TY - GEN
T1 - Bandpass filter with capacitively loaded coupled lines for wideband spurious rejection
AU - Chen, Peng
AU - Li, Luping
AU - Yang, Kai
AU - Chen, Qiang
N1 - Funding Information:
ACKNOWLEDGMENT This work was partly supported by the National Natural Science Foundation of China (61601088 and 61571093) and partly supported by foundation of Department of Education of Sichuan province (18ZB0230). P. Chen also acknowledges the visiting scholar financial support provided by China Scholarship Council (CSC).
Publisher Copyright:
© 2018 IEICE
PY - 2019/1/16
Y1 - 2019/1/16
N2 - A stepped-impedance resonator (SIR) bandpass filter with capacitively loaded coupled lines for wideband spurious rejection is proposed in this paper. The SIR unit has the ability to realize a wideband spurious rejection while the capacitively loaded coupled lines can provide two additional transmission zeros at the upper stopband, which are essential to improve the rejection performance. Simulated and measured results show that the center frequency of the proposed second-order filter is at 2.184 GHz with -2.6 dB insertion loss. It can provide -19 dB rejection levels in the stopband up to 6 times of the passband center frequency.
AB - A stepped-impedance resonator (SIR) bandpass filter with capacitively loaded coupled lines for wideband spurious rejection is proposed in this paper. The SIR unit has the ability to realize a wideband spurious rejection while the capacitively loaded coupled lines can provide two additional transmission zeros at the upper stopband, which are essential to improve the rejection performance. Simulated and measured results show that the center frequency of the proposed second-order filter is at 2.184 GHz with -2.6 dB insertion loss. It can provide -19 dB rejection levels in the stopband up to 6 times of the passband center frequency.
KW - Capacitively loaded
KW - Coupled lines
KW - SIR filter
KW - Wideband spurious rejection
UR - http://www.scopus.com/inward/record.url?scp=85061839270&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85061839270&partnerID=8YFLogxK
U2 - 10.23919/APMC.2018.8617504
DO - 10.23919/APMC.2018.8617504
M3 - Conference contribution
AN - SCOPUS:85061839270
T3 - Asia-Pacific Microwave Conference Proceedings, APMC
SP - 1333
EP - 1335
BT - 2018 Asia-Pacific Microwave Conference, APMC 2018 - Proceedings
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 30th Asia-Pacific Microwave Conference, APMC 2018
Y2 - 6 November 2018 through 9 November 2018
ER -