Abstract

Hussein H. Ghouz
New Compact Circular Ring Microstrip Patch Antennas
In this paper, three different compact circular ring microstrip patch antenna structures have been proposed. These antennas have been analyzed, investigated &#97 &#110 &#100 optimized using the CST-MW-simulator. The proposed designs are mainly based on the concept of patch shape reconfiguration while its overall dimensions are kept constant. The objective is to design dual and/or triple broadband antennas resonate within the fourth generation band (4G). The presented antennas are simulated &#97 &#110 &#100 fabricated on cheaper &#97 &#110 &#100 lossy FR-4 substrate, &#97 &#110 &#100 their parameters are measured &#97 &#110 &#100 compared. The obtained results show that the proposed antenna structures resonate within the 4G frequency band. The operating bandwidths have been varied between 270.0 MHz &#97 &#110 &#100 1000.0 MHz (about 4% up to 7% of center frequency). In addition, maximum VSWR value of less than 1.5 has been achieved. The obtained results verify the validity &#97 &#110 &#100 the benefits of reconfiguring the patch shape. Finally, good agreement has been obtained between simulated &#97 &#110 &#100 measured parameters.