A Phase Correcting Surface Based on a D-Band Transmitarray Antenna Using Hybrid-PCB-CMOS Technology

This papers presents a high-gain, wideband antenna for D-Band applications, designed using a hybrid-PCB-CMOS packaging technology and optimized through an in-house numerical tool. The proposed transmitarray consists of 400 unit cells with 1-bit phase quantization, arranged in a regular square lattice and illuminated by a horn antenna as the focal source. Simulations and analytical calculations demonstrate that the proposed antenna system achieves a peak gain of 19.5 dBi, with an absolute bandwidth of 30 GHz, corresponding to a fractional bandwidth of 26.7%. The accuracy of the numerical model is validated by simulating the antenna using HFSS, where full-wave simulation results closely match with the analytical predictions, confirming the efficacy of the design process. Additionally, we are extending this technology by integrating CMOS switches into the unit cells to implement a 1-bit reconfigurable transmitarray antenna for beam-scanning applications. This work contributes to the development of advanced and programmable antenna technologies for future 6G networks.