AlGaN/GaN-based SAW delay-line oscillators

Surface acoustic wave filters fabricated on AlGaN/GaN heterostructures allow the control of their insertion losses through external voltages applied to the interdigital transducers. A novel SAW delay‐line oscillator based on an AlGaN/GaN‐on‐sapphire SAW device with an oscillation frequency of 475 MH...

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Bibliographic Details
Published in:Microwave and optical technology letters 2008-11, Vol.50 (11), p.2967-2970
Main Authors: Jesús Grajal, Calle, Fernando, Pedrós, Jorge, Martínez-Chacón, José Luis, Jiménez, Ana
Format: Article
Language:English
Subjects:
AlGaN/GaN heterostructures
SAW delay-line oscillators
SAW devices
voltage-controlled SAW filters
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Summary:Surface acoustic wave filters fabricated on AlGaN/GaN heterostructures allow the control of their insertion losses through external voltages applied to the interdigital transducers. A novel SAW delay‐line oscillator based on an AlGaN/GaN‐on‐sapphire SAW device with an oscillation frequency of 475 MHz has been developed. Its waveform compression is controlled by varying the insertion losses of the active SAW filter. A small temperature coefficient of delay of 17.5 ppm/°C has been obtained. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 50: 2967–2970, 2008; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.23852
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.23852