Design of Reconfigurable Parasitic Antenna for Single RF Chain MIMO Systems

In recent years parasitic antenna play major role in
MIMO systems because of their gain and spectral efficiency. In this
paper, single RF chain MIMO transmitter is designed using
reconfigurable parasitic antenna. The Spatial Modulation (SM) is a
recently proposed scheme in MIMO scenario which activates only
one antenna at a time. The SM entirely avoids ICI and IAS, and only
requires a single RF chain at the transmitter. This would switch ON a
single transmit-antenna for data transmission while all the other
antennas are kept silent. The purpose of the parasitic elements is to
change the radiation pattern of the radio waves which is emitted from
the driven element and directing them in one direction and hence
introduces transmit diversity. Diode is connect between the patch and
ground by changing its state (ON and OFF) the parasitic element act
as reflector and director and also capable of steering azimuth and
elevation angle. This can be achieved by changing the input
impedance of each parasitic element through single RF chain. The
switching of diode would select the single parasitic antenna for
spatial modulation. This antenna is expected to achieve maximum
gain with desired efficiency.

• C. Arunachalaperumal
• B. Chandru
• J. M. Mathana

• MIMO system
• single RF chain
• Parasitic Antenna.

[1] Kalis. A. et al. (eds.), (2014), Parasitic Antenna Arrays for Wireless
MIMO Systems, DOI 10.1007/978-1-4614-7999-4 2, © Springer
Science+Business Media New York.
[2] Taconic manual: TLY family of low loss materials, www.taconicadd.
com/pdf/tly.pdf
[3] Constantine. A.B. (2002), Antenna Theory Analysis and Design.
NewYork, NY, USA: Wiley.
[4] Bhartia. P, I. Bahl and A.I tipiboon, (2000) “Microstrip antenna design
handbook”, Artech House, Boston – London.
[5] Fei. Y, Y. Fan, B.K. Lau, J. Thompson, (2008), “Optimal single-port
matching impedance for capacity maximization in compact mimo
arrays”. IEEE Trans. Antennas Propag. 56(11), 3566–3575.
[6] Alrabadi. O, C. Papadias, A. Kalis, N. Marchetti, R. Prasad, (2009)
Spatial multiplexing via antenna switching. IEEE Commun. Lett. 13(8),
594–596.
[7] Roscoe. A, R. Perrott, (1994), “Large finite array analysis using infinite
array data”. IEEE Trans. Antennas Propag. 42(7), 983–992.