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 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

ANALYSIS PERFORMANCE OF SINGLY-FED CIRCULARLY POLARIZED MICROSTRIP ANTENNA FOR WIRELESS COMMUNICATION

2016 ◽  
Vol 78 (5-9) ◽  
Author(s):  
Muhammad Fauzan Edy Purnomo ◽  
Hadi Suyono ◽  
Panca Mudjirahardjo ◽  
Rini Nur Hasanah
Keyword(s):  
Wireless Communication ◽  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Microstrip Antennas ◽  
Impedance Bandwidth ◽  
Antenna Structure ◽  
Circularly Polarized ◽  
Large Bandwidth ◽  
Doubly Fed

The circularly polarized (CP) microstrip antennas, both of singly- and doubly-fed types, possess inherent limitation in gain, impedance and axial-ratio bandwidths. These limitations are caused mainly by the natural resonance of the patch antenna which has a high unloaded Q-factor and the frequency-dependent excitation of two degenerative modes (TM01 and TM10) when using a single feed. Many applications which require circular polarization, large bandwidth, and good performance, especially in the field of wireless communication, are still difficult to be designed by using antenna software. Some consideration to take will include the application target and design specification, the materials to be used, and the method to choose (formula, numerical analysis, etc). This paper explains and analyzes the singly-fed microstrip antenna with circular polarization and large bandwidth. This singly-fed type of microstrip antenna provides certain advantage of requiring no external circular polarizer, e.g. the 900 hybrid, as it only needs to apply some perturbation or modification to a patch radiator with a standard geometry. The design of CP and large-bandwidth microstrip antenna is done gradually, by firstly truncating one tip, then truncating the whole three tips, and finally modifying it into a pentagonal patch structure and adding an air-gap to obtain larger bandwidths of impedance, gain and axial ratio. The last one antenna structure results in a novelty because it is a rare design of antenna which includes all types of bandwidth (impedance, gain, and axial ratio) being simultaneously larger than the origin antenna. The resulted characteristic performance of the 1-tip (one-tip) antenna shows respectively 1.9% of impedance bandwidth, 3.1% of gain bandwidth, and 0.45% of axial-ratio bandwidth. For the 3-tip (three-tip) step, the resulted bandwidths of respectively impedance, gain, and axial ratio are 1.7%, 3.3% and 0.5%. The pentagonal structure resulted in the bandwith values of 15.67%, 52.16% and 4.11% respectively for impedance, gain, and axial ratio. 

Reconfigurable circularly polarized capacitive coupled microstrip antenna

2016 ◽  
Vol 9 (4) ◽  
pp. 843-850 ◽  
Author(s):  
Dinesh Kumar Singh ◽  
Binod Kumar Kanaujia ◽  
Santanu Dwari ◽  
Ganga Prasad Pandey ◽  
Sandeep Kumar
Keyword(s):  
Circular Polarization ◽  
Microstrip Antenna ◽  
Axial Ratio ◽  
Dual Band ◽  
Single Frequency ◽  
Impedance Bandwidth ◽  
Pin Diode ◽  
Dual Frequency ◽  
Pin Diodes ◽  
Circularly Polarized

The design and measurement of reconfigurable circularly polarized capacitive fed microstrip antenna are presented. Small isosceles right angle triangular sections are removed from diagonally opposite corners for the generation of circular polarization (CP) of axial ratio bandwidth of 11.1%. Horizontal slits of different lengths are inserted at the edges of the truncated patch to provide the dual-band CP and by switching PIN diodes across the slits ON and OFF, reconfigurable circularly polarized antenna is realized. The antenna shows dual-band behavior with reconfigurable CP. In order to enhance the operation bandwidth of the antenna, an inclined slot was embedded on the patch along with PIN diodes across the horizontal slits. This proposed antenna gave an impedance bandwidth of 66.61% (ON state) ranging from 4.42 to 8.80 GHz and 68.42% (OFF state) ranging from 4.12 to 8.91 GHz and exhibits dual-frequency CP with PIN diode in OFF state and single-frequency CP with PIN diode in ON state with good axial ratio bandwidth. The axial ratio bandwidth of 4.42, 2.35, and 2.72% is obtained from the antenna. The antenna has a similar radiation pattern in all the three different CP bands and almost constant gain within the bands of CP operation.

scholarly journals High-Gain Circularly-Polarized Elliptically-Annular Antenna-Array with Reduced Side-Lobe Level

2020 ◽  
Vol 9 (4) ◽  
pp. 2319-2325
Keyword(s):  
Circular Polarization ◽  
Antenna Array ◽  
Satellite Communication ◽  
Axial Ratio ◽  
Side Lobe ◽  
High Gain ◽  
Side Lobe Level ◽  
Single Element ◽  
Circularly Polarized ◽  
Gain Enhancement

A single feed microstrip patch elliptically annular antenna array has been proposed for high gain circularly polarized (CP) radiation. An array of elliptically annular patches antenna resonates at a frequency of 3.77 GHz which can be used in satellite communication and radar application. A corporate feed network with quarter-wave transformer has been used for uniform excitation of all the array elements. Thus a good circular polarization is obtained by using a single feed with enhanced gain 15.62 dB compared to single patch. The radiation pattern, axial ratio and input impedance of the proposed elliptically annular antenna array is compared with single element elliptically annular antenna. A substantial gain enhancement with low side lobe level (SLL) is observed keeping circular polarization intact. Further, simulated and measured results of the proposed antenna array have been compared and found that axial ratio and gain are in good agreement.

scholarly journals New Compact Wideband Microstrip Antenna for Wireless Applications

2018 ◽  
Vol 7 (4) ◽  
pp. 85-92 ◽  
Author(s):  
S. Shandal ◽  
Y. S. Mezaal ◽  
M. Kadim ◽  
M. Mosleh
Keyword(s):  
Microstrip Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Computer Applications ◽  
Impedance Bandwidth ◽  
Substrate Thickness ◽  
Resonant Frequencies ◽  
Wireless Applications ◽  
Rectangular Patch ◽  
Rectangular Microstrip Antenna

In this paper, a miniature rectangular microstrip antenna over partial ground plane is presented by utilizing a space-filling property of fractal geometry in this design. It is simulated by High Frequency Software Simulator (HFSS) software, fabricated and tested by Vector Network Analyzer (VNA).Two types of slots are introduced in order to enhance antenna parameters such as bandwidth and return loss S1.1. This antenna is fabricated on FR4 substrate with a small size of (18 x 16 x 1.5) mm3, 1.5mm substrate thickness, 4.3 permittivity and 0.02 loss tangent. To feed this antenna,  microstrip line feed is used. This antenna is implemented for wide bandwidth (4.8-11.6) GHz, and has three resonant frequencies at 5.5GHz, 8.3GHz and 10.7GHz with impedance bandwidth of 6.8GHz. The gap value g between partial ground plane and rectangular patch at top layer is optimized in order to achieve optimal simulated return loss S1.1 is (-46,-32,-14) dB at three resonant frequencies (5.5, 8.3, 10.7) GHz and optimal radiation efficiency of 93.42% with gain of 3.63dB. The simulated results have tolerable agreement with measured results. This antenna is suitable for wireless computer applications within  C and X band  communications.

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 Metallic Reflector-Based X-Band Circularly Polarized Hollow Dielectric Resonator Antenna for High Gain in UWB Applications

2021 ◽  
Author(s):  
SACHIN KUMAR YADAV ◽  
Amanpreet Kaur ◽  
Rajesh Khanna
Keyword(s):  
Circular Polarization ◽  
Dielectric Resonator ◽  
Near Field ◽  
Axial Ratio ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Circularly Polarized ◽  
X Band ◽  
Peak Gain

Abstract A circularly polarized hollow dielectric resonator antenna (CPHDRA) is designed for X-band applications. Rectangular dielectric resonator (RDR) is used as a radiator element, fed by a quarter-wave transformer (QWT) feedline. By performance of the RDR antenna, an air cylindrical rod structure is extracted from RDR to enhance the gain and impedance bandwidth. Two parasitic strips are placed on the top of the RDR to achieve circular polarization with reported ≤ 3-dB axial ratio (AR) bandwidth for X-band applications. In this article, UWB antenna covers range from 2.74 to 10.4GHz by using asymmetrical defective ground structure (DGS). In near field of the dielectric resonator, three different radiating modes namely HE11δ, HE21δ, HE23δ, and HE32δ are at 4.4, 6, 8.8, and 9.9 GHz. For the generation of circular polarization (CP), two orthogonal modes are generated at 8.8 and 9.9 GHz as per XZ and YZ planes. It has reported 23.8 % (8 to 10.1 GHz) of 3-dB AR bandwidth. The simulated and measured impedance bandwidths are 118.46 % and 121.12 % along with a peak gain of 6.55 dB without the use of a metallic reflector. By using a metallic reflector suspended in the bottom side of the substrate with a distance of 13.1mm is reported along with the peak gain of 9.8 dBi.

scholarly journals A Compact Circular Polarized Antenna for Deep Space Applications

2019 ◽  
Vol 9 (1S5) ◽  
pp. 58-61
Keyword(s):  
Circular Polarization ◽  
Dielectric Material ◽  
Low Cost ◽  
Axial Ratio ◽  
Coaxial Cable ◽  
Operating Frequency ◽  
Impedance Bandwidth ◽  
Deep Space ◽  
Space Applications ◽  
Rectangular Patch

A compact Circular polarized rectangular patch antenna has been designed for the Deep Space applications in the Ku band with an operating frequency of 13.15GHz. The patch has been truncated at the diagonal corners and two L shaped slots are been etched in the patch to get the circular polarization. A 50Ω coaxial cable has been used to excite the antenna. The overall dimension of the antenna is 13mm×13mm×0.508mm which is 0.65λ×0.65λ making the proposed antenna a compact one. The Proposed antenna is having an impedance bandwidth of 25GHz ranging from 13GHz to 13.25GHz with a gain of 7.82dB at the operating frequency of 13.15GHz. The axial ratio of the antenna at the operating frequency is 2.94dB which indicate the circular polarization. Low cost FR4 material is been used as the laminate base for the antenna which will act as the dielectric material.

Design and characterization of an efficient multi-layered circularly polarized microstrip antenna

2015 ◽  
Vol 8 (7) ◽  
pp. 1101-1109 ◽  
Author(s):  
Pravin R. Prajapati ◽  
Amalendu Patnaik ◽  
M. V. Kartikeyan
Keyword(s):  
Microstrip Antenna ◽  
Axial Ratio ◽  
High Gain ◽  
Center Frequency ◽  
Impedance Bandwidth ◽  
Mobile Telecommunication ◽  
Defected Ground Structure ◽  
Circularly Polarized ◽  
Laboratory Prototype

A novel asymmetric “+” shaped fractal slotted circularly polarized microstrip antenna with a Yagi–Uda structure is proposed. Four asymmetric plus shape slots are embedded symmetrically in the center of all four quadrants of a square patch. To suppress undesirable higher modes, dumbbell-shaped defected ground structure (DGS) is introduced at the ground layer of the antenna. We introduce a method to compensate the reduction in gain occurring due to the presence of DGS, without changing in the overall size of the antenna. A 3 dB axial ratio bandwidth of 4 MHz at center frequency of 862 MHz, 10 dB impedance bandwidth of 13.20 MHz and a gain of 4.25 dB is achieved with the proposed antenna. A laboratory prototype of the proposed antenna is made to cross-verify the simulation results. Very good agreements between the two are obtained. The proposed antenna may prove useful for International Mobile Telecommunication application for designing high-gain arrays.

A high gain wideband circularly polarized microstrip antenna

2020 ◽  
Vol 12 (7) ◽  
pp. 678-687
Author(s):  
Arun Kumar ◽  
Santanu Dwari ◽  
Ganga Prasad Pandey ◽  
Binod Kumar Kanaujia ◽  
Dinesh Kumar Singh
Keyword(s):  
Microstrip Antenna ◽  
Axial Ratio ◽  
High Gain ◽  
Split Ring Resonator ◽  
Impedance Bandwidth ◽  
Reflected Waves ◽  
Circularly Polarized ◽  
Gain Enhancement ◽  
Reflector Surface ◽  
Printed Monopole Antenna

AbstractIn this paper, a high gain wideband circularly polarized (CP) microstrip antenna is presented for broadband operation. The proposed structure comprised of a partially grounded printed monopole antenna loaded with a split ring resonator and a metallic reflector. By using the metallic reflector surface underneath the patch radiator results in the reflected waves in the same phase with main lobe radiation, thereby improving the gain and it also acts like a secondary radiator to generate wideband CP behavior in the proposed design. A gain enhancement of 4.3 dBi is achieved in the operating frequency band as compared with the design without a metallic reflector. The maximum gain achieved in the presented method is 8.6 dBic over the entire operating range. The proposed design shows a wideband behavior ranging from 4.30 to 9.10 GHz with the 10-dB impedance bandwidth of 71.64%. In addition, the proposed design yielded a broadside right hand CP radiation with a 3-dB axial ratio bandwidth of 33.88% from 4.98 to 7.01 GHz. The proposed antenna is fabricated and experimental results on reflection coefficient, gain, axial ratio, and radiation patterns concede well with simulation results.

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