RT info:eu-repo/semantics/conferenceObject
T1 Input-absorptive high-order wideband balun bandpass filters with quasi-elliptic-type response
A1 Yang, Li
A1 Gómez García, Roberto
K1 Absorptive filter
K1 Balun
K1 Bandpass filter (BPF)
K1 Multilayer circuit
K1 Reflectionless filter
K1 Transmission zero (TZ)
K1 Vertical transition
K1 Wideband filter
K1 Telecomunicaciones
K1 Telecommunication
AB A class of input-reflectionless high-order widebandbalun bandpass filters (BPFs) with quasi-elliptic-type response arereported. They consist of two main circuit parts: 1) a three-portreflective-type high-order balun BPF network and 2) a resistivelyterminated microstrip T-junction that is shunt connected at theunbalanced port. The reflective-type balun BPFs developed with5th- and 6th-order Chebyshev equal-ripple responses are firstlydescribed. By replacing the last two virtually-short-circuit-endedquarter-wavelength transmission-line (TL) stubs with opencircuit-ended half-wavelength TL stubs, their balun counterpartswith two close-to-passband transmission zeros (TZs) are thenpresented. As design example, a 5th-order input-reflectionlessquasi-elliptic-type wideband balun BPF is theoretically discussed.Furthermore, for experimental-validation purposes, a proof-ofconcept two-layer microstrip prototype of 5th-order balun BPF issimulated and tested. Its measured metrics are 2.05-GHz centerfrequency, 3-dB fractional bandwidth of 63.61% for the twooutput ports, input-power-matching levels higher than 10 dB, andstopband-power-rejection levels above 26.1 dB from DC to 5 GHz.
PB IEEE
SN 978-2-8748-7069-9
YR 2022
FD 2022-10-31
LK http://hdl.handle.net/10017/55324
UL http://hdl.handle.net/10017/55324
LA eng
NO 2022 52th European Microwave Conference (EuMC), 27-29 September 2022, Milan, Italy.
NO European Commission
DS MINDS@UW
RD 04-oct-2023