Near field mmWave sensing is poised to play a key role in future wireless systems, enabling environment-aware, embodied, and application adaptive operation under stringent form-factor and hardware constraints. However, achieving high spatial resolution in the near field typically requires large antenna arrays, multiple radio frequency (RF) chains, or mechanical scanning, creating a fundamental tension between spatial observability and system simplicity. This paper presents frequency as aperture clip on antenna fabric (FaACAF), a hardware efficient sensing by design architecture that synthesizes spatial aperture through the FaA paradigm using a single RF chain. FaACAF realizes a modular clip on aperture fabric, in which frequency selective clip on modules (CMs) are attached to a shared guided-wave substrate and implicitly coordinated by the instantaneous frequency modulated continuous wave (FMCW) excitation frequency. In this fabric, FMCW signaling simultaneously indexes the sensing aperture and orchestrates uplink/downlink signal distribution and echo multiplexing in a switch free, fully passive, and all analog manner, eliminating RF switching and multichannel front ends. An online self calibration mechanism stabilizes the frequency to aperture mapping under practical attachment variability without requiring full matrix calibration. Two case studies illustrate the robustness of the proposed approach and quantify the predictable sensing margin tradeoffs introduced by modular deployment. Overall, FaACAF demonstrates that near field spatial observability can be scaled through architectural coordination in the frequency domain rather than hardware expansion, providing a reconfigurable and hardware efficient pathway toward embodied sensing and integrated sensing and communication (ISAC) in future wireless systems.

翻译：近场毫米波感知有望在未来无线系统中发挥关键作用，在严苛的形态尺寸与硬件约束下实现环境感知、具身化及应用自适应运行。然而，在近场实现高空间分辨率通常需要大规模天线阵列、多射频链或机械扫描，这造成了空间可观测性与系统简洁性之间的根本矛盾。本文提出频率即孔径可裁剪天线织物（FaA-CAF），一种通过设计实现硬件高效感知的架构，其利用FaA范式通过单射频链合成空间孔径。FaA-CAF实现了一种模块化可裁剪孔径织物，其中频率选择性的可裁剪模块附着于共享的导波基底上，并通过瞬时调频连续波激励频率实现隐式协调。在该织物中，FMCW信号同时索引感知孔径，并以无开关、全被动、全模拟的方式协调上下行信号分发与回波复用，从而消除了射频切换与多通道前端的需求。一种在线自校准机制在实际附着变异下稳定了频率至孔径的映射关系，无需进行全矩阵校准。两个案例研究阐明了所提方法的鲁棒性，并量化了模块化部署引入的可预测感知裕度权衡。总体而言，FaA-CAF表明近场空间可观测性可通过频域的架构协同而非硬件扩展来实现，为未来无线系统中的具身感知与通感一体化提供了一条可重构且硬件高效的路径。