Single-Band and Dual-Band Dielectric Waveguide Bandpass Filters

With the continuous development of wireless communication technology, many higher requirements have been put forward for the performance of filters. Dielectric waveguide filters have been widely used in radio frequency front-end systems due to their high quality factor, small size, and large power capacity. Meanwhile, because of the coexistence of multiple wireless communication systems, the filters studied and designed need to operate in multiple frequency bands. This article summarizes the research work of the author's research group on single-band and multi-band dielectric waveguide filters in recent years.