A Differential Dual-Polarized Cavity-Backed Microstrip Patch Antenna With Independent Frequency Tuning

A Differential Dual-Polarized Cavity-Backed Microstrip Patch Antenna With Independent Frequency Tuning

A dual-polarized cavity-backed microstrip patch antenna has been demonstrated with independent tuning of both polarizations from 0.6 GHz to ~1.0 GHz using varactor diodes (1.2-5.4 pF). The 10-dB impedance bandwidth varies from 0.9% to 1.8% over that range. Differential coaxial feeds and the placemen...

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Veröffentlicht in:IEEE transactions on antennas and propagation 2010-11, Vol.58 (11), p.3490-3498
Hauptverfasser: White, Carson R, Rebeiz, Gabriel M
Format: Artikel
Sprache:eng
Schlagworte:
Antennas
Applied sciences
Bandwidth
Cavity-backed antennas
Circuits
Dielectrics
dual-polarized antennas
Exact sciences and technology
Feeds
Impedance
Load modeling
Microstrip antennas
Noise levels
Patch antennas
Radiocommunications
reconfigurable antennas
Telecommunications
Telecommunications and information theory
Tuning
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Beschreibung
Zusammenfassung:A dual-polarized cavity-backed microstrip patch antenna has been demonstrated with independent tuning of both polarizations from 0.6 GHz to ~1.0 GHz using varactor diodes (1.2-5.4 pF). The 10-dB impedance bandwidth varies from 0.9% to 1.8% over that range. Differential coaxial feeds and the placement of the tuning varactors in the appropriate symmetry planes are employed to achieve a differential-mode port-to-port isolation of >28 dB over the tuning range. Accordingly, the cross-polarization level is
ISSN:0018-926X
1558-2221
DOI:10.1109/TAP.2010.2071364