A UHF band wideband HTS filter with wide upper stopband
2014
This article presents a novel six-pole high-temperature superconducting (HTS) UHF band filter that achieves a wide passband and a wide stopband simultaneously. This filter is designed with a new type of resonator that is composed of interdigital fingers and a vertical meander line. The center frequency of the filter is 357 MHz, and the fractional bandwidth is 28%. The measured out-of-band rejection is better than 55 dB up to 1438 MHz, which is four times higher than the fundamental frequency. © 2014 Wiley Periodicals, Inc. Microwave Opt Technol Lett 56:600–603, 2014
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