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1
Content available remote Design of a compact wideband circular monopole antenna for 5G applications
Lamultree Suthasinee, Jansri Chalee, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2021
|
R. 97, nr 4
9--12
EN
A circular monopole antenna incorporated with notched slots and modified partial ground plane for 5G applications is demonstrated in this paper. The proposed antenna is fed by a 50 Ω tapered microstrip line, and printed on a FR4 substrate material with relative permittivity of 4.3 and height of 1.6 mm. All suitable parameters have been accomplished to attain the 10 dB return loss bandwidth over 2-6 GHz.This antenna produces a stable omnidirectional pattern with minimum and maximum gains of 2.04 dBi and 4.67 dBi, respectively over the interested band. In addition, the proposed design was fabricated and the prototype was verified to have comparable S-parameters and radiation patterns with that of the simulated results. Evidently, simulated results are reasonably in excellent agreement with the experimental results.
PL
Przedstawiono promieniową antenę z wbudowaną szczeliną I zmodyfikowaną płytką do zastosowań w sieciach 5G. Antena jest drukowana na podłożu FR4 o wysokości 1.6 mm. Antena charakteryzuje się wielokierunkowością przy paśmie ponad 2.4 GHZ. Przedstawiono wyniki badania anteny.
2
Content available remote An ultra-wideband rectangular monopole with circular ring antenna for wireless communication applications
Lamultree Suthasinee, Thachantheuk Udomchok, Krasinhom Kobchai, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2021
|
R. 97, nr 1
8--11
EN
An investigation of an ultra-wideband rectangular monopole with circular ring antenna for wireless communication systems is reported. The antenna is designed, simulated, invented, and tested experimentally. It operates over frequency range of 2.56-13 GHz with a return loss of 10 dB. The dimensions of designed antenna is 40 mm × 40 mm with an electrical size of 0.34λ× 0.34λ at 2.56 GHz frequency. It is fed by a 50-Ohm coplanar waveguide and printed on a single side FR-4 substrate with a relative permittivity of 4.3 and a thickness of 1.6 mm. This designed antenna exhibits bidirectional radiation patterns over the entire impedance bandwidth with more than 2.8 dB peak gain for the entire frequency range. The simulation results are reasonably in good agreement with the experimental results.
PL
Przedstawiono szerokopasmową antenę z pierścieniem do bezprzewodowej komunikacji. Antena była zaprojektowana, był wtkonany jej model I przedstawiono wyniki testów. Antena pracuje w paśmie 2.56 – 13 GHz, ze stratami 10 dB. Wymiary anteny to 40 × 40 mm.
3
Content available remote Theoretical investigation of a parabolic reflector illuminated by a probe-fed rectangular waveguide with coupling apertures
Lamultree Suthasinee, Panthasa Rut, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2020
|
R. 96, nr 6
44--46
EN
In this study, a design of high gain reflector antenna for point to point communications is reported. A probe-fed waveguide aperture with four-stacked-coupling aperture is employed to be a primary illuminated parabolic reflector antenna. By varying distance between the primary and secondary antennas, its gain can be raised. An EM simulator has been used in the process. It is found that this proposed antenna provides an excellent symmetrical sharp beam with a low side lobe level as well as low cross-polarization. In addition, this proposed antenna produces a high gain of 26.9 dBi with S11 < -15 dB from 0.88fc to 1.06fc. All simulation results are reported and discussed in the paper.
PL
Przedstawiono projekt anteny z reflektorem o dużym wzmocnieniu do komunikacji point to point. Zastosowano falowód z czterema sprzężeniami oraz reflektor paraboliczny. Przez zmianę odległości między antenami wzmocnienie może się zmieniać. Ten problem rozwiązuje symulacja.
4
Content available remote Investigation of 3.1-10.6 GHz circular monopole antenna with modified partial ground plane
Lamultree Suthasinee, Jansri Chalee, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2020
|
R. 96, nr 4
49--52
EN
A circular monopole antenna with modified partial ground plane for ultra wideband (UWB) applications is investigated in this paper. The proposed antenna is fed by a 50 Ω tapered microstrip line, and printed on a FR4 substrate with relative permittivity of 4.3 and height of 1.6 mm. All optimal parameters have been achieved to accomplish S11 better than -10 dB with a nearly omnidirectional pattern and maximum gain of 3.83 dBi over 3.1-10.6 GHz. In addition, antenna prototype was fabricated and conducted experiment to verify the simulation. Apparently, simulated results are in very good agreement with the experimental results.
PL
W artykule przedstawiono badania szerokopasmowej anteny ze zmodyfikowaną konstrukcją. Osiągnięto wzmocnienie 3.83 dBi w paśmie 3.1 – 10.6 GHz. Porównano wyniki symulacji z badaniami wykonanego modelu.
5
Content available remote Analysis and design of circularly polarized capacitively-fed planar suspended antenna for universal UHF RFID applications
Boonying Komkris, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2020
|
R. 96, nr 1
100--107
EN
This research paper deals with the design of a circularly polarized reader antenna with a tennis ball-shaped radiating plate that operates at a frequency range of 860-960 MHz with the center frequency of 910 MHz. In the fabrication of the tennis ball-shaped radiating plate, a small annularring slot was first created on a circular radiating plate, followed by two diagonally opposite large arc-shaped annular-ring slots on either edge of the circular radiating plate and then the truncation of the corners of the remaining main element of the plate. A prototype antenna with the final tennis ball-shaped plate was subsequently assembled prior to excitation by the capacitively coupled feed technique to enhance |S11| bandwidth. The prototype antenna could achieve an average gain of 6.18 dBic, |S11| covering the frequency range of 837.6-966.2 MHz, and the circular polarization of 850.6-963.5 MHz, making it suitable for universal UHF RFID applications. In addition, simulations were carried out using CST Microwave Studio for comparison with the experimental results.
PL
W artykule zaprezentowano projekt anteny o kształcie piłki tenisowej pracujacej w zakresie częstotliwopści 860 – 960 MHz. Prototyp anteny pokrywał zakrs 837.6 – 966.2 MHz co spełnia wymagania uniwersalnej komunikacji UHF RFID.
6
Content available remote A dual-wideband crossed elliptical disc antenna with reconfigurable radiation patterns for multiband applications
Khoomwong Ekajit, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2020
|
R. 96, nr 4
43--48
EN
his paper presents the design of a crossed elliptical disc antenna with two broad operating bandwidths, which covers several widelyemployed frequency standards: IEEE 802.11b/g/n (WLAN), IEEE 802.16 (WiMAX), GSM/UMTS and LTE. The antenna comprises a crossed elliptical radiator, step-fed transitions, L-shaped slits and split (defected) circular ground-planes. Moreover, the antenna is equipped with four switches to have reconfigurable options for the conical-beam radiation patterns. The fabricated antenna prototype offers the dual broad-bandwidths of 1.17 GHz (1.88-3.05 GHz) and 2.05 GHz (4.67-6.72 GHz), which cover the required frequency bands. The peak gains of the normal-mode conical beams are 3.05 and 5.91 dBi at 2.45 GHz and 5.5 GHz, respectively. It has the advantage of having main-beam directions pointing to nearly the same tilted angle for both operating frequencies, which is very useful for most simultaneous dual-band operations and ceiling-mounted installations.
PL
W artykule zaprezentowano projekt eliptycznej anteny o dwóch pasmach częstotliwosci obsługującej zakresy zgodnie ze standardem IEEE 802.11b/g/n. Wykonany model anteny obsługuje pasma 1.88 – 3.05 GHz oraz 4.67 – 6. 72 GHZ. Wzmocnienie wynosiło 3.05 i 5.91 dBi.
7
Content available remote Gain Improvement of dual-band circular monopole antenna for 2.45/5.5 GHz WLAN applications
Lamultree Suthasinee, Jansri Chalee, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2019
|
R. 95, nr 5
157--160
EN
This paper presents a gain improvement of dual-band antenna for 2.45/5.5 GHz WLAN applications. The radiating element of the proposed antenna consists of a circular disc monopole with circular-slot laid on FR-4 substrate and backed by a partial ground plane. This partial ground plane is modified to improve its radiation performance. This proposed antenna operates over the frequencies of 2.4-2.485 GHz and 5.15- 5.825 GHz with nice radiation characteristics and magnitude of S11 better than -10 dB. An EM simulator has been used in the design and simulation. In addition, an experimental validation was set and measured to compare with the simulated results. All numerical results will be reported and discussed in the paper.
PL
W artykule opisano dwupasmową antenę do pasma2.45/5.5 GHz I sici WLAN. Antena składa się z okrągłego dysku i okrągłej szczeliny. Częściowo uziemione podłpoże poprawia właściuwości radiacyjne.
8
Content available remote Design and measurement of a probe-fed open-ended rectangular waveguide with four-stacked-coupling-aperture
Lamultree Suthasinee, Panthasa Rut, Phongcharoenpanich Chuwong
Przegląd Elektrotechniczny
|
2019
|
R. 95, nr 6
73--76
EN
This paper presents a design and measurement of symmetric bidirectional pattern antenna implemented by using a probe-fed open-ended rectangular waveguide (OERW) vertically attached with four-stacked-coupling-aperture (FSCA). For the OERW without FSCA, it provides asymmetric beam in forwards and backwards directions. With the effect of FSCA, that asymmetry is amended to be symmetry, and propagates the WLAN frequency band of 2.4–2.5 GHz with the return loss better than 10 dB, and maximum gain of 7.04 dBi. A prototype antenna was fabricated and measured. Obviously, the preliminary measured results are very reassuring, and reasonably in good agreement with simulation results.
PL
W artykule zaprezentowano projekt I badania symetrycznej, dwukierunkowej anteny wykorzystującej otwarty prostokątny falowód pionowo usytuowany z czterema sprzężonymi aperturami. Umożliwa ona asymetrię strumieni w przód i w tył. Antena obsługuje sieci WLAN o częstotliwości 2.4-2.5 GHz z maksymalnym wzmocnieniem 7.04 dB.
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