Development of Low Pass Filter for STSAT-3 Communication Subsystem

Paper number

IAC-09.B2.5.3

Author

Mr. Jin-goog Kim, Korea Advanced Institute of Science and Technology (KAIST), Korea, Republic of

Year

2009

Abstract

A Science and Technology Satellite-3 (STSAT-3) is developed to verify the
performance of composite panel, Li-ion battery, and hall effect thruster. The
STSAT-3 is supposed to be launched on 2010 with infrared ray camera and
small image spectroscope. We cooperate with Satellite Technology Research
Center (SaTReC) of KAIST to develop the communication subsystem of STSAT-3
whichisoperatedonS-bandandX-bandfrequencies.S-band
transmitter/receiver and X-band receiver need low pass filter to eliminate
unnecessary high frequency band components. However, the conventional analog
low pass filter is vulnerable to the group delay and the amplitude distortion.
Thus, we focus on improving the performance of conventional analog low pass
filter using FPGA for digital signal processing. The digital signal processing unit
is consisted of analog to digital converter, digital signal processor, and digital to
analog converter. To develop the digital signal processing unit, we first obtain
the filter coefficient using Matlab. Then, analog to digital converter and digital
to analog converter are attached to the digital signal processor which is
designed with Xilinx chip. In order to ensure the functional independence of
each parts, we design them by module. Through experiments of the digital
signal processing unit, we know that the digital signal processing unit depends
on the performance of digital to analog converter and analog to digital
converter. As a result, In this paper, we show the procedure to design a digital
low pass filter which is applicable to the communication subsystem of STSAT-3
and test results.

Abstract document

IAC-09.B2.5.3.pdf

Manuscript document

IAC-09.B2.5.3.pdf (🔒 authorized access only).

To get the manuscript, please contact IAF Secretariat.