# Programmable Metasurface-based RF Chain-free 8PSK Wireless Transmitter

## TL;DR

This paper introduces a novel RF transmitter architecture using programmable metasurfaces that eliminates traditional RF components, achieving high data rates with reduced hardware complexity for future wireless systems.

## Contribution

It presents the first implementation of a metasurface-based RF transmitter capable of 8PSK modulation without conventional RF components, demonstrating promising performance and hardware simplification.

## Key findings

- Achieved 6.144 Mbps data rate at 4.25 GHz.
- Maintained comparable BER to conventional systems.
- Reduced hardware complexity by eliminating filters and mixers.

## Abstract

In this letter, a wireless transmitter using the new architecture of programmable metasurface is presented. The proposed transmitter does not require any filter, nor wideband mixer or wideband power amplifier, thereby making it a promising hardware architecture for cost-effective wireless communications systems in the future. Using experimental results, we demonstrate that a programmable metasurface-based 8-phase shift-keying (8PSK) transmitter with 8*32 phase adjustable unit cells can achieve 6.144 Mbps data rate over the air at 4.25 GHz with a comparable bit error rate (BER) performance as the conventional approach without channel coding, but with less hardware complexity.

---
Source: https://tomesphere.com/paper/1903.03060