TY - GEN
T1 - Novel T-shaped non-orthogonal dual-mode band-pass filters with two differently structured resonators
AU - Kung, C. Y.
AU - Yang, C. F.
AU - Hsieh, Y. T.
AU - Chang, W. C.
AU - Kuo, C. G.
AU - Diao, C. C.
PY - 2013
Y1 - 2013
N2 - Novel dual-mode filters with two differently structured resonators were designed on Al2O3 ceramic substrates to achieve pattern minimization and better filter properties. The input/output microstrip lines were arranged in a straight line, making the designed filter easy to connect with other RF circuits. To promote a coupling effect between the input/output microstrip lines and the resonator, two additional coupling stubs were used to form modified T-shaped microstrip coupling lines. In a dual-mode filter, adding a perturbation stub could generate two degenerate modes and increased the bandwidth in the desired passband. To achieve this, the type-A dual-mode filter was designed on a square-ring resonator with two perturbation stubs. For the type-B filter, two open stubs, one perturbation patch, and one meandering loop ring resonator were investigated to achieve the same purpose but with a smaller pattern size than type-A. According to simulated results, the proposed filters with optimized parameters exhibited the wide passbands.
AB - Novel dual-mode filters with two differently structured resonators were designed on Al2O3 ceramic substrates to achieve pattern minimization and better filter properties. The input/output microstrip lines were arranged in a straight line, making the designed filter easy to connect with other RF circuits. To promote a coupling effect between the input/output microstrip lines and the resonator, two additional coupling stubs were used to form modified T-shaped microstrip coupling lines. In a dual-mode filter, adding a perturbation stub could generate two degenerate modes and increased the bandwidth in the desired passband. To achieve this, the type-A dual-mode filter was designed on a square-ring resonator with two perturbation stubs. For the type-B filter, two open stubs, one perturbation patch, and one meandering loop ring resonator were investigated to achieve the same purpose but with a smaller pattern size than type-A. According to simulated results, the proposed filters with optimized parameters exhibited the wide passbands.
KW - AlO
KW - Asymmetric bandwidth
KW - Dual band
KW - Phase difference
UR - http://www.scopus.com/inward/record.url?scp=84881067679&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84881067679&partnerID=8YFLogxK
U2 - 10.1007/978-1-4614-6747-2_78
DO - 10.1007/978-1-4614-6747-2_78
M3 - Conference contribution
AN - SCOPUS:84881067679
SN - 9781461467465
T3 - Lecture Notes in Electrical Engineering
SP - 675
EP - 684
BT - Intelligent Technologies and Engineering Systems
T2 - 2012 1st International Conference on Intelligent Technologies and Engineering Systems, ICITES 2012
Y2 - 13 December 2012 through 15 December 2012
ER -