Low-profile Slotted SIW Cavity Backed Antenna for Frequency Agility

F. Sboui, J. Machac, A. Gharsallah

Low-profile Slotted SIW Cavity Backed Antenna for Frequency Agility

Číslo: 2/2019
Periodikum: Radioengineering Journal
DOI: 10.13164/re.2019.0386

Klíčová slova: Substrate integrated waveguide, frequency reconfigurable antenna, cavity backed antenna

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Anotace: The agile frequency antennas are widely used for wireless communication systems. This paper studies and designs a low-profile SIW antenna radiating from a circular slot graved in the ground plane, with the ability of alternating the frequency. The antenna is intentionally designed within a range of 1.8 GHz to 2.18 GHz obtained by varying the DC bias voltages from 0 to 26 V, which is able to cover the GSM1800, the LTE, and the UMTS wireless standards. The tuning technique consists in the integration of two varactor diodes across the circular slot. A prototype was manufactured, and the experiment results correspond well to those of the simulations.