Dual band-notch square monopole antenna with a modified ground plane for UWB applications

作者：Ojaroudi Nasser; Ojaroudi Mohammad^*

来源：Microwave and Optical Technology Letters, 2012, 54(12): 2743-2747.

DOI：10.1002/mop.27209

• square monopole antenna
• S-shaped slot
• dual band-notched function
• ultra wide band applications

This paper presents a novel small square monopole antenna for UWB applications with dual band-notch function. By cutting an S-shaped slot in the ground plane, additional resonance is excited and hence, much wider impedance bandwidth can be produced, especially at the higher band that provides a wide usable fractional bandwidth of more than 120% (2.9812.25 GHz). To generate a single frequency band-stop performance, we add a pair of C-shaped parasitic structures in the ground plane, and also in order to create the second notch frequency, we insert a horizontal rectangular strip in the center of two C-shaped parasitic structure in the ground plane. The measured results reveal that the presented dual band-notch monopole antenna offers a wide bandwidth with two notched bands, covering all the 5.2/5.8 GHz wireless local area network, 3.5/5.5 GHz WiMAX, and 4 GHz C bands. Good and radiation behavior within the UWB frequency range have also been obtained. The antenna has a small dimension of 12 x 18 mm2.

• 出版日期2012-12