DocumentCode :
1266877
Title :
An Electronically Reconfigurable Microstrip Antenna With Switchable Slots for Polarization Diversity
Author :
Nishamol, M.S. ; Sarin, V.P. ; Tony, D. ; Aanandan, C.K. ; Mohanan, P. ; Vasudevan, K.
Author_Institution :
Dept. of Electron., Cochin Univ. of Sci. & Technol., Cochin, India
Volume :
59
Issue :
9
fYear :
2011
Firstpage :
3424
Lastpage :
3427
Abstract :
An electronically reconfigurable microstrip antenna with circular and linear polarization switching is presented. The prototype fabricated on a substrate of dielectric constant (εr) 4.4 and height (h) 1.6 mm is fed by a proximity feed fabricated using the same substrate. By controlling the bias voltage of two PIN diodes, the polarization of the antenna can be switched between three states; two states for linear polarization (horizontal and vertical) and one state for circular polarization (RHCP). Simulation and experimental results show that the proposed antenna has a cross polar level better than 10 dB in the linear polarization state and 18 MHz axial ratio bandwidth in the circular polarization state. The frequency and polarization diversities of this design could potentially improve the reliability of wireless communication systems.
Keywords :
antenna feeds; microstrip antennas; p-i-n diodes; permittivity; reliability; PIN diodes; circular polarization switching; dielectric constant; electronically reconfigurable microstrip antenna; linear polarization switching; polarization diversity; proximity feed fabricated; reliability; switchable slots; Antenna measurements; Microstrip antennas; PIN photodiodes; Polarization; Resonant frequency; Switches; PIN diodes; Patch antenna; polarization diversity; reconfigurable; switchable slots;
fLanguage :
English
Journal_Title :
Antennas and Propagation, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-926X
Type :
jour
DOI :
10.1109/TAP.2011.2161446
Filename :
5944954
Link To Document :
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