A novel configuration of quad-band bowtie antenna suitable for wireless application is proposed based on accurate equivalent\ncircuit model. The simple configuration and low profile nature of the proposed antenna lead to easy multifrequency operation.\nThe proposed antenna is designed to satisfy specific bandwidth specifications for current communication systems including the\nBluetooth (frequency range 2.4ââ?¬â??2.485GHz) and bands of the Unlicensed National Information Infrastructure (U-NII) low band\n(frequency range 5.15ââ?¬â??5.35GHz) and U-NII mid band (frequency range 5.47ââ?¬â??5.725GHz) and used for mobile WiMAX (frequency\nrange 3.3ââ?¬â??3.6GHz). To validate the proposed equivalent circuit model, the simulation results are compared with those obtained\nby the moments method of Momentum software, the finite integration technique of CST Microwave studio, and the finite element\nmethod of HFSS software. An excellent agreement is achieved for all the designed antennas. The analysis of the simulated results\nconfirms the successful design of quad-band bowtie antenna.
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