Title :
Performance of digital discrete-time implementations of non-Foster circuit elements
Author :
Weldon, Thomas P. ; Covington, John M. C. ; Smith, Kathryn L. ; Adams, Ryan S.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of North Carolina at Charlotte, Charlotte, NC, USA
Abstract :
There is renewed interest in the use of non-Foster circuit elements in a variety of important applications such as wideband impedance matching and artificial magnetic conductors. Although non-Foster devices such as negative capacitors and negative inductors can be realized using current conveyors and Linvill circuits, a digital design approach may offer an important alternative in some applications. Therefore, digital discrete-time implementations of non-Foster circuit elements are investigated, and simulation results are presented for the implementation of a discrete-time negative inductor and a discrete-time negative capacitor.
Keywords :
analogue-digital conversion; capacitors; current conveyors; digital-analogue conversion; inductors; logic design; Linvill circuits; artificial magnetic conductors; current conveyors; digital design; digital discrete-time implementations; discrete-time negative capacitor; discrete-time negative inductor; nonFoster circuit elements; nonFoster devices; wideband impedance matching; Antennas; Capacitors; Clocks; Impedance; Inductors; Probes; Simulation;
Conference_Titel :
Circuits and Systems (ISCAS), 2015 IEEE International Symposium on
Conference_Location :
Lisbon
DOI :
10.1109/ISCAS.2015.7169110