Design and Development of Tunable Bandpass Filter at Microwave Frequency Using Plasmonic Metamaterial Based Ring Resonator Structure

As compared to the current 4G mobile technology, a higher bandwidth and a lower latency will be provided by 5G and beyond technologies, which is planned to be deployed in 2020-2030, providing connectivity to billions of devices and enabling bandwidth with more than hundreds of megabits per second and very low latency less than 1 millisecond (ms). The tunable wideband RF system is essential part for realization of above mentioned technology in which tunable Band Pass Filter (BPF) is important microwave component. The tunable filter with variable frequency response is designed by altering of the electrical path of the mode current. Spoof surface Plasmon Polaritons (SSPPs) based BPF structure are the artificial engineered material-based design. This is trend towards of Microwave Photonics or Metamaterial Physics to application of tunable Bandpass Filter at Microwave Frequency. The paper comprises of corrugated ring resonator SSPP structure with tuning capability using novel approach at Microwave Frequency.The corrugated ring resonator-based bandpass filter show octave bandwidth i.e. the 3 dB passband is achieved between 3. 5-7.0 GHz. The varactor tuned corrugated ring resonator is shown to achieve electronically tunable BPF.