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Compact Broadband Printed Slot-Monopole-Hybrid Diversity Antenna for Mobile Terminals

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3 Author(s)
Gaojian Kang ; State Key Laboratory on Microwave and Digital Communications, Tsinghua National Laboratory for Information Science and Technology, Department of Electronic Engineering, Tsinghua University, Beijing, China ; Zhengwei Du ; Ke Gong

A compact broadband printed diversity antenna is proposed and studied. The antenna, which consists of two symmetric slot-monopole-hybrid (SMH) elements, is printed on a printed circuit board (PCB). A prototype of the proposed antenna is fabricated and measured. It has a -10-dB impedance bandwidth of 460 MHz (1.85-2.31 GHz), covering the PCS (1850-1990 MHz), PHS (1880-1930 MHz), DECT (1880-1900 MHz), and UMTS (1920-2170 MHz) bands, and across the whole band, the isolation of the diversity antenna is higher than 14.8 dB. The measured radiation patterns can cover complementary space regions. The diversity performance is also evaluated by calculating the envelope correlation coefficient, the mean effective gains of the elements, and the diversity gain using the measured results.

Published in:

IEEE Antennas and Wireless Propagation Letters  (Volume:10 )