Fast doppler tracking DSP-based earth station modem for LEO satellite applications

2005 ◽  
Author(s):  
S. Kandeepan ◽  
S. Reisenfeld
Keyword(s):  
Earth Station ◽  
Satellite Applications ◽  
Doppler Tracking ◽  
Leo Satellite

Circularly polarized ferrite patch antenna for LEO satellite applications

2019 ◽  
Vol 12 (4) ◽  
pp. 332-338
Author(s):  
E. Arnaud ◽  
L. Huitema ◽  
R. Chantalat ◽  
A. Bellion ◽  
T. Monediere
Keyword(s):  
Patch Antenna ◽  
Axial Ratio ◽  
Azimuth Angle ◽  
Antenna Design ◽  
Circularly Polarized ◽  
Small Satellites ◽  
Ferrite Material ◽  
Satellite Applications ◽  
Leo Satellite ◽  
Isotropic Radiation

AbstractThis paper presents the capacity of an S band circularly polarized patch antenna using a ferrite material for low-earth orbiting satellites (2025–2100 MHz for TeleCommand) to obtain a semi-isotropic radiation pattern. Indeed, circularly polarized antennas are generally large and bulky which is often incompatible for spatial applications especially for small satellites. A new antenna design is proposed with the following maximum dimensions: a diameter of 80 mm and a height of 12 mm. The structure presents an axial ratio lower than 6 dB (according to requirements) and a realized gain higher than −6 dB over a 4% bandwidth at the limit of coverage i.e. 90° irrespective of the azimuth angle (φ).

scholarly journals Compact Isoflux X-Band Payload Telemetry Antenna With Simultaneous Dual Circular Polarization for LEO Satellite Applications

2020 ◽  
Vol 19 (10) ◽  
pp. 1679-1683
Author(s):  
Eric Arnaud ◽  
Jeremy Dugenet ◽  
Kevin Elis ◽  
Arnaud Girardot ◽  
Davy Guihard ◽  
...  
Keyword(s):  
Circular Polarization ◽  
X Band ◽  
Satellite Applications ◽  
Leo Satellite

Test Results from a LEO-Satellite-Based Assured Time and Location Solution

2016 ◽  
Author(s):  
David Lawrence ◽  
H. Stewart Cobb ◽  
Gregory Gutt ◽  
Fran�ois Tremblay ◽  
Pascal Laplante ◽  
...  
Keyword(s):  
Test Results ◽  
Leo Satellite
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