Design of a dual-band bandpass filter with shunt stubs for wireless local area network and satellite communication system

• Published in: International journal of reconfigurable and embedded systems Vol. 14; no. 2; p. 490
• Main Authors: Abraham, Jacob, Suriyan, Kannadhasan
• Format: Journal Article
• Language: English
• Published: 01.07.2025
• ISSN: 2089-4864; 2722-2608
• DOI: 10.11591/ijres.v14.i2.pp490-496

High-performance radio frequency (RF) modules are required in transmitter and reception devices due to the recent expansion of wireless technology. The power amplifier, low-noise amplifier, filter, and mixer are the most crucial components in the RF transmitter/receiver chain. This work presents the design and analysis of a dual-band bandpass filter (BPF) for wireless local area network (WLAN) and C-band satellite applications. Stubs of the proper electrical length that are open and short-circuited are used to implement the filter. The low pass performance is generated by the open-circuited stubs. Short-circuited stubs achieve high-pass performance, while the combination of open and short-circuited stubs achieves bandpass performance. We confirm the filter's behaviour using the advanced design system 2022 simulation tool. The findings of return loss and insertion loss confirm the simulation-level performance analysis of the filter. The result demonstrates the suggested BPF's dual-band behaviour at 4 GHz and 6 GHz.