Authors:
K. Lalitha, R. Vani, Bhopendra Singh
Addresses:
Department of Electronics and Communication Engineering, SRM Institute of Science and Technology, Ramapuram, Chennai, Tamil Nadu, India. Department of Engineering, Amity University Dubai, Dubai, United Arab Emirates.
Combining amplifier outputs into one transmission line is typical for microwave applications. The study offers a 4:1 WR28 waveguide power combiner for Ka-band frequency simulated in CST Studio Suite. Current Ka-band 4-way power combiners use microstrip-to-waveguide transitions based on microstrip patches. This design uses a multilayer PCB. The model was also simulated using 3D full-wave electromagnetic field software. A 4:1 spatial combiner using WR28 waveguide for Ka-band microwave combining is presented. The 32–38 GHz power combiner interfaces with Ka-band equipment. Through thorough electromagnetic simulation and optimisation, the design achieves a 0.5 dB insertion loss, a 15–35 dB isolation range, and a 13–50 dB return loss. Combiner simulations used high-frequency issue types with silver as the material. The VSWR is below -10 dB, showing low reflection and making it perfect for wave combining. Experimental validation shows that the power combiner is suitable for Ka-band systems. This combiner meets or exceeds performance standards, making it a viable option for Ka-band microwave applications. The design's effective execution demonstrates its potential to enhance Ka-band system performance, thereby advancing telecommunications and related fields. The power combiner meets Ka-band application requirements thanks to electromagnetic simulation and optimisation. The combiner is cost-effective for Ka-band systems because it ensures great performance and resource efficiency.
Keywords: Ka-Band Frequency; Printed Circuit Board; 3D Full-Wave Electromagnetic Field; Voltage Standing Wave Ratio; Computer Simulation Technology; Cost-Effective Solution; Rigorous Electromagnetic Simulation.
Received on: 22/09/2024, Revised on: 14/11/2024, Accepted on: 25/12/2024, Published on: 07/06/2025
DOI: 10.64091/ATIEL.2025.000123
AVE Trends in Intelligent Energy Letters, 2025 Vol. 1 No. 1, Pages: 21-38