Please use this identifier to cite or link to this item: https://hdl.handle.net/20.500.12104/42244
Title: Inductively loaded shorted patch antenna with reduced size
Author: Barrera, A.
Muramatsu, K.
Viveros, T.
Gomez, S.
Montoya, J.A.
del Angel, P.
Perez, G.
Campa-Molina, J.
Issue Date: 2009
Abstract: ?-Al2O3 modified supports with bimodal pore-size distributions were prepared by the addition of different types of natural sepiolites (? or ?) into alumina. The supports were characterized by nitrogen physisorption, mercury porosimetry, X-ray diffraction, HRTEM and DTA techniques. A wide range of SBET (94-238 m2 g- 1), pore volumes (0.3-0.82 cm3 g- 1), and pore sizes were obtained in the supports depending on the type of sepiolite and its concentration added into alumina. The pore sizes were distributed as follows: mesopores around 1.8 nm in radius, mesopores in the radius range 3.0-25 nm and macropores between 25 and 300 nm in radius. The shape of the pore-size distributions depended on the type of sepiolite: the modal peak for pores larger than 3.0 nm was broad with ?-type sepiolites and narrow with ?-type sepiolites. The mesopore and macropore sizes can be controlled by the type of sepiolite as well as its concentration added to alumina. " 2008 Elsevier B.V. All rights reserved.",,,,,,"10.1016/j.clay.2008.04.009",,,"http://hdl.handle.net/20.500.12104/42244","http://www.scopus.com/inward/record.url?eid=2-s2.0-56749157674&partnerID=40&md5=9adaac0af5e620c6f3b4497262f4ad0a",,,,,,"03-abr",,"Applied Clay Science",,"415
421",,"42",,"Scopus
WOS",,,,,,"Bimodal pore-size distributions; Crystal structure; Mercury porosimetry; Nitrogen sorption isotherms; Sepiolite-alumina interactions; Sepiolite-modified alumina supports",,,,,,"Influence of the type of sepiolite on the modification of the pore-size distribution in ?-Al2O3 supports",,"Article" "44028","123456789/35008",,"Ceja Martínez, Jorge Universidad de Guadalajara",,"Ceja Martínez, Jorge Universidad de Guadalajara",,"2000",,,,,,,,,,"1665-0875","http://hdl.handle.net/20.500.12104/42249",,,"Español",,,,"1",,"Geocalli (UDEG)",,"65-105",,"1",,"CLASE",,,,,,,,"Gobierno",,,,"El PRONASOL y la irregularidad urbana en Ciudad Guzmán",,"journalArticle" "43991","123456789/35008",,"Palacios, M.S.R., Departamento de Electrónica, Centro Universitario de Ciencias Exactas e Ingenierias, Universidad de Guadalajara, Jalisco, Mexico; Silva, M.J.M., Departamento de Electrónica, Centro Universitario de Ciencias Exactas e Ingenierias, Universidad de Guadalajara, Jalisco, Mexico",,"Palacios, M.S.R.
Silva, M.J.M.",,"2009",,"A shorted patch antenna with inductive loading for size reduction is presented. To improve input matching characteristics, a small inverted L antenna is appended at the shorted side of the patch. The transmission line model of the structure is used for predicting input impedance of the antenna. A design example is carried out for the 2.4 GHz ISM band. Calculated S11 parameter is compared and agrees well with simulation results. A near omnidirectional radiation pattern is obtained with a gain of 1.26dBi. An area reduction of approximately 80% was obtained respect to the ?/2 rectangular patch antenna. "2009 IEEE.
URI: http://hdl.handle.net/20.500.12104/42212
http://www.scopus.com/inward/record.url?eid=2-s2.0-76149094188&partnerID=40&md5=813ce0c74e7f12ead21f9886bb4d83c6
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