Affiliation:
1. Department of Electrical and Computer Engineering Faculty of Science and Technology University of Macau Macao China
2. School of Electrical and Automation Engineering Nanjing Normal University Nanjing China
Abstract
AbstractThis letter presents a novel millimetre‐wave (mm‐wave) on‐chip substrate integrated waveguide (SIW) filtering crossover using 0.25 µm GaAs pHEMT technology. The design methodology of the proposed crossover is thoroughly illustrated. The proposed filtering crossover employs a dual‐mode cavity with TE102 and TE201 degenerate mode resonances at the intersection, leveraging the degenerate modes for in‐band resonance and inter‐channel isolation. Additionally, four TE101 mode resonant half‐mode SIW cavities are coupled around the dual‐mode cavity to achieve two third‐order bandpass response channels and reduce the overall size. A prototype is designed, analysed, and fabricated to validate the proposed approach, with measured results showing good agreement with simulations. The presented on‐chip SIW filtering crossover offers promising potential for mm‐wave applications, demonstrating the effectiveness of the design methodology and GaAs pHEMT technology integration.
Funder
Universidade de Macau
Fundo para o Desenvolvimento das Ciências e da Tecnologia
Guangdong Provincial Department of Science and Technology
Publisher
Institution of Engineering and Technology (IET)