scholarly journals DESIGN OF 28 GHZ MICROSTRIP MIMO ANTENNAS FOR FUTURE 5G APPLICATIONS

SINERGI ◽  
2018 ◽  
Vol 22 (3) ◽  
pp. 149 ◽  
Author(s):  
Yusnita Rahayu ◽  
Luthfi Afif ◽  
Muhammad Rizki Radhelan ◽  
I. Yasri ◽  
Feri Candra
Keyword(s):  
Microstrip Line ◽  
Return Loss ◽  
High Gain ◽  
Directional Pattern ◽  
Federal Communications Commission ◽  
System Capacity ◽  
Mimo Antenna ◽  
Mimo Antennas ◽  
Pattern Comparison ◽  
The U.S

The 5G system requires more significant system capacity, more full bandwidth, and higher frequency. One type of antenna that can be used to increase the channel capacity is microstrip MIMO antenna. The Federal Communications Commission of the U.S. has recently designated the frequency band from 27.5 to 28.35 GHz for 5G applications. In this paper, the design of 28 GHz microstrip MIMO antenna for future 5G applications was proposed. The antenna was designed by using RT Duroid 5880 substrate with a dielectric constant of 2.2 and the loss tangent of 0.0009. The antenna operated from 27.10 GHz to 28.88 GHz with 1.78 GHz (6.35%) of bandwidth. The antenna consisted of four elements feeding by a microstrip line. Based on the simulated results, the high gain of 14.8 dBi is obtained with a linear directional pattern. Comparison performance regarding gain, return loss, VSWR and bandwidth are also presented for single, two and four elements.  It is shown that the increasing number of elements of antenna increased the gain and the return loss. The antenna meets the 5G requirements.

scholarly journals Design and analysis of square shaped serrated patch antenna for ultra-wideband applications with single rejection band

2017 ◽  
Vol 7 (1.1) ◽  
pp. 525
Author(s):  
P Saleem Akram ◽  
B T P Madhav ◽  
G Jeevana Sravya ◽  
V Sudhakar ◽  
G Lakshmi Sirisha ◽  
...  
Keyword(s):  
Comparative Analysis ◽  
Patch Antenna ◽  
Microstrip Line ◽  
Return Loss ◽  
High Gain ◽  
Ultra Wideband ◽  
Bandwidth Enhancement ◽  
Band Region ◽  
Rejection Band

This article studies about the design and analysis of serrated patch antenna with a slot at the ground with microstrip line feed. Comparative analysis has been carried in five and ten serrated patches at top and side edges of the square patch. All design iterations have been carried out using commercially equipped tool HFSS 13. For bandwidth enhancement a slot has been placed at the ground in all iterations in common, later the return loss and gain have been analyzed and compared for all models. Finally, the proposed modal consists of ten serrations at the three edges of the square patch where it works on the ultrawide band region with high gain when compared to all models. The proposed antenna has its applications at WiMAX, WLAN 802.11, LTE 42/43 bands and works in the region of ultrawide band(3.1GHz-10.6GHz).and having rejection at 5-6GHz

scholarly journals Electromagnetic Soft Surface (EMSS) Integrated MIMO Antennas With Reduced Mutual Coupling And Cross-Polarization Radiation

2021 ◽  
Author(s):  
Swati Bhattacharjee ◽  
Santimoy Mandal ◽  
Chandan Kumar Ghosh
Keyword(s):  
Microstrip Antenna ◽  
Mutual Coupling ◽  
Return Loss ◽  
Satellite Communication ◽  
Antenna System ◽  
Cross Polarization ◽  
Mimo Antenna ◽  
Mimo Antennas ◽  
At Resonance ◽  
Soft Surface

Abstract For closely spaced microstrip antenna elements, Mutual Coupling (MC) is an inevitable phenomenon which degrades antenna performances like gain, radiation pattern, return loss, radiation efficiency etc. Lot of works have been done on the reduction of MC and published the results in the open literatures. This paper presents an approach to suppress MC between two closely spaced microstrip radiators. This is achieved by inserting properly designed EMSS structure between the radiating elements. This EMSS acts as an electrical wall between two rectangular patches and reduces mutual coupling up to 50 dB at resonance frequency of 4.35 GHz. In this attempt, Cross Polarization (XP) reduction of 12.5dB has also been achieved with a gain 5.40dBi for the proposed antenna. The centre to centre spacing between the antenna elements is taken as 22.1mm (0.32λ).The proposed MIMO antenna system can be used for satellite communication and radar system.

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.

scholarly journals Compact MIMO Slots Antenna Design with Different Bands and High Isolation for 5G Smartphone Applications

2020 ◽  
Vol 16 (4(Suppl.)) ◽  
pp. 1093
Author(s):  
Ayman mohammed Ibrahim
Keyword(s):  
Correlation Coefficient ◽  
Return Loss ◽  
Antenna Design ◽  
Smartphone Applications ◽  
Mimo Antenna ◽  
Mimo Antennas ◽  
Chinese Markets ◽  
High Degree ◽  
Degree Of Isolation ◽  
Envelope Correlation

 In this paper, two elements of the multi-input multi-output (MIMO) antenna had been used to study the five (3.1-3.55GHz and 3.7-4.2GHz), (3.4-4.7 GHz), (3.4-3.8GHz) and (3.6-4.2GHz) 5G bands of smartphone applications that is to be introduced to the respective US, Korea, (Europe and China) and Japan markets. With a proposed dimension of 26 × 46 × 0.8 mm3, the medium-structured and small-sized MIMO antenna was not only found to have demonstrated a high degree of isolation and efficiency, it had also exhibited a lower level of envelope correlation coefficient and return loss, which are well-suited for the 5G bands application. From the fabrication of an inexpensive FR4 substrate with a 0.8 mm thickness level, a loss tangent of 0.035 and a dielectric constant of 4.3, the proposed MIMO antennas that had been simulated under the five different band coverage were discovered to have demonstrated a respective isolation level of about 14dB, 12dB, 21.5dB, 19dB and 20dB under a -10dB impendence bandwidth. In the measurement and fabrication outcomes that were derived from the use of the prototype MIMO in the (3.4-3.8) band of the Europe and Chinese markets, the proposed MIMO was thus found to have produced a better performance in terms of efficiency, isolation, and envelope correlation coefficient (ECC).

scholarly journals Design of an Ultra-Wideband Microstrip-to-Slotline Transition on Low-Permittivity Substrate

Electronics ◽  
2020 ◽  
Vol 9 (8) ◽  
pp. 1329
Author(s):  
Jung Seok Lee ◽  
Gwan Hui Lee ◽  
Wahab Mohyuddin ◽  
Hyun Chul Choi ◽  
Kang Wook Kim
Keyword(s):  
Microstrip Line ◽  
Return Loss ◽  
Analytical Formula ◽  
Parameter Tuning ◽  
Ultra Wideband ◽  
Design Parameters ◽  
Analytical Line ◽  
Cross Sectional ◽  
Analysis And Design ◽  
Low Permittivity

Analysis and design of an ultra-wideband microstrip-to-slotline transition on a low permittivity substrate is presented. Cross-sectional structures along the proposed transition are analyzed using conformal mapping assuming quasi-TEM modes, attaining one analytical line impedance formula with varying design parameters. Although the slotline is a non-TEM transmission line, the transitional structures are configured to have quasi-TEM modes before forming into the slotline. The line impedance is optimally tapered using the Klopfenstein taper, and the electric field shapes are smoothly transformed from microstrip line to slotline. The analytical formula is accurate within 5% difference, and the final transition configuration can be designed without parameter tuning. The implemented microstrip-to-slotline transition possesses insertion loss of less than 1.5 dB per transition and return loss of more than 10 dB from 4.4 to over 40 GHz.

A dual-band crossover using cross-shaped microstrip line for small and large band ratios

2017 ◽  
Vol 9 (8) ◽  
pp. 1629-1635 ◽  
Author(s):  
Idury Satya Krishna ◽  
Rusan Kumar Barik ◽  
S. S. Karthikeyan
Keyword(s):  
Insertion Loss ◽  
Matrix Method ◽  
Microstrip Line ◽  
Return Loss ◽  
Dual Band ◽  
Band Ratios ◽  
Form Design ◽  
Frequency Ratios ◽  
Novel Design ◽  
Large Frequency

A novel design of planar dual-band microstrip crossover operating at small and large frequency ratios is presented. These features of the proposed dual-band crossover are achieved by a cross-shaped transmission line. To obtain the dual-band characteristics, the required closed form design formulas are computed using the ABCD matrix method. Based on the design formulas, the realizable small and large band ratios are calculated as 1.65–2.14 and 4.1–8.76, respectively. To validate the computed band ratios, three examples of dual-band crossovers are presented. Finally, two prototypes of dual-band crossover working at smaller and larger frequency ratios are fabricated and tested. The fabricated dual-band crossovers exhibit good return loss and isolation of over 20 dB with minimal insertion loss.

scholarly journals Minimization of Mutual Coupling Using Neutralization Line Technique for 2.4 GHz Wireless Applications

2015 ◽  
Vol 6 (3) ◽  
pp. 1-15 ◽  
Author(s):  
Wan Noor Najwa Wan Marzudi ◽  
Zuhairiah Zainal Abidin ◽  
Siti Zarina Mohd Muji ◽  
Yue Ma ◽  
Raed A. Abd-Alhameed
Keyword(s):  
Reflection Coefficient ◽  
Mutual Coupling ◽  
Ground Plane ◽  
Multiple Input Multiple Output ◽  
Impedance Bandwidth ◽  
Mimo Antenna ◽  
Mimo Antennas ◽  
Wireless Applications ◽  
Input Multiple Output ◽  
Neutralization Line

This paper presented a planar printed multiple-input-multiple-output (MIMO) antenna with a dimension of 100 x 45 mm2. It composed of two crescent shaped radiators placed symmetrically with respect to the ground plane. Neutralization line applied to suppress mutual coupling. The proposed antenna examined both theoretically and experimentally, which achieves an impedance bandwidth of 18.67% (over 2.04-2.46 GHz) with a reflection coefficient < -10 dB and mutual coupling minimization of < -20 dB. An evaluation of MIMO antennas is presented, with analysis of correlation coefficient, total active reflection coefficient (TARC), capacity loss and channel capacity. These characteristics indicate that the proposed antenna suitable for some wireless applications.

scholarly journals Bandwidth Enhancement of Tri-band Rectangular Dielectric Resonator Antenna using Novel Offset Feed for WLAN/WIMAX Applications

2020 ◽  
Vol 9 (5) ◽  
pp. 2305-2308
Keyword(s):  
Dielectric Resonator ◽  
Microstrip Line ◽  
Return Loss ◽  
Radiation Efficiency ◽  
Antenna Design ◽  
Design Parameters ◽  
Dielectric Resonator Antenna ◽  
Bandwidth Enhancement ◽  
Frequency Bands ◽  
Rectangular Dielectric Resonator Antenna

In this article, a novel offset microstrip line feed Rectangular Dielectric Resonator Antenna is used for bandwidth enhancement. The parameters such as Bandwidth, Return Loss and Radiation efficiency are improved in the proposed antenna. A comparison is also shown for the proposed feed structure with and without conformal strips. The improvement in the bandwidth is observed from 25% to 65% by optimizing the antenna design parameters. It works in three frequency bands, that is, 2.03-3.69 GHz, 3.86-7.26 GHz, and 7.32-9.26 GHz. The proposed antenna is appropriate for WIMAX/WLAN applications.

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).

scholarly journals High gain 5G MIMO antenna for mobile base station

2019 ◽  
Vol 9 (1) ◽  
pp. 468 ◽  
Author(s):  
Yusnita Rahayu ◽  
Indah Permata Sari ◽  
Dara Incam Ramadhan ◽  
Razali Ngah
Keyword(s):  
Linear Array ◽  
Multiple Input Multiple Output ◽  
High Gain ◽  
Base Station ◽  
Impedance Bandwidth ◽  
Single Element ◽  
Mimo Antenna ◽  
Input Multiple Output ◽  
Mobile Base Station ◽  
Mobile Base

This article presented a millimeter wave antenna which operated at 38 GHz for 5G mobile base station. The MIMO (Multiple Input Multiple Output) antenna consisted of 1x10 linear array configurations. The proposed antenna’s size was 88 x 98 mm^2  and printed on 1.575 mm-thick Rogers Duroid 5880 subsrate with dielectric constant of ε_r= 2.2 and loss tangent (tanδ) of 0.0009. The antenna array covered along the azimuth plane to provide the coverage to the users in omnidirection. The simulated results showed that the single element antenna had the reflection coefficient (S11) of -59 dB, less than -10 dB in the frequency range of 35.5 - 39.6 GHz. More than 4.1 GHz of impedance bandwidth was obtained. The gain of the antenna linear array was 17.8 dBi while the suppression of the side lobes was -2.7 dB.  It showed a high array gain throughout the impedance bandwidth with overall of VSWR were below 1.0646. It designed using CST microwave studio.

Sign in / Sign up

Export Citation Format

Share Document