Dual‐band CPW fed MIMO antenna with polarization diversity and improved gain

2020 ◽  
Vol 30 (4) ◽  
Author(s):  
Sk Nurul Islam ◽  
Santanu Das
Keyword(s):  
Dual Band ◽  
Polarization Diversity ◽  
Mimo Antenna

Compact ACS-Fed UWB MIMO Antenna with Dual Band Notches

2021 ◽  
Vol 36 (1) ◽  
pp. 55-60
Author(s):  
Qin Li ◽  
Yufa Sun ◽  
Hongyu Fang
Keyword(s):  
Correlation Coefficient ◽  
Channel Capacity ◽  
Simple Structure ◽  
Dual Band ◽  
Polarization Diversity ◽  
Mimo Antenna ◽  
Compact Size ◽  
Simulation Results ◽  
Communication Equipment

In order to improve the channel capacity of communication equipment and reduce the size of antenna, an asymmetric coplanar strip (ACS) fed four-element UWB MIMO antenna with dual band notches is proposed in this paper. The antenna has a simple structure and a compact size of 37×37 mm². The antenna consists of four modifled staircase-shaped radiation elements and four floor on the same side. The antenna elements are placed vertically without additional decoupling structure, and the isolation less than -15 dB in the working bandwidth of 2.9-10.6 GHz can be obtained by using polarization diversity. In addition, the antenna has the notched characteristic of WiMAX and WLAN band. The antenna has good gain and low envelop correlation coefficient (ECC), and the simulation results agree with the measured results, which indicates that the antenna is suitable for UWB system.

A new two-element MIMO antenna system for cognitive radio applications

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
D. Srikar ◽  
Sundru Anuradha
Keyword(s):  
Cognitive Radio ◽  
Design Methodology ◽  
Antenna System ◽  
Utilization Efficiency ◽  
Dual Band ◽  
Polarization Diversity ◽  
Spectrum Utilization ◽  
Content Type ◽  
Mimo Antenna ◽  
Dual Band Antennas

Purpose This study aims to propose a two-element multi-input-multi-output (MIMO) antenna for cognitive radio MIMO applications to avoid the complexities involved in reconfigurable antennas and improve the spectrum utilization efficiency. Design/methodology/approach The proposed MIMO antenna system comprises a wideband antenna that operates at 2 GHz–12 GHz for sensing the spectrum and four pairs of antennas for communication, which are single and dual-band antennas. Each pair of antennas meant for communication consists of two similar antennas. Moreover, the antennas meant for communication cover 93% of the bandwidth of the sensing antenna. Findings The first pair of antennas accessible at ports P2 and P6 and the second pair of antennas accessible at ports P4 and P8, which are dual-band antennas, operate at 3.05 GHz–3.85 GHz, 5.8 GHz–8 GHz and 2.05 GHz–2.55 GHz, 4.7 GHz–6.1 GHz, respectively. While the third pair of antennas accessible at ports P3 and P7 and the fourth pair of antennas accessible at ports P5 and P9 are single-band antennas and operate at 3.85 GHz–4.7 GHz and 8 GHz–11 GHz, respectively. Minimum isolations of 20 dB and 15 dB are attained between every two similar antennas for communication and between the sensing antenna and the antennas meant for communication, respectively. The correctness of the proposed antenna is verified with a fine match between the results obtained from simulations and measurements. Originality/value The proposed MIMO antenna possesses salient features, such as polarization diversity and performing a maximum of four communication tasks when all the white spaces are detected.

scholarly journals SWB MIMO Antenna with Dual Band Rejection Characteristics and Polarization Diversity for UWB Applications

2021 ◽  
Author(s):  
Faezeh Bahmanzadeh ◽  
Farzad Mohajeri
Keyword(s):  
Communication Systems ◽  
Coplanar Waveguide ◽  
Impedance Matching ◽  
Wide Band ◽  
Ring Resonators ◽  
Dual Band ◽  
Special Technique ◽  
Polarization Diversity ◽  
Mimo Antenna ◽  
Half Wavelength

Abstract In this paper a super wide band 2-element MIMO antenna with dual band-notched characteristics and high isolation is presented for use in broadband polarization diversity communication systems. Total dimensions of the fabricated antenna is 34 × 60 mm2 and achieves a super wide impedance matching of more than 15 GHz from 2.3 to 18 GHz due to the simulated and measured results which covers L, S, C, X, Ku bands and some parts of K band with two notched frequency bands around 3.1 – 3.7 GHz for WiMAX and 5.1 – 5.8 GHz for WLAN which realized by etching two half-wavelength elliptic single complementary split-ring resonators (ESCSRRs) of different dimensions on the radiating patches. This antenna comprises two identical elements which placed orthogonally to each other and fed by two 50Ω coplanar waveguide (CPW) lines, therefore an isolation of more than 20 dB is obtained autonomously without utilizing any other special technique. Diversity performance in terms of envelop correlation coefficient (ECC< 0.0035), multiplexing efficiency (ηmux > -1 dB) and diversity gain (DG > 9.99 dB) are also calculated, showing satisfactory MIMO characteristics.

Two-port dual-band circularly polarized dielectric resonator-based MIMO antenna with polarization diversity

2020 ◽  
Vol 40 (7) ◽  
pp. 463-478
Author(s):  
Gagandeep Bharti ◽  
Dharmendra Kumar ◽  
Anil Kumar Gautam ◽  
Anand Sharma
Keyword(s):  
Dielectric Resonator ◽  
Dual Band ◽  
Polarization Diversity ◽  
Circularly Polarized ◽  
Mimo Antenna

scholarly journals A 2×2 DUAL-BAND MIMO ANTENNA WITH POLARIZATION DIVERSITY FOR WIRELESS APPLICATIONS

2016 ◽  
Vol 61 ◽  
pp. 91-103 ◽  
Author(s):  
Leeladhar Malviya ◽  
Rajib Kumar Panigrahi ◽  
Machavaram Venkata Kartikeyan
Keyword(s):  
Dual Band ◽  
Polarization Diversity ◽  
Mimo Antenna ◽  
Wireless Applications

EBG Based Compact Design of Dual Band UWB MIMO Antenna Operating in Ku/K Band

2020 ◽  
Vol 10 (4) ◽  
pp. 268
Author(s):  
Subuh Pramono ◽  
Muhammad Hamka Ibrahim ◽  
Josaphat Tetuko Sri Sumantyo
Keyword(s):  
Dual Band ◽  
Mimo Antenna ◽  
Compact Design ◽  
K Band

scholarly journals COMPACT DUAL BAND-NOTCHED UWB MIMO ANTENNA FOR USB DONGLE APPLICATION WITH PATTERN DIVERSITY CHARACTERISTICS

2018 ◽  
Vol 87 ◽  
pp. 87-96 ◽  
Author(s):  
Deepika Sipal ◽  
Mahesh Pandurang Abegaonkar ◽  
Shiban Kishen Koul
Keyword(s):  
Dual Band ◽  
Mimo Antenna ◽  
Pattern Diversity
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