Advanced Microwave Filter Design for Next-Generation High-Frequency Wireless Communication
Keywords:
5G communication, 6G communication, Bandpass filter, Metamaterials, Microwave filters, Millimeter-wave filters, RF front-end, SIW filters, SSPP structures, Wireless communicationAbstract
The rapid evolution of fifth-generation (5G) and sixth-generation (6G) wireless communication systems has intensified the demand for compact, low-loss, highly selective, and wideband microwave filters operating in millimeter-wave (mmWave) and terahertz frequency bands. Advanced microwave filter technologies play a critical role in ensuring spectrum efficiency, interference suppression, and signal integrity in next-generation wireless networks. This research article investigates advanced microwave filter design methodologies based on substrate integrated waveguide (SIW), spoof surface plasmon polariton (SSPP), and metamaterial resonators, and multi-band filtering structures for high-frequency wireless communication systems. The proposed study develops a hybrid SIW-SSPP bandpass filter operating within the 24–30 GHz spectrum suitable for 5G NR and future 6G applications. Simulation-based analysis evaluates insertion loss, return loss, bandwidth, selectivity, and group delay characteristics. Results demonstrate that the hybrid design achieves superior out-of-band rejection, compact size, and low insertion loss compared with conventional microstrip filters. The findings confirm that advanced microwave filter architectures can significantly enhance the performance and scalability of future wireless front-end systems.
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