Single ring dual-band bandpass filter with meander for WLAN application / Mohd Musalman Abdullah Sani

A single ring resonator dual-band bandpass filter using quarter-wavelength resonators suitable for WLAN applications is presented in this paper. Both side of ring resonator consist of quarter-wavelength parallel coupled lines. In further reducing the size of the filter, meander structure is applied to an existing design. Using different number of meander slots, a microstrip dual-band single ring resonator are applied and realized on FR4 substrate with thickness of 1.6 mm and dielectric constant of 5.4. The proposed design is to suite filter operating frequencies at 2.5 GHz and 5.2 GHz. Simulation is carried out in analysing the performance of the design using Advance Design System (ADS) and fabrication is done to validate the topology.