A selective band-pass filter with a microstrip rectangular-ring resonator is proposed for wireless LANs such as the IEEE 802.11 systems (2.45 or 5.25 GHz). The miniaturized band-pass filter is implemented using a high-permittivity dielectric substrate. The full-wave simulator IE3D is used to design the single rectangular-ring resonator. The responses of the implemented filters using FR4 (εr = 4.7, tanδ = 0.016) and Sm(Co1/2, Ti 1/2)O3 (εr = 25.5, tanδ = 0.00013) dielectric substrates are designed at dual-band frequencies of 2.45 and 5.25 GHz. Compact size and good agreement between the simulation and implementation results are obtained.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Electrical and Electronic Engineering