TY - JOUR
T1 - Elliptic-function CPW low-pass filters implemented by means of open complementary split ring resonators (OCSRRs)
AU - Aznar, Francisco
AU - Velez, Adolfo
AU - Duran-Sindreu, Miguel
AU - Bonache, Jordi
AU - Martin, Ferran
PY - 2009/11/1
Y1 - 2009/11/1
N2 - In this letter, an elliptic low-pass filter (LPF) implemented in coplanar waveguide (CPW) technology by etching open complementary split ring resonators (OCSRRs) in the central strip is presented for the first time. The OCSRRs behave as series connected parallel resonant tanks, whereas metallic patches etched in the back side of the substrate provide the required shunt capacitance to achieve the elliptic function response. An order-5 elliptic LPF has been designed and fabricated to illustrate the possibilities of this new approach. The measured frequency response is in good agreement with the ideal elliptic function up to twice the cutoff frequency dollar;(fc=1GHz). Since OCSRRs are electrically small resonators, filter dimensions are also small (device length is 2.5 cm, namely 0.13λ , where λ is the guided wavelength at fc). This work is illustrative of the possibilities of OCSRRs for the design of compact planar filters and other microwave components. © 2006 IEEE.
AB - In this letter, an elliptic low-pass filter (LPF) implemented in coplanar waveguide (CPW) technology by etching open complementary split ring resonators (OCSRRs) in the central strip is presented for the first time. The OCSRRs behave as series connected parallel resonant tanks, whereas metallic patches etched in the back side of the substrate provide the required shunt capacitance to achieve the elliptic function response. An order-5 elliptic LPF has been designed and fabricated to illustrate the possibilities of this new approach. The measured frequency response is in good agreement with the ideal elliptic function up to twice the cutoff frequency dollar;(fc=1GHz). Since OCSRRs are electrically small resonators, filter dimensions are also small (device length is 2.5 cm, namely 0.13λ , where λ is the guided wavelength at fc). This work is illustrative of the possibilities of OCSRRs for the design of compact planar filters and other microwave components. © 2006 IEEE.
KW - Coplanar waveguide (CPW)
KW - Low pass filter (LPF)
KW - Open complementary split ring resonator (OCSRR)
U2 - https://doi.org/10.1109/LMWC.2009.2032000
DO - https://doi.org/10.1109/LMWC.2009.2032000
M3 - Article
VL - 19
SP - 689
EP - 691
JO - IEEE Microwave and Wireless Components Letters
JF - IEEE Microwave and Wireless Components Letters
SN - 1531-1309
M1 - 5290046
ER -