the eror result in paper

i think that the resul in the paper"substrate for small patch antennas providing tunable miniaturization factors" is incorrect and the resonance frequancy occures in 150 MHz
what's your idea?

Better to discuss it with the author

Link to article:

http://www.eecs.umich.edu/u/s/saraba...E/01573806.pdf

The authors, Kamal Sarabandi, Hossein Mosallaei and Kevin Buell, can be reached here:

saraband@eecs.umich.edu
hosseinm@ece.neu.edu
K_Buell@raytheon.com