RF Performance Test of Sub-6 GHz Switching System for Multiple Concurrent Users on a Single Network Analyzer

This study aims to develop a switching system that enables the simultaneous measurement of various devices using a vector network analyzer (VNA). Although the VNA plays an important role in the production of RF equipment, the existing system is limited to a single user, leading to be low efficiency and high cost. To overcome this limitation, we present a multi-user switching system, allowing eight users to concurrently share a single VNA. The developed switching system has been validated by measuring insertion loss, return loss, and isolation.

I. Introduction

As 5G technology continues to develop rapidly, there is an increasing demand for various components to support its high-frequency and high-speed transmission capabilities. Among these components, RF filters play a crucial role in enabling efficient and reliable communication [1], [2]. Accurate and reliable measurements of the components and devices of these devices are essential to ensure optimal system performance. However, conventional vector network analyzer (VNA) systems have been limited to single-user operation, resulting in inefficiencies and increased costs [3]. The high price of VNA equipment, along with its single-user limitation, has slowed the production rate of RF equipment and increased the unit cost of the products.