TY - JOUR
T1 - Design and performance of miniaturized quarter-wavelength resonator bandpass filters with attenuation poles
AU - Kanaya, H.
AU - Kawakami, K.
AU - Koga, F.
AU - Kanda, Y.
AU - Yoshida, K.
N1 - Funding Information:
Manuscript received October 4, 2004. This work was supported in part by the Grant-in-Aid for Encouragement of Young Scientists (B) from the Japan Society for the Promotion of Science (JSPS) and in part by a grant of Fukuoka project in the Cooperative Link of Unique Science and Technology for Economy Revitalization (CLUSTER) of Ministry of Education, Culture, Sports, Science and Technology (MEXT).
PY - 2005/6
Y1 - 2005/6
N2 - For more size reduction of the high temperature superconducting coplanar waveguide (CPW) bandpass filter (BPF), we introduce the design method of the meanderline quarter-wavelength resonator BPF. The admittance and impedance inverters (J- and K-inverters) are realized by using interdigital gaps and meanderline short stubs. Also, we estimate the slope parameter of the meanderline resonator by using EM-simulator. In order to control the attenuation poles, we adjust the meanderline intervals and shapes of the cross-coupling section, so that we can design the frequency and number of the attenuation poles. The size of the 6-pole CPW quarter-wavelength resonator with two attenuation poles (center frequency = 2 GHz) was 3.5 × 8 mm.
AB - For more size reduction of the high temperature superconducting coplanar waveguide (CPW) bandpass filter (BPF), we introduce the design method of the meanderline quarter-wavelength resonator BPF. The admittance and impedance inverters (J- and K-inverters) are realized by using interdigital gaps and meanderline short stubs. Also, we estimate the slope parameter of the meanderline resonator by using EM-simulator. In order to control the attenuation poles, we adjust the meanderline intervals and shapes of the cross-coupling section, so that we can design the frequency and number of the attenuation poles. The size of the 6-pole CPW quarter-wavelength resonator with two attenuation poles (center frequency = 2 GHz) was 3.5 × 8 mm.
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U2 - 10.1109/TASC.2005.850186
DO - 10.1109/TASC.2005.850186
M3 - Article
AN - SCOPUS:22044450917
SN - 1051-8223
VL - 15
SP - 1016
EP - 1019
JO - IEEE Transactions on Applied Superconductivity
JF - IEEE Transactions on Applied Superconductivity
IS - 2 PART I
ER -