Miniaturized Off-Centered Fed Dipole Slot Antenna for Multiband Wireless Applications

In this work, an OFF-Centered fed dipole slot antenna with a reduced ground plane for multiband wireless communication is discussed. The proposed design works at GPS/Galileo (1.13- 1.32) GHz, LTE band 3 (1.6 - 1.88) GHz, LTE (2.60 - 3.0) GHz and WLAN (4.92 - 5.50) GHz for -10 dB reference value of the return loss (Reflection coefficient). The design has microstrip feedline followed by a quarter wave transformer. Slots were introduced in both the poles for size miniaturization and also to improve impedance bandwidth, gain and efficiencies. The antenna performance is evaluated in terms of impedance bandwidth, gain and radiation pattern. Moreover, introduction of the slots helps to get an additional resonance frequency. The design is fabricated, and results are measured for the fabricated design. Simulated results show close resemblance with measured results.