A Self-Packaged Suspended Coplanar Waveguide Leaf-Shaped Wideband Filtenna.

In this letter, a multilayer self-packaged suspended coplanar waveguide (SCPW) leaf-shaped wide slot wideband filtenna is proposed by using leaf-shaped feeding source and three-line couplings. The filtenna is designed working at 3.2 GHz with a fractional bandwidth of 52.3% and a gain of 4.02 dBi, and a pair of gain zeros which are used for improving frequency selectivity and suppressing the out-of-band spurious harmonics have been realized because of the introduced filtering circuit. The proposed filtenna has been fabricated and measured, and the experimental results approach to the predictions, while the advantages of wide bandwidth, high gain flatness, high frequency selectivity, and stable radiation pattern have been demonstrated. [ABSTRACT FROM AUTHOR]