A Multimode Stub Loaded Resonator Based UWB Band Pass Filter
Payal Choudhry; Prof. (Dr. ) Ompal Singh
In this paper, for controlling the resonant modes of the SLSIR two impedance ratios and two length ratios are operated as the design parameters. Study shows that several resonant mode variation curves operating three resonant modes with different impedance ratios and two length ratios are developed. By tuning the desired impedance ratios and length ratios of the SLSIRs, compact ultra-wideband (UWB) band pass filters (BPFs) can be achieved. In this paper two examples of the UWB BPFs are designed. The first example is UWB filter with a wide stop band and the second one is dual UWB BPF, namely, with UWB performance and a notch band. The first filter is designed for a UWB response from 3.1 to 5.26 GHz having a stop band from 5.3 to 11 GHz, with an attenuation level better than 18 dB. The second filter example is a dual UWB BPF with the frequency range from 3.1 to 5 GHz and 6 to 10.1 GHz using two sets of the proposed SLSIR.