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A Dual frequency Monopole Antenna using CPW Feed Line  

Kim, Joon-Il (Department of Electronics, Sogang University)
Choi, Soon-Shin (Department of Electronics, Sogang University)
Jee, Yong (Department of Electronics, Sogang University)
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Abstract
The design method for a dual frequency antenna using CPW feed lines is presented. The antenna structures can be simplified by CPW feed lines and easily designed on integrated circuits. The presented antenna has two resonant frequency ranges and each respective resonant frequency is determined by its own length of monopole antenna. We used an impedance matching method by using a monopole coupling related to the ground of CPW feed lines As a result, the resonant frequencies were 5.25[GHz] and 23.5[GHz] and their bandwidths $35.2\%,\;and\;41.3\%$, respectively, and also, the separation of the two frequencies $370\;%$. We presented an analytical designing method to implement a dual frequency monopole antenna and showed simple antenna structures having two frequency ranges for RFIC Integrations.
Keywords
CPW;
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