A novel filtering diplexing antenna for dual-band operation is presented. The antenna is composed of a slot-loaded patch and two resonators with a commonly used ground. Dog-bone-shaped slots are used on the ground for achieving broadside magnetic coupling and increasing the isolation between operating bands. The antenna design is based on a second-order Chebyshev bandpass filter synthesis. The proposed antenna exhibits high band-edge selectivity performance, low cross-polarization levels with half-power beamwidths greater than 86° for 2.4-and 5.2-GHz WLAN communication bands. The measured and simulated results are highly consistent.Index Terms-band-edge selectivity, Chebyshev bandpass filter, diplexer, filtering diplexing antenna.

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