Electrically small antennas with miniaturized impedance matching circuits for semiconductor amplifiers

Keiji Yoshida; Yukako Tsutsumi; Haruichi Kanaya

doi:10.1093/ietele/e88-c.7.1368

Electrically small antennas with miniaturized impedance matching circuits for semiconductor amplifiers

Keiji Yoshida, Yukako Tsutsumi, Haruichi Kanaya

Integrated Electronic Systems

Research output: Contribution to journal › Article › peer-review

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 R_a= 0.776 Ω and a semiconductor amplifier with high input impedance of Z_L = 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 language	English
Pages (from-to)	1368-1374
Number of pages	7
Journal	IEICE Transactions on Electronics
Volume	E88-C
Issue number	7
DOIs	https://doi.org/10.1093/ietele/e88-c.7.1368
Publication status	Published - Jul 2005

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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10.1093/ietele/e88-c.7.1368

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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.",

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AB - 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.

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Electrically small antennas with miniaturized impedance matching circuits for semiconductor amplifiers

Abstract

All Science Journal Classification (ASJC) codes

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