Wide Angle Phase-Shifterless Beam Scanning in Unilaterally Coupled Active Antenna Arrays

Ragip Ispir; Shigeji Nogi; Minoru Sanagi

Wide Angle Phase-Shifterless Beam Scanning in Unilaterally Coupled Active Antenna Arrays

Ragip Ispir, Shigeji Nogi, Minoru Sanagi

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

Abstract

In coupled oscillator arrays, it is possible to control the inter-element phase shift up to 180° by free-running frequency distribution based on injection-locking phenomenon. In this paper, a new technique to control the inter-element phase shift electronically up to the maximum extent of 360° is reported. Oscillators are unilaterally coupled to the preceding oscillator through one of the two paths, which differ from each other 180° in electrical length and each includes an amplifier. Turning on the desired amplifier one can control the phase shift either -180° to 0° or 0° to 180°. The technique was applied in a three-element oscillator array each coupled to a patch antenna via a round aperture. The radiation beam of the array could be scanned 47° in total.

Original language	English
Pages (from-to)	1188-1194
Number of pages	7
Journal	IEICE Transactions on Electronics
Volume	E82-C
Issue number	7
Publication status	Published - Jan 1 1999

Keywords

Active antenna
Beam scanning
Coupled oscillators
Phased array
Spatial power combining
Unilateral coupling

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Electrical and Electronic Engineering

Access to Document

Fingerprint Dive into the research topics of 'Wide Angle Phase-Shifterless Beam Scanning in Unilaterally Coupled Active Antenna Arrays'. Together they form a unique fingerprint.

Cite this

@article{4d69b91b059b41aba0b3ae971d9c04e5,

title = "Wide Angle Phase-Shifterless Beam Scanning in Unilaterally Coupled Active Antenna Arrays",

abstract = "In coupled oscillator arrays, it is possible to control the inter-element phase shift up to 180° by free-running frequency distribution based on injection-locking phenomenon. In this paper, a new technique to control the inter-element phase shift electronically up to the maximum extent of 360° is reported. Oscillators are unilaterally coupled to the preceding oscillator through one of the two paths, which differ from each other 180° in electrical length and each includes an amplifier. Turning on the desired amplifier one can control the phase shift either -180° to 0° or 0° to 180°. The technique was applied in a three-element oscillator array each coupled to a patch antenna via a round aperture. The radiation beam of the array could be scanned 47° in total.",

keywords = "Active antenna, Beam scanning, Coupled oscillators, Phased array, Spatial power combining, Unilateral coupling",

author = "Ragip Ispir and Shigeji Nogi and Minoru Sanagi",

year = "1999",

month = jan,

day = "1",

language = "English",

volume = "E82-C",

pages = "1188--1194",

journal = "IEICE Transactions on Electronics",

issn = "0916-8524",

publisher = "The Institute of Electronics, Information and Communication Engineers (IEICE)",

number = "7",

}

TY - JOUR

T1 - Wide Angle Phase-Shifterless Beam Scanning in Unilaterally Coupled Active Antenna Arrays

AU - Ispir, Ragip

AU - Nogi, Shigeji

AU - Sanagi, Minoru

PY - 1999/1/1

Y1 - 1999/1/1

N2 - In coupled oscillator arrays, it is possible to control the inter-element phase shift up to 180° by free-running frequency distribution based on injection-locking phenomenon. In this paper, a new technique to control the inter-element phase shift electronically up to the maximum extent of 360° is reported. Oscillators are unilaterally coupled to the preceding oscillator through one of the two paths, which differ from each other 180° in electrical length and each includes an amplifier. Turning on the desired amplifier one can control the phase shift either -180° to 0° or 0° to 180°. The technique was applied in a three-element oscillator array each coupled to a patch antenna via a round aperture. The radiation beam of the array could be scanned 47° in total.

AB - In coupled oscillator arrays, it is possible to control the inter-element phase shift up to 180° by free-running frequency distribution based on injection-locking phenomenon. In this paper, a new technique to control the inter-element phase shift electronically up to the maximum extent of 360° is reported. Oscillators are unilaterally coupled to the preceding oscillator through one of the two paths, which differ from each other 180° in electrical length and each includes an amplifier. Turning on the desired amplifier one can control the phase shift either -180° to 0° or 0° to 180°. The technique was applied in a three-element oscillator array each coupled to a patch antenna via a round aperture. The radiation beam of the array could be scanned 47° in total.

KW - Active antenna

KW - Beam scanning

KW - Coupled oscillators

KW - Phased array

KW - Spatial power combining

KW - Unilateral coupling

UR - http://www.scopus.com/inward/record.url?scp=0033157896&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033157896&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:0033157896

VL - E82-C

SP - 1188

EP - 1194

JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

SN - 0916-8524

IS - 7

ER -