arxiveess.SP2026-07-04
A Triple-Band Bandpass Filter Using Square Open-Loop Resonators
Rashmi Ravi, Bhaskarareddy N C, Augustine O. Nwajana
The rapid advancement of multi-band wireless communication systems has driven demand for compact, high-performance multi-band bandpass filters (BPFs) capable of isolating specific frequency bands within a wider spectrum. This paper reviews the current state-of-the-art in multi-ba…