Adaptive calibration method in multiport amplifier for K-band payload applications

Seong Mo Moon, Dong Hwan Shin, Hong Yul Lee, Man Seok Uhm, In Bok Yom, Moon Que Lee

Research output: Contribution to journalArticlepeer-review

11 Scopus citations


This letter proposes a novel calibration method for a multiport amplifier (MPA) to achieve optimum port-to-port isolation by correcting both the amplitude and phase of the calibration signals. The proposed architecture allows for the detection of the phase error and amplitude error in each RF signal path simultaneously and can enhance the calibrated resolution by controlling the analog phase shifters and attenuators. The designed 2×2 and 4×4 MPAs show isolation characteristics of 30 dB and 27 dB over a frequency range of 19.5 GHz to 22.5 GHz, respectively.

Original languageEnglish
Pages (from-to)718-721
Number of pages4
JournalETRI Journal
Issue number4
StatePublished - Aug 2013


  • Attenuator
  • Calibration
  • Drive amplifier
  • Microwave monolithic integrated circuit (MMIC)
  • Multiport amplifier (MPA)
  • Phase shifter
  • Port-to-port isolation


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