An experimental setup for measuring the tuning time of an optically pumped frequency reconfigurable antenna system

2012 ◽  
Author(s):  
Y. Tawk ◽  
S. Hemmady ◽  
C. G. Christodoulou ◽  
J. Costantine
Keyword(s):  
Antenna System ◽  
Reconfigurable Antenna ◽  
Experimental Setup ◽  
Optically Pumped ◽  
Tuning Time ◽  
Frequency Reconfigurable Antenna

scholarly journals Frequency Reconfigurable Antenna using PIN Diodes

2019 ◽  
Vol 9 (1S5) ◽  
pp. 66-70
Keyword(s):  
Antenna System ◽  
Reconfigurable Antenna ◽  
Multiple Frequency ◽  
Pin Diodes ◽  
Wireless Applications ◽  
System A ◽  
Ansoft Hfss ◽  
System Requirements ◽  
Simulation Results ◽  
Frequency Reconfigurable Antenna

With the increase in wireless applications, there is a need for compact antennas that adapt their behavior with changing system requirements or environmental conditions. Here adapt implies the antenna should be able to alter operating frequencies, impedance bandwidths, polarizations, radiation patterns. These all features are provided by the “Reconfigurable antenna”. The important feature of reconfigurable antenna is that, they provide the same throughput as a multi-antenna system. A compact frequency reconfigurable antenna is designed with the aid of Ansoft HFSS that provides multiple frequency bands. This is achieved by using electrical switches such as PIN diodes. Depending on state of switches different operating frequencies are obtained. The switches placed on the antenna elements are powered wirelessly by the antenna itself. The design, geometries and simulation results of a frequency reconfigurable antenna are presented in this report. Further advancements are to be done for this structure to achieve polarization and radiation pattern re-configurability.

Optically Pumped Frequency Reconfigurable Antenna Design

2010 ◽  
Vol 9 ◽  
pp. 280-283 ◽  
Author(s):  
Y. Tawk ◽  
Alex R. Albrecht ◽  
S. Hemmady ◽  
Gunny Balakrishnan ◽  
Christos G. Christodoulou
Keyword(s):  
Antenna Design ◽  
Reconfigurable Antenna ◽  
Optically Pumped ◽  
Frequency Reconfigurable Antenna

Demonstration of a Cognitive Radio Front End Using an Optically Pumped Reconfigurable Antenna System (OPRAS)

2012 ◽  
Vol 60 (2) ◽  
pp. 1075-1083 ◽  
Author(s):  
Youssef Tawk ◽  
Joseph Costantine ◽  
Sameer Hemmady ◽  
Ganesh Balakrishnan ◽  
Keith Avery ◽  
...  
Keyword(s):  
Cognitive Radio ◽  
Antenna System ◽  
Reconfigurable Antenna ◽  
Optically Pumped ◽  
Front End

scholarly journals A Pine Shaped Dual-Band Frequency Reconfigurable Antenna

2021 ◽  
pp. 42-52
Author(s):  
Shikha Sahu ◽  
Harish Chandra Mohanta
Keyword(s):  
Wireless Communication ◽  
Communication Systems ◽  
Satellite Communication ◽  
Antenna System ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Rf Switches ◽  
Band Frequency ◽  
High Frequency Structure Simulator ◽  
Frequency Reconfigurable Antenna

In recent years reconfigurable antennas have attracted a lot of attention in modern wireless communication systems. In satellite communication and ECM system, there has always been a continuous demand for smaller size, lighter weight antenna system that has properties to accomplish selectivity in frequency, bandwidth, polarization and gain. A frequency reconfigurable antenna is proposed for wireless communication. We can achieve Frequency reconfiguration by modifying physical or electrical dimensions of the antenna using RF-switches, impedance loading or tunable material. The design and simulation of the proposed antennas are done using ANSYS high-frequency structure simulator (HFSS) version-19. The proposed antenna is taken as a triangular shape whose length and width are 50mm and 25mm respectively. Here reconfigurability is achieved by RF switches placed in the radiator. The antenna analysis is done by taking different conditions of the switch. Total four switching condition is simulated and for each case, distinctive resonating frequencies are accomplished with acceptable reflection coefficient. The frequency bands of the antenna are varied from 2.12 GHz to 5.27 GHz. This antenna covers S-band and C band. After simulating the design the gain and efficiency of the antenna are verified successfully. Antenna fabrication and measurement of different parameters will be done in future. A comparison of the measured result will be analyzed with some existing antenna outcomes.

scholarly journals An Autonomous Frequency Reconfigurable Antenna Using Slotline Open-Loop Resonators

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Geriki Polaiah ◽  
Krishnamoorthy Kandasamy ◽  
Muralidhar Kulkarni
Keyword(s):  
Open Loop ◽  
Reconfigurable Antenna ◽  
Frequency Reconfigurable Antenna
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