@conference{Janpugdee2020,

title = {UTD Ray Analysis of Compact Range Gigabit Wireless Access System},

author = {P Janpugdee and T Tomura and J Hirokawa},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85095573358&doi=10.1109%2fICCEM47450.2020.9219455&partnerID=40&md5=69c21cd021f6ce5bc4a7aa60c380fd23},

doi = {10.1109/ICCEM47450.2020.9219455},

isbn = {9781728168234},

year  = {2020},

date = {2020-01-01},

journal = {Proceedings of the 2020 IEEE International Conference on Computational Electromagnetics, ICCEM 2020},

pages = {50-51},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {A uniform geometrical theory of diffraction (UTD) ray analysis of a 60-GHz compact-range Gigabit wireless access system in the presence of the platform and human body is presented in this paper. The field radiated by a large array antenna, which is the source of the system, is represented by a collective UTD solution consisting of just a few rays emanating from specific points in the interior and on the array aperture boundary. These UTD rays can be interpreted as the Floquet waves and their diffractions at the edges and corners of the array boundary. They are traced to interact with the platform and human body based on the UTD method for predicting scattering effects. Numerical results are presented to show the efficacy of the present UTD approach for analyzing the system. © 2020 IEEE.},

note = {cited By 0; Conference of 6th IEEE International Conference on Computational Electromagnetics, ICCEM 2020 ; Conference Date: 24 August 2020 Through 26 August 2020; Conference Code:164010},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Watcharasatienpan2019,

title = {A UHF Broadband Low-Noise Amplifier for Active Digital TV Antenna},

author = {I Watcharasatienpan and P Janpugdee},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85071514296&doi=10.1109%2fITC-CSCC.2019.8793457&partnerID=40&md5=531d9830126e8bb493db907e6eabf90a},

doi = {10.1109/ITC-CSCC.2019.8793457},

isbn = {9781728132716},

year  = {2019},

date = {2019-01-01},

journal = {34th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2019},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {A broadband low-noise amplifier has been developed for an active digital TV antenna to operate in the frequency range of 470 - 800 MHz in the UHF band. The amplifier employs a SiGe:C Heterojunction Bipolar Transistor (HBT) and uses shunt negative feedback to achieve relatively flat gain and low return loss over a broad bandwidth. The amplifier prototype is fabricated on the 0.4-mm FR4 substrate. The measured results show that the gain of about 24 dB, the input return loss of better than 11 dB, and the noise figure of less than 1.4 dB are achieved throughout the desired frequency band. © 2019 IEEE.},

note = {cited By 0; Conference of 34th International Technical Conference on Circuits/Systems, Computers and Communications, ITC-CSCC 2019 ; Conference Date: 23 June 2019 Through 26 June 2019; Conference Code:150802},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Thaeppunkulngam2019,

title = {Miniaturized Hybrid Couplers Using Quarter- Wave-Like Transformers},

author = {S Thaeppunkulngam and P Janpugdee and D Torrungrueng},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85062777627&partnerID=40&md5=697577548ccefcf5c9f510045eec0eee},

isbn = {9788957083048},

year  = {2019},

date = {2019-01-01},

journal = {ISAP 2018 - 2018 International Symposium on Antennas and Propagation},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {This paper presents the miniaturization of a hybrid coupler for microwave frequency. The size reduction is achieved by the use of quarter-wave-like transformers (QWLTs) implemented by properly designed conjugately characteristic-impedance transmission lines (CCITLs). The QWLT has a shorter physical length than the conventional quarter-wave transformer (QWT) for matching the same impedance. The 25% size reduction has been achieved for the present hybrid coupler without significant performance degradation. The miniaturization of a hybrid coupler can consequently reduce the size of the circuit composing it, and thus possibly decreasing the manufacturing cost. © 2018 KIEES.},

note = {cited By 0; Conference of 2018 International Symposium on Antennas and Propagation, ISAP 2018 ; Conference Date: 23 October 2018 Through 26 October 2018; Conference Code:144610},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Pratumsiri2018,

title = {Flexible Printed Active Antenna for Digital Television Reception},

author = {T Pratumsiri and P Janpugdee},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85060936020&doi=10.23919%2fPIERS.2018.8597669&partnerID=40&md5=edc76c54b759a0ba859a6b13804e79cd},

doi = {10.23919/PIERS.2018.8597669},

issn = {15599450},

year  = {2018},

date = {2018-01-01},

journal = {Progress in Electromagnetics Research Symposium},

volume = {2018-August},

pages = {1538-1541},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {This paper presents the development of a flexible printed active antenna for the digital television (DTV) reception in areas having poor signal or in high-rise buildings. The antenna structure is composed of a meander line printed on a polyimide film as a radiating element. It has a thickness of 0.3 mm, highly flexible, and very lightweight. The design and analysis of the radiating element are based on a full-wave method implemented by a commercial electromagnetic simulation software. The amplifier circuit consisting of a surface-mount transistor and passive components are integrated directly on the polyimide film, residing next to the feedline, to improve the antenna performance and minimize the whole antenna dimension. The impedance matching between the radiating element, the feed line, and the active circuit are considered. The measured results show that the return loss of more than approximately 10 dB, the maximum gain of about 18 dB, and the Omni-directional radiation pattern are achieved in the operating frequency band of 510-790 MHz. Due to its flexibility, low profile, lightweight, and additional gain, the proposed antenna could be useful for various specific applications. © 2018 The Institute of Electronics, Information and Communication Engineers (IEICE).},

note = {cited By 1; Conference of 2018 Progress In Electromagnetics Research Symposium, PIERS-Toyama 2018 ; Conference Date: 1 August 2018 Through 4 August 2018; Conference Code:143984},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Pratumsiri2017,

title = {Flexible printed antenna for digital TV reception},

author = {T Pratumsiri and P Janpugdee},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046362125&doi=10.1109%2fISANP.2017.8228926&partnerID=40&md5=8d2b1cbb4bb504792b8bd731ab8e4fc2},

doi = {10.1109/ISANP.2017.8228926},

isbn = {9781538604656},

year  = {2017},

date = {2017-01-01},

journal = {2017 International Symposium on Antennas and Propagation, ISAP 2017},

volume = {2017-January},

pages = {1-2},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {A flexible printed antenna has been developed for digital television (DTV) reception. The antenna is a meander line printed on a polyimide film. It is extremely thin, flexible, compact, and very light weighted. The antenna is designed to operate in the UHF band with a relatively broad bandwidth covering the DTV broadcast frequency in Thailand. Due to its thinness and flexibility, the antenna is suitable for being integrated in a television set, conformally mounted on a wall or window, laminated within a glass window, etc. A prototype antenna has been built and tested. Measurement results are shown in this paper. © 2017 IEEE.},

note = {cited By 3; Conference of 2017 International Symposium on Antennas and Propagation, ISAP 2017 ; Conference Date: 30 October 2017 Through 2 November 2017; Conference Code:133994},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Janpugdee2017,

title = {A collective UTD ray solution for the radiation from conformal linear antenna arrays on a large cylinder},

author = {P Janpugdee and P H Pathak},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046338534&doi=10.1109%2fISANP.2017.8229034&partnerID=40&md5=33c4aede39ee8b0d733dee8c1dd1eb3f},

doi = {10.1109/ISANP.2017.8229034},

isbn = {9781538604656},

year  = {2017},

date = {2017-01-01},

journal = {2017 International Symposium on Antennas and Propagation, ISAP 2017},

volume = {2017-January},

pages = {1-2},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {A uniform geometrical theory of diffraction (UTD) ray solution has been developed for describing the radiation fields produced by a linear antenna array which is conformal to a cylindrical conducting structure. The fields are described collectively in terms of just a few rays which are launched from a specific critical point in the interior and from the two end points of the linear array. Numerical results are presented to demonstrate the validity and efficiency of the present collective UTD ray solution. © 2017 IEEE.},

note = {cited By 0; Conference of 2017 International Symposium on Antennas and Propagation, ISAP 2017 ; Conference Date: 30 October 2017 Through 2 November 2017; Conference Code:133994},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Korananan2017,

title = {Miniaturization of power dividers using quarter-wave-like transformers (QWLTs)},

author = {S Korananan and P Janpugdee and D Torrungrueng},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046426252&doi=10.1109%2fISANP.2017.8228878&partnerID=40&md5=dbf3a72e0d7ee4c8f530d7ed33a3efe2},

doi = {10.1109/ISANP.2017.8228878},

isbn = {9781538604656},

year  = {2017},

date = {2017-01-01},

journal = {2017 International Symposium on Antennas and Propagation, ISAP 2017},

volume = {2017-January},

pages = {1-2},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {This paper presents the miniaturization of a three-port power divider for microwave frequency. The size reduction is achieved by the use of a quarter-wave-like transformer (QWLT) implemented by a properly designed conjugately characteristic-impedance transmission line (CCITL). The QWLT has a significantly shorter physical length than the conventional quarter-wave transformer (QWT). A novel condition for the isolation impedance has been derived and presented in this paper. The size reduction of the power divider can consequently reduce the whole dimension of the circuit composing the divider with insignificant performance degradation, and thus decreasing the manufacturing cost. © 2017 IEEE.},

note = {cited By 0; Conference of 2017 International Symposium on Antennas and Propagation, ISAP 2017 ; Conference Date: 30 October 2017 Through 2 November 2017; Conference Code:133994},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Limsawan2017,

title = {Analysis of cancerous tissue temperature in the breast during hyperthermia},

author = {K Limsawan and P Janpugdee and F C Kunter},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85046402196&doi=10.1109%2fISANP.2017.8228868&partnerID=40&md5=50392cdda88703c4d6b96110a4fb7a8d},

doi = {10.1109/ISANP.2017.8228868},

isbn = {9781538604656},

year  = {2017},

date = {2017-01-01},

journal = {2017 International Symposium on Antennas and Propagation, ISAP 2017},

volume = {2017-January},

pages = {1-2},

publisher = {Institute of Electrical and Electronics Engineers Inc.},

abstract = {In this paper, the computational modeling of the 2D human breast in hyperthermia treatment at 2.45 GHz is studied. The mathematical tool used in this study for investigating the distribution of generated heat is the COMSOL software where the breast is modeled by Pennes' bioheat equation. The model simulation is conducted to investigate the effects of exposure time and power inputs on the cancerous tissue temperature field. The results show that this method can cure the breast cancer patient without damaging the breast tissue. © 2017 IEEE.},

note = {cited By 0; Conference of 2017 International Symposium on Antennas and Propagation, ISAP 2017 ; Conference Date: 30 October 2017 Through 2 November 2017; Conference Code:133994},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}

@conference{Tingsuwatit2017,

title = {An analysis of maritime communications between a ship at sea and a shore station by a ray-based Monte Carlo method},

author = {A Tingsuwatit and P Janpugdee},

editor = {He S Chew W.C. He S.},

url = {https://www.scopus.com/inward/record.uri?eid=2-s2.0-85044926290&doi=10.1109%2fPIERS.2017.8262359&partnerID=40&md5=fa1ef5071c61e47bb4b052437f780448},

doi = {10.1109/PIERS.2017.8262359},

issn = {15599450},

year  = {2017},

date = {2017-01-01},

journal = {Progress in Electromagnetics Research Symposium},

pages = {3462-3466},

publisher = {Electromagnetics Academy},

abstract = {In this paper, an analysis of maritime communications between a ship at sea and a shore station using a ray-based Monte Carlo method has been proposed. A sea surface is modeled by the one-side Pierson-Moskowitz spectrum. A Monte Carlo method based on a ray tracing is employed to predict the scattering from the temporally evolving rough sea surface for each time step. The maximum of double reflections is restricted in the ray tracing for a practical purpose. The total received signal is the superposition of the direct propagating field and the scattered field by the sea surface. The statistical numerical result is finally obtained by averaging the results from many realizations. Numerical results for the link performance evaluation obtained by the proposed method are illustrated. The results show that the misalignment of transmitting and receiving antennas due to the rolling ship has relatively less impact on the communication link performance than the multipath fading due to the scattering by the temporally evolving rough sea surface. © 2018 Electromagnetics Academy. All rights reserved.},

note = {cited By 3; Conference of 2017 Progress In Electromagnetics Research Symposium - Spring, PIERS 2017 ; Conference Date: 22 May 2017 Through 25 May 2017; Conference Code:134321},

keywords = {},

pubstate = {published},

tppubtype = {conference}

}