Circular waveguide dual-mode filters are suitable for realizing high performance and low fabrication cost in Ka-band and above because of the simple structure without screws, metallic posts, and waveguide irises. This paper presents a grooved circular waveguide dual-mode filter designed in Ka-band. The Ka-band dual-mode filter have been designed by accurate and fast full-wave analysis performed using mode-matching techniques. Calculated frequency responses of the designed Ka-band dual-mode filter have been excellent elliptic function responses. And further, the results of error analysis have verified the high efficiency of the presented grooved circular waveguide dual-mode filter.
展开▼
