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Progress In Electromagnetics Research C | ISSN: 1937-8718 |
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COMPACT DUAL BAND 1.8/3.3 GHZ PLANAR MONOPOLE ANTENNAS USING TUNING MECHANISMS FOR GSM/WIMAXBy C.-L. Tsai and C.-L. YangAbstract: This study is designed mainly for dual band antennas of GSM/WiMAX operation in a wireless mobile communication device. This study proposes a matching technology for single path resonance in a basic monopole antenna running in dual-mode [1] and extends to a wide tuning range. The tuning of each frequency band is complicated under the constraint of the common path of dual-mode due to mutual interaction. This study proposes a refined process and new type of antennas for excellent dual-frequency matching. The incorporation of such a matching mechanism into a tuning monopole antenna enables the flexible operation bands. Moreover, the ground plane size can be shrunk to a reasonable size, and the details will be discussed in Section~6. As a result, antennas can achieve a tuning ratio of 1.6 (from 1825 to 2943 MHz). The total area of such a compact antenna including its ground can be effectively reduced to 0.018λ02.
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