TY - JOUR
T1 - Microstrip open-loop ring bandpass filter using open stubs for harmonic suppression
AU - Tu, Wen Hua
AU - Li, Huifeng
AU - Michalski, Krzysztof A.
AU - Chang, Kai
PY - 2006
Y1 - 2006
N2 - Improved harmonic suppression is achieved by adding small shunt open stubs to a conventional open-loop bandpass filter. A design curve for the shunt open stub is derived using the ABCD matrix calculation. The insertion loss of the four-pole filter is 3 dB at 1.8385 GHz, and the return loss is better than 10 dB within 1.7935-1.8835 GHZ. The suppression of the modified filter is better than 30 dB below 1.7 GHz and between 2-6 GHz, while the conventional filter shows a spurious passband at 3.7 GHz.
AB - Improved harmonic suppression is achieved by adding small shunt open stubs to a conventional open-loop bandpass filter. A design curve for the shunt open stub is derived using the ABCD matrix calculation. The insertion loss of the four-pole filter is 3 dB at 1.8385 GHz, and the return loss is better than 10 dB within 1.7935-1.8835 GHZ. The suppression of the modified filter is better than 30 dB below 1.7 GHz and between 2-6 GHz, while the conventional filter shows a spurious passband at 3.7 GHz.
KW - Harmonic suppression
KW - Open-loop bandpass filter
KW - Ring filter
UR - http://www.scopus.com/inward/record.url?scp=34250340105&partnerID=8YFLogxK
U2 - 10.1109/MWSYM.2006.249543
DO - 10.1109/MWSYM.2006.249543
M3 - 會議論文
AN - SCOPUS:34250340105
SN - 0149-645X
SP - 357
EP - 360
JO - IEEE MTT-S International Microwave Symposium Digest
JF - IEEE MTT-S International Microwave Symposium Digest
M1 - 4014903
T2 - 2006 IEEE MTT-S International Microwave Symposium Digest
Y2 - 11 June 2006 through 16 June 2006
ER -