Abstract
The objective of this study is the design and implementation of a Quadrifilar Helix Antenna (QHA) for telemetry, tracking and control of a Low Earth Orbit (LEO) satellite. Because of its cardioid-shaped circularly polarized beam, QHA can satisfy requirements of satellite communications completely. In this paper, a variation of QHA referred to as “self-phased QHA” with a single feeding circuit, has been proposed to reduce implementation complexity. The designed antenna has been analyzed and the experimental results show that the radiation pattern provides good wide-beam in the desired frequency while the antenna’s bandwidth is around 200MHz when VSWR is less than 2.
Highlights
Leila FarhoudiAbstract—The objective of this study is the design and implementation of a Quadrifilar Helix Antenna (QHA) for telemetry, tracking and control of a Low Earth Orbit (LEO) satellite
There are many applications for the Quadrifilar Helix Antenna (QHA), because of its cardioid-shaped circularly polarized beam [1], such as global positioning systems [2, 3], mobile handsets and terminals [4,5,6] and space applications [7, 8] such as satellite payloads [9]
In a Low Earth Orbit (LEO) satellite with attitude determination and control subsystem, TT&C antenna radiation should be from both sides of the satellite because in both nadir and anti-nadir pointing situation the communication link should be stable
Summary
Abstract—The objective of this study is the design and implementation of a Quadrifilar Helix Antenna (QHA) for telemetry, tracking and control of a Low Earth Orbit (LEO) satellite. Because of its cardioid-shaped circularly polarized beam, QHA can satisfy requirements of satellite communications completely. A variation of QHA referred to as “selfphased QHA” with a single feeding circuit, has been proposed to reduce implementation complexity. The designed antenna has been analyzed and the experimental results show that the radiation pattern provides good wide-beam in the desired frequency while the antenna’s bandwidth is around 200MHz when VSWR is less than 2
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