1. Waveguide Filter Structures
ALLEN AVIONICS INC.
Waveguide Filter Structures
TYPICAL WAVEGUIDE STRUCTURES USED BY
ALLEN AVIONICS

2. Kinds of Waveguide Filters
Metal Insert Filters
Iris Coupled Filters
Post Filters
Single Post Filters
Multiple Post Filters (2 or 3 posts)
Combline Filters
Interdigital Filters
Corrugated Waveguide Filters
Waveguide Stub Filters
Waffle-Iron and Ridge Waveguide Filters

3. Metal Insert Filters

4. Metal Insert Filters

5. Metal Insert Filters

6. Iris Coupled Filters

7. Iris Coupled Filters

8. Iris Coupled Filters

9. Iris Coupled Filters

10. Iris Coupled Filters

11. Post Filters

12. Post Filters

13. Post Filters

14. Combline Filters

15. Combline Filters

16. Combline Filters

17. Other kinds of Combline Filters

18. Other kinds of Combline Filters

19. Interdigital Filters

20. Corrugated Waveguide Filters

21. Corrugated Waveguide Filters

22. Corrugated Stepped Impedance Filters

23. Corrugated Stepped Impedance Filters

24. Waveguide Stub Filters

25. Waveguide Stub Filters

26. Waffle-Iron Waveguide Filter

27. Waffle-Iron Waveguide Filter

28. Other Waveguide Structures
Coax –feed Structures

29. Other Waveguide Structures
Diplexers