Kittisak Phaebua

King Mongkut's University of Technology North Bangkok

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Co-Authors

Titipong Lertwiriyaprapa

King Mongkut's University of Technology North Bangkok

Danai Torrungrueng

King Mongkut's University of Technology North Bangkok

Chuwong Phongcharoenpanich

King Mongkut's Institute of Technology Ladkrabang

Sangwon Kittiwittayapong

King Mongkut's University of Technology North Bangkok

Akkarat Boonpoonga

King Mongkut's University of Technology North Bangkok

Prayoot Akkaraekthalin

King Mongkut's University of Technology North Bangkok

Monai Krairiksh

King Mongkut's Institute of Technology Ladkrabang

Kitiphon Sukpreecha

King Mongkut's University of Technology North Bangkok

Prabhakar H. Pathak

The Ohio State University

Suramate Chalermwisutkul

King Mongkut's University of Technology North Bangkok

Cooperative Institutions

Kagoshima University

King Mongkut's University of Technology North Bangkok

King Mongkut's Institute of Technology Ladkrabang

The Ohio State University

National Science and Technology Development Agency

King Mongkut's University of Technology Thonburi

ORCID

Rajamangala University of Technology Isan

National Electronics and Computer Technology Center

Thailand National Metal and Materials Technology Center

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Development of Low-cost Radio Frequency (RF) Laboratory for Microwave Filter and Antenna Course

May sandar Moe Kittisak Phaebua Titipong Lertwiriyaprapa

This research aims to develop the low-cost radio frequency (RF) laboratory for microwave filters and antennas laboratory for the microwave engineering course in Technological University TU (DAWEI) Myanmar. The research includes two main parts: Firstly, the hardware and software system of the proposed magnitude RF network analyzer. Secondly, the hardware and software system of the antenna radiation pattern measurement equipment is proposed. The low-cost equipment such as the RF transmitter (Tx) using voltage control oscillate (VCO), receiver (Rx) using RF power detector and the turntable using low-cost motor are employed. The control unit, display unit and the graphic user interface (GUI) using MATLAB together with the Arduino controller are employed. The proposed low-cost RF measurement equipment was evaluated by 3 experts. Moreover, the student testing groups consisted of 3 groups with 3 students in each group. The results showed that the average score of students is 4.8 points (total of 5 points). As a result, it can be conducted that the proposed system can be used effectively and provide students with the knowledge and practical skills.

Radio-frequency engineering

Radio transmitter design

10.23919/sice48898.2020.9240326

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Application of UTD ray solution for characterization of propagation in Thai commercial orchard

International Conference on Electromagnetics in Advanced Applications (2010)

Titipong Lertwiriyaprapa Kittisak Phaebua Chuwong Phongcharoenpanich Monai Krairiksh

The radio wave propagation model is theoretically proposed in this paper, by using the uniform geometrical theory of diffraction (UTD) together with the Gaussian beam (GB) via the complex source point (CSP) technique. The path loss and multipath propagation are predicted in a Thai commercial orchard. The durian orchard is primarily chosen to be an example for this study but the radio wave propagation model obtained in this work can be applied to any commercial orchard with slightly changing the scenarios in the orchard. To improve the source in the durian orchard modeling to be more practical, the GB expansion via the CSP technique is applied. In this work, one combines the UTD and CSP to deal with the path loss analysis in the durian orchard. This leads to the 3D propagation model of the durian orchard. This study will be very useful for designing the wireless sensor network (WSN) in any Thai commercial orchard.

Orchard

10.1109/iceaa.2010.5652987

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Design and Experimentation of CP Sequential-Rotated Patch Antenna for Nanosatellite Technology

Nathapat Supreeyatitikul Kittisak Phaebua Chuwong Phongcharoenpanich Jessada Konpang

Patch antenna

10.1109/ecti-con60892.2024.10594945

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A Ray Technique for Modeling the Radiation by Realistic Small Antennas on Locally Convex Large Complex Platforms

Prabhakar H. Pathak Robert J. Burkholder Kittisak Phaebua

10.23919/inc-usnc-ursi61303.2024.10632279

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A Study of an X-band FMCW Radar for Small Object Detection

Tripop Tongboonsong Akkarat Boonpoonga Kittisak Phaebua Titipong Lertwiriyaprapa Lakkhana Bannawat

This paper presents the design of the low-cost x-band frequency modulated continuous wave (FMCW) radar for small object detection. The FMCW radar is implemented at the frequency range of 10 GHz (X-band). The horn antenna is designed to construct the array antenna with an antenna gain of 23 dBi. The radar targets are composed of a square wooden post, circular cross-section metal rod and square metal plate. The experiment will be conducted in an anechoic chamber. The experiment results of the three radar targets are illustrated. Also, the moving detection of a square metal plate will be performed. The result showed that the proposed system is efficiently employed to detect small objects.

Anechoic chamber

Radar cross-section

10.1109/ieecon51072.2021.9440348

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Design of Miniaturized Impedance Transformers Using Quarter-Wave-Like Transformers Implemented by Asymmetric Compact Microstrip Resonant Cells

Sangwon Kittiwittayapong Thanatcha Satitchantrakul Danai Torrungrueng Kittisak Phaebua Titipong Lertwiriyaprapa

This paper presents a design of miniaturized impedance transformers using quarter-wave-like transformers (QWLTs). The asymmetric compact microstrip resonant cell (CMRC) can be applied to effectively implement QWLTs, and is optimized based on its ABCD parameters to achieve a desired impedance transformation. It is found that the size reduction of approximately 52% can be achieved by using the optimized asymmetric CMRC, compared to that of the standard quarter-wave transformer (QWT), operating at 922.5 MHz with acceptable impedance bandwidth and return loss.

Quarter-wave impedance transformer

10.1109/ieecon51072.2021.9440254

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Citations (4)

Linen Laundry Management System in Hospital by Using UHF-RFID

Kiadtisak Salayong Kittisak Phaebua Titipong Lertwiriyaprapa Akkarat Boonpoonga Lalida Chaiyasang

This paper presents a linen laundry management system in a hospital by using UHF-RFID system. The hardware design, installation and software management of the proposed system will be illustrated. Conventionally, the antenna in a UHF-Tag for the linen laundry application has a linear polarization. The proposed circularly polarized (CP) reader antenna is designed to solve an arbitrary orientation problem of a laundry UHF-Tag. A RFID reading performance of single, two, three and four reader antennas of the RFID gate are investigated. Moreover, the proposed software for laundry management is developed for tracking and counting of a dirty and cleaned linen at the RFID gate. Linen loss, damaged linen data and washing life-cycle of the linen for store management will be collected.

Laundry

10.1109/ri2c48728.2019.8999948

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Novel Dual-Band Impedance Matching Circuits Implemented by Complementary Compact Microstrip Resonant Cells (CCMRCs)

2022 International Electrical Engineering Congress (iEECON) (2022)

Sangwon Kittiwittayapong Kittisak Phaebua Titipong Lertwiriyaprapa Danai Torrungrueng Prayoot Akkaraekthalin

This paper presents a novel dual-band impedance matching circuit (IMC) based on the quarter-wave-like transformer (QWLT), which can be effectively implemented by complementary compact microstrip resonant cells (CCMRCs). In this study, the dual-band IMC is designed at 3.3 GHz and 4.4 GHz for 5G technology applications in Thailand. In this study, a QWLT implemented by an asymmetric CCMRC can be systematically designed using the ABCD parameters of the CCMRC by solving associated equations of impedance matching simultaneously at both frequencies of interest. It is found that the asymmetric CCMRC can provide the length reduction of 14.8 % with excellent impedance matching at both frequencies of interest, compared to that of the symmetric case.

Quarter-wave impedance transformer

Multi-band device

10.1109/ieecon53204.2022.9741691

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Citations (1)

Low-cost Automatic Antenna Polarization Measurement system

Natdanai Phumirin Kitiphon Sukpreecha Kittisak Phaebua Akkarat Boonpoonga Titipong Lertwiriyaprapa

This paper presents low-cost automatic antenna polarization measurement system. The portable vector network analyzer (VNA) namely nanoVNA is employed instead of an expensive high-precision laboratory VNA. NanoVNA supports frequency range of 50 kHz to 1.5 GHz that provide a good capability to measure an electrical characteristics of antennas, filters, duplexers, amplifiers and etc. The wide-band Vivaldi antenna is employed as the measurement electric field probe which is supported by the rotating shaft and drive by stepping motor. MALAB GUI post-processing is implemented to automatically control the stepping motor and NanoVNA. The orthogonal components of probe amplitudes and phases of antenna under test (AUT) are measured by NanoVNA. The axial-ratio value of AUT polarization can be obtained by MALAB post processing. Therefore, the proposed low-cost automatic antenna polarization measurement system is well suited to understand antenna polarization with hands-on experience.

10.1109/ri2c56397.2022.9910296

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Short-distance and near-ground signal measurements in a car park of wireless sensor network system at 433 MHz

Kittisak Phaebua Chuwong Phongcharoenpanich Danai Torrungrueng Jatuporn Chinrungrueng

The short-range and near ground measurements of signal attenuation in the UHF band are performed to study radio wave propagation in a car park for a wireless sensor network application. The measurement setup is based on the radio wave propagation along the row of a parking lot (full of cars) by varying heights of server antenna. In the application, a small antenna and a compact antenna are employed at the server antenna and the sensor antenna respectively, by radiating horizontal polarization. The test points are located under cars and above ground. The transmitter is radiated at 433 MHz with 120 cm, 180 cm and 240 cm of antenna height. The propagation models, such as the two-ray model and the free-space model, are compared with measurement results. These results can be used to approximate the signal level in practical planning of wireless sensor network systems in car parks.

Antenna height considerations

Antenna rotator

10.1109/ecticon.2008.4600417

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Citations (13)