A Compact Triple Band Bent-Fork Shaped CPW-Fed Monopole Antenna for MIMO Applications

The design of a compact triple band bent-fork shaped CPW-fed monopole antenna for multiple-input multiple-output (MIMO) applications with a small size of 20 × 40 mm2 is introduced. The MIMO antenna comprises two similar elements each of that has adjusted bent-fork shaped radiating element with distinct arms lengths and a modified CPW stepped feed-line to produce the multiband functionality and enhance the input matching condition, respectively. The realized impedance bandwidth for l0 dB return loss is arranged in frequency bands of 1.78-2.26 GHz (%24.0), 4.86-5.82 GHz (%18), and 8.04-9.05 GHz (%12) which is respectively capable of supporting PCS/ Bluetooth, WLAN, and X-band usages. Antenna elements are placed orthogonally to gain a high isolation and low envelope correlation between the two input ports. Fine efficiency of the offered antenna over the working bands are also received. The results demonstrate which the antenna can be evaluated as a good choice for multiband MIMO systems.

کلیدواژه ها:

CPW-fed ، monopole antenna ، multiple-input multiple-output (MIMO) ، triple band