High Selectivity Bandpass Based on Multi-mode Resonators
摘要
With the rapid development of wireless communication technologies, microwave filters featuring multiband operation, high selectivity, and compact dimensions have become crucial components for multimode communication systems [1–3]. This chapter focuses on two primary approaches to multimode filter design: microstrip structures and substrate-integrated waveguide (SIW), each offering distinct advantages in terms of integration flexibility/miniaturization and harmonic suppression, respectively.