I am antenna researcher . I have good experience using HFSS and CST. My work involves:• High gain Broad-band planar arrays. • Low Profile Reflectarray (CP and LP). • Folded Reflectarray. • Scanning Reflectarray. • Broad-band CP arrays (DRA and low-profile structures). • Wide-band Flat Gain Transmitarray. • Ridge Gap Waveguides. • Printed Ridge Gap Structures. • Slim THz Lens. • Artificial Flat Lens. • Periodic Structures. • Liquid Crystal Antennas. • Passive RFID Tags. • Dual Polarized OMT Horns. • Flat Panel Antennas.