نوع مقاله : مقاله پژوهشی
نویسندگان
1 دانشگاه تربیت مدرس
2 دانشگاه صنایع معادن
چکیده
کلیدواژهها
عنوان مقاله [English]
نویسندگان [English]
In this Paper, Design of an Axial Mode 2×2 Tapered Dielectric- Loaded Helical
Antenna Array for INMARSAT-M Mobile Vehicles in the L Band are Presented. This
Designed Antenna Array is Smaller and Lighter than the Previous Ones. For Improving
the Array Performance, Special Attention has been Paid to Important Parameters such
as Gain, Side Lobe Level, Impedance Matching and Axial Ratio Bandwidth. To
Facilitate its Application in the Satellite Communication, a Tapered Cylindrical
Dielectric Resonator (DR) can be used to Enhance the Forward Tilt of the Total Electric
Field Launched from the Helix. This Array has a Gain of 15.1 dB, a Radiation Pattern
with a Side Lobe Level of -21dB and a 3-dB Axial Ratio Bandwidth is about 15%. By
Using these Methods Simultaneously, Designed Antenna has the Better Radiation
Parameters than the Prior Commercial Examples.
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