Comparison of non-Foster circuit augmentations of a near-field resonant parasitic antenna

Author

Roberts, Jeffrey S. ; Ziolkowski, Richard W.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Arizona, Tucson, AZ, USA

fYear

2014

fDate

2-5 Dec. 2014

Firstpage

51

Lastpage

52

Abstract

The impedance bandwidth of a metamaterial-inspired, electrically small Egyptian Axe Dipole (EAD) antenna is enhanced by augmenting it internally with a non-Foster circuit. Several different non-Foster implementations have been studied, including a variety of symmetric and asymmetric 2-BJT and 4-BJT based Linvill designs and operational amplifier-based design. The circuit and antenna performance characteristics have been obtained through ANSYS HFSS and Agilent ADS co-simulations. The design goal is a 15% or greater impedance bandwidth from an electrically small, stable, component tolerant, 300 MHz center frequency design.

Keywords

bipolar transistors; dipole antennas; metamaterial antennas; operational amplifiers; ANSYS HFSS; Agilent ADS cosimulation; BJT based Linvill design; EAD antenna; bipolar junction transistor; frequency 300 MHz; impedance bandwidth; metamaterial-inspired electrically small Egyptian axe dipole antenna; near-field resonant parasitic antenna; nonfoster circuit augmentation; operational amplifier-based design; Bandwidth; Dipole antennas; Impedance; Inductors; Resonant frequency; Wireless communication; Electrically small antennas; impedance bandwidth; metamaterials; non-Foster circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (ISAP), 2014 International Symposium on

Conference_Location

Kaohsiung

Type

conf

DOI

10.1109/ISANP.2014.7026525

Filename

7026525