6G • RAN
Continuous-Aperture MIMO (CAP-MIMO)
Spatially Continuous Electromagnetic Array for Terabit Communications
Mathematical and physical antenna structure eliminating inter-element spacing constraints to treat the entire panel as a continuous radiating aperture.
Technical Explanation
Traditional antenna arrays require elements to be separated by at least half a wavelength (λ/2) to prevent severe mutual coupling. Continuous-Aperture MIMO (CAP-MIMO) integrates dense metamaterials to treat an entire surface area as an unbroken spatial electromagnetic continuum. Governed by Fourier optics and Green's function field theory, CAP-MIMO achieves theoretical maximum spatial multiplexing gain per square meter of antenna panel.
Key Functions
- Treats the antenna surface as a continuous, unbroken radiating continuum
- Overcomes classical λ/2 inter-element spacing constraints in high-frequency arrays
- Maximizes spatial degrees of freedom (DoF) within a fixed physical boundary
- Employs Fourier optics spatial frequency transform for ultra-dense beamforming
Specifications
IEEE Trans. Wireless Communications, European SNS JU 6G Architectures
Interfaces
Continuous Aperture Feed MatrixSpatial Fourier Baseband
Related 6G Concepts
Want to memorize 6G concepts like this one?
Study it with SuperMemo SM-2 spaced repetition flashcards.