A Compact Microstrip Planar Crossover for LTE Applications

Abstract

Microwave integrated circuits (MICs) are becoming increasingly important in communication systems due to their ability to efficiently transfer power and signals using crossover structures. Conventional crossover designs, however, suffer from significant signal and power losses, limiting their performance. In various studies, there are complex planar designs, MICs and Radio Frequency (RF) circuits operating from frequencies and bands. This paper proposes a novel fully symmetric four-port microstrip planar crossover that overcomes these limitations. A square microstrip structure with a size of 80.0 × 80.0 ×1.6 mm³ is presented in the design, which has a planar crossover and wide band gap at an operating frequency of 2.1 GHz. The proposed design provides excellent isolation between ports and minimizes signal and power losses, making it a promising solution for MICs and RF circuits for LTE applications.