In this paper, a Multiband Frequency Reconfigurable Substrate Integrated Waveguide (FR-SIW) cavity backed slot antenna for Cognitive Radio appropriate to Internet of Things (IoT) technology is presented. The proposed antenna is developed to address the specific design challenges posed by the IoT based Cognitive Radio (CR) networks. Reconfiguration of frequency bands is achieved using copper strips. The antenna resonates during the selected five switching states of the copper strips at 2.9 GHz, 2.6 GHz, 2.824 GHz, 2.792 GHz, 2.872 GHz, 4.488 GHz, 4.724 GHz, 4.712 GHz, 5.476 GHz, 5.336 GHz, 5.448 GHz, 5.392 GHz, and 5.42 GHz. The multiple frequency bands are controlled by altering the electrical length of designed slots. Overall, the simulated and measured results showed good agreement and the designed antenna is a potential candidate for cognitive radio applications, especially to IoT applications.

本文提出了一种适用于物联网（IoT）技术的认知无线电用多频带频率可重构基板集成波导（FR-SIW）腔背隙缝隙天线。开发拟议的天线是为了解决基于物联网的认知无线电（CR）网络带来的特定设计挑战。使用铜条可以重新配置频带。天线在2.9 GHz，2.6 GHz，2.824 GHz，2.792 GHz，2.872 GHz，4.488 GHz，4.724 GHz，4.712 GHz，5.476 GHz，5.336 GHz，5.448 GHz，5.392 GHz，和5.42 GHz。通过改变设计的缝隙的电气长度来控制多个频带。总体，