Reconfigurable dual-band patch antenna using varactor-loaded slot
This paper introduces a new approach to design a microstrip patch antenna with reconfigurable dual band operation. Dual-band is achieved by the placement of a lumped capacitor on a slotted patch antenna, and the two resonant frequencies and their ratio are function of the capacitance value. Conseque...
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Format: | Tagungsbericht |
Sprache: | eng |
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Zusammenfassung: | This paper introduces a new approach to design a microstrip patch antenna with reconfigurable dual band operation. Dual-band is achieved by the placement of a lumped capacitor on a slotted patch antenna, and the two resonant frequencies and their ratio are function of the capacitance value. Consequently, tuning of both frequencies is allowed by choosing proper capacitor value. If a varactor with an appropriate biasing network is used instead, electronic tuning is attained by changing the applied DC voltage. To understand the dual resonance behavior of the proposed antenna, a transmission line (TL) model with the wheeler incremental volume concept is established and validated with full wave simulation. The antenna shows 1.35-1.73 tunable frequency ratio with 0.5-1.1 pF capacitance. Moreover, the radiation patterns are similar at both bands. |
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ISSN: | 1522-3965 1947-1491 |
DOI: | 10.1109/APS.2012.6348539 |