Design of microstrip bandpass filters with a dual-passband response

@article{citeulike:2782032, abstract = {This paper presents a rigorous design of microstrip bandpass filters with a dual-passband response in parallel-coupled and vertical-stacked configurations. Based on resonance characteristics of a stepped impedance resonator (SIR), the second resonant frequency can be tuned over a wide range by adjusting its structure parameters. Emphasis is placed on filter synthesis for simultaneously matching in-band response and singly loaded Q by using tapped input/output couplings for the two designated passbands. Fractional bandwidth design graphs are used to determine proper geometric parameters of each coupled stage when filter specification is given. Realizable fractional bandwidths of the two passbands for a coupled SIR structure are clearly depicted in fractional bandwidth design graphs. Several experimental filters are fabricated and measured to demonstrate the design.}, author = {Kuo, Jen-Tsai and Yeh, Tsung-Hsun and Yeh, Chun-Cheng }, booktitle = {Microwave Theory and Techniques, IEEE Transactions on}, citeulike-article-id = {2782032}, doi = {10.1109/TMTT.2005.845765}, journal = {Microwave Theory and Techniques, IEEE Transactions on}, keywords = {bandpass, filter, microstrip}, number = {4}, pages = {1331--1337}, posted-at = {2008-05-10 00:53:23}, priority = {2}, title = {Design of microstrip bandpass filters with a dual-passband response}, url = {http://dx.doi.org/10.1109/TMTT.2005.845765}, volume = {53}, year = {2005} }

TY - JOUR ID - citeulike:2782032 TI - Design of microstrip bandpass filters with a dual-passband response T2 - Microwave Theory and Techniques, IEEE Transactions on JF - Microwave Theory and Techniques, IEEE Transactions on VL - 53 IS - 4 SP - 1331 EP - 1337 N2 - This paper presents a rigorous design of microstrip bandpass filters with a dual-passband response in parallel-coupled and vertical-stacked configurations. Based on resonance characteristics of a stepped impedance resonator (SIR), the second resonant frequency can be tuned over a wide range by adjusting its structure parameters. Emphasis is placed on filter synthesis for simultaneously matching in-band response and singly loaded Q by using tapped input/output couplings for the two designated passbands. Fractional bandwidth design graphs are used to determine proper geometric parameters of each coupled stage when filter specification is given. Realizable fractional bandwidths of the two passbands for a coupled SIR structure are clearly depicted in fractional bandwidth design graphs. Several experimental filters are fabricated and measured to demonstrate the design. KW - bandpass KW - filter KW - microstrip AU - Kuo, Jen-Tsai AU - Yeh, Tsung-Hsun AU - Yeh, Chun-Cheng PY - 2005/// UR - http://dx.doi.org/10.1109/TMTT.2005.845765 ER -