Design of Miniaturized On-Chip Diamond Grid Antenna Based on CMOS 65nm Technology

On-chip antenna is a crucial module in the integrated RF chip systems, which is used to receive and transmit wireless signals. However, the miniaturization technology of on-chip antenna is still a challenging issue. To alleviate this issue, a compact 94 GHz on-chip diamond grid antenna based on CMOS 65 nm technology is presented in this work. Specifically, to enhance the performance of proposed antenna, a power distribution network is used as the excited device, and an imaginary ground plane is constructed to achieve the function of image antenna for improving the gain. The simulated results show the return loss lower than −10 dB from 91.6 GHz to 98.5 GHz (i.e. 7.22 % relative bandwidth with the operating central frequency being 94.8 GHz). Meanwhile, the efficiency and peak gain of the proposed on-chip antenna are 96.6% and 5.2dB, respectively. Compared with the traditional rectangular-based GAA, the size of the proposed antenna is reduced by one-third. It is expected that the proposed on-chip diamond GAA is able to be used as a suitable candidate for 94 GHz wireless applications.