TY - GEN
T1 - Mixed coupled quarter-wavelength resonator filter utilizing J/K inverters and coupling-path phases
AU - Anwar, Muhammad Sufian
AU - Nawaz, Hamza
AU - Kiyani, Arslan
AU - Abbasi, Muhammad Ali Babar
PY - 2020/9/29
Y1 - 2020/9/29
N2 - This paper presents a compact mixed coupled quarterwavelength (λ(4) resonator filter employing J/K inverters and coupling-path phases. In contrast to conventional mixed coupled models, the proposed method makes use of separated J and K inverters to obtain desired electric and magnetic couplings respectively. A transmission zero (TZ) below passband is created by applying capacitive dominant mixed coupling between U4 uniform impedance resonators (UIRs). In addition to coupling magnitude, the TZ also depends on coupling path phases. Tapped feed lines implied between resonators and input-output (I/O) ports provide necessary electrical length ratio between J and K coupling paths. A fourth order prototype filter at 1OGHZ with 6.8% fractional bandwidth (FBW) is designed, fabricated and tested. The measured results show good agreement with simulated response, which verifies the design approach.
AB - This paper presents a compact mixed coupled quarterwavelength (λ(4) resonator filter employing J/K inverters and coupling-path phases. In contrast to conventional mixed coupled models, the proposed method makes use of separated J and K inverters to obtain desired electric and magnetic couplings respectively. A transmission zero (TZ) below passband is created by applying capacitive dominant mixed coupling between U4 uniform impedance resonators (UIRs). In addition to coupling magnitude, the TZ also depends on coupling path phases. Tapped feed lines implied between resonators and input-output (I/O) ports provide necessary electrical length ratio between J and K coupling paths. A fourth order prototype filter at 1OGHZ with 6.8% fractional bandwidth (FBW) is designed, fabricated and tested. The measured results show good agreement with simulated response, which verifies the design approach.
U2 - 10.1109/ucet51115.2020.9205371
DO - 10.1109/ucet51115.2020.9205371
M3 - Conference contribution
SN - 9781728194899
T3 - International Conference on UK-China Emerging Technologies (UCET): Proceedings
BT - 2020 International Conference on UK-China Emerging Technologies (UCET): proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
ER -