Broadband UHF microstrip coupler

Abstract

A novel and broadband non-directional coupler operating at 300-3200 MHz band is presented in this paper. The coupler was designed using extensive electromagnetic simulations and built on FR4 substrate using microstrip technology. The designed coupler is a three-port device; input, output, and coupled ports. It provides an almost flat coupled power at the coupled port throughout the UHF band. Measurements are provided in comparison with simulated S-parameters. Measured and simulated values are in very good agreement. (C) 2019 Elsevier GmbH. All rights reserved.