## 1 Introduction
The cooling performance of a cold plate can be improved and enhanced by the special configuration design of the coolant flow channel, such as the fin structures, serpentine-channel configuration, micro-channel and porous structures (tetrakaidecahedron-like unit cell structures), and the Rhombi-Octet unit cell. The topics of how to enhance cooling efficiency by a splitter design and the adoption of cooling fluid (e.g., water, glycol solution, silicone oil, nano fluids) have been discussed in related studies [1; 2; 4; 5; 6]. The aforementioned high heat transfer liquid cooling technique (cold plate) is generally used in the thermal management system of electronic power modules, such as the engine of new generation electric vehicles, electromotors and robots, and for new-generation communication and telecommunication systems. The radio frequency of a high-performance millimeter wave Transmit/Receive (T/R) antenna module transfers high-power pulse signals to the antenna by converting electricity into high-power electromagnetic wave signals. When the energy of the power amplifier of the power equipment increases continuously, the electronic equipment needs to be cooled down and maintained by a high heat transfer liquid cooling system, at a safe temperature, so as to maximize the efficiency and stability of the equipment. [PERSON] et al. simulated a cold plate with liquid impinging jet flow to analyze the cooling performance under configurations of fins in different geometric shapes and working fluids [1]. Their 3D model, based on a single-phase or two-phase flow, can visualize the temperature distribution of the cold plate and fluid flow behavior, and analyze the influences of heat flux, the mass flow rate of the coolant, as well as the heat source area on thermal resistance. Their findings showed that the input power, the coolant mass flow rate, the heat source area, the geometric shape of the fins, and the coolant type have significant impacts on the overall thermal performance of the cold plate heat sink. In terms of experimental validation, some studies used the jet impingement technique to design a cooling performance test platform, and liquid impinging cold plates of different fin shapes (conical, circular, and rectangular) to test their thermal diffusion [2]. The experimental results showed that the fin shape of a cold plate affects the overall thermal resistance, and that a circular fin has a better cooling performance. The experimental results are helpful for analyzing the cooling performance, the thermal resistance, and the spreading resistance of a cold plate heat sink for electronic products. [PERSON] et al. [3] employed multi-domain modeling architecture to analyze the cooling performance of a cold plate of a 6s4p (six batteries connected in series and four batteries connected in parallel, in one interval) lithium ion battery and obtained a high discharge rate and temperature change in an external short circuit period. They thus proposed a cold plate design strategy with special channels for adjusting the coolant state. [PERSON] et al. [5] designed fins in the straight channels of a liquid cold plate to simulate the thermal equilibrium performance of a liquid cooling system. They studied five splitter structure parameters, including the number of fins, the length, the angle and the distance between two fins, as well as the offset distance. The simulation results showed that the mean temperature difference decreases as the number of fins increases and that the fin deflection angle and length have a considerable influence on the thermal equilibrium. [PERSON] et al. [6,7] designed and built a 3D model aluminum alloy cold plate with a U-tube serpentine channel structure and different channel layouts, and discussed the influence of the number of cold plates, the number and layout of the cooling channels, as well as the coolant inlet temperature, the mass flow rate, and the direction on the cooling performance.