JETT (Jurnal Elektro dan Telekomunikasi Terapan)
Vol 7 No 1 (2020): JETT Juli 2020

ATURAN PEMODELAN KOMPUTASI UNTUK ELIMINASI SIGNAL SPEKTRUM-RF YANG TIDAK DIINGINKAN

Sirmayanti Sirmayanti (Unknown)



Article Info

Publish Date
30 Dec 2020

Abstract

One of the important mechanisms of the transmitter-receiver (Tx-Rx) digitization system through the RF upconverter is computation-based of the right solution to the harmonic problem. The cause of harmonics on the RF-spectrum in the RF upconverter architecture is the quantization process. Any change of frequency offsetting in the quantization rate causes interference so that an unwanted signal appears in the targeted signal. A number of harmonics appear also due to the rectangular nature during the pulse width / position modulation (PWM / PPM) process. To achieve the optimization of this unwanted signal elimination, it is necessary to have the right selectivity over sampling ratio (OSR) and precise techniques of using fc against the frequency clock (fclock). fclock is a determining factor for determining the number of points of quantization complexity because it is related to the representation of the phase level and amplitude of the signal. Therefore a computational rule is needed in predicting the size of the harmonic product and the harmonic elimination solution in this goal.

Copyrights © 2020






Journal Info

Abbrev

jett

Publisher

Subject

Computer Science & IT Electrical & Electronics Engineering Engineering

Description

JETT is a scientific journal published by Telkom University Bandung, Fully supported by Diploma of Telecommunication Engineering and became the scientific media for researchers and lecturers who will publish the results of their research. The aim of the Journal is to facilitate scientific ...