Thin film Barium Strontium Titanate (BaxSr1-xTiO3-henceforth BST) variable capacitor (varactor) tuning elements are key components for reconfigurable microwave circuits. This talk will introduce the thin film varactors and their demonstrated applications. The size, weight, and power (SWaP) savings using the chip scale tunable RF front end components is a game-changer for defense applications and key for the 5G/6G cellular communications. Co-sponsored by: Wright-Patt Multi-Intelligence Development Consortium (WPMDC), The DOD & DOE Communities Speaker(s): Guru Agenda: Thin film Barium Strontium Titanate (BaxSr1-xTiO3-henceforth BST) variable capacitor (varactor) tuning elements are key components for reconfigurable microwave circuits. This talk will introduce the thin film varactors and their demonstrated applications. The size, weight, and power (SWaP) savings using the chip scale tunable RF front end components is a game-changer for defense applications and key for the 5G/6G cellular communications. Virtual: https://events.vtools.ieee.org/m/446833