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All Journal Jurnal Simetris Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Jurnal Abdimas
Santoso, Ardhi Wicaksono
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Computer Science & IT Control & Systems Engineering Electrical & Electronics Engineering Energy Engineering Social Sciences

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Design of Direct Digital Synthesizer (DDS) Based on Field Programmable Gate Array (FPGA) for Electrical Impedance Tomography (EIT) Rifai, Isnan Nur; Astuti, Wijayanti Dwi; Hendry, Jans; Santoso, Ardhi Wicaksono; Aji, Alief Purnomo
Jurnal Listrik, Instrumentasi, dan Elektronika Terapan Vol 6, No 1 (2025)
Publisher : Departemen Teknik Elektro dan Informatika Sekolah Vokasi UGM

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/juliet.v6i1.102579

Abstract

Direct Digital Synthesizer (DDS) systems play a critical role in high-precision signal generation for applications like medical imaging and RF communications. This research explores the development of a DDS system using Field-Programmable Gate Array (FPGA) technology, with a focus on optimizing signal accuracy, resource efficiency, and signal-to-noise ratio (SNR). The study implemented two DDS designs on an FPGA: one based on the CORDIC algorithm and the other using a Look-Up Table (LUT) approach. Key components of the system included a phase accumulator, phase register, and frequency calculation algorithms. The system's performance was evaluated by measuring signal output accuracy and SNR, utilizing the ISL6961IAZ DAC and RF Transformers PWB2010LC for signal conversion and transmission. The results showed that the DDS achieved near-target frequencies, with outputs of 100.4 kHz for a target of 100 kHz and 498.8 kHz for a target of 500 kHz. The LUT-based design demonstrated superior signal fidelity, achieving an SNR of 106 dB compared to 92 dB for the CORDIC-based design. However, resource utilization analysis revealed a trade-off between logic efficiency and memory usage: the CORDIC design consumed 26% of logic elements and only 1% of memory, while the LUT-based design used 8% of logic elements and 77% of memory. These findings highlight the importance of balancing design choices based on application-specific requirements for precision, resource constraints, and performance.
Impedance Meter Berbasis Field Programmable Gate Array (FPGA) Untuk Optimasi Respons Pengukuran Amplitudo Dan Beda Fasa Santoso, Ardhi Wicaksono; Rifai, Isnan Nur; Sumanto, Budi; Purnomo Aji, Alief
Simetris: Jurnal Teknik Mesin, Elektro dan Ilmu Komputer Vol 16, No 1 (2025): JURNAL SIMETRIS VOLUME 16 NO 1 TAHUN 2025
Publisher : Fakultas Teknik Universitas Muria Kudus

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24176/simet.v16i1.13278

Abstract

The Impedance Meter (IM) has become essential in exploring the electrical properties of materials, biological systems, and electrochemical processes. Measuring amplitude and phase difference is central to characterizing these materials and systems. This research aims to develop an amplitude and phase difference measurement system using Field-Programmable Gate Array (FPGA) technology with a cross-correlation method. Validation system is conducted by measuring the high pass response which consist of resistor and capacitor. Performance evaluation covers speed, accuracy, and system responsiveness to frequency variations. Based on the measurement and validation results, the following conclusions are drawn: The number of buffers in the data sampling process can impact accuracy and processing time. It takes 0.26 seconds for 100 phase difference measurements with a buffer count of 2000. Compared to mathematical analysis, amplitude measurements have an average error of 0.035 volts (3.5%) with a maximum error of 0.048 volts (4.8%). Phase difference measurements have an average error of 0.22° with a maximum error of 1.26°. While if compared to an oscilloscope, amplitude measurements show an average error of 0.002 volts (0.2%) with a maximum error of 0.012 volts (1.2%). Phase difference measurements show an average error of 0.18° with a maximum error of 0.86°. Mathematical analysis provides important theoretical understanding, while validation with an oscilloscope offers more accurate and realistic information under practical conditions, considering component non-idealities.
Empowering Vocational Educators in Kulon Progo: IoT and Digital Transformation Training for Enhanced Teaching Skills Fauziyyah, Anni Karimatul; Subardono, Alif; Rosyid, Nur Rohman; Adrian, Ronald; Oktiawati, Unan Yusmaniar; Putri, Tika Erna; Santoso, Ardhi Wicaksono; Saputra, Yuris Mulya
Jurnal Abdimas Vol. 28 No. 2 (2024): December 2024
Publisher : Universitas Negeri Semarang

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15294/yb0ejk04

Abstract

The IoT (Internet of Things) and Digital Transformation - Skill For All (SFA) training for vocational school teachers in Kulon Progo is an information technology training program. The SFA training addresses the skills gap by offering knowledge and skills necessary to work with IoT devices using IoT Kits from the Network Technology and Application lab, which is evolving in the digital transformation era. This training provides a solid foundation for managing IoT devices, which are highly relevant to today's industry needs. Configuring, managing, and programming IoT devices is essential in the digital age. By participating in this training, vocational school teachers in Kulon Progo can acquire practical skills directly applicable to their curriculum, helping students understand IoT concepts more deeply and practically. The IoT (Internet of Things) and Digital Transformation - Skill For All (SFA) training is designed to provide a comprehensive understanding of networking basics and how to configure and manage IoT Kits devices
Co-Authors Aji, Alief Purnomo Alif Subardono, Alif Astuti, Wijayanti Dwi Budi Sumanto Fauziyyah, Anni Karimatul HENDRY, JANS Oktiawati, Unan Yusmaniar Purnomo Aji, Alief Rifai, Isnan Nur Ronald Adrian, Ronald Rosyid, Nur Rohman Saputra, Yuris Mulya Tika Erna Putri