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Upgrading PI controller into a current driver for a YIG

Hello ,I want to build a basic lock to my cavity resonator.
Why do I need this carrier supression?
Can I make it work basickly without doing the carrier supression?

original article and photo of schematics is attached.
Thanks.

 

image.thumb.png.1b2e61d778ea976539762c10e07c82f4.png

article.pdf

Edited by sergey23

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5 часов назад, sergey23 сказал:

Can I make it work basickly without doing the carrier supression?

Да, без дополнительного подавления несущей вы можете замкнуть петлю и проверить работу FLL. Прямо с выхода С циркулятора подайте сигнал на правый вход DBMixer. A1 , Ф1, LNA - исключите из схемы. Будет нелишним ограничить мощность с выхода усилителей после ЖИГ.

33 dBm это слишком много для такой цели, как у Вас, т.к можно сжечь даже DBMixer. Сделайте вместо 33  примерно 20 dBm 

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