scholarly journals Realisasi dan Pengujian Antena Mikrostrip Array 4 Elemen dengan Polarisasi Melingkar untuk Aplikasi 4G/LTE

2018 ◽  
Vol 6 (2) ◽  
pp. 244
Author(s):  
EDDY WIYANTO ◽  
SYAH ALAM ◽  
BUDI HARSONO
Keyword(s):  
Reflection Coefficient ◽  
Circular Polarization ◽  
Microstrip Line ◽  
Axial Ratio ◽  
Tangent Loss ◽  
Substrate Thickness ◽  
Working Frequency ◽  
Tan Δ ◽  
Element Array ◽  
4G Lte

ABSTRAKPenelitian ini mengusulkan desain antena mikrostrip array empat elemen dengan polarisasi melingkar pada frekuensi kerja 2300 MHz untuk aplikasi 4G/LTE. Antena telah dirancang dan dipabrikasi menggunakan substrat jenis FR-4 Epoxy dengan nilai konstanta dielektrik (Ɛr) = 4.3, ketebalan substrat (h) = 1.6 mm dan loss tangen (tan δ) = 0.0265 dengan pencatu microstrip line. Polarisasi melingkar dengan axial ratio ≤ 3 dB dihasilkan dengan menggunakan metode truncated corner sedangkan untuk meningkatkan nilai gain digunakan metode array empat elemen. Dari hasil proses pengukuran diperoleh nilai koefisien refleksi sebesar -16.52 dB, VSWR sebesar 1.37 pada frekuensi kerja 2300 MHz dengan bandwidth yang diperoleh dari hasil pengukuran adalah 400 MHz (2050 MHz - 2450 MHz). Metode truncated corner berhasil menghasilkan polarisasi melingkar dengan nilai axial ratio 1.745 dB dan berhasil menghasilkan nilai gain sebesar 9.04 dB pada frekuensi kerja 2300 MHz untuk aplikasi LTE.Kata kunci: Antena, mikrostrip, koefisien refleksi, array, truncated corner ABSTRACTThis research proposed a four-element microstrip array antenna design withcircular polarization at a working frequency of 2300 MHz for 4G / LTEapplications. The antenna has been designed and fabricated using a FR-4 Epoxy substrate with a dielectric constant value (Ɛr) = 4.3, substrate thickness (h) = 1.6 mm and tangent loss (tan δ) = 0.0265 with microstrip line feeding. The circular polarization with axial ratio ≤3 dB was generated using the truncated corner method while for increasing the gain value used the four element array method. From the result of the measurement process, the reflection coefficient value is obtained -16.52 dB, VSWR of 1.37 at 2300 MHz working frequency with bandwidth obtained from the measurement result is 400 MHz (2050 MHz - 2450 MHz). The truncated corner method succeeded in generating a circular polarization with the axial ratio of 1.745 dB and succeeded to obtain the gain of 9.04 dB at work frequency of 2300 MHz for LTE application. Keywords: Antena, microstrip, reflection coefficient, array, truncated corner

scholarly journals Design Of Array and Circular Polarization Microstrip Antenna For LTE Communication

2018 ◽  
Vol 218 ◽  
pp. 03006 ◽  
Author(s):  
Syah Alam ◽  
Eddy Wijanto ◽  
Budi Harsono ◽  
Fidelia Samandatu ◽  
Markus Upa ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Single Element ◽  
Substrate Thickness ◽  
Rectangular Patch ◽  
Working Frequency ◽  
Tan Δ

This paper proposes a high gain microstrip antenna with circular polarization for LTE applications at a working frequency of 2300 MHz. Gain of antenna is optimized by using an array method with 4 elements arranged in plannar using feed line of 50 Ohm, 100 Ohm and 70.7 Ohm. The proposed antenna designed using FR-4 substrate with (ɛr) = 4.3, substrate thickness (h) of 1.6 mm and loss tangent (tan δ) of 0.0265. Gain of antenna can be optimized by increasing the number of elements in the array of the antenna. Circular polarization can be obtained by cutting the edge of a rectangular patch antenna with an angle of 45° . From the simulation results obtained reflection coefficient value of -20.02 dB and VSWR of 1.22 at the working frequency of 2300 MHz. The gain of proposed microstrip antenna is 10.56 dB with an impedance bandwidth value of 714 MHz (1925 - 2639 MHz). The proposed antenna obtained a circular polarization with axial ratio of 1.745 dB at working frequency of 2300 MHz. Array method with four elements increased the gain of antena until 45.07% compared to the single element antenna.

scholarly journals Circle Microstrip Antenna Simulation for Frequency 3.5 GHz

2021 ◽  
Vol 1 (1) ◽  
pp. 1-4
Author(s):  
Wildan Wildan ◽  
Dwi Astuti Cahyasiwi ◽  
Syah Alam ◽  
Mohd Azman Zakariya ◽  
Harry Ramza
Keyword(s):  
Dielectric Constant ◽  
Patch Antenna ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
Tangent Loss ◽  
Substrate Thickness ◽  
Total Radiation ◽  
Circular Patch Antenna ◽  
Working Frequency

This research proposed microstrip circular patch antenna simulation at a working frequency 3500 MHz. The antenna has been designed using a Duroid RT5880 substrate with dielectric constant (εr) = 2.2, substrate thickness (h) = 1.575 mm, and tangent loss = 0.0009 with microstrip line feeding. The simulation result, return loss value obtained -26.385, VSWR value 1.09, gain value 7.64 dBi, total radiation efficiency value -0.6489 dB, and bandwidth value 72 MHz (3468.8 MHz – 3541.9 MHz).

Dual-layered polarization and frequency reconfigurable microstrip antenna by rotating breach-truncated circular radiator

2017 ◽  
Vol 9 (8) ◽  
pp. 1705-1712
Author(s):  
Haixiong Li ◽  
Yunlong Gong ◽  
Jiakai Zhang ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Reflection Coefficient ◽  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Axial Rotation ◽  
Polarization Characteristic ◽  
The Novel ◽  
Test Results ◽  
Left Handed ◽  
Mechanical Rotation

In this study, a dual-layered polarization and frequency reconfigurable microstrip antenna is proposed based on sequential mechanical axial rotation of the circular metal radiator. The antenna can be reconfigured among three different polarized modes, including the linear polarization (LP), left-handed circular polarization and right-handed circular polarization in the band from 4.68 to 4.80 GHz (2.53%). The resonance frequency of the proposed antenna with the same LP mode could also be tuned in the range from 4.70 to 5.03 GHz by mechanical rotation of the breach-truncated circular metal radiator as well as the circular substrate. Furthermore, the polarization characteristic and frequency can be reconfigured, respectively, as the circular radiator is taken an axial rotation with an angle of 360°. The presented antenna in the four different states has been numerically simulated and fabricated for the experimental measurement, the investigated characteristics includes the port reflection coefficient, axial ratio, radiation pattern, gain, and the radiation efficiency. The simulated and test results agreed well with each other. This antenna enriches the novel mechanical reconfigurable method except for the popular electrical approach.

scholarly journals X-band compact dual circularly polarized isoflux antenna for nanosatellite applications

2017 ◽  
Vol 9 (7) ◽  
pp. 1509-1516 ◽  
Author(s):  
Eric Arnaud ◽  
Cyrille Menudier ◽  
Jamil Fouany ◽  
Thierry Monediere ◽  
Marc Thevenot
Keyword(s):  
Circular Polarization ◽  
Microstrip Line ◽  
Ground Plane ◽  
Axial Ratio ◽  
Horn Antenna ◽  
Azimuth Angle ◽  
Original Solution ◽  
Circularly Polarized ◽  
X Band

This paper presents an original solution to design a compact dual circularly polarized isoflux antenna for nanosatellite applications. This kind of antenna has been previously designed in our laboratory, for a single circular polarization. This antenna is composed of a dual circularly polarized feed and a choke horn antenna. This feed is a cross-shaped slot in the ground plane, which provides coupling between a patch and a ring microstrip line with two ports. It is located at the center of a choke horn antenna. The simulated antenna presents an axial ratio <3 dB and a realized gain close to 0 dB over a 400 MHz bandwidth (8.0–8.4 GHz) at the limit of coverage, i.e. 65° whatever the azimuth angle (φ) and the port. A 20 dB matching for each port and 13 dB isolation characteristics between the two ports have been achieved on this bandwidth. It has been realized and successfully measured.

A Novel Right Handed Circular Polarization Folded Reflectarray Antenna at 60 GHz

2017 ◽  
Vol 7 (3) ◽  
pp. 1580
Author(s):  
Mohd Fairus Mohd Yusoff ◽  
Ronan Sauleau ◽  
Zaharah Johari ◽  
Mohamad Kamal A. Rahim ◽  
Huda A. Majid
Keyword(s):  
Reflection Coefficient ◽  
Circular Polarization ◽  
Axial Ratio ◽  
Unit Cell ◽  
60 Ghz ◽  
Radiation Patterns ◽  
Circularly Polarized ◽  
Left Handed ◽  
Antenna Directivity ◽  
Reflectarray Antenna

A novel right-handed circular polarization (RHCP) folded reflectarray antenna with optimized parameters is presented at 60GHz. The RHCP folded reflectarray antenna is designed using left handed circularly polarized selective surface (LHCPSS) Pierrot unit cell. Through simulation, it is shown that the antenna operates well at 60GHz. The maximum antenna directivity is 19dB with a reflection coefficient below -15dB. The radiation patterns showed good responses with side lobes level below -10dB. In addition, the best axial ratio at 60GHz is achieved as 0.75dB.

scholarly journals LHCP four patches stack triangular truncated antenna using corporate feed microstrip-line for CP-SAR sensor

2021 ◽  
Vol 11 (5) ◽  
pp. 4125
Author(s):  
Muhammad Fauzan Edy Purnomo ◽  
Vita Kusumasari ◽  
Rudy Yuwono ◽  
Rahmadwati Rahmadwati ◽  
Rakhmad Romadhoni ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Microstrip Antenna ◽  
Microstrip Line ◽  
Axial Ratio ◽  
Synthetic Aperture ◽  
Impedance Bandwidth ◽  
Target Frequency ◽  
Left Hand ◽  
S Parameter ◽  
Aerial Vehicle

<span>In this paper, we acquire the configuration of the left-hand circular polarization (LHCP) array four patches stack triangular truncated microstrip antenna. This construction use the basic corporate feed microstrip-line with modified lossless T-junction power divider on radiating patch for circularly polarized-synthetic aperture radar (CP-SAR) sensor embedded on unmanned aerial vehicle (UAV) with compact, small, and simple configuration. The design of circular polarization (CP) is realized by truncating the whole three tips and adjusting the parameters of antenna at the target frequency, <em>f </em>= 5.2 GHz. The results of characteristic performance and <em>S</em>-parameter for the LHCP array four patches stack antenna at the target frequency show successively about 9.74 dBic of gain, 2.89 dB of axial ratio (<em>Ar</em>), and </span><span>-</span><span>10.91 dB of S-parameter. Moreover, the impedance bandwidth and the 3 dB-<em>Ar</em> bandwidth of this antenna are around 410 MHz (7.89%) and 100 MHz (1.92%), respectively.</span>

scholarly journals Circular Polarization Array Antenna with Triplate Stripline Elliptic Resonator Antennas

2021 ◽  
Vol 19 ◽  
pp. 256-261
Author(s):  
Yumi Takizawa ◽  
Atsushi Fukasawa ◽  
Cahya Edi Santosa ◽  
Josaphat Tetuko Sri Sumantyo
Keyword(s):  
Circular Polarization ◽  
High Efficiency ◽  
Axial Ratio ◽  
Microwave Energy ◽  
The Novel ◽  
Central Frequency ◽  
Plane Antenna ◽  
X Band ◽  
Tan Δ ◽  
Directive Gain

This paper presents a plane antenna and array for X-band circular polarization. The novel factors of this development are elliptic resonator antenna and Glass-Epoxy substrates. High efficiency in resonance and radiation of microwave energy is expected by elliptic resonators. Easy process in fabrication is expected by Glass-Epoxy substrate. Elliptic ratios of feed- and reactance-elements are chosen independently each other. The dielectric constant εr and tan δ are 4.6 and 0.010 respectively. Enough bandwidth of axial ratio of circular polarization and directive gain are confirmed to be 15 % of central frequency and 10 dB respectively for antenna array.

scholarly journals Development Of Circular Polarization 5.5 Ghz Microstrip Antenna E-Shaped For Synthetic Aperture Radar Communication

2021 ◽  
Vol 328 ◽  
pp. 02010
Author(s):  
Kunto Aji Wibisono ◽  
Riza Alfita ◽  
Alfian Nur Rahman ◽  
Farohaji Kurniawan ◽  
Adi Kurniawan ◽  
...  
Keyword(s):  
Dielectric Constant ◽  
Reflection Coefficient ◽  
Synthetic Aperture Radar ◽  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Synthetic Aperture ◽  
Measurement Result ◽  
Left Handed ◽  
Aperture Radar

This paper presents development of circular polarization 5.5 GHz microstrip antenna E-shaped for synthetic aperture radar Communication. Microstrip antenna designed Truncated E-shaped the centered frequency is 5.5 GHz and bandwidth that is wide 200 Mhz for Synthetic Aperture Radar communication. The proposed antenna on 1.6 mm thickness of FR-4 substrate with the dielectric constant 4.6. The best simulated result can achieve -10dB reflection coefficient bandwidth 600 Mhz, VSWR 1,578, gain 5,67 dbiC and axial ratio 2,947 with left-handed circular polarization. The best measurement result can achieve -10 dB reflection coefficient bandwidth 951 MHz (5.304-6.255), VSWR 1,25, gain 6,17 dBiC with left-handed circular polarization.

scholarly journals Triple-Band Dual-Sense Circularly Polarized Hybrid Dielectric Resonator Antenna

Sensors ◽  
2018 ◽  
Vol 18 (11) ◽  
pp. 3899 ◽  
Author(s):  
Amir Altaf ◽  
Munkyo Seo
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Microstrip Line ◽  
Axial Ratio ◽  
Dielectric Resonator Antenna ◽  
Circularly Polarized ◽  
Left Handed ◽  
Measurement Results ◽  
Microstrip Ring ◽  
Triple Band

In this paper, a triple-band dual-sense circularly polarized (CP) hybrid dielectric resonator antenna is proposed. A modified hexagonal dielectric resonator (DR) is top-loaded with a square microstrip ring (SMR). A vertical-tapered-strip connected to a 50- Ω microstrip line is used to excite the proposed antenna. It is found that the lower and central CP bands correspond to left-handed circular polarization and are produced by the TM 11 and TE 111 modes of the SMR and modified hexagonal DR, respectively. The upper CP band is formed by the combination of the quasi-TM 21 mode of the SMR and quasi-TE 111 mode of the DR that exhibits right-handed circular polarization. The measurement results of the fabricated prototype show triple-band response for |S 11 | < −10 dB with impedance bandwidths (IBWs) of 17.4% (1.75–2.03 GHz), 28.13% (2.23–2.96 GHz), and 2.97% (3.65–3.76 GHz) in the lower, central, and upper bands, respectively. The measured 3 dB axial ratio bandwidths lying within −10 dB IBWs are 3.69% (1.86–1.93 GHz), 5.46% (2.67–2.82 GHz), and 2.15% (3.68–3.76 GHz) along with the peak gains of 5 dBic, 5.28 dBic, and 2.36 dBic in the lower, central, and upper bands, respectively.

Microstrip-line-fed inverted L-shaped circularly polarized antenna for C-band applications

2021 ◽  
pp. 1-9
Author(s):  
Karunesh Srivastava ◽  
Brijesh Mishra ◽  
Rajeev Singh
Keyword(s):  
Circular Polarization ◽  
High Frequency ◽  
Microstrip Line ◽  
Ground Plane ◽  
Axial Ratio ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
High Frequency Structure Simulator ◽  
Frequency Structure ◽  
Peak Gain

Abstract A circularly polarized stub-matched inverted L-shaped antenna for C-band applications is presented in this communication. Antenna parameters of inverted L-shape on the radiating patch and slits, notch, square strips and stub on the ground plane and the effect of these are analyzed. The proposed optimized antenna (A5: 0.54λ0 × 0.54λ0 × 0.02λ0 mm3) is selected among antennas (A1 – A5) with 5.1 GHz design frequency after simulation through high-frequency structure simulator (HFSS). Circular polarization is obtained by introducing stub/perturbation on the ground plane. By introducing stub, the highest measured (S11 < − 10 dB) impedance bandwidth of 50.9% (3.48 – 5.86 GHz) is observed amongst the reported and compared bandwidths. Peak gain of 5.32 dBi and 3 dB axial ratio bandwidth of 16.2% (4.71 – 5.54 GHz) is reported in the present work. An antenna is useful in the entire downlink frequency (3.7 – 4.2 GHz) of the C band.

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