Title :
Cavity-backed slot antenna loaded with non-Foster negative inductors
Author :
Gregoire, D.J. ; Colburn, J.S. ; White, Carson R.
Author_Institution :
Appl. Electromagn. Lab., HRL Labs., LLC, Malibu, CA, USA
Abstract :
We have demonstrated a high-gain, shallow-cavity, low-frequency, cavity-backed slot antenna (CBSA) by loading its cavity with an active artificial magnetic conductor (AAMC) enabled with non-Foster negative inductors. The AAMC is mounted 1.27 cm below the cavity ceiling. The non-Foster circuit (NFC) allows the AMC resonant frequency to be tuned to as low as 200 MHz with ±90° bandwidth as high as 90%. As a result, the AMC enhances the CBSA´s gain by 15 dB when radiating in its fundamental mode at ~300 MHz.
Keywords :
UHF antennas; VHF antennas; slot antennas; AAMC; CBSA; NFC; UHF antennas; VHF antennas; active artificial magnetic conductor; cavity ceiling; cavity-backed slot antenna; frequency 200 MHz; frequency 300 GHz; nonFoster circuit; nonFoster negative inductors; Cavity resonators; Conductors; Gain; Inductors; Loaded antennas; Resonant frequency; Slot antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2013 IEEE
Conference_Location :
Orlando, FL
Print_ISBN :
978-1-4673-5315-1
DOI :
10.1109/APS.2013.6711762
