1. Antenna theory analysis and design;Balanis,2005
2. Investigation of multi layer probe-fed microstrip antenna for ultra wideband operation;Ghassemi,2007
3. Accurate modeling of multi-layer microstrip antennas;Hoorfar,1992
4. Single-layer single-patch wideband microstrip antenna;Huynh;Electronics Letters,1995
5. Antennas;Kraus,1988