Browse Items (67 total)
- Collection: Vol. 18, No. 6 2020
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TELKOMNIKA Telecommunication, Computing, Electronics and Control
A beamforming comparative study of least mean square, genetic algorithm and grey wolf optimization algorithms for multipath smart antenna system
Multipath environment is a limitation fact in optimized usage of wireless networks. Using smart antenna and beamforming algorithms contributed to that subscribers get a higher-gain signal and better directivity as well as reduce the consumed power…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A miniaturized printed UWB antenna with dual notching for X-band and aeronautical radio navigation applications
A low cost miniaturized ultra-wideband (UWB) microstrip antenna with dual notched band for X band and aeronautical radio navigation (ARN) is presented in this article. The antenna (19×25 mm2 ) is composed of a half-circular ring as a radiation patch…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A modified Cuk DC-DC converter for DC microgrid systems
A new efficient step-up direct current- direct current (DC-DC) power
converter that is suitable for DC microgrid systems is proposed in this paper. The proposed step-up DC-DC converter is derived from the conventional Cuk DC-DC power converter.…
converter that is suitable for DC microgrid systems is proposed in this paper. The proposed step-up DC-DC converter is derived from the conventional Cuk DC-DC power converter.…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A new block cipher for image encryption based on multi chaotic systems
In this paper, a new algorithm for image encryption is proposed based on three chaotic systems which are Chen system, logistic map and two-dimensional (2D) Arnold cat map. First, a permutation scheme is applied to the image, and then shuffled image…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A new clustering technique based on replication for MANET routing protocols
The cluster head nodes in most mobile ad hoc networks (MANET) clustering protocols take on an extraordinary role in managing routing information. The reliability, efficiency and scalability of the clustering in MANET will ultimately be dramatically…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A novel two-polynomial criteria for higher-order systems stability boundaries detection and control
There are many methods for identifying the stability of complex dynamic
systems. Routh and Hurwitz’s criterion is one of the earliest and commonly used analytical tools analysing the stability of dynamic systems. However, it requires tedious and…
systems. Routh and Hurwitz’s criterion is one of the earliest and commonly used analytical tools analysing the stability of dynamic systems. However, it requires tedious and…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
A robust maximum power point tracking control for PV panel using adaptive PI controller based on fuzzy logic
Most methods of maximum power point tracking (MPPT) for photovoltaic (PV) focus only on tracking performance while robustness against disturbances has rarely been addressed. This paper proposes a new MPPT control method that provides robustness…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Acquiring higher lumen efficacy and color rendering index with green NaYF4:Er3+Yb3+ and red α-SrO·3B2O3:Sm2+ layers for designing remote phosphor LED
Lighting devices that apply diodes to create white light-emitting diodes
(WLEDs) can achieve remarkable results in color quality, especially those
containing quantum dots (QDs) and phosphor. The technique to create an appropriate package is…
(WLEDs) can achieve remarkable results in color quality, especially those
containing quantum dots (QDs) and phosphor. The technique to create an appropriate package is…
TELKOMNIKA Telecommunication, Computing, Electronics and Control
Adopted topic modeling for business process and software component conformity checking
Business processes and software components, especially class diagrams, have a firm connection. Considering software components support the business process in providing an excellent product and service. Besides, business process changes affect on…