Compact Dualband Bandstop Filter on Liquid Crystal Polymer

In this article, compact dual-band band-stop filter on flexible material (Liquid Crystal Polymer) substrate is proposed. Bandstop filter for WiFi band 2.4 GHz and 5 GHz is targeted. Both stop-bands should reject at least 500 MHz around the center frequency with good rejection levels. Simulation and measured results show matching even at various bending angles. The conformality of proposed dual-band band-stop filter across 15°, 30°, 45° bending angles are tested and observed negligible variation within the over-all performance characteristics. Prototyped microstrip band-pass filter results are measured using the Vector Network Analyzer (VNA) and observed appropriate validation of simulation results.