@article {10_IEEEMWCL_ZhangRuiz-CruzZaki_WaveguideMicrostripTransition, title = {A Waveguide to Microstrip Inline Transition With Very Simple Modular Assembly}, journal = {IEEE Microwave and Wireless Components Letters}, volume = {20}, number = {9}, year = {2010}, month = {Sept.}, pages = {480-482}, abstract = {A microstrip to empty rectangular waveguide transition is presented for systems requiring a simple modular assembly with good electrical performance. The structure is based on three building blocks, involving a microstrip line to dielectric-loaded rectangular waveguide, a transition between dielectric-loaded and empty rectangular waveguides with reduced height, and a final transformer to standard waveguide. These three building blocks (segmentation based on the design point of view) are combined in three simple parts which are assembled in a straightforward modular way, without soldering. These features are very important for signal feeders requiring a large number of transitions, as the X-band phased array antenna where the proposed structure has been integrated. The concepts involved in the design and manufacturing are illustrated with a prototype showing measured return loss of 10 dB and insertion loss of 1.1 dB in the band 8.5-9.5 GHz.}, issn = {1531-1309}, doi = {10.1109/LMWC.2010.2056358}, url = {http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=5545481}, author = {Zhang, Y and J A Ruiz-Cruz and Zaki, K A and Piloto, A J} } @article {07_IJRFMiCAE_Ruiz-CruzMontejo-GaraiRebollarEtAl_Waveguidefilterswith, title = {Waveguide filters with elliptical function response: Overview and results of different implementations}, journal = {International Journal of RF and Microwave Computer-Aided Engineering}, volume = {17}, number = {1}, year = {2007}, month = {Jan.}, pages = {63-69}, abstract = {Some recent implementations of waveguide filters with elliptical response are presented in this paper. The goal is to describe the main aspects involved in the computer-aided design of elliptic waveguide filters, which are commonly used at microwave and millimeter-wave frequencies by their high selectivity, low insertion loss, and high power-handling capabilities. Three different examples based on crosscoupled cavities and the extracted-pole procedure are used to illustrate the main ideas, with their corresponding experimental results. A comparative table summarizes the main features of the presented filters.}, keywords = {Bandpass Waveguide Filters, Design, Extracted Poles, N-Transmission Zeros, Order Filters, resonators}, issn = {1096-4290}, doi = {10.1002/mmce.20198}, url = {http://www3.interscience.wiley.com/cgi-bin/fulltext/113493159/PDFSTART}, author = {J A Ruiz-Cruz and Montejo-Garai, J R and Rebollar, J M and Zaki, K A} }