Uwb-Mimo Antenna With Novel Stub Structure

Abstract

Abstract-A compact printed and planar Multiple-Input MultipleOutput (MIMO) for Ultra Wideband (UWB) communications is presented. Two circular disc monopole antenna elements constitute the proposed UWB-MIMO antenna operating over the frequency band of 3.2-10.6 GHz. The isolation between the antenna ports has been enhanced to the value of more than 15 dB throughout the frequency band of interest. This enhancement is achieved by taking the advantage of an inverted-Y shaped stub that is being inserted on the ground plane of UWB-MIMO antenna. The insertion of the stub has also facilitated reduction of the size of the antenna, i.e., overall dimensions of the antenna are 40 × 68 mm 2 . The proposed antenna is investigated both numerically and experimentally.

Compact Uwb Mimo Antenna With Acs-Fed Structure

“…Comparisons of the proposed antenna with those presented in [4][5][6][7][8][9][10][11] on antenna dimensions are given in Table 1. Significant reduction in size has been achieved with our antenna design.…”

“…Moreover, the bandwidth ratio of |S 21 | < −20 dB/UWB bandwidth is 64%, ranking in the middle among Refs. [4][5][6][7][8][9][10][11], which means that the proposed antenna has a good isolation performance. …”

Multiple-Input Multiple-Output Antennas for Ultra Wideband Communications

“…The best position of the stub is found to be the middle of the ground plane. The performance has been evaluated numerically and experimentally [63]. Figure 4 displays the measured and simulated reflection coeffcients for the antennas with stub and without stub.…”

Gain Enhancement of Uwb Mimo Antennas Using A High Isolation Technique

“…The UWB bandwidth ranges from 3.3-10. 4 GHz. This designed antenna operates well in the UWB band and throughout this bandwidth the isolation obtained is over 35 dB.…”