Multi Band Inter Connected C-Shaped Flexible Antenna for Mobile and Fixed Wireless Communication Systems

Abstract

The Point to Point (PTP) and Point to Multi-point (PTM) radio services are offered to users in the form of fixed wireless services. These services are used in core and access networks including all equipment aspects as well as antenna parameters. The antenna is very essential part of any transmitter and receiver integrated in core and access systems. Therefore, this research article presents design and analysis of multi band inter connected C-shaped flexible antenna for 5 GHz Wireless Fidelity (Wi-Fi) mobile communication system and 8 GHz Fixed wireless communication system, functioning simultaneously. The proposed interconnected compact C-shaped flexible antenna is loaded with group of three small circles on the common branch of interconnected C-shape and another big circle at the center to obtain maximum transfer of signals from transmitter to receiver and vice versa. This complete structure is printed on Kapton Polyamide substrate having size of 15 × 20 × 0.2 mm3 and is excited using coplanar waveguide (CPW) feeding technique to achieve desired resonances at 5.4 and 8.6 GHz covering impedance bandwidth of 15.38% (5.10–5.95) GHz Wi-Fi mobile communication band and 23.11% (7.73–9.75) GHz fixed wireless communication band, respectively. Further investigation confirms flat gain of around 3 dBi, efficiency greater than 90% and omnidirectional radiation envelopes in both the desired operating bands. Moreover, in order to prove the flexibility of antenna and its effect on impedance bandwidth, gain and efficiency, a simulated experimentation of bending analysis along both X and Y axis is also carried out using CST MWS studio suit software.