UHF Electrically Small Box Cage Loop Antenna With an Embedded Non-Foster Load

Author

Church, Justin ; Chieh, Jia-Chi Samuel ; Lu Xu ; Rockway, John D. ; Arceo, Diana

Author_Institution

SPAWAR Syst. Center Pacific, San Diego, CA, USA

Volume

13

fYear

2014

fDate

2014

Firstpage

1329

Lastpage

1332

Abstract

Traditional impedance-matching methods typically employ matching networks at the antenna input terminals. Alternatively, the antenna may be embedded with a non-Foster load to enhance the radiation bandwidth. This method is demonstrated here with the design of an electrically small box cage loop antenna (ka ~ 0.37). Simulated results using ideal non-Foster components are compared against a negative impedance converter (NIC) circuit realization. These results show that the VSWR bandwidth is improved 8 × by using the NIC circuit. Simulated radiation efficiencies are also presented for the first time.

Keywords

UHF antennas; impedance matching; loop antennas; negative impedance convertors; NIC; UHF electrically small box cage loop antenna; antenna input terminals; circuit realization; embedded nonFoster load; impedance matching; matching networks; negative impedance converter; nonFoster components; radiation bandwidth; radiation efficiency; Bandwidth; Capacitors; Impedance; Loaded antennas; Loading; Electrically small antennas (ESAs); loop antenna; negative impedance converter (NIC); non-Foster;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2014.2337112

Filename

6849941