Phongcharoenpanich, Chuwong

Preferred name

Alternative Name

PHONGCHAROENPANICH, Chuwong

Phongcharoenpanich, C.

Main Affiliation

School of Engineering

chuwong.ph@kmitl.ac.th

Now showing 1 - 10 of 227

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Design 2.4/5.8 GHz microstrip-to-coplanar strip transition
(2007-12-01)
Meelarpkit, Kumron
;
Phongcharoenpanich, Chuwong
;
Krairiksh, Monai
;
Chongcheawchamnan, Mitchai
A 2.4/5.8 GHz microstrip (MS)-to-coplanar stripline (CFS) transition (industrial-scientific-medical bands) is presented in this paper. The transition can operate at two bands simultaneously with a stepped impedance transformer and stepped impedance open stub. The circuit is proven with a design on RF060 substrate. Simulated and experimental results of the transitions connected in back-to-back style are in good agreement. The back-to-back transition exhibits return and insertion losses, which are better than 15 dB and 3 dB, respectively.
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An equivalent circuit of a bidirectional antenna using a probe excited rectangular ring
(2004-01-01)
Lamultree, Suthasinee
;
Phongcharoenpanich, Chuwong
;
Kosulvit, Sompol
;
Krairiksh, Monai
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A unidirectional antenna using circular disc monopole excited circular ring above cylindrical reflector
(2008-12-01)
Vongsack, Souphanna
;
Phongcharoenpanich, Chuwong
;
Kosulvit, Sompol
;
Wakabayashi, Toshio
The objective of this paper is to propose a unidirectional antenna using circular disc monopole excited circular ring above cylindrical reflector to cover the frequency of 3.1-10.6 GHz for ultra-wideband (UWB) applications. The simulated results are presented ultra-wideband performance of this antenna by using Computer Simulation Technology (CST®). The simulated results verified that the proposed antenna radiates unidirectional pattern. Moreover, the antenna design is described in terms of return loss/impedance bandwidth and radiation pattern. The return loss of better than 10 dB covers the frequency range from 2.46 to 12.41 GHz. The proposed antenna has a unidirectional pattern with the gain of 9.98 dBi at 3 GHz, 11.56 dBi at 7 GHz and 11.59 dBi at 11 GHz from the simulated results. Moreover, the design of this antenna is simple. Therefore, proposed antenna is suitable for many applications in long and narrow path service cell. © 2008 IEEE.
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Broadband Two-Array Metasurface-Gridded MIMO Antenna with Dual-CP Bi-Directional Capabilities
(2025-01-01)
Supreeyatitikul, Nathapat
;
Kakhong, Khwanlada
;
Prasong, Pusit
;
Phongcharoenpanich, Chuwong
;
Konpang, Jessada
This study presents a novel two-array MTS-gridded MIMO antenna with dual circular polarization (CP) bidirectional capabilities for full-duplex communications. The proposed antenna consists of two mirrored clusters, each comprising a single-element antenna formed by a 3 × 4 MTS-gridded element array, a circular patch, and a ground plane. The antenna demonstrates a wide measured return loss bandwidth (RLBW) of 56.46% (5 - 8.67 GHz), axial ratio bandwidth (ARBW) of 18.15% (6.26 - 7.44 GHz), and strong isolation below -22 dB. Peak gains of 6.5 dBic and 6.55 dBic were observed at 6.6 GHz and 6.54 GHz for Ports 1 and 2, respectively. Furthermore, the low envelope correlation coefficient (< 0.005) and high diversity gain (> 9.985 dB) validate its effectiveness for multi-port applications. The bidirectional radiation pattern and dual circular polarization support simultaneous transmission and reception, making the design well-suited for full-duplex MIMO operation.
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Dual-band dual-pattern truncated-corners microstrip antenna for GPS and WiFi applications
(2015-04-22)
Chan-Arpas, Patthareeya
;
Dentri, Sitthichai
;
Phongcharoenpanich, Chuwong
This paper proposes a dual-frequency antenna for vehicles. The antenna structure consists of single patch and single feed. It is operated at the center frequency of GPS system at 1.575 GHz with circular polarization and 2.45 GHz for Wireless Local Area Networks (WLAN) with linear polarization. At 1.575 GHz, S<inf>11</inf>≤-10 dB can cover the frequency from 1.51 to 1.61 GHz. At 2.45 GHz, S<inf>11</inf>≤-10 dB can cover from 2.45 to 2.48 GHz, respectively. The axial ratio bandwidth (AR < 3 dB) is ranged from 1.56 to 1.59 GHz. The measured gains are 4.74 dBic and 2.08 dBi at center frequency, respectively. The half-power beamwidths (HPBW) in xz-and yz-planes are 85 and 85 degrees and the AR beamwidths in xz-and yz-planes are 180 and 200 degrees, respectively.
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Metasurface-based Circularly Polarized Dual-Port MIMO Antenna for C-band Uplink Applications
(2022-01-01)
Supreeyatitikul, Nathapat
;
Boonpoonga, Akkarat
;
Phongcharoenpanich, Chuwong
The rectangular-shaped metasurface (MTS)- based circularly polarized (CP) dual-port MIMO antenna was proposed. The proposed rectangular-shaped MTS-based CP dual-port MIMO antenna included two substrate layers (upper and lower). The periodic 4×4 rectangular-shaped MTS elements on the upper layer functioned as CP polarizers. Also, the lower substrate layer comprised the microstrip probe feed and ground plane which generated a linearly polarized (LP) wave. The proposed rectangular-shaped MTS-based CP dual-port MIMO antenna at 5.3 GHz achieved impedance bandwidth (IBW) of 30.9% (4.86 - 6.5 GHz) and axial ratio (ARBW) of 14% (5.16 - 5.9 GHz). The maximum gain was 7.3 dBi at 5.1 GHz. The ECC was lower than 0.002, and DG was greater than 9.98 dB between entire frequency ranges. The direction of the radiation was right-hand circular polarization (RHCP). The dimension of proposed rectangular-shaped MTS-based CP dual-port MIMO antenna was 1.342λ0 × 0.652λ0 × 0.0372λ0.
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Compact dual-band I-shaped patch antenna with longitudinal strip on inverted-T ground plane
(2014-01-01)
Chawanonphithak, Yuktitath
;
Phongcharoenpanich, Chuwong
This paper presents a compact dual-band I-shaped patch antenna with longitudinal strip on inverted-T ground plane for wireless local area network (WLAN) applications over the frequency band of 2.400-2.484 GHz and 5.150-5.350 GHz. The I-shaped patch antenna and inverted-T ground plane are etched onto a piece of printed circuit board (PCB) with an overall size of 40 mm × 60 mm × 1.6 mm. It is excited by strip line to match impedance with a 50 ω transmission line. The measured results show that the miniaturized antenna achieves a broad operating bandwidth of 2.26-2.89 GHz and 4.92-5.83 GHz for S<inf>11</inf><-10 dB and omnidirectional radiation pattern. The measured gains of the antenna at 2.4 GHz and 5.2 GHz frequencies are 1.90 dBi and 3.45 dBi, respectively. © 2014 IEEE.
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Electromagnetic wave scattering on 2D PEC cylinders using complex source point techniques and uniform geometrical theory of diffraction
(2010-07-30)
Lertwiriyaprapa, T.
;
Phaebua, K.
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Phongcharoenpanich, C.
;
Krairiksh, M.
An analysis of the path loss in the durian orchard is presented by using the complex source point technique (CSP) and the uniform geometrical theory of diffraction (UTD). The 2D Gaussian beams (GBs) expansion scattered by 2D cylindrical structures are presented. The GB can be generated by using the CSP. The GBs expansion can provides an efficient way of the synthesis of the radiation pattern of the antenna. The cylindrical structures are preliminarily assumed to be a perfect electric conductor (PEC). The source (square patch antenna) is located on a durian. The CST-program uses to simulate the source pattern including the effect of durian for the UTD calculation. The CSP-UTD is applied to analyze the scattered fields from the cylindrical structures. The multi-path propagation and the path loss prediction in various aspects are then obtained. Also, the exact solution of the CSP scattered by a cylindrical is used to compare the UTD results. The good agreements are obtained in this work.
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Effect of antenna frequency bands on the resolution of GPR images
(2017-12-19)
Yochanang, Kiattisak
;
Boonpoonga, Akkarat
;
Akkaraekthalin, Prayoot
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Bannawat, Lakkhana
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Phongcharoenpanich, Chuwong
This paper presents an investigation of the effect of the antenna frequency band on the ground penetrating radar (GPR) image resolution. The investigation is achieved through simulations. In the simulations, two Scutcheon antennas are modeled as the receiving and transmitting antennas. A cross-shaped object is buried under the ground constructed with the dielectric material. The Gaussian pulses with different frequency bands is transmitted and propagated to the buried object. The EM wave scattered from the object is collected to form the GPR image. The simulation results obtained from different frequency band show that the resolution of the GPR image obtained from the wider frequency band is better than that of the GPR image obtained from narrower one.
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Realization of switched-beam metamaterial-inspired microstrip antenna
(2017-04-19)
Kawdungta, Supakit
;
Phongcharoenpanich, Chuwong
This research has proposed the enhancement technique of the antenna gain by using a superstrate of metamaterial (MTM). It is deployed with a switchable beam microstrip antenna with double parasitic patches, in which two PIN diodes. Simulations and experimental were carried out for the proposed switchable beam microstrip antenna and the proposed antenna with the superstrate of MTM. The simulation and experimental results are in good agreement and it is a good impedance matching (S<inf>11</inf><-10dB) along the operating frequency (2.4-2.5 GHz). The average measured gain is 7dBi with the unidirectional radiation pattern along the operating frequency. The proposed switchable antennas with and without the superstrate of MTM are operable in the 2.4-2.5GHz WLAN system and switchable in three directions of xy-plane.

Phongcharoenpanich, Chuwong

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