Title :
Airplane tail scatter analysis and tail notch calculation
Author :
Monk, Anthony D. ; Cai, Lixin ; Rasmussen, David N.
Author_Institution :
Boeing Co., Seattle
Abstract :
A UGTD analysis has provided predictions of the fields scattered by the vertical stabilizer of the tail of a commercial passenger transport airplane, when illuminated by a fuselage- mounted Ku-band satcom antenna. The predicted scattered fields allow the worst case increase in sidelobe levels relative to the regulatory off-axis mask to be determined, and used as a design metric. Analysis of typical test cases has shown that by applying a -15dB maximum tail illumination criterion, the sidelobe increase, relative to the regulatory off-axis mask, is acceptably constrained. Finally this design criterion allows the angular dimensions of a trapezoidal transmit-muting "tail notch" to be rapidly calculated, using knowledge only of the antenna patterns.
Keywords :
aircraft; microwave antennas; satellite antennas; Ku-band satcom antenna; UGTD analysis; airplane tail scatter analysis; antenna patterns; fuselage-mounted antenna; passenger transport airplane; tail illumination; tail notch; trapezoidal transmit-muting; vertical stabilizer; Airplanes; Azimuth; Geometry; Lighting; Pattern analysis; Satellites; Scattering; Tail; Transmitting antennas; Transponders;
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.2007.4396928