.. We need more like u in the world, so i will try to be one..

[@JordanEdmundsEECS]

Thank you:) Please do! :D we need more educators

[@ingussilins6330]

I use cross coupled mosfet circuit for regenerative receiver.

[@Simen1969]

Are some LC combinations better than others? I measured the F of my 145uH litz wire coil. It measured -400pF. Will this theoretically resonate better with a 400pF capacitor than with other C values?

[@Simen1969]

The positive R will "resonate" with a negative R of the same but negative ohm value = "RR resonance" ;)
What relationship does the voltage value have, to the specific negative ohmic value it "looks like" to the circuit? ; Is there some sort "voltage resonance"?

[@hugoribeiro8281]

Awsome explanation! Thanks a lot 😉👍

[@lilibalsam4776]

why did you took ix/vx when you calculated the equivalent resistance in the small signal model with ro?

[@li-cl5nj]

Thanks for sharing！

[@JordanEdmundsEECS]

Welcome! :)

[@IxIVVI]

THX!