A compact CPW resonator cell with dual-bandgap characteristics

Abstract

In this paper, a compact coplanar waveguide (CPW) resonant cell is introduced, which can exhibit dual-bandgap characteristics by only single unit. The same pattern has been adopted in the microstrip line as reported previously and here is applied to CPW. Experimental results show good agreement with numerical results. By alternating the relative position between CPW defected ground structure (DGS) and split-ring resonator (SRR), the separation between the two resonant frequencies can be controlled easily.

Development of ground-based LIDAR measurement system based on BeiDou/GNSS positioning and 5G technologies

“…The embedded microcontroller decodes the time information into a timestamp and synchronizes the time information to the LIDAR and the high-precision motor using the self-developed time synchronization module [13][14] . Through the 5G module, the real-time scanning data is sent to the remote terminal, which receives the data and performs multi-frame registration of the point cloud through linear interpolation algorithm points, followed by coarse registration of the multi-station laser point cloud according to BeiDou/GNSS coordinates and fine registration using the Rodriguez matrix to complete the overall registration [15][16][17] . The aligned laser point cloud data are segmented and formatted to obtain the data format supported by the real-time point cloud management and visualization system and combined with the LOD scheduling strategy to realize the laser point cloud data visualization.…”