A design of asymmetric double T-type microstrip antennas

In this paper presents asymmetric double T-type microstrip stub antenna for integrated circuits such as MMIC is designed and fabricated. A new configuration of modified stub microstrip antenna for a wide band with an omni-directional pattern is proposed. It is called asymmetric double T-type microstrip stub antenna, in this paper. By properly choosing the gap of between stubs and the length of the upper/low stub, the resonation frequency can be shifted. The antenna impedance bandwidth of about 620MHz can be obtained for using an IMT2000 frequency band. The characteristics of the proposed antenna were analyzed using FDTD methods.