Transmission-line coupling of active microstrip antennas for one- and two-dimensional phased arrays

Ragip Ispir; Shigeji Nogi; Minoru Sanagi; Kiyoshi Fukui

Transmission-line coupling of active microstrip antennas for one- and two-dimensional phased arrays

Ragip Ispir, Shigeji Nogi, Minoru Sanagi, Kiyoshi Fukui

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

Abstract

Several types of transmission-line coupling are analyzed to use in one- and two-dimensional active antenna arrays, and a method is developed to scan the beam of the arrays using the mutual locking theory. To compensate the undesired effect of strong radiative coupling of the nearest neighbor elements on the phased array performance, addition of resistive stubs to the end elements is proposed. In a 1 x4 array it was observed that after the connection of resistive stubs, the scanning range of the array increased considerably. The effect of oscillator amplitudes on the phased array behavior is explored numerically. In the experiments main beam of 2 x 2 and 3x3 active antenna arrays were steered up to 25° and 15°, respectively in the H-plane.

Original language	English
Pages (from-to)	1211-1219
Number of pages	9
Journal	IEICE Transactions on Electronics
Volume	E80-C
Issue number	9
Publication status	Published - Jan 1 1997

Keywords

Active antenna
Microwave
Phased array
Power combining
Transmission-line coupling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

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AU - Nogi, Shigeji

AU - Sanagi, Minoru

AU - Fukui, Kiyoshi

PY - 1997/1/1

Y1 - 1997/1/1

N2 - Several types of transmission-line coupling are analyzed to use in one- and two-dimensional active antenna arrays, and a method is developed to scan the beam of the arrays using the mutual locking theory. To compensate the undesired effect of strong radiative coupling of the nearest neighbor elements on the phased array performance, addition of resistive stubs to the end elements is proposed. In a 1 x4 array it was observed that after the connection of resistive stubs, the scanning range of the array increased considerably. The effect of oscillator amplitudes on the phased array behavior is explored numerically. In the experiments main beam of 2 x 2 and 3x3 active antenna arrays were steered up to 25° and 15°, respectively in the H-plane.

AB - Several types of transmission-line coupling are analyzed to use in one- and two-dimensional active antenna arrays, and a method is developed to scan the beam of the arrays using the mutual locking theory. To compensate the undesired effect of strong radiative coupling of the nearest neighbor elements on the phased array performance, addition of resistive stubs to the end elements is proposed. In a 1 x4 array it was observed that after the connection of resistive stubs, the scanning range of the array increased considerably. The effect of oscillator amplitudes on the phased array behavior is explored numerically. In the experiments main beam of 2 x 2 and 3x3 active antenna arrays were steered up to 25° and 15°, respectively in the H-plane.

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KW - Microwave

KW - Phased array

KW - Power combining

KW - Transmission-line coupling

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Transmission-line coupling of active microstrip antennas for one- and two-dimensional phased arrays

Abstract

Keywords

ASJC Scopus subject areas

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