Compact Ridge Waveguide Filters With Arbitrarily Placed Transmission Zeros Using Nonresonating Nodes

TitleCompact Ridge Waveguide Filters With Arbitrarily Placed Transmission Zeros Using Nonresonating Nodes
Publication TypeJournal Article
Year of Publication2009
AuthorsFahmi, M. M., J. A. Ruiz-Cruz, R. R. Mansour, and K. A. Zaki
JournalIEEE Transactions on Microwave Theory and Techniques
Volume57
Pagination3354-3361
Date PublishedDec.
ISSN0018-9480
KeywordsAttenuation poles, microwave filters, mode-matching, ridge waveguides
AbstractCompact size ridge waveguide filters based on the nonresonating node concept are introduced to realize transfer functions with arbitrarily placed attenuation poles. Coupling mechanisms, suitable for the new realization are introduced in diverse $E$ -plane and $H$ -plane configurations and with different input-output interfaces. These coupling structures are studied and characterized in detail in order to simplify the design of the proposed filters. Rigorous mode-matching method is used to accelerate the full-wave design of the filter configurations, whose response is also verified using other numerical techniques and experimental data. To validate the proposed novel designs, a prototype has been built and tested. Measurement results agree well with the predicted theoretical simulations.
URLhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=5308444&isnumber=5340253
DOI10.1109/TMTT.2009.2034423