scholarly journals PENGGUNAAN MATEREIAL DIELEKTRIK BUATAN BERBASIS REKTANGULAR PATCH PADA ANTENA HORN UNTUK RADAR X-BAND

2021 ◽  
Vol 8 (1) ◽  
pp. 986
Author(s):  
M. Reza Hidayat
Keyword(s):  
Return Loss ◽  
Dielectric Material ◽  
Data Communication ◽  
Horn Antenna ◽  
Dielectric Materials ◽  
X Band ◽  
Measurement Results ◽  
Simulation Results ◽  
The Difference ◽  
The Waves

Dielectric materials play an important role in antennas in an effort to support data communication. The material used by the dielectric is usually not even one material, however, it is a combination of several dielectric materials. From the final simulation results, the antenna is obtained at a working frequency of 7.822 GHz with a return loss of -20.336 dB, a bandwidth of 830.6 MHz and a VSWR of 1.21. Whereas in the measurement results of the horn antenna using dielectric material that has been realized, it is found that the antenna is able to work at a frequency of 8.41GHz with a return loss of -13.31 dB, a bandwidth of 110 MHz, and a VSWR of 1.61. The difference in parameter results could be due to dimensional differences between the simulated antenna and the antenna that has been realized. The difference in parameter results could be due to dimensional differences between the simulated antenna and the antenna that has been realized. Measurements are not carried out in a closed room or specifically for measuring the antenna, thus allowing interference to the waves from the antenna being measured because the simulation results are made in ideal conditions.

All standard materials flat reflector made by transformation electromagnetics

2014 ◽  
Vol 6 (2) ◽  
pp. 201-206 ◽  
Author(s):  
Mark Clemente Arenas ◽  
Anne Claire Lepage ◽  
Xavier Begaud ◽  
Paul Henri Tichit ◽  
André de Lustrac
Keyword(s):  
Design Methodology ◽  
Dielectric Material ◽  
Dielectric Materials ◽  
Original Method ◽  
Classical Solutions ◽  
Radiation Characteristics ◽  
Mathematical Relation ◽  
Simulation Results ◽  
Half Power ◽  
Realistic Structure

In this paper, the design methodology of a flat reflector composed with standard dielectric material and using transformation electromagnetics (TE) is presented. First, the mathematical relation between a flat reflector and a parabolic one is described. The TE principle is then described. Some realization issues are highlighted, leading to approximations and compromises in order to design a more realistic structure. In this way, a flat reflector made only with standard dielectric materials is presented, using an original method to achieve the desired spatial permittivity variation. The simulation results of different configurations for the flat reflector are presented and compared to classical solutions in order to prove the thickness reduction and the improvement of radiation characteristics in terms of gain and half-power beamwidth.

scholarly journals Broad Band Equal-Length And Equal-Width Substrate Integrated Waveguide Four Channel Power Divider

2015 ◽  
Vol 37 ◽  
pp. 334
Author(s):  
Masoud Khoubroo Eslamloo ◽  
Pejman Mohammadi
Keyword(s):  
Return Loss ◽  
Propagation Constant ◽  
Broad Band ◽  
Equal Length ◽  
Power Divider ◽  
Substrate Integrated Waveguide ◽  
Transmission Coefficients ◽  
Measurement Results ◽  
Simulation Results ◽  
Good Agreement

In this letter a novel broad band substrate integrated waveguide (SIW) power divider is proposed. It consist of four output channels made by SIW with equal length and equal width. Design equations and process are given with mathematical analysis. The propagation constant of the output signals have been adjusted by utilize only four via in the middle of the output arms. As a result a novel equal output power divider, is obtained accordingly. The experimental results of a prototype at 10 GHz shows 3.1 GHz bandwidth in both simulation and measurement results. Return loss and transmission coefficients have good agreement with simulation results in considered band.

scholarly journals Substrate integrated waveguide bandpass filter for short range device application using rectangular open loop resonator

2021 ◽  
Vol 11 (5) ◽  
pp. 3747
Author(s):  
Dian Widi Astuti ◽  
Rizki Ramadhan Putra ◽  
Muslim Muslim ◽  
Mudrik Alaydrus
Keyword(s):  
Short Range ◽  
Return Loss ◽  
Bandpass Filter ◽  
Open Loop ◽  
Frequency Region ◽  
Substrate Integrated Waveguide ◽  
Network Analyzer ◽  
Measurement Results ◽  
Simulation Results ◽  
Good Agreement

The substrate integrated waveguide (SIW) structure is the candidate for many application in microwave, terahertz and millimeter wave application. It because of SIW structure can integrate with any component in one substrate than others structure. A kind components using SIW structure is a filter component, especialy bandpass filter. This research recommended SIW bandpass filter using rectangular open loop resonator for giving more selectivity of filter. It can be implemented for short range device (SRD) application in frequency region 2.4 - 2.483 GHz. Two types of SIW bandpass filter are proposed. First, SIW bandpass filter is proposed using six rectangular open loop resonators while the second SIW bandpass filter used eight rectangular open loop resonators. The simulation results for two kinds of the recommended rectangular open loop resonators have insertion loss (S<sub>21</sub> parameter) below 2 dB and return loss (S<sub>11</sub> parameter) more than 10 dB. Fabrication of the recommended two kind filters was validated by Vector Network Analyzer. The measurement results for six rectangular open loop resonators have 1.32 dB for S<sub>21</sub> parameter at 2.29 GHz while the S<sub>11</sub> parameter more than 18 dB at 2.26 GHz – 2.32 GHz. While the measurement results has good agreement for eight rectangular open loop resonators. Its have S<sub>21</sub> below 2.2 dB at 2.41 – 2.47 GHz and S<sub>11</sub> 16.27 dB at 2.38 GHz and 11.5 dB at 2.47 GHz.

scholarly journals A New Planar Microwave Sensor for Building Materials Complex Permittivity Characterization

Sensors ◽  
2020 ◽  
Vol 20 (21) ◽  
pp. 6328
Author(s):  
João G. D. Oliveira ◽  
José G. Duarte Junior ◽  
Erica N. M. G. Pinto ◽  
Valdemir P. Silva Neto ◽  
Adaildo G. D’Assunção
Keyword(s):  
Relative Permittivity ◽  
Building Materials ◽  
Dielectric Materials ◽  
Line Of Sight ◽  
Scattering Parameters ◽  
Microwave Sensor ◽  
Sensor Structure ◽  
Measurement Results ◽  
Concrete Blocks ◽  
The Difference

A new microwave sensor is proposed to characterize the complex relative permittivity of building non-magnetic materials and used in the characterization of three concrete samples. The proposed sensor structure consists of a log-periodic planar antenna with microstrip elements tilted forward by an angle β and printed, alternately, on the top and bottom sides of a dielectric layer. The operation principle is based on the measurement of the scattering parameters S11 and S21 in a free space propagation transmitter-receiver setup, for both cases with the material under test (MUT) sample (non-line-of-sight, NLOS) and without it (line-of-sight, LOS). A prototype is fabricated and measured to determine the scattering parameters of concrete samples. After measurements, the obtained results are used in the efficient and accurate Nicolson–Ross–Weir (NRW) method, making it possible to estimate the values of the complex relative permittivity of the concrete blocks. The sensor design is demonstrated from initial simulations to measurements for validation of the developed prototype. The obtained results for the complex relative permittivity of concrete are in agreement with those available in the literature and the difference between the simulated and measurement results for the sensor antenna resonant frequency is 4.71%. The used measurement setup can be applied to characterize different types of solid or liquid dielectric materials.

scholarly journals Design and Optimization of Genetic Algorithm (GA) based High Gain and Directive CPW-Fed Slot Dipole Antenna for Wideband Applications

2019 ◽  
Vol 9 (2) ◽  
pp. 2572-2575
Keyword(s):  
Genetic Algorithm ◽  
Return Loss ◽  
High Gain ◽  
Dipole Antenna ◽  
Design And Optimization ◽  
X Band ◽  
Measurement Results ◽  
Loss Parameter ◽  
Operating Bandwidth ◽  
Wide Operating

Genetic Algorithm (GA) is proposed in this paper for the design of a wide bandwidth, high gain and directive CPW-fed slot-dipole antenna. The proposed antenna is built on a FR4 substrate that is cheap and easy to produce. Genetic Algorithm is used to select parameters that reflect antenna geometry to achieve wider bandwidth and reduced return loss (parameter S11) and high gain values at resonant frequency. The antenna design shows a wide operating bandwidth of 1.4 GHz (simulated) and 1.3 GHz (measured) over the X-band, a return loss (S11) of -25.83 dB (simulated) and -23.08 (measured) and a gain and directivity of 5.61 dB (simulated) and 11.87 dB (simulated) at 10.5 GHz resonating frequencies. In this work, all simulations were performed using the ANSYS HFSS v14.0 software. A prototype antenna was produced and then characterized using VNA to validate the design. Measurement results were in good agreement with the results simulated using ANSYS HFSS.

scholarly journals A novel tri-band reconfigurable microstrip patch antenna

Frequenz ◽  
2020 ◽  
Vol 74 (7-8) ◽  
pp. 247-253
Author(s):  
Wen Tao Li ◽  
Meng Wei ◽  
Bahareh Badamchi ◽  
Harish Subbaraman ◽  
Xiaowei Shi
Keyword(s):  
Patch Antenna ◽  
Simple Structure ◽  
Microstrip Patch Antenna ◽  
Pin Diodes ◽  
Microstrip Patch ◽  
X Band ◽  
Measurement Results ◽  
Simulation Results ◽  
Good Agreement ◽  
Ku Band

AbstractIn this paper, a novel tri-band reconfigurable patch antenna with simple structure is presented. By changing the on-off state of only two PIN diodes, the antenna can operate in three bands, namely X-band, Ku-band, and Ka-band. The overall size of the antenna is 0.24λL × 0.5λL × 0.019λL, where λL is the free-space wavelength of the lowest operating frequency. A prototype is fabricated and measured to verify the design. The measurement results are in good agreement with the simulation results, which indicate that the proposed antenna can be flexibly switched between three bands of 10.9–11.18 GHz, 15.65–15.9 GHz, and 32.3–33.6 GHz with stable radiation patterns.

scholarly journals Rancang Bangun Antenna Mikrostrip Peripheral Slits Linear Array Untuk Aplikasi Wi-Fi

2017 ◽  
Vol 13 (1) ◽  
pp. 18
Author(s):  
Syah Alam ◽  
I Gusti Nyoman Yogi Wibisana ◽  
Indra Surjati
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Linear Array ◽  
Antenna Design ◽  
Rectangular Patch ◽  
Telecommunication Technology ◽  
Feeding Technique ◽  
Measurement Results ◽  
Simulation Results

Wireless Fidelity (Wi-Fi) is the modern telecommunication technology nowadays being so widely used and developed at operating frequency of 2.4 GHz, that needs microstrip antenna as best suited supporting means for transmitting and receiving data signals as well at its wave transceiver subsystem.  The proposed antenna design were consists of four elements rectangular patch antenna with peripheral slits technique arranged in a linear array of 2x2 operating at the frequency of 2.4 GHz until 2.5 GHz. In addition to that, the feeding technique used in this research is microstrip fed line. The simulation from this research resulted in reducing the size of related antenna dimension up to 17% compared to that of four elements array without peripheral slits. It is also apparent that the bandwidth of the proposed antenna is 320 MHz (2.253 GHz–2.573 GHz) which is equivalent to bandwidth increase percentage of 13.07%, The simulation results in the center of frequency 2.448 GHz obtained return loss of -26.14 dB with a VSWR of 1.104. The measurement results obtained bandwidth of the proposed antenna is 150 MHz (2.424 GHz–2.574 GHz) which is equivalent to 12% increase of bandwidth percentage. The results of measurements process at the center of frequency 2.448 GHz obtained value of return loss of -16.88 dB with  VSWR of 1.304.

A New Compact Dual-Band Filter Using SIR

2012 ◽  
Vol 424-425 ◽  
pp. 573-576
Author(s):  
Jin Ping Hu ◽  
Guo Hui Li ◽  
Wei Dong Fang ◽  
Wei Zhang ◽  
Hai Ping Hu
Keyword(s):  
High Performance ◽  
Return Loss ◽  
Bandpass Filter ◽  
Dual Band ◽  
Fractional Bandwidth ◽  
Theoretical Simulation ◽  
Band Filter ◽  
Compact Size ◽  
Measurement Results ◽  
Simulation Results

A narrowband dual-band bandpass filter based on step impedance resonator (SIR) is proposed in this paper to realize high performance with a compact size. The center frequencies of the designed filter are 2.4 and 5.8GHz, where it is suitable for wireless communication system. The absolute bandwidth approaches 200MHz with 8.3% fractional bandwidth at -3dB, and the simulations show that the return loss of the first and the second band is lower than -20dB. Between the two passbands, there is a transmission zero which can achieve a high out-band isolation. For demonstration, the filter has been fabricated and the measurement results show the excellent agreement with the theoretical simulation results

scholarly journals Design & Analysis of Microstrip Patch Antenna Using Different Dielectric Materials for WiMAX Communication System

2016 ◽  
Vol 4 (1) ◽  
pp. 19 ◽  
Author(s):  
Md. Moidul Islam ◽  
Raja Rashidul Hasan ◽  
Md. Mostafizur Rahman ◽  
Kazi Saiful Islam ◽  
S.M. Al-Amin
Keyword(s):  
Communication System ◽  
Patch Antenna ◽  
Return Loss ◽  
Dielectric Material ◽  
Dielectric Materials ◽  
Microstrip Patch Antenna ◽  
Radiation Efficiency ◽  
Total Efficiency ◽  
Microstrip Patch ◽  
Materials Used

This Paper presents Microstrip patch antenna for WiMAX communication system which operate at 5.8 GHz frequency band. The main objective of this paper is to design and observe the performance of the designed microstrip patch antenna for different dielectric materials. The size of the designed antenna has been also miniaturized. Better performance is observed for FR4 and dupont-951 dielectric material. For FR4 radiation efficiency is-2.776 dB and total efficiency is -3.026 dB at 5.8 GHz, this indicates better performance. And for dupont-951 the return loss is much lower comparing to the other dielectric materials used in this research, which is -16.609 dB. Also for dupont-951 and FR4, VSWR is found 1.35 and 1.7 respectively which is desirable. Also the size of the antenna has been reduced. In this paper we also observed and analyzed the radiation pattern of far field region, gain, radiation efficiency and total efficiency for different dielectric materials.

scholarly journals Konversi Antena Mimo 2x2 Frekuensi 2,4 Ghz Menjadi 5,5 Ghz Menggunakan Patch Bowtie Berbasis Dual Slot Segi Empat dan Single Slot Segitiga

2021 ◽  
Vol 7 (2) ◽  
pp. 161-173
Author(s):  
M. Reza Hidayat ◽  
Reza Agung Permana ◽  
Susanto Sambasri
Keyword(s):  
Insertion Loss ◽  
Communication Systems ◽  
Return Loss ◽  
Mimo Antenna ◽  
Mimo Antennas ◽  
A Value ◽  
Bowtie Antenna ◽  
High Spectral Efficiency ◽  
Simulation Results ◽  
The Difference

Perkembangan antena radar semakin cepat dan beragam, salah satunya adalah antena MIMO (multiple output). Antena MIMO banyak digunakan untuk teknologi 5G  karena efisiensi spectral dan fekuensi yang tinggi. Antena MIMO juga merupakan suatu sistem yang menggunakan multi antena baik pengrim (Transmitter) maupun penerima (receiver) yang bisa mengatasi kelemahan pada sistem komunikasi wireless. Penelitian ini merancang sebuah antena mikrostrip MIMO 2X2 dengan menggunakan patch bowtie untuk mengkonversi frekuensi dari 2,4 GHz menjadi 5,5 GHz dengan menambahkan dual slot segiempat dan single slot segitiga. Hasil simulasi menunjukkan penambahan dual slot segiempat dan  single slot segitiga pada patch antena bowtie dapat menggeser frekuensi kerja dari 2,4 GHz menjadi 5,5 GHz. Dari hasil simulasi antena MIMO 2X2 didapatkan nilai return loss S11 sebesar -46,5 dB, insertion loss S21 sebesar -25,2 dB, bandwidth sebesar 192,2 MHz, VSWR sebesar 1,00 dan gain sebesar 3,11 dBi. Hasil dari pengukuran antena MIMO menunjukkan perbedaan dari parameter antena 1 dan 2. Hal ini disebabkan adanya ketidaksamaan ukuran dari antena 1 dan antena 2. Pengukuran  nilai return loss untuk antena 1 yaitu sebesar -22,32 dB dan -15,63 dB untuk antena 2. Hasil pengukuran insertion loss antena 1 dan 2 memiliki nilai yang sama yaitu -43,5 dB dan untuk lebar bandwidth memiliki perbedaan nilai yaitu 50 MHz untuk antena 1 dan 100 MHz untuk antena 2. Pengukuran nilai VSWR 1 didapatkan nilai sebesar 1,96, VSWR 2 sebesar 1,41. The development of radar antennas is getting faster and more diverse, one of which is the MIMO (multiple output) antenna. MIMO antennas are widely used for 5G technology because of their high spectral efficiency and frequency. MIMO antenna is also a system that uses multiple antennas, both transmitter and receiver which can solving the weaknesses in wireless communication systems. The research designed a 2X2 MIMO microstrip antenna using a patch bowtie to convert the frequency from 2.4 GHZ to 5.5 GHz by adding dual rectangular slots and single triangular slots. The simulation results show that the addition of dual rectangular slots and single triangular slots on the patch bowtie antenna can shift the working frequency from 2.4 GHz to 5.5 GHz. From the simulation results of MIMO 2X2 antenna, the return loss value of S11 is -46.5 dB, insertion loss S21 is -25.2 dB, bandwidth is 192.2 MHz, VSWR is 1.00 and gain is 3.11 dBi. The results of the MIMO antenna measurements show differences in the parameters of antennas 1 and 2. This is due to the difference size of antenna 1 and antenna 2. The measurement of the return loss value for antenna 1 is -22.32 dB and -15.63 dB for antenna 2 The results of the insertion loss measurements for antennas 1 and 2 have the same value, which is -43.5 dB and for the width of the bandwidth has a different value, 50 MHz for antenna 1 and 100 MHz for antenna 2. Measurement of the value of VSWR 1 obtained a value of 1.96, VSWR 2 is 1.41.

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