Design of electromagnetically coupled microstrip slot antenna by FDTD-equivalent circuit method

Author

Iwasaki, Takashi ; Suga, Hiroyoshi

Author_Institution

Univ. of Electro-Commun., Tokyo, Japan

fYear

2000

fDate

2000

Firstpage

731

Lastpage

734

Abstract

A method for designing an electromagnetically coupled microstrip slot antenna is investigated. The method is based on an equivalent circuit approach, in which the slot part of the antenna is analysed by the FDTD method and the stub part is regarded as a transmission line. The antennas are designed in the 2-10 GHz range by this method. The reflection coefficients are measured using a network analyser with its Through-Reflect-Line (TRL) calibration. As a result, it is pointed out that this method is applicable under the condition that the length of the stub is longer than the width of the microstrip. It is also shown that offset feeding is effective in reducing the restriction of the stub length

Keywords

antenna theory; electromagnetic coupling; equivalent circuits; finite difference time-domain analysis; impedance matching; microstrip antennas; slot antennas; 2 to 10 GHz; EM coupled microstrip slot antenna; FDTD-equivalent circuit method; TRL calibration; electromagnetically coupled microstrip slot antenna; microstrip stub part; network analyser; offset feeding; reflection coefficients; transmission line; Antenna accessories; Coupling circuits; Design methodology; Distributed parameter circuits; Electromagnetic coupling; Equivalent circuits; Finite difference methods; Microstrip antennas; Slot antennas; Transmission line antennas;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference, 2000 Asia-Pacific

Conference_Location

Sydney, NSW

Print_ISBN

0-7803-6435-X

Type

conf

DOI

10.1109/APMC.2000.925937

Filename

925937