Grid oscillators with selective-feedback mirrors

Grid oscillators with selective-feedback mirrors

Analytical and experimental results are presented that demonstrate the advantages of replacing the metal mirror of a C-band transistor-grid oscillator with two types of selective-feedback mirrors. The first mirror is a two-dimensional photonic crystal, whose frequency-, polarization-, and reflectivi...

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Veröffentlicht in:IEEE transactions on microwave theory and techniques 1998-12, Vol.46 (12), p.2324-2329
Hauptverfasser: Qi Sun, Horiuchi, J.B., Haynes, S.R., Miyashiro, K.W., Shiroma, W.A.
Format: Artikel
Sprache:eng
Schlagworte:
Dielectric substrates
Frequency
Gratings
Mirrors
Oscillators
Photonic crystals
Polarization
Reflectivity
Sun
Tunable circuits and devices
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Beschreibung
Zusammenfassung:Analytical and experimental results are presented that demonstrate the advantages of replacing the metal mirror of a C-band transistor-grid oscillator with two types of selective-feedback mirrors. The first mirror is a two-dimensional photonic crystal, whose frequency-, polarization-, and reflectivity-dependent characteristics result in higher radiated power, lower cross polarization, and improved locking. The second is a diode-loaded grating functioning as an electronically tunable mirror, which allows the oscillator to be amplitude-modulated.
ISSN:0018-9480
1557-9670
DOI:10.1109/22.739218