TY - JOUR SN - 19376480 JF - Progress in Electromagnetics Research Letters N1 - cited By 0 TI - Highly selective lossy dual-band bandstop filter synthesis and design based on predistortion hybrid dual-band elliptic reflection function N2 - This paper demonstrates a new class of highly selective bandstop filter based on cascading two identical lossy hybrid dual-band bandstop filters of low resonator Q factor. Each filter is synthesized based on multi-stage predistortion reflection mode technique. To demonstrate the approach, 4th order hybrid dual-band elliptic filter network which is a product of elliptic lowpass and highpass network functions has been predistorted and synthesized with low calculated Q factor. The lossy dual-band bandstop filters are fabricated and realized on microstrip planar structure. Both theoretical and experimental results clearly show good agreements with two stopband rejections up to 35 dB for one stage and 50 dB for two stages with passband loss of more than 10 dB. © 2017, Electromagnetics Academy. All rights reserved. ID - scholars9353 EP - 23 UR - https://www.scopus.com/inward/record.uri?eid=2-s2.0-85014793105&doi=10.2528%2fPIERL16112902&partnerID=40&md5=fbc5671137a809668f836a9942ef4706 KW - Bandpass filters; Elliptic filters; Notch filters; Q factor measurement KW - Filter synthesis; High-pass networks; Planar structure; Pre-distortion; Reflection functions; Reflection modes; Resonator Q-factor; Stopband rejection KW - Microstrip filters SP - 15 PB - Electromagnetics Academy A1 - Soeung, S. A1 - Wong, P.W. A1 - Cheab, S. AV - none Y1 - 2017/// VL - 66 ER -