TY JOUR TI Low-noise tunable narrow bandpass filter designed based on combined use of discrete variable capacitor and discrete variable inductor KW bandpass filter KW shortwave receiver KW low-noise selector KW discrete variable capacitor KW discrete variable inductor JO Infocommunications and Radio Technologies AU Posnyi, O.. AU Dolgushev, S.. AU Posnaya, E.. PY 2019 IS 2 PB Federal State Educational Institution of Higher Education Sevastopol State University