1. First Report and Order, Federal Communications Commission (FCC), February 14, 2002
2. James, J.R., and Hall, P.S.: ‘Handbook of microstrip antennas’, (Peter Peregrinus, UK 1989)
3. Garg, R., Bhartia, P., Bahl, I., and Ittipiboon, A.: ‘Microstrip antenna design handbook’, (Artech House, Norwood, MA, USA 2001)
4. Microstrip antenna aperture-coupled to a microstripline