《IEEE微波理論與技術匯刊》關注的是與微波/毫米波元件、器件、電路和涉及微波信號的產生、調制、解調、控制、傳輸和檢測系統相關的工程和理論部分。這包括科學、技術和工業活動。微波理論和技術通常與電磁波有關，通常在幾個兆赫和太赫茲之間的頻率范圍內；只要基本的微波理論和技術能產生有用的結果，其他的光譜區域和波型就包括在社會范圍內。一般來說，這發生在結構中的波傳播理論中，結構的尺寸與波長相當，以及相關的分析和設計技術中。

The IEEE Transactions on Microwave Theory and Techniques focuses on that part of engineering and theory associated with microwave/millimeter-wave components, devices, circuits, and systems involving the generation, modulation, demodulation, control, transmission, and detection of microwave signals. This includes scientific, technical, and industrial, activities. Microwave theory and techniques relates to electromagnetic waves usually in the frequency region between a few MHz and a THz; other spectral regions and wave types are included within the scope of the Society whenever basic microwave theory and techniques can yield useful results. Generally, this occurs in the theory of wave propagation in structures with dimensions comparable to a wavelength, and in the related techniques for analysis and design.