A commercial clam shell phone CAD model is used to numerically investigate the effect of a hand phantom on mobile phone antenna radiation performance. The simulation results show that the grip of the hand phantom is the most important parameter to antenna performance. The antenna is converted into a parameterized form, then optimized to achieve the targeted multi-band performance in real-usage conditions.
OFLI, ERDEM; LI, CHUNG-HUAN; CHAVANNES, NICOLAS; and KUSTER, NIELS (2008) "Analysis and Optimization of Mobile Phone Antenna Radiation Performance in the Presence of Head and Hand Phantoms," Turkish Journal of Electrical Engineering and Computer Sciences: Vol. 16: No. 1, Article 7. Available at: https://journals.tubitak.gov.tr/elektrik/vol16/iss1/7