Waveguide mode converter and method using same
This patent describes a waveguide mode converter which converts electromagnetic power being transmitted in a TE{sub 0{ital n}} or a TM{sub 0{ital n}} mode, where n is an integer, to an HE{sub 11} mode. The conversion process occurs in a single stage without requiring the power to pass through any intermediate modes. The converter comprises a length of circular corrugated waveguide formed in a multiperiod periodic curve. The period of the curve is selected to couple the desired modes and decouple undesired modes. The corrugation depth is selected to control the phase propagation constant, or wavenumbers, of the input and output modes, thereby preventing coherent coupling to competing modes. In one embodiment, both the period and amplitude of the curve may be selectively adjusted, thereby allowing the converter to be tuned to maximize the conversion efficiency.
- Assignee:
- Dept. of Energy, Washington, DC (USA)
- Patent Number(s):
- US 4956620; A
- Application Number:
- PPN: US s 7-381756
- OSTI ID:
- 6420928
- Resource Relation:
- Patent File Date: 17 Jul 1989
- Country of Publication:
- United States
- Language:
- English
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