Abstract
A phased array behavior of a unilaterally coupled active antennas has been investigated. The active antenna is composed of a patch antenna and a parallel feedback type oscillator which can be coupled unilaterally to other oscillators without other nonreciprocal components. Numerical calculations of the reduced equations describing the behavior of the coupled oscillators array demonstrated that the phase differences between the oscillators can be varied up to about π/2 by giving the frequency changes from the injection locking frequency to the oscillators except of the first one. The oscillator mounted with the varactor diode for wide tuning range exhibited the property suitable for constructing the unilaterally coupled array. In the experiments at X-band, the electromagnetic wave radiated from the five element array was successfully scanned.
| Original language | English |
|---|---|
| Pages (from-to) | 192-198 |
| Number of pages | 7 |
| Journal | IEICE Transactions on Electronics |
| Volume | E-86-C |
| Issue number | 2 |
| Publication status | Published - Feb 2003 |
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Keywords
- Active antenna
- Injection locking
- Microwave
- Phased array
ASJC Scopus subject areas
- Electrical and Electronic Engineering
Cite this
Phased array behavior of unilaterally coupled active antennas with varactor diodes. / Sanagi, Minoru; Kagawa, Tomomichi; Nogi, Shigeji.
In: IEICE Transactions on Electronics, Vol. E-86-C, No. 2, 02.2003, p. 192-198.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Phased array behavior of unilaterally coupled active antennas with varactor diodes
AU - Sanagi, Minoru
AU - Kagawa, Tomomichi
AU - Nogi, Shigeji
PY - 2003/2
Y1 - 2003/2
N2 - A phased array behavior of a unilaterally coupled active antennas has been investigated. The active antenna is composed of a patch antenna and a parallel feedback type oscillator which can be coupled unilaterally to other oscillators without other nonreciprocal components. Numerical calculations of the reduced equations describing the behavior of the coupled oscillators array demonstrated that the phase differences between the oscillators can be varied up to about π/2 by giving the frequency changes from the injection locking frequency to the oscillators except of the first one. The oscillator mounted with the varactor diode for wide tuning range exhibited the property suitable for constructing the unilaterally coupled array. In the experiments at X-band, the electromagnetic wave radiated from the five element array was successfully scanned.
AB - A phased array behavior of a unilaterally coupled active antennas has been investigated. The active antenna is composed of a patch antenna and a parallel feedback type oscillator which can be coupled unilaterally to other oscillators without other nonreciprocal components. Numerical calculations of the reduced equations describing the behavior of the coupled oscillators array demonstrated that the phase differences between the oscillators can be varied up to about π/2 by giving the frequency changes from the injection locking frequency to the oscillators except of the first one. The oscillator mounted with the varactor diode for wide tuning range exhibited the property suitable for constructing the unilaterally coupled array. In the experiments at X-band, the electromagnetic wave radiated from the five element array was successfully scanned.
KW - Active antenna
KW - Injection locking
KW - Microwave
KW - Phased array
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UR - http://www.scopus.com/inward/citedby.url?scp=0041360293&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:0041360293
VL - E-86-C
SP - 192
EP - 198
JO - IEICE Transactions on Electronics
JF - IEICE Transactions on Electronics
SN - 0916-8524
IS - 2
ER -