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 - 1999 |
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Keywords
- Active antenna
- Beam scanning
- Coupled oscillators
- Phased array
- Spatial power combining
- Unilateral coupling
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Wide Angle Phase-Shifterless Beam Scanning in Unilaterally Coupled Active Antenna Arrays. / Ispir, Ragip; Nogi, Shigeji; Sanagi, Minoru.
In: IEICE Transactions on Electronics, Vol. E82-C, No. 7, 1999, p. 1188-1194.Research output: Contribution to journal › Article
}
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
Y1 - 1999
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
VL - E82-C
SP - 1188
EP - 1194
JO - IEICE Transactions on Electronics
JF - IEICE Transactions on Electronics
SN - 0916-8524
IS - 7
ER -