Electrically small antennas with miniaturized impedance matching circuits for semiconductor amplifiers

Keiji Yoshida, Yukako Tsutsumi, Haruichi Kanaya

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

In order to reduce the size of a wireless system, we propose a design theory for the broadband impedance matching circuit which connects an electrically small antenna (ESA) to a semiconductor amplifier. We confirmed its validity for the case of connection between a small slot loop antenna with a small radiation resistance of Ra= 0.776 Ω and a semiconductor amplifier with high input impedance of ZL = 321 - j871 Ω with the aid of the simulations by the electrical circuits using transmission lines as well as the electromagnetic field (EM field) simulator. We also made experiments on this antenna with matching circuits using high temperature superconductor YBCO thin films on MgO substrates.

Original languageEnglish
Pages (from-to)1368-1374
Number of pages7
JournalIEICE Transactions on Electronics
VolumeE88-C
Issue number7
DOIs
Publication statusPublished - Jan 1 2005

Fingerprint

Semiconductor materials
Antennas
Networks (circuits)
Loop antennas
Slot antennas
High temperature superconductors
Electromagnetic fields
Electric lines
Simulators
Radiation
Thin films
Substrates
Experiments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Electrically small antennas with miniaturized impedance matching circuits for semiconductor amplifiers. / Yoshida, Keiji; Tsutsumi, Yukako; Kanaya, Haruichi.

In: IEICE Transactions on Electronics, Vol. E88-C, No. 7, 01.01.2005, p. 1368-1374.

Research output: Contribution to journalArticle

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