TY - JOUR
T1 - Miniature CPW parallel-coupled bandpass filter based on inductive loaded coupled-lines and lumped-element J-inverters
AU - Lin, Yo Shen
AU - Cheng, Chien Chun
N1 - Funding Information:
Manuscript received November 6, 2006; revised January 11, 2007. This work was supported by the National Science Council of Taiwan, R.O.C., under Grants NSC 94-2213-E-002-053 and NSC 95-2221-E-008-022. Y.-S. Lin is with the Department of Electrical Engineering, National Central University, Chungli 320, Taiwan, R.O.C. (e-mail: [email protected]). C.-C. Cheng is with the Graduate Institute of Communication Engineering, National Taiwan University, Taipei 106, Taiwan, R.O.C. Digital Object Identifier 10.1109/LMWC.2007.895699
PY - 2007/5
Y1 - 2007/5
N2 - This study presents a compact coplanar-waveguide (CPW) parallel-coupled bandpass filter (BPF) with good selectivity and stopband rejection. The inductive terminations are introduced to the conventional anti-parallel coupled-lines, and lumped-element J-inverters are employed, to achieve both size reduction and spurious suppression. Additionally, the inductive cross-coupling effect is introduced to obtain two transmission zeros to enhance the selectivity. Suitable equivalent-circuit model is also established as effective design tool. Specifically, this work demonstrates a compact cross-coupled fourth-order BPF in grounded-CPW configuration. Compared to the conventional filters, the proposed filters exhibit over 65% size reduction, improved selectivity, and wider stopbands up to four times the center frequency.
AB - This study presents a compact coplanar-waveguide (CPW) parallel-coupled bandpass filter (BPF) with good selectivity and stopband rejection. The inductive terminations are introduced to the conventional anti-parallel coupled-lines, and lumped-element J-inverters are employed, to achieve both size reduction and spurious suppression. Additionally, the inductive cross-coupling effect is introduced to obtain two transmission zeros to enhance the selectivity. Suitable equivalent-circuit model is also established as effective design tool. Specifically, this work demonstrates a compact cross-coupled fourth-order BPF in grounded-CPW configuration. Compared to the conventional filters, the proposed filters exhibit over 65% size reduction, improved selectivity, and wider stopbands up to four times the center frequency.
KW - Bandpass filter (BPF)
KW - Coupled-line
KW - Cross-coupled
KW - Inductive loaded
KW - J-inverter
KW - Lumped-element
KW - Parallel-coupled
UR - http://www.scopus.com/inward/record.url?scp=34247594464&partnerID=8YFLogxK
U2 - 10.1109/LMWC.2007.895699
DO - 10.1109/LMWC.2007.895699
M3 - 期刊論文
AN - SCOPUS:34247594464
SN - 1531-1309
VL - 17
SP - 343
EP - 345
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
IS - 5
ER -