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A high‐power amplifier using photonic bandgap and coplanar waveguide
Author(s) -
Seo Chulhun
Publication year - 2002
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.10689
Subject(s) - amplifier , coplanar waveguide , intermodulation , impedance matching , materials science , optoelectronics , microwave , electrical impedance , rf power amplifier , return loss , electrical engineering , electronic engineering , engineering , telecommunications , cmos , antenna (radio)
In this paper, an R‐band hybrid amplifier with a coplanar‐waveguide (CPW) and photonic‐bandgap (PBG) structure is designed and fabricated. We use PBG and CPW simultaneously in the amplifier to improve power‐added efficiency (PAE) and intermodulation distortion (IMD) in the R‐band. In this paper, the PBG structures are optimized to obtain a matching network. The output impedance of amplifier and the input impedance of PBG are matched to minimize the return loss. The PAE and IMD were improved by 15% and 4.5 dB, respectively, compared with a conventional amplifier. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 36: 108–110, 2003; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.10689