1. Johnson, R.C.: ‘Antenna engineering handbook’, 3rd(McGraw-Hill Education, Europe, UK 1993, 2007)
2. Kraus, J.D., and Marhefka, R.J.: ‘Antennas’, 3rd(McGraw-Hill, New York 1950, 2002)
3. Pozar, D.M.: ‘Microwave engineering’, 3rd(Wiley, New York 1998, 2004)
4. Printed dipoles electromagnetically coupled to coplanar waveguide for linear or circular polarisation