Extended-stopband microstrip lowpass filter using rat-race directional couplers Academic Article 2013

http://ieeexplore.ieee.org/xpl/articleDetails.jsp?tp=&arnumber=6464682&sortType%3Ddesc_p_Publication_Year%26queryText%3Dtorregrosa

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authors

Roberto Gómez García
Miguel Ángel Sánchez Soriano
Manuel Sánchez Renedo
TORREGROSA PENALVA, GERMAN
BRONCHALO BRONCHALO, ENRIQUE

publication date

2013

published in

ELECTRONICS LETTERS Journal