![Polarized Polarized](/uploads/1/2/6/3/126358718/786823641.jpg)
A novel single-feed dual-band microstrip antenna with omnidirectional circularly polarized (CP) and unidirectional linearly polarized (LP) characteristics for each band is proposed in this paper. The function of dual-band dual-mode is realized based on loading modified mushroom structure. By employing curved branches in the radiating patch, CP property for the omnidirectional zeroth-order resonance (n = 0 mode) is achieved. As the curved branches have little effect on the radiation pattern of patch mode, LP property for n = +1 mode stays the same. A prototype is fabricated to verify the properties of the antenna. Both simulation and measurement results illustrate that this antenna is valuable in practical application for its low-profile, radiation pattern selectivity and polarization diversity.
![Dual Band Circularly Polarized Patch Antenna Dual Band Circularly Polarized Patch Antenna](https://www.researchgate.net/profile/Mukesh_Khandelwal2/publication/275477592/figure/fig1/AS:294561277595648@1447240289193/Fig-1-Schematic-representation-of-single-feed-dual-band-stacked-microstrip-antenna-a.png)
Development of high-gain wideband circularly polarized patch antenna”,Proc. Of IEEE International RF and Microwave conference, pp. 109-111, 2008. Gaafar and A. Elaziz, “Dual Band Circularly Polarized Microstrip Patch Antenna for Wi-Fi”, Proc. Of International.