Low-Cost, Flexible Dual-Band Planar Monopole Graphite Antenna for GSM/ITM/WLAN/LTE/X-band Applications
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Abstract
This research aims to design and fabricate a flexible, low-cost planar monopole antenna using a graphite sheet produced from graphite powder and all-purpose glue. The initial step is the design of a simple rectangular monopole antenna. Structural fine-tuning was done by etching the ground plane and incorporating a stub to the end of the antenna radiator. The restructuring resulted in the structurally tuned antenna supporting a frequency bandwidth expansion from single to dual bands: 1.72–4.29 GHz low band and 4.59–9.09 GHz high band, which cover GSM, ITM, WLAN, LTE41, and X-band in satellite communication applications. According to the measurement results, the proposed antennas are omnidirectional in a single plane radiation with an average gain of 1.91 dBi and 1.97 dBi at 2.45 GHz and 5.8 GHz, respectively.
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