Triple band notched mushroom and uniplanar EBG structures based UWB MIMO/Diversity antenna with enhanced wide band isolation

Experimental Investigation of a Planar Antenna with Band Rejection Features for Ultra-Wide Band (UWB) Wireless Networks

“…UWB antennas of comparable size have been proposed in [18][19][20][21][22][23][24][25]; however these designs give band-notching in two frequency bands. The UWB antennas covered in [26][27][28][29][30][31] use relatively complex mechanisms to attain band rejection in triple frequency bands.…”

“…The average gain and radiation efficiency of the antenna in unnotched UWB spectrum vary from 1.13 dBi and 75%, respectively. In [30] a relatively larger (64 × 45 mm 2 ) UWB antenna has been proposed which is capable of band-notched features in the WiMAX, WLAN, and X-Band frequency bands. Mushroom and uniplanar electromagnetic bandgap (EBG) structures are used in the vicinity of the feedline to notch the three frequency bands.…”

“…In [25] different types of resonators have been printed on the ground plane to reject the ITU (7.8-8.4 GHz) and WLAN (5-5.4 GHz) frequency bands. In order to achieve triple band rejection within the UWB spectrum, various approaches [26][27][28][29][30][31] have been applied in the past; however controlling the bandwidth and gain of each notch band has been a challenging task. Each of the aforementioned approaches has its own pros and cons in terms of antenna size, design simplicity, and the type and number of notched frequency bands, which will be discussed in the next section.…”

The Design of a Compact Quintuple Band-Notched Uwb Antenna

“…In [17], by placing two asymmetrical structures on both sides of the feed line, adding a pair of circular arc strips symmetrically at the bottom of the radiation patch, and cutting a pair of inverted L-shaped slots on the ground plane, triple notch bands are achieved. In addition, several special methods are introduced [21][22][23][24][25]. In [21], two pairs of SRR elements are printed on the back side of a CPW-fed monopole antenna to produce dual band notched characteristics.…”

“…Four different structures of CSRR rings and a pair of SRR rings are distributed on the antenna to obtain five reject-bands [22]. EBG structures [23,24] and an electric ring resonator [25] are used to create stopband characteristics. It is a difficult task to introduce more notch elements in the limited space of a miniaturized UWB antenna and space the notch elements properly so as to reduce the mutual coupling between them, which will undoubtedly increase the difficulty of debugging.…”