Pinching Antenna Systems

The Core Mechanism

A dielectric waveguide guides RF energy with very low loss through a dielectric medium—think a rod of engineered plastic with appropriate permittivity. When the waveguide is pinched at a point (physically deformed or electronically perturbed), guided modes couple to radiating modes at that point, emitting a signal into the environment. Moving the pinch point moves the effective antenna. Multiple simultaneous pinch points create a distributed, software-controlled aperture across an entire room or corridor.

Why Waveguides Win

Traditional reconfigurable antennas—switched arrays, phase shifters, mechanical gimbals—add loss, cost, and failure modes at every element. Dielectric waveguides carry RF energy with minimal conductor loss over long distances, enabling a single waveguide segment to serve an entire space. The architecture scales naturally: adding coverage means adding waveguide runs, not deploying new radio units.

Target Environments

Our primary target scenarios are indoor environments with dynamic occupancy: open-plan offices, factories, hospitals, and stadiums. In these spaces, users move unpredictably and NLOS (non-line-of-sight) conditions dominate at mmWave frequencies. PASS enables on-demand LoS links that follow users, recovering the link margin that conventional fixed arrays lose to blockage.

Open Research Questions

How many simultaneous pinch points can be managed before mutual coupling degrades performance? What is the optimal waveguide material and cross-section for Sub-6GHz versus mmWave operation? How does a neural beam management policy learn to place pinch points in real time given only partial channel state? These are the questions driving our current experimental and simulation work.