scholarly journals THE IMPROVEMENT OF ARRAY ANTENNA PERFORMANCE WITH THE IMPLEMENTATION OF AN ARTIFICIAL MAGNETIC CONDUCTOR (AMC) GROUND PLANE AND IN-PHASE SUPERSTRATE

2013 ◽  
Vol 140 ◽  
pp. 147-167 ◽  
Author(s):  
Raimi Dewan ◽  
Sharul Kamal Bin Abd Rahim ◽  
Siti Fatimah Ausordin ◽  
Teddy Purnamirza
Keyword(s):  
Ground Plane ◽  
Array Antenna ◽  
Magnetic Conductor ◽  
Artificial Magnetic Conductor ◽  
Antenna Performance

scholarly journals A Compact, Low-Profile Log-Periodic Meandered Dipole Array Antenna with an Artificial Magnetic Conductor

2018 ◽  
Vol 2018 ◽  
pp. 1-10 ◽  
Author(s):  
Oh Heon Kwon ◽  
Sungwoo Lee ◽  
Jong Min Lee ◽  
Keum Cheol Hwang
Keyword(s):  
Ground Plane ◽  
Array Antenna ◽  
Main Beam ◽  
Beam Direction ◽  
Magnetic Conductor ◽  
Artificial Magnetic Conductor ◽  
Line Configuration ◽  
Low Profile ◽  
Unit Cells ◽  
Meander Line

A compact and low-profile log-periodic meandered dipole array (LPMDA) antenna with an artificial magnetic conductor (AMC) is proposed. For compactness, a meander line configuration is implemented with dipole elements and optimized using a genetic algorithm (GA) to realize the LPMDA antenna. As a result, a size reduction of approximately 30% is achieved as compared to a conventional log-periodic dipole array antenna. To enhance the gain characteristics, the AMC ground plane configuration is realized with 9 × 9 unit cells for the LPMDA antenna. Two prototypes of the proposed LPMDA antennas with and without an AMC are fabricated and measured to verify its performance. The measured −10 dB reflection ratio bandwidths are 2.56 : 1 (0.85–2.18 GHz) and 2.34 : 1 (0.92–2.16 GHz) for the proposed LPMDA antennas with and without the AMC, respectively. The gain at the main beam direction within the operating frequency bandwidth is significantly improved from 3.94–7.17 dBi to 7.86–10.01 dBi by applying the AMC.

Wideband Planar Phased Array Antenna Based on Artificial Magnetic Conductor Surface

2020 ◽  
Vol 67 (10) ◽  
pp. 1909-1913 ◽  
Author(s):  
Suyang Shi ◽  
Peigang Yang ◽  
Wenjie Feng ◽  
Lei Zhou ◽  
Qing Lu ◽  
...  
Keyword(s):  
Phased Array ◽  
Array Antenna ◽  
Magnetic Conductor ◽  
Phased Array Antenna ◽  
Artificial Magnetic Conductor ◽  
Conductor Surface

Analysis of Wideband Antenna Performance over Dual Band Artificial Magnetic Conductor (AMC) Ground Plane

2015 ◽  
Vol 735 ◽  
pp. 273-277 ◽  
Author(s):  
Raimi Dewan ◽  
M.K.A. Rahim ◽  
Mohamad Rijal Hamid ◽  
M.F.M. Yusoff
Keyword(s):  
Coplanar Waveguide ◽  
Ground Plane ◽  
Surface Current ◽  
Dual Band ◽  
Magnetic Conductor ◽  
Wideband Antenna ◽  
Antenna Performance ◽  
Perfect Magnetic Conductor ◽  
Additional Resonance ◽  
Unit Cells

A Coplanar Waveguide (CPW) wideband antenna operates from 2.69 GH to 6.27 GHz which act as reference antenna (RA) has been designed. A Dual Band AMC (DBAMC) unit cells have been proposed to operate at 2.45 GHz and 5.8 GHz. AMC is a metamaterial which mimics the behavior of zero reflection phase of Perfect Magnetic Conductor (PMC) at resonance frequency which not naturally existed in nature. Subsequently the antenna is incorporated with AMC unit cell, herein referred as Antenna with Dual Band AMC (ADBAMC). The DBAMC succesfully excites additional resonance at 2.45 GHz outside the initial operating range of standalone CPW wideband antenna. Incorporation of DBAMC to antenna achieves back lobe suppression at 2.45 GHz and 5.8 GHz. The overall average gain of AMC incorporated antenna is improved from 2.69 to 6.29 GHz as opposed to the standalone reference CPW wideband antenna. Study of surface current is also presented and discussed.

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