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2012-07-06

Evaluation of Dcs1800/CDMA-Evdo Dual-Mode and Dual-Link Ue System Performance Based on the High Isolation Handset Antenna

By An-Ming Gao, Wei Jiang, Ling-Li Kong, Jian-Ping Ding, and Yong Jiang
Progress In Electromagnetics Research C, Vol. 31, 67-81, 2012
doi:10.2528/PIERC12052208

Abstract

This paper investigates the performance of DCS1800/CD-MA-EVDO dual-mode dual-link (DM-DL) UE, and presents an effective solution which is based on our designed high isolation antenna for the UE local electromagnetic interference (EMI). To this end, a DCS1800/CDMA-EVDO DM-DL UE model is firstly brought out, together with its system model, interference analysis and performance evaluation. Simulated results show that the DCS1800 (CDMA-EVDO) local interference will cause a sharp deterioration of the CDMA-EVDO (DCS1800) receiving sensitivity. To solve this problem, then, a compact and high isolation double-band handset antenna is given with its structure designed and performance validated by measurement. On the basis of this antenna and existing UE bandpass filter, we introduce a solution called ``passive isolation" to eliminate the local interference. Finally, the performance of DCS1800/CDMA-EVDO DM-DL UE is researched again by our solution, simulated results indicate that the isolation effect is quite good and the DM-DL UE can work normally.

Citation


An-Ming Gao, Wei Jiang, Ling-Li Kong, Jian-Ping Ding, and Yong Jiang, "Evaluation of Dcs1800/CDMA-Evdo Dual-Mode and Dual-Link Ue System Performance Based on the High Isolation Handset Antenna," Progress In Electromagnetics Research C, Vol. 31, 67-81, 2012.
doi:10.2528/PIERC12052208
http://jpier.org/PIERC/pier.php?paper=12052208

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