volume | PIER Journals

Abstract

In this article, the authors propose the design and implementation of a frequency reconfigurable metamaterial-inspired octagon-shaped antenna for multiple wireless standards. The multiband functionality is achieved by incorporating a slotted self-similar octagonal radiating part with two SRR cells. The antenna design incorporates PIN diode switching elements on the slotted radiating patch, along with metamaterial-based SRR cell loading and a modified trapezoid-shaped partial ground plane, enabling its use across multiple wireless standards. The proposed design is resonating across five microwave frequency bands, including S-band WiMAX (3.5 GHz - IEEE 802.16e), 5G NR bands (n48: 3.55-3.70 GHz, n46: 5.15-5.925 GHz, n47: 5.855-5.925 GHz, n77: 3.3-4.2 GHz, n78: 3.3-3.8 GHz, n79: 4.4-5.0 GHz), C-band WLAN (5.0/5.8 GHz - IEEE 802.11a/ac), X-band (satellite communication, radar, terrestrial broadband, space communication), lower Ku-band for radar communication (13.43-14.55 GHz), upper Ku-band for molecular rotational spectroscopy (17.25-18.32 GHz), and lower K-band for astronomical observation services (18.81-19.96 GHz). The multiband antenna is then fabricated and tested, with measured and simulated results for return loss, gain, radiation efficiency, E-plane, and Hplane showing good agreement. The antenna's penta-band operation, compact size, stable radiation characteristics, and good impedance across the entire resonating band make it well-suited for various wireless applications.

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Ms. Hareetaa Mallani

Dr. Archana Agrawal

Dr. Ritesh Kumar Saraswat