(
2021-12-01)
Nath, Surajit Kumar; Goud, J. Pundareekam; Kongbrailatpam, Sandeep Sharma; Rajaram, Guruswamy; Raju, K. C.James
A ferroelectric metal insulator metal (MIM) varactor structure incorporating a floating metal and coplanar waveguide (CPW) has been introduced here. The work of the proposed varactor is based on the field-dependent material properties of (Ba, Sr) TiO3 (BST) thin film. A capacitance tunability of 44% has been achieved for the bias voltage of 0-10 V over a frequency range of 1-3 GHz. The proposed varactor structure yields a compact area, high capacitance density, and reduced mask process (two masks).