Design and Fabrication of a Miniature Band Pass Filter to Enhance Frequency Bandwidth for Improved Data Transfer Rates in 5G Communication

Abstract

This paper presents the design and fabrication of a miniature band pass filter (M-BPF) using microstrip technology. The focus of this paper is to highlight the advantages of 5G communication in high data transfer rate applications. The test BPF is introduced with a bandwidth ranging from 7.6-9.8 GHz. It demonstrates good return loss and group delay, while also being miniaturized. The design is implemented on a Rogers RT/Duroid 5880 substrate. The proposed filter is manufactured and characterized, with the fabrication results providing support for the simulation results. The measurement and electromagnetic (EM) simulation results presented in this paper show a good correlation. The design of the M-BPF incorporates the GRN technique for resonator geometry, the stepped-impedance resonator (SIR) technique for impedance matching and reducing the effect of substrate admittance/capacitance, and electromagnetic coupling (EMC) for resonator network coupling based on the direct-coupled resonators (DCR) technique. The dimensions of the M-BPF are 1.4 × 1.5 mm2.