New Multi_Band Design for a Microstrip Patch Antenna

A new approach in designing a multi-band microstrip patch antenna is illustrated. The presented approach is based on combining a rectangular and a triangle patch with proper slots placed on each part. First, rectangular slots, following a Chebyshev distribution, are inserted into the rectangular patch and next, a triangular slot is inserted into the triangular patch. The new structure is fed by a coaxial probe with an input impedance of 50 Omega. A sample antenna was fabricated and tested and results showed a good agreement with the simulated ones. Furthermore, the size of the antenna was reduced by half to make the antenna more practical. This type of antenna can be used in several applications especially in the GSM domain and the Wi-Fi Bluetooth.