Mimicking the mature sensing modalities in fiber-optic sensors, coaxial cable sensors are developed to be promising alternatives for fiber-optic sensors in harsh-environment applications involving heavy duty, large strains, high pressures, and high temperatures. Distributed strain sensing is a powerful tool for in situ structural health monitoring for a wide range of critical engineering infrastructures. Huang, "Coaxial Cable Sensing: Review And Perspective," IEEE Transactions on Microwave Theory and Techniques, Institute of Electrical and Electronics Engineers, Jan 2023. The definitive version is available at https://doi. 3305049 This Article - Journal is brought. Future Research Challenges in Coaxial Cable Strain Sensing 5.