Journal of electromagnetic engineering and science

The Korean Institute of Electromagnetic Engineering and Science (한국전자파학회)
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Design of 60 ㎓ Millimeter-Wave Frequency Doubler using Distributed Structure

  • Park, Won (Dept. of Electronics of Engineering, University of Incheon) ;
  • Lee, Kang-Ho (Dept. of Electronics of Engineering, University of Incheo) ;
  • Kim, Sam-Dong (Dept. of Electronics of Engineering, Dongguk University) ;
  • Park, Hyung-Moo (Dept. of Electronics of Engineering, Dongguk University) ;
  • Rhee, Jin-Koo (Dept. of Electronics of Engineering, Dongguk University) ;
  • Koo, Kyung-Heon (Dept. of Electronics of Engineering, University of Incheon)
  • Published : 2004.06.01
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Abstract

A millimeter-wave distributed frequency doubler has been designed with distributed block and frequency tunable output reflectors. The simulated conversion loss of 9.5 ㏈ to 7.7 ㏈ from 54.6 ㎓ to 62.4 ㎓ output frequencies is achieved with fundamental and third harmonic signal rejections of more than 10 ㏈c. The fabricated chip has the size of 1.2 mm${\times}$1.0 mm. Some measured results of frequency and bias dependent characteristics are presented for the fabricated PHEMT MMIC frequency doubler. The designed doubler has two transistors, and if one of the transistors fails the doubler unit still operates with reduced gain. The failure effect of the PHEMT has been simulated, and compared to the measured data of which one PHEMT is not operating properly.

Keywords

References

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