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Advances in Electrical Engineering
Table of Contents
Advances in Electrical Engineering
/
2014
/
Article
/
Tab 3
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Research Article
Design of Tunable Monopole Arm Planar Spiral Antenna for Cognitive Radio
Table 3
Resonated frequencies for different diode ON-OFF conditions in ground plane.
Diode ON
Diode OFF
Resonant frequencies (GHz)
Selective band/wideband
D1
D2, D3
{1.89, 2.63, 3.23, 3.66, 3.82, 4, 4.38, 4.99, 5.28, 5.64}/{6.15–10}
D1, D2
D3
{1.89, 2.38, 2.63, 3.28, 3.42, 3.66, 3.84, 4, 4.39, 4.98, 5.32, 5.64}/{6.15–10}
D1, D2, D3
—
{1.19, 1.72, 2.15, 2.33, 2.62, 3.26, 3.66, 3.85, 4, 4.42, 4.97, 5.33, 5.63}/{6.13–10}