Title :
Low-profile mounting-tolerant folded-out annular slot antenna for VHF applications
Author :
Clavijo, S.A. ; Diaz, R.E. ; Caswell, Eric
Author_Institution :
Arizona State Univ., Tempe
Abstract :
The goal of this investigation is to obtain mount-independent low profile, tunable antenna operation over VHF and UHF with an omni-directional azimuth radiation pattern for both line-of-sight (LoS) and SATCOM functions thus replacing multiple antennas (including an 8 foot long whip) on current Marine Corps vehicles. The baseline form-factor was an annular slot antenna (ASA) 24" times24" times2.5" with the UHF antenna integrated into the center disk of the ASA. The VHF antenna was to be tunable across two bands of operation, 30 - 88 MHz and 136 - 174 MHz. Thus, at the low end of the band the antenna is extremely small electrically: lambda/14 in diameter and lambda/143 in depth.
Keywords :
UHF antennas; VHF antennas; antenna radiation patterns; loop antennas; satellite communication; slot antennas; Marine Corps vehicles; SATCOM; UHF antenna; VHF antenna; folded-out annular slot antenna; frequency 136 MHz to 174 MHz; frequency 30 MHz to 88 MHz; line-of-sight communication; low-profile mounting-tolerant slot antenna; omni-directional azimuth radiation pattern; tunable antenna operation; Apertures; Circuit simulation; Coaxial components; Electric resistance; Impedance; Inductors; Magnetic materials; Metamaterials; Slot antennas; UHF antennas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2007 IEEE
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4244-0877-1
Electronic_ISBN :
978-1-4244-0878-8
DOI :
10.1109/APS.2007.4395418
