Electrically tunable antenna for mobile phones
Abstract
First results of the development of a tunable antenna for cellular phones operating in the standard LTE are presented. The antenna consists of high- and low-frequency branches, the latter one is tuned by digital-controlled capacitor. Computer simulation of the antenna was conducted by using the RFS. Simulation results show that low-frequency antenna branch can be tuned without detuning high-frequency one. Radiation efficiency of the antenna in high-frequency band yields 60 % or more, while in low-frequency range efficiency drops to 20…30 %. The work on improving these results is now continuing.
About the Authors
A. D. Grigoriev
Saint Petersburg Electrotechnical University "LETI"
Russian Federation
Russian Federation
B. O. Djalilov
Saint Petersburg Electrotechnical University "LETI"
Russian Federation
Russian Federation
References
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2. Nguyen V.-A., Bhatti R.-A., Park S.-O. A simple PIFA-based tunable internal antenna for personal communication handsets // IEEE ant. and wireless prop. letters. 2008. Vol. 7. P. 130-133.
3. Григорьев А. Д., Салимов Р. В., Тихонов Р. И. Моделирование антенн сотовых телефонов методом векторных конечных элементов // Радиоэлектроника. 2012. Т. 57, № 3. С. 261-270.
Review
For citations:
Grigoriev A.D., Djalilov B.O. Electrically tunable antenna for mobile phones. Journal of the Russian Universities. Radioelectronics. 2015;(5):39-41. (In Russ.)
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