FDTD analysis of Apache helicopter HF antennas

Author

Andrew, W.V. ; Balanis, C.A.

Author_Institution

Telecommun. Res. Centre, Arizona State Univ., Tempe, AZ, USA

Volume

1

fYear

1995

fDate

18-23 June 1995

Firstpage

640

Abstract

The FDTD method with the Berenger perfectly matched layer (PML) absorbing boundary conditions (ADCs) is used to analyze the radiation characteristics of an HF antenna on a metallic airframe of the AH-64 Apache helicopter. The antenna of interest is an experimental 14\´ "towel bar" used in the 2-30 MHz band. A companion 24\´ HF antenna is mounted on the opposite side of the helicopter tail boom. The FDTD predictions compare well with experimental results from an operational Apache helicopter and with measured data obtained using an approximate 10:1 scale model of the Apache.

Keywords

aircraft communication; antenna radiation patterns; electromagnetic wave absorption; finite difference time-domain analysis; helicopters; military aircraft; military equipment; mobile antennas; 14 feet; 2 to 30 MHz; 24 feet; AH-64; Apache helicopter HF antennas; Berenger perfectly matched layer absorbing boundary conditions; FDTD method; MF; helicopter tail boom; metallic airframe; radiation characteristics; towel bar; Antenna measurements; Electrical resistance measurement; Feeds; Finite difference methods; Gain measurement; Hafnium; Helicopters; NASA; Resonance; Time domain analysis;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Society International Symposium, 1995. AP-S. Digest

Conference_Location

Newport Beach, CA, USA

Print_ISBN

0-7803-2719-5

Type

conf

DOI

10.1109/APS.1995.530100

Filename

530100