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K-band reflection-type phase shifter using phase-shift range enhancement technique

Author

Listed:
  • Han-Lim Lee
  • Seong-Mo Moon
  • Moon-Que Lee
  • Jong-Wo Yu

Abstract

This letter presents a simple but efficient phase shift range enhancement technique for a reflection type phase shifter (RTPS). The proposed structure consists of a 3-dB coupler and a pair of back-to-back diodes connected with a pair of series and parallel inductors and a pair of parallel resistors. The parallel inductors are inserted to widen relative phase shift range compared to regularly used RTPS and Lange coupler is used as the 3-dB coupler. The proposed circuit is implemented in 0.15 -μm GaAs low noise pHEMT process and provides a measured phase shifting range of 227° at 24 GHz with a measured insertion loss of 4.6 ± 1.3 dB. The input and output return losses are better than 18 dB and 17 dB, respectively. The size of the fabricated phase shifter MMIC chip is 2.2×1.5 mm2 including test pads.

Suggested Citation

  • Han-Lim Lee & Seong-Mo Moon & Moon-Que Lee & Jong-Wo Yu, 2013. "K-band reflection-type phase shifter using phase-shift range enhancement technique," Journal of Electromagnetic Waves and Applications, Taylor & Francis Journals, vol. 27(16), pages 2135-2144, November.
    • Handle: RePEc:taf:tewaxx:v:27:y:2013:i:16:p:2135-2144
    DOI: 10.1080/09205071.2013.833063
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