Circularly Polarized Proximity-Fed Microstrip Array Antenna for Micro Satellite
Abstract: Design of circular
polarization microstrip antenna array was developed to support micro-satellite
technology. Circular polarization antenna array used for data transmission
applications operating in the S band frequencies from the satellite to the ground
station. In this study of the patch array using proximity coupling techniques
in this study to obtain high gain and wide of bandwidth. The structure of the
antenna array design consists of four identical square patch elements and to
use the concept of corporate transmission line fed power divider network uses
three transformers quarter-lambda T-junction.
Bandwidth impedance matching for resonance between two patches is ¾ l
antenna system for center frequency of 2.25 GHz. The antenna is designed using the method of
moments through simulation with microwave office software applications. The
results of simulations and measurements obtained antenna parameters, such as:
bandwidth of return loss <-10 dB above 100 MHz resonant frequency shifted to
1.75%, VSWR (1 to 2), the bandwidth of axial ratio <3 dB is 1.6%
(narrowband) and the maximum directivity (gain) is 9.128 dB. Overall study
results showed good performance antenna array with circular polarization
properties, high gain and operates in the S band frequency micro satellite
system.
Author: Muhammad Darsono,
Endra Wijaya
Journal Code: jptkomputergg130113
