Title :
Investigation of radiation characteristics of a PIFA-based semi-populated handset model for LTE B13
Author :
Wahidi, Ashar J. ; Abhari, Ramesh ; Ali, Shirook M.
Author_Institution :
Dept. of Electr. & Comput. Eng., McGill Univ., Montreal, QC, Canada
Abstract :
This paper discusses the effects of internal components on the radiation characteristics of two antennas in a semi-populated model of a mobile handset operating at LTE Band-13 (746-787) MHz. The antennas are both PIFAs that are designed to work at the uplink and downlink bands. The mobile handset is first simulated as a simple box made of printed circuit boards containing the two PIFAs only. Next, models of a battery and LCD screen are included. This addition of the semi-populated environment degrades the radiation efficiency of the two antenna system by 11%. The mutual coupling is also noted to decrease by 0.7 dB. Simulations of the antenna system with different feeding phase reveal that with the proper phase difference a significant increase in the antenna efficiency can be achieved.
Keywords :
Long Term Evolution; antenna radiation patterns; liquid crystal displays; mobile handsets; LCD screen; LTE B13; PIFA-based semipopulated handset model; antenna efficiency; frequency 746 MHz to 787 MHz; gain 0.7 dB; mobile handset; printed circuit boards; radiation characteristics; Antenna measurements; Antennas; Downlink; Mobile handsets; Mutual coupling;
Conference_Titel :
Antennas and Propagation Society International Symposium (APSURSI), 2012 IEEE
Conference_Location :
Chicago, IL
Print_ISBN :
978-1-4673-0461-0
DOI :
10.1109/APS.2012.6348483
