oshin
Newbie level 1
hello.. Am designing antenna in HFSS a circular patch UWB wearable antenna with two slots (tilted square and circular) operating frequency i have considered is 5GHz ..taking substrate material as flannel fabric/jeans having dielectric constant of 1.7 and thickness of 1mm, L=30mm W=30mm. Radius of patch i have taken as 13.48mm for 5GHz freq ..Am getting resonant freq as 5.2GHz, VSWR below 1.5 ,impedence matching also happening..but am feeling difficulty regarding gain because am getting negative gain .please help me how to increase the gain of this antenna..