Ferroelectric-based pulse-shaping artificial transmission line

Hsiao Yun Li, Shiu Cheng Chen, Jia Shiang Fu

Research output: Contribution to journalArticlepeer-review

Abstract

An artificial transmission line with variable capacitors as its shunt elements, also known as a nonlinear transmission line, can be used to generate pulsed waveforms with short durations. In this work, the variable capacitors are implemented using ferroelectric materials. Analysis and experimental results of such a ferroelectric-based artificial transmission line are presented. The differential equation that describes the nonlinear transmission line is derived and solved. The analytical expression for the solitary waves propagating along the line is found. An artificial transmission line is fabricated using thin-film barium-strontium-titanate capacitors and commercially available chip inductors. The fabrication process of the ferroelectric-based artificial transmission line is described. On-wafer characterization of the line is performed. Measurement results show that, with proper dc bias and substantial input power, a sinusoidal input waveform turns into a bell-shaped pulse train at the output, demonstrating the pulseshaping capability of the ferroelectric-based artificial transmission line.

Original languageEnglish
Pages (from-to)28-34
Number of pages7
JournalIEICE Transactions on Electronics
VolumeE98C
Issue number1
DOIs
StatePublished - 1 Jan 2015

Keywords

  • Artificial transmission line
  • Ferroelectric varactor
  • Nonlinear transmission line
  • Pulse shaping
  • Soliton

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