Abstract
AbstractIn 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
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