Experimentally Validated, Planar, Wideband, Electrically Small, Monopole Filtennas Based on Capacitively Loaded Loop Resonators
- Publication Type:
- Journal Article
- IEEE Transactions on Antennas and Propagation, 2016, 64 (8), pp. 3353 - 3360
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|Tang-Chen-Ziolkowski_Filtenna_IEEE-TAP_Aug_2016.pdf||Accepted Manuscript Version||1.58 MB|
|Experimentally validated, planar, wideband, electrically small, monopole filtennas based on capacitively loaded loop resonators.pdf||1.61 MB|
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© 2016 IEEE. Two planar efficient wideband electrically small monopole filtennas are presented. The first one directly evolved from a common planar capacitively loaded loop (CLL)-based filter. This filtenna possesses a flat realized gain response within the operational band and good band-edge selectivity. The second filtenna consists of a driven element augmented with a CLL structure and with slots etched into its ground plane. It expands the fractional impedance bandwidth of the first case from 6.28% up to 7.9%. It too has a gain response that remains flat over its operational bandwidth and even higher band-edge selectivity. Both filtennas are electrically small: ka < 1. The experimental results, which are in good agreement with their simulated values, demonstrate that both filtennas exhibit excellent impedance matching, high radiation efficiency, flat gain response, and steep skirts at both band edges, as well as producing monopole radiation patterns that are uniform and nearly omnidirectional in their H-planes.
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