Compact 4 element Sierpinski Knopp fractal UWB MIMO antenna with dual band notch

Abstract

Table 3 presents the comparison of the proposed parasitic patch array antenna in different literatures. 4,10,11 The parameters including number of layer and patch, the size of the antenna, the impedance bandwidth and the peak gain are taken into account. From the table, we can see that the 5 3 5 CPPS-based array antenna has the advantages of simple structure, wide bandwidth and high gain. | C ONCL US I ONThis article presents a design of a 5 3 5 array antenna based on coplanar parasitic patch structure. A feed network is formed via dual ports stimulating the two center patches and resonance branches between the central patches and the parasitic patches. The designed array antenna has a simple structure, high gain, strong orientation, and low crosspolarization. It has good reference value to the array antenna research. Therefore, it has important applications in communication and radar system.

A state-of-art review on band-notch characteristics in UWB antennas

“…Usually, a single parasitic element or slot can generate only one notched band and fails to meet the requirements of mitigating multiple interferences. In order to realize a dual band‐notched UWB antenna, different techniques like slotted geometries, parasitic elements and some other techniques are commonly used. These different methods are illustrated in the following sub‐sections.…”

“…Different slotted geometries are used for developing notch characteristics in antennas. By etching slots of different shapes either on the radiating patches or in the ground plane or on the feed line, various configurations of UWB antennas are proposed.…”

“…A UWB antenna based on CSRR is presented by Liu and Jiang for dual notch characteristics. Similarly, a four element MIMO antenna has been proposed with CSRR etched on the radiating element for developing dual notched‐band …”

“…Thus, on analyzing the above literatures, it can be noted that, in most of the cases the alphabetical slots takes over the notch characteristics. Table represents a brief description of different alphabetical geometries used for notch functioning.…”

“…Different slotted geometries are used for developing notch characteristics in antennas. By etching slots of different shapes either on the radiating patches [78][79][80][81][82][83][84][85][86][87][88][89][90][91][92][93][94][95] or in the ground plane [96][97][98][99][100][101][102] or on the feed line, [103][104][105][106][107][108][109][110][111][112] various configurations of UWB antennas are proposed.…”