Performance Analysis of Novel Multi-band Monopole Antenna for Various Broadband Wireless Applications
Hiwa Taha Sediq, Yasser Nozad Mohammed
Abstract
Abstract This study investigates a novel concept of using slot and Coplanar Waveguide fed antenna to obtain multiband operation. The compact antenna includes a star monopole patch with a slit gap and a Star-shape slot on the patch as the radiating part and Dual Square shaped slots on the material as the ground plane. The presentation of techniques in the star-shaped patch and ground plane expands the total length of the current path. This increasing makes the multiband antenna to operate at 4.9 (WLAN), 5.9 (upper WiMAX), 8.2 (satellite TV), 11.8 (X-band) and 17.7 GHz (Ku-band), respectively. The antenna has a physical dimension of $$0.32\lambda_{0} \times 0.24\lambda_{0} \times 0.01\lambda_{0} = (20 \times 15 \times 1)$$ <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mn>0.32</mml:mn><mml:msub><mml:mi>λ</mml:mi><mml:mn>0</mml:mn></mml:msub><mml:mo>×</mml:mo><mml:mn>0.24</mml:mn><mml:msub><mml:mi>λ</mml:mi><mml:mn>0</mml:mn></mml:msub><mml:mo>×</mml:mo><mml:mn>0.01</mml:mn><mml:msub><mml:mi>λ</mml:mi><mml:mn>0</mml:mn></mml:msub><mml:mo>=</mml:mo><mml:mrow><mml:mo>(</mml:mo><mml:mn>20</mml:mn><mml:mo>×</mml:mo><mml:mn>15</mml:mn><mml:mo>×</mml:mo><mml:mn>1</mml:mn><mml:mo>)</mml:mo></mml:mrow></mml:mrow></mml:math> mm 3 , at the minimum frequency of 4.9 GHz. The proposed configuration operates at 4.9, 5.9, 8.2, 11.8 and 17.7 GHz with bandwidth (S 11 < −10 dB) of about 90%, 74.7%, 53.8%, 8.4% and 4.7%, respectively for simulation part. The antenna exhibits measured bandwidth (S 11 < −10 dB) of about 108%, 84%, 64%, 9%, and 7% at resonant frequencies of 4.69, 6.03, 7.99, 11.88, and 17.53 GHz, respectively. The stability of the radiation features, VSWR < 1.5 and good agreement impedance are noticed across the operating bandwidth of the multiband antenna.