Design and simulation of novel microstrip Bluetooth antenna

With the rapid development of Bluetooth wireless communication, it´s highlighted now to applying micro-electro-mechanical systems (MEMS) technique in the radio frequency (RF) field to manufacture broadband Bluetooth antennas. The 10 dB bandwidth and efficiency of the micromachined Bluetooth antenna designed in this paper are more than 11% and 68% respectively; the length is less than 1/10 wavelength. The alternating direction implicit finite-difference time-domain (ADI-KDTD) method for a full three-dimensional (3-D) wave presented is used for modeling and analyzing the micromachine antenna for the first time. Numerical simulation results are compared to those using the conventional 3D finite-difference time-domain (FDTD) method. It is more efficient than the conventional 3-D FDTD method in terms of the central processing unit time if the size of the local minimum cell in the computational domain is much smaller than the other cells and the wavelength.