Ring-coupled-oscillator sequentially rotated active antenna

In this paper, an active four-element patch antenna, backed by four GaAs monolithic-microwave integrated-circuit (MMIC) 4.4-GHz oscillators, self-locked by mutual coupling through a lumped capacitive ring MMIC network, has been designed, fabricated, and tested. The sequentially rotated arrangement g...

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Bibliographic Details
Published inIEEE transactions on microwave theory and techniques Vol. 49; no. 8; pp. 1492 - 1497
Main Authors Suidong Yang, Fusco, V.F., Humphrey, D.E.J.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.08.2001
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Antenna arrays
Antennas
Circular polarization
Entrainment
Frequency
Gallium arsenide
Injection-locked oscillators
Microwave antenna arrays
Microwave oscillators
Microwaves
MMICs
Mutual coupling
Networks
Oscillators
Phased arrays
Polarization
Ring oscillators
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Summary:In this paper, an active four-element patch antenna, backed by four GaAs monolithic-microwave integrated-circuit (MMIC) 4.4-GHz oscillators, self-locked by mutual coupling through a lumped capacitive ring MMIC network, has been designed, fabricated, and tested. The sequentially rotated arrangement given here when augmented with a lumped capacitive coupling network suggests that in-phase oscillator entrainment is guaranteed so that spatial power combination by the antenna array occurs with circular polarization characteristics.
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ISSN:0018-9480
1557-9670
DOI:10.1109/22.939931