A tri-band slot antenna using capacitive CPW and meander line stub technique

摘要

This paper presents a tri-band slot antenna designed by using capacitive CPW for controlling the second and third harmonics as desired. The slot stub with meander line is employed for matching, resulting in return loss less than -10 dB at all three operating bands. Radiation patterns are omni-directional. Bandwidths of the proposed antenna are 360 MHz, 1200 MHz, and 1400 MHz at 1.9 GHz (1.81 GHz-2.24 GHz), 3.7 GHz (2.77 GHz-3.97 GHz) and 5.5 GHz (4.75 GHz-6.22 GHz), respectively. These operating bands can be used for GSM, WiMAX and WLAN systems.