scholarly journals Frequency and Pattern Reconfigurable Antenna for Emerging Wireless Communication Systems

Electronics ◽  
2019 ◽  
Vol 8 (4) ◽  
pp. 407 ◽  
Author(s):  
Amjad Iqbal ◽  
Amor Smida ◽  
Nazih Mallat ◽  
Ridha Ghayoula ◽  
Issa Elfergani ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Wireless Communication Systems ◽  
Reconfigurable Antenna ◽  
Minimal Size ◽  
Beam Switching ◽  
Frequency Shifting

A printed and minimal size antenna having the functionality of frequency shifting as well as pattern reconfigurability is presented in this work. The antenna proposed in this work consists of three switches. Switch 1 is a lumped switch that controls the operating bands of the antenna. Switch 2 and Switch 3 controls the beam switching of the antenna. When the Switch 1 is ON, the proposed antenna operates at 3.1 GHz and 6.8 GHz, covering the 2.5–4.2 GHz and 6.2–7.4 GHz bands, respectively. When Switch 1 is OFF, the antenna operates only at 3.1 GHz covering the 2.5–4.2 GHz band. The desired beam from the antenna can be obtained by adjusting the ON and OFF states of Switches 2 and 3. Unique beams can be obtained by different combination of ON and OFF states of the Switches 2 and 3. A gain greater than 3.7 dBi is obtained for all four cases.

scholarly journals Pattern Reconfigurable Antenna for VANET, Wi-Fi, and WiMAX Wireless Communication Systems

2021 ◽  
Vol 2021 ◽  
pp. 1-12
Author(s):  
Rahmani Faouzi ◽  
Amar Touhami Naima ◽  
BelbachirKchairi Abdelmounaim ◽  
Aknin Noura ◽  
Taher Nihade
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Equivalent Circuit Model ◽  
Coaxial Cable ◽  
Wireless Communication Systems ◽  
Reconfigurable Antenna ◽  
Antenna Characteristic ◽  
Beam Switching ◽  
Theoretical Results ◽  
Good Agreement

This work presents the design and analysis of a beam switching antenna for VANET, Wi-Fi, and WiMAX wireless communication systems. The proposed reconfigurable antenna is powered by a coaxial cable and consists of a circular patch, six fish-shaped radiating elements, and a circular planar ground. The antenna was constructed on a Rogers RT5880 substrate. Its dimensions are as follows: 0.81λ0 × 0.81λ0 × 0.03λ0. It performs six reconfigurable operating states, at the same frequency, by controlling the activation and deactivation of six PIN diodes to change the beam’s direction. A theoretical equivalent circuit model of the antenna is extracted. A progressive analysis of improving the antenna characteristic performances is provided. The bandwidth of the proposed antenna is 9.07% (measured), 9.62% (simulated), and 9.31% (theoretical). The designed antenna has a maximum gain of 9.57 dB for all pattern states and a superior efficiency ratio from 85% to 95% over the operating range (5.54 GHz–6.10 GHz). The proposed reconfigurable antenna is fabricated. Measured, simulated, and theoretical results are given and show good agreement, including reflection coefficient (S11) and radiation patterns.

Reconfigurable Antenna for Future Wireless Communication Systems

2007 ◽  
Vol 42 (3) ◽  
pp. 405-430 ◽  
Author(s):  
E. Del Re ◽  
S. Morosi ◽  
D. Marabissi ◽  
L. Mucchi ◽  
L. Pierucci ◽  
...  
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Wireless Communication Systems ◽  
Reconfigurable Antenna

scholarly journals Frequency Reconfigurable Antenna Array Using Defected Ground Structure for Outdoor Wireless Communication Systems

2019 ◽  
Vol 9 (1) ◽  
pp. 33
Author(s):  
Mohd Aziz Aris ◽  
Mohd Tarmizi Ali ◽  
Nurulhuda Abd Rahman ◽  
Idnin Pasya Ibrahim
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Array Antenna ◽  
Wireless Communication Systems ◽  
Reconfigurable Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Resonant Frequencies ◽  
Frequency Reconfigurable Antenna ◽  
Good Agreement

This paper proposes frequency reconfigurable antenna for outdoor wireless communication systems, the 4 x 4 array antenna has designed at two resonant frequencies 7.5 GHz and 8.85 GHz. The periodic dumbbell geometry etched on the ground layer newly proposed with dual functionality, to control desired frequency and to couple radiating patches at the top substrate with feeding line at the bottom substrate. The reconfigurability of the patch antenna is controlled by utilizing the copper pad of the feeding network with OPEN and SHORT states. The reconfigurable antenna has been simulated and optimized using Computer Simulation Technology (CST) to get the desired responds. The good agreement between simulation and measured results indicates that the frequency reconfigurable patch array antenna using Periodic Dumbbell Slotted Aperture Structure (FRPDSA) is feasible to support outdoor wireless communication systems.

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