Volume: 73, Issue: 6, June 2025
Feng XieA 220-GHz Planar Triangular Lattice Transmitter Array With 42.7-dBm Peak EIRP for Long-Distance High-Data-Rate Wireless Communication
Abstract
DOI: 10.1109/TMTT.2024.3501391
IEEEXplore: https://ieeexplore.ieee.org/document/10774153
Device
Planar triangular lattice 4x4 transmitter array for super high EIRP with a multilayer waveguide package in a hybrid of technologies including a 130 nm SiGe BiCMOS process, a full-metal micromachining process, and a multilayer printed circuit board.
Spectrum
220 GHz
Novelty
A novel triangular lattice configuration is proposed and implemented using the array factor (AF) formula to design a 4x4 2D array with a large-spacing of 3.89 λ in the H-plane, exceeding the conventional 0.5 λ design limitation, and achieve high quality radiation with suppressed high-level side lobes. The array is complete with horn antenna elements, LO power divider elements and stepped waveguide elements.
The PCB with six metal layers facilitates TX chip mounting, vias, LO distribution, grounded-coplanar waveguide structures (GCWG), and substrate-integrated coaxial line (SICL) routing to enhance isolation and EMI resistance.
Application
THz wireless communication systems including WLAN, IoT, backhaul networks, high-data-rate space communications, and emerging nanoscale communication.
Performance
42.7 dBm peak effective isotropic radiated power (EIRP);
40 GHz 3-dB bandwidth, 18 Gbps real-time wireless data rate of 18 Gbps with16 QAM at 100 m.