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Ultrabroadband power amplifier using 16‐way spatial combining finline array
Author(s) -
Hosseini S. Esmail,
Banai Ali
Publication year - 2013
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.27321
Subject(s) - antipodal point , amplifier , power dividers and directional couplers , microwave , optics , wilkinson power divider , electrical engineering , power (physics) , microstrip , bandwidth (computing) , engineering , physics , telecommunications , frequency divider , mathematics , geometry , quantum mechanics
Abstract An ultrabroadband power amplifier using 16‐way spatial power divider/combiner that using a quasi‐TEM‐guided wave structure is designed. An oversized coaxial waveguide was used as the host of the dividing/combining circuits that incorporates an antipodal finline array. Galerkin's technique in the spectral domain was used to analyze the antipodal finline. The oversized TEM‐guided wave structure and antipodal transitions were designed using the theory of small reflection and near optimum design. A high power amplifier using 16 monolithic‐microwave integrated‐circuit power amplifiers is built. The measured results show 160% bandwidth impedance match covering the entire 2–18 GHz with maximum output power of 39 dBm CW (Continous Wave) and corresponding gain greater than 11 dB. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:454–460, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27321