In this article, a simple approach for synthesis of coupling matrix of dual mode dual band filters is presented. Odd and even modes of dual mode cavities are used as basis of this coupling matrix. Each mode of cavities is coupled to the same mode...

In this paper, a compact, easy to fabricate single-feed multiple slotted square patch antenna is proposed to obtain dual-band Circular Polarization (CP) radiation patterns. To obtain dual operation, four T-shaped slits are inserted at the patch...

In this paper, we present a new dual band planar antenna. The proposed antenna consists of a microstrip patch with a U-shaped slot that is fed by a broadband electromagnetic coupling probe, known as L-probe. Radiation characteristics of the antenna...