Multilayer hairpin bandpass filter for digital broadcasting: article / Mohd Haziq Mokhtar

Abstract—this paper presents 2.52-2.65 GHz bandpass filter using hairpin resonator in multilayer configuration for digital broadcasting application. The four-pole hairpin resonators centered at 2.58 GHz with bandwidth of 130 MHz were designed. The best return and insertion losses in the passband are -27.828 dB and 1.5028 dB, respectively. Combination of hairpin resonator with coupled line sections operating at desired frequency has been optimized and simulated on Rogers RO3003 with dielectric constant 3.0 together with the analysis using Computer Simulation Technology (CST).