| Title |
FR-4 Embedded UWB Filter using Uniform Impedance Resonator |
| Authors |
양창수(Yang, Chang-S.) ; 윤상근(Yoon, Sang-K.) ; 박재영(Park, Jae-Y.) |
| Keywords |
Ultra Wideband (UWB) Filter ; Embedded ; FR-4 ; Circular Spiral Inductor ; MIM Capacitor ; Uniform Impedance Resonator (UIR) ; High Dielectric Composite Film |
| Abstract |
In this paper, a novel embedded ultra wideband (UWB) band-pass filter is presented on a FR-4 package substrate including high Dk resin coated copper (ε_r=30) film. The proposed UWB filter is comprised of a parallel resonator with meander-type uniform impedance resonator (UIR) and two series resonators with high Q circular stacked spiral inductor and metal-insulator-metal (MIM) capacitor. In order to obtain excellent attenuation characteristics by generating attenuation poles in lower and upper stop bands, a single MIM capacitor is added to each resonator. The fabricated FR-4 embedded UWB filter has insertion loss of -1.0dB and return loss of -11dB, respectively. It has also extremely wide bandwidth (over 50%) and small size (3.7×4×0.77 mm^3) which is compatible with LTCC devices. |