Microstrip antenna controlled by p-i-n diodes: Influence of the bias current on the antenna efficiency

Microstrip antenna controlled by p-i-n diodes: Influence of the bias current on the antenna efficiency

This Letter points out the drop in radiation efficiency observed in active microstrip antennas with switching capabilities for inadequate values of the bias current. For a frequency agile antenna based on p‐i‐n diodes, a trade‐off between the dc consumption of the diodes and the antenna gain is demo...

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Veröffentlicht in:Microwave and optical technology letters 2002-04, Vol.33 (1), p.44-47
Hauptverfasser: Laheurte, J. M., Tosi, H., Dubard, J. L.
Format: Artikel
Sprache:eng
Schlagworte:
active antenna
p-i-n diodes
radiation efficiency
TLM modeling
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Zusammenfassung:This Letter points out the drop in radiation efficiency observed in active microstrip antennas with switching capabilities for inadequate values of the bias current. For a frequency agile antenna based on p‐i‐n diodes, a trade‐off between the dc consumption of the diodes and the antenna gain is demonstrated. It is also shown that this type of integrated active antenna can be reasonably predicted by a simple resistor model of the diode in a TLM analysis. © 2002 Wiley Periodicals, Inc. Microwave Opt Technol Lett 33: 44–47, 2002; DOI 10.1002/mop.10226
ISSN:0895-2477
1098-2760
DOI:10.1002/mop.10226