TY - GEN
T1 - Microstrip Line Non-Reciprocal Bandpass Filter with Tunable Center Frequency
AU - Chaudhary, Girdhari
AU - Lee, Jaehun
AU - Pech, Phanam
AU - Jeong, Yongchae
N1 - Publisher Copyright:
© 2022 IEEE.
PY - 2022
Y1 - 2022
N2 - In this paper, we present a design of a magnet-less microstrip line non-reciprocal bandpass filter (BPF) with tunable center frequencies. The proposed non-reciprocal BPF uses quarter-wavelength time-modulated resonators. To achieve a non-reciprocal (|S21|≠|S12|) filter response, a progressive phase shift AC modulation signal is applied to varactors through transmission line, which simplifies the modulation scheme. The center frequency is tuned by changing dc-bias voltage of varactor diode. For experimental validation, a prototype has been designed and fabricated. The measured results confirmed that center frequency is tuned from 1.45 GHz to 1.55 GHz with forward insertion loss variation of 3.71 dB to 3.40 dB and reserve isolation is higher than 10 dB.
AB - In this paper, we present a design of a magnet-less microstrip line non-reciprocal bandpass filter (BPF) with tunable center frequencies. The proposed non-reciprocal BPF uses quarter-wavelength time-modulated resonators. To achieve a non-reciprocal (|S21|≠|S12|) filter response, a progressive phase shift AC modulation signal is applied to varactors through transmission line, which simplifies the modulation scheme. The center frequency is tuned by changing dc-bias voltage of varactor diode. For experimental validation, a prototype has been designed and fabricated. The measured results confirmed that center frequency is tuned from 1.45 GHz to 1.55 GHz with forward insertion loss variation of 3.71 dB to 3.40 dB and reserve isolation is higher than 10 dB.
KW - frequency tunable
KW - Isolator
KW - magnet-less non-reciprocal bandpass filter
KW - time-modulated resonators
UR - https://www.scopus.com/pages/publications/85139167564
U2 - 10.1109/RFIT54256.2022.9882496
DO - 10.1109/RFIT54256.2022.9882496
M3 - Conference paper
AN - SCOPUS:85139167564
T3 - RFIT 2022 - 2022 IEEE International Symposium on Radio-Frequency Integration Technology
SP - 188
EP - 190
BT - RFIT 2022 - 2022 IEEE International Symposium on Radio-Frequency Integration Technology
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2022 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2022
Y2 - 29 August 2022 through 31 August 2022
ER -