https://circuit.quest/categories/physical-design/ Recent content in Physical Design on Circuit Quest Hugo en-us Sun, 05 Apr 2026 00:00:00 +0530 https://circuit.quest/articles/antenna-diode/ Sun, 05 Apr 2026 00:00:00 +0530 https://circuit.quest/articles/antenna-diode/ An antenna diode is a protection diode placed in a digital IC to guard transistor gates against damage during the chip fabrication process. It has nothing to do with radio antennas. The name comes from the ‘antenna effect’, a phenomenon that occurs during plasma etching. Formally, this failure mode is called Plasma Induced Gate Oxide Damage.