Hybrid metasurface loaded tri‐port compact antenna with gain enhancement and pattern diversity

Author(s):  
Asutosh Mohanty ◽  
Bikash Ranjan Behera ◽  
N Nasimuddin
2018 ◽  
Vol 7 (3.6) ◽  
pp. 45
Author(s):  
K M. Jyothsna ◽  
S Suganthi

This paper portrays the design of a compact square-shaped microstrip broadband antenna using ground slots. Polygon shaped slots are placed on the ground under the feed line for bandwidth improvement. Similarly, rectangular slots are placed on the square patch for gain enhancement. Effect of these slots on the performance of the antenna in terms of impedance bandwidth, gain and directivity are studied.  Results of simulation tests show that a ground slot with proper dimensions placed under the feed line can improve the impedance matching and hence increase the bandwidth without affecting much the performance of the antenna. This compact antenna of size 9.098 x 9.098 mm can be very useful for applications where size is a major constraint. Simple microstrip feed is used to feed the patch. The percentage bandwidth of this antenna is 75.57 %. 


2021 ◽  
Vol 36 (3) ◽  
pp. 266-272
Author(s):  
Raees Asif ◽  
Abdul Aziz ◽  
Muhammad Amjad ◽  
Majid Akhtar ◽  
Abuzar Baqir ◽  
...  

A novel and compact antenna element is analyzed and designed to achieve an efficient 4x4 MIMO antenna for a mobile phone at 3.5 GHz band for 5G communication. FTDT and FEM techniques are used to analyze and compare modeling accuracy of the proposed MIMO antenna. It has achieved a minimum isolation of 19.7dB between two antennas with radiation efficiency of 86%. The improved isolation and efficiency for the proposed MIMO antenna has been achieved without any decoupling structure between antennas, instead larger separation between elements due to compact size of the proposed element facilitated to achieve good performance. Pattern diversity is also achieved by arranging adjacent asymmetric antennas in reverse direction with each other. The envelope correlation coefficient (ECC) is less than 0.002 and Channel Capacity loss (CCL) is also less than 0.4 bps/Hz in the whole frequency band (3.36-3.66 GHz), which is suitable for 5G MIMO systems.


Author(s):  
Sharif Ahmed Qasem ◽  
Tan Kim Geok ◽  
Mohamad Yusoff Alias ◽  
Ferdous Hossain ◽  
Naif Alsowaidi

PIERS Online ◽  
2006 ◽  
Vol 2 (6) ◽  
pp. 601-604
Author(s):  
The-Nan Chang
Keyword(s):  

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